subject:(Wind Speed)

University of Nairobi

1. Masamba, Musiba, M. Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania .

Degree: 2013, University of Nairobi

URL: http://hdl.handle.net/11295/95516

► Tanzania depends heavily on hydropower for her electricity demand and experiences power shortage during the dry seasons. This research project investigates the wind power potential… (more)

Subjects/Keywords: Wind speed frequency; wind power density; wind power generation; Power potential; Wind energy; Wind speed

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APA (6^th Edition):

Masamba, Musiba, M. (2013). Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania . (Thesis). University of Nairobi. Retrieved from http://hdl.handle.net/11295/95516

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Masamba, Musiba, M. “Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania .” 2013. Thesis, University of Nairobi. Accessed December 11, 2019. http://hdl.handle.net/11295/95516.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Masamba, Musiba, M. “Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania .” 2013. Web. 11 Dec 2019.

Vancouver:

Masamba, Musiba M. Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania . [Internet] [Thesis]. University of Nairobi; 2013. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/11295/95516.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Masamba, Musiba M. Assessing the potential of wind energy for electrical power generation in Dodoma Region, Tanzania . [Thesis]. University of Nairobi; 2013. Available from: http://hdl.handle.net/11295/95516

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Nelson Mandela Metropolitan University

2. Ndzukuma, Sibusiso. Statistical tools for wind energy generation.

Degree: Faculty of Science, 2012, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/d1020627

► In this study we conduct wind resource assessment to evaluate the annual energy production of a wind turbine. To estimate energy production of a wind… (more)

Subjects/Keywords: Wind power; Wind turbines; Winds – Speed

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APA (6^th Edition):

Ndzukuma, S. (2012). Statistical tools for wind energy generation. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1020627

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ndzukuma, Sibusiso. “Statistical tools for wind energy generation.” 2012. Thesis, Nelson Mandela Metropolitan University. Accessed December 11, 2019. http://hdl.handle.net/10948/d1020627.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ndzukuma, Sibusiso. “Statistical tools for wind energy generation.” 2012. Web. 11 Dec 2019.

Vancouver:

Ndzukuma S. Statistical tools for wind energy generation. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2012. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/10948/d1020627.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ndzukuma S. Statistical tools for wind energy generation. [Thesis]. Nelson Mandela Metropolitan University; 2012. Available from: http://hdl.handle.net/10948/d1020627

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

North-West University

3. Human, Jacobus Daniel. Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human .

Degree: 2014, North-West University

URL: http://hdl.handle.net/10394/15291

► The use of renewable energy is promoted worldwide to be less dependent on fossil fuels and nuclear energy. Therefore research in the field is driven… (more)

▼ The use of renewable energy is promoted worldwide to be less dependent on fossil fuels and nuclear energy. Therefore research in the field is driven to increase efficiency of renewable energy systems. This study aimed to develop a wind turbine for low wind speeds in South Africa. Although there is a greater tendency to use solar panels because of the local weather conditions, there are some practical implications that have put the use of solar panels in certain areas to an end. The biggest problem is panel theft. Also, in some parts of the country the weather is more suitable to apply wind turbines. Thus, this study focused on the design of a new concept to improve wind turbines to be appropriate for the low wind speeds in South Africa. The concept involves the implementation of a concentrator and diffuser to a wind turbine, to increase the power coefficient. Although the wind turbine was not tested for starting speeds, the implementation of the shroud should contribute to improved starting of the wind turbine at lower wind speeds. The configuration were not manufactured, but simulated with the use of a program to obtain the power production of the wind turbine over a range of wind speeds. These values were compared to measured results of a open wind turbine developed for South Africa. The most important matter at hand when dealing with a shrouded wind turbine is to determine if the overall diameter or the blade diameter of the turbine should be the point of reference. As the wind turbine is situated in a shroud that has a larger diameter than the turbine blades, some researchers believe that the overall diameter should be used to calculate the efficiency. Theory was revised to determine the available energy in the shroud after initial calculations showed that the power coefficients should have been higher than the open wind turbine with the same total diameter. A new equation was derived to predict the available energy in a shroud. The benefits of shrouded wind turbines are fully discussed in the dissertation content.

Subjects/Keywords: Wind Turbine; Power Coefficient(Cp); Wind speed; Air speed in shroud

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APA (6^th Edition):

Human, J. D. (2014). Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human . (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/15291

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Human, Jacobus Daniel. “Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human .” 2014. Thesis, North-West University. Accessed December 11, 2019. http://hdl.handle.net/10394/15291.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Human, Jacobus Daniel. “Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human .” 2014. Web. 11 Dec 2019.

Vancouver:

Human JD. Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human . [Internet] [Thesis]. North-West University; 2014. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/10394/15291.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Human JD. Design of a shrouded wind turbine for low wind speeds / Jacobus Daniel Human . [Thesis]. North-West University; 2014. Available from: http://hdl.handle.net/10394/15291

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Luleå University of Technology

4. Islam, Sheikh Zahidul. An alternative approach to measure low level winds at Esrange.

Degree: 2008, Luleå University of Technology

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-57479

►

When a rocket is launched from Esrange, all the way from ground up to 1000m is of great importance regarding the wind conditions and… (more)

▼

When a rocket is launched from Esrange, all the way from ground up to 1000m is of great importance regarding the wind conditions and high resolution measurement. In order to determine the safety of landing and takeoff conditions, wind data is essential.Meteorological service is one the pre- flight services provided by Esrange before flight. Several meteorological systems are running at Esrange Space Center every day and night. Data collected from these tests are automatically transferred to a scientific data base. The measurement process becomes more intensive before each launch. These data (pressure, temperature and humidity) provides important information for the safety operation officer. During a countdown, meteorological balloons are launched regularly. ETAG (Esrange Throw Away GPS) is a new system developed by Esrange for wind measurement before any rocket launch. This means that Esrange is loosing a lot of quite expensive equipment for every wind sounding experiment as well as a balloon and Helium gas. So there is a need to define an alternative approach for low level wind measurement that would provide a relatively low- cost reusable system. Also the system will give the opportunity to measure the low level wind accurately at remote launch location. This thesis discusses the feasibility of a new idea of research to find alternative method to measure low level wind. The new idea is to use a large motorized fishing reel. The fishing reel will release and rewind a 1000 m line. This will allow to reuse the whole set and also have the possibility of high resolution. Also the balloon should move freely upward. That means the balloon should experience minimum tension while going up. A prototype of the proposed system was tested with 150m line and the result was compared with wind tower data. Wind speed and wind direction was determined up to 600m for seventeen meteorological balloons launched from Esrange. The advantages and disadvantages of the ETAG, motorized fishing reel system, and measurement procedures were identified and possible solutions were recommended. There were certain uncertainties and requirements which make the motorized fishing reel system design more complicated. Therefore the system was not built. Finally the thesis describes the possibility of a new system for low level wind measurement which can be used in future for further development of the pre-flight services at Esrange.

Validerat; 20101217 (root)

Subjects/Keywords: Technology; Wind Speed; Wind Direction; GPS; Wind Tower; Teknik

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APA (6^th Edition):

Islam, S. Z. (2008). An alternative approach to measure low level winds at Esrange. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-57479

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Islam, Sheikh Zahidul. “An alternative approach to measure low level winds at Esrange.” 2008. Thesis, Luleå University of Technology. Accessed December 11, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-57479.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Islam, Sheikh Zahidul. “An alternative approach to measure low level winds at Esrange.” 2008. Web. 11 Dec 2019.

Vancouver:

Islam SZ. An alternative approach to measure low level winds at Esrange. [Internet] [Thesis]. Luleå University of Technology; 2008. [cited 2019 Dec 11]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-57479.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Islam SZ. An alternative approach to measure low level winds at Esrange. [Thesis]. Luleå University of Technology; 2008. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-57479

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

5. Bharathi dasan S G. Some investigations on dynamic analysis of grid connected wind energy conversion systems;.

Degree: Some investigations on dynamic analysis of grid connected wind energy conversion systems, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/33690

►

Some investigations on dynamic analysis of grid connected wind energy conversion systems newlineGrowing environmental concerns and attempts to reduce dependency on fossil fuel resources are… (more)

Subjects/Keywords: Fixed speed wind energy conversion system; Partially variable speed wind energy conversion system; Variable speed wind energy conversion system

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APA (6^th Edition):

G, B. d. S. (2015). Some investigations on dynamic analysis of grid connected wind energy conversion systems;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/33690

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

G, Bharathi dasan S. “Some investigations on dynamic analysis of grid connected wind energy conversion systems;.” 2015. Thesis, Anna University. Accessed December 11, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/33690.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

G, Bharathi dasan S. “Some investigations on dynamic analysis of grid connected wind energy conversion systems;.” 2015. Web. 11 Dec 2019.

Vancouver:

G BdS. Some investigations on dynamic analysis of grid connected wind energy conversion systems;. [Internet] [Thesis]. Anna University; 2015. [cited 2019 Dec 11]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/33690.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

G BdS. Some investigations on dynamic analysis of grid connected wind energy conversion systems;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/33690

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

6. Ramakrishnan, Vijay. Development of an omni-directional weather-monitoring anemometer.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/150920

► This work presents the design, fabrication, calibration and testing of a pressure-based three-component anemometer capable of measuring accurate wind speeds in extreme weather conditions. The… (more)

▼ This work presents the design, fabrication, calibration and testing of a pressure-based three-component anemometer capable of measuring accurate wind speeds in extreme weather conditions. The groundwork, at the outset, covers the development of a 12-hole omni-directional flow-velocity measurement probe capable of measuring flows up to 155? from the probe axis. The new 12-hole design is optimal in the sense that the calculation of the four unknown flow quantities, i.e., two flow angles, flow speed and static pressure, is achieved with the minimum necessary number of holes/ports on the probe tip. The fact that this design has 33% lesser number of holes compared to an earlier design, has significant implications in the instrument?s spatial resolution, frequency response as well as cost of interfacing and usage. A prototype 12-hole probe with a spherical tip diameter of 3/8 inches was fabricated and tested. Good flow prediction accuracy was obtained. Further groundwork on multi-hole probe technology was carried out, developing new methods for correcting and refining the calibration and reduction procedures. When calibrating multi-hole velocity probes in a wind-tunnel, offset (or bias) errors often exist in the recorded flow angles due to errors in aligning the traverse system exactly with the flow direction and due to the angularity of the tunnel flow itself. These offset angles are hard to quantify from direct measurements with any degree of accuracy. Although usually small (less than 0.5? in most good calibrations), these errors still need to be corrected to increase the flow measurement accuracy of the probe. In this work, a method is developed that computes offset errors in all types of multi-hole probes ? from the traditional 5- and 7-hole probes to the omni-directional 18-hole probe and the nextgeneration 12-hole probe ? using simply the pressure data obtained during their calibration. The algorithm doubled the measurement accuracy for most probes. Other issues related to post-processing of the pressure data from flow studies, when the multihole probe encountered unsteady and reversed flow conditions, were also examined. The design of the anemometer (herein called a Weatherprobe) builds on that of the 12- hole probe and is capable of measuring wind velocities up to ?45? to the horizontal plane and 360? around the horizontal plane. Due to the non-conventional arrangement of its pressure ports, newly developed calibration and data-reduction algorithms were used. The probe was calibrated and its measurement accuracy assessed in a calibration facility. All associated instrumentation was assembled from the ground up and ruggedized for harsh-weather applications. Field tests performed over many days next to a 3-D sonic anemometer showed good agreement in measured flow properties, thus validating the entire Weatherprobe system. This probe has widespread applications in weather monitoring, wind energy potential estimations and structural wind load evaluations. Advisors/Committee Members: Rediniotis, Othon K (advisor), Bowersox, Rodney D. W. (committee member), Cizmas, Paul G. A. (committee member), San Andres, Luis (committee member).

Subjects/Keywords: anemometer; pressure probe; wind speed; 12-hole

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APA (6^th Edition):

Ramakrishnan, V. (2009). Development of an omni-directional weather-monitoring anemometer. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/150920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ramakrishnan, Vijay. “Development of an omni-directional weather-monitoring anemometer.” 2009. Thesis, Texas A&M University. Accessed December 11, 2019. http://hdl.handle.net/1969.1/150920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ramakrishnan, Vijay. “Development of an omni-directional weather-monitoring anemometer.” 2009. Web. 11 Dec 2019.

Vancouver:

Ramakrishnan V. Development of an omni-directional weather-monitoring anemometer. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/1969.1/150920.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ramakrishnan V. Development of an omni-directional weather-monitoring anemometer. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/150920

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

7. Santhi R. Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;.

Degree: Design and implementation of power electronic Interfaces and controllers for renewable Energy applications, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/39438

►

The ever increasing demand for conventional energy sources has newlinedriven society towards the need for research and development of alternative newlineenergy sources Many such energy… (more)

Subjects/Keywords: Fixed Speed WECS; Wind Energy Conversion System

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APA (6^th Edition):

R, S. (2015). Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/39438

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

R, Santhi. “Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;.” 2015. Thesis, Anna University. Accessed December 11, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/39438.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

R, Santhi. “Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;.” 2015. Web. 11 Dec 2019.

Vancouver:

R S. Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;. [Internet] [Thesis]. Anna University; 2015. [cited 2019 Dec 11]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39438.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

R S. Design and implementation of power electronic Interfaces and controllers for renewable Energy applications;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39438

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loughborough University

8. Kritharas, Petros. Developing a SARIMAX model for monthly wind speed forecasting in the UK.

Degree: PhD, 2014, Loughborough University

URL: https://dspace.lboro.ac.uk/2134/16350 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631660

► Wind is a fluctuating source of energy and, therefore, it can cause several technical impacts. These can be tackled by forecasting wind speed and thus… (more)

▼ Wind is a fluctuating source of energy and, therefore, it can cause several technical impacts. These can be tackled by forecasting wind speed and thus wind power. The introduction of several statistical models in this field of research has brought to light promising results for improving wind speed predictions. However, there is not converging evidence on which is the optimal method. Over the last three decades, significant research has been carried out in the field of short-term forecasting using statistical models though less work focuses on longer timescales. The first part of this work concentrated on long-term wind speed variability over the UK. Two subsets have been used for assessing the variability of wind speed in the UK on both temporal and spatial coverage over a period representative of the expected lifespan of a wind farm. Two wind indices are presented with a calculated standard deviation of 4% . This value reveals that such changes in the average UK wind power capacity factor is equal to 7%. A parallel line of the research reported herein aimed to develop a novel statistical forecasting model for generating monthly mean wind speed predictions. It utilised long-term historic wind speed records from surface stations as well as reanalysis data. The methodology employed a SARIMAX model that incorporated monthly autocorrelation of wind speed and seasonality, and also included exogenous inputs. Four different cases were examined, each of which incorporated different independent variables. The results disclosed a strong association between the independent variables and wind speed showing correlations up to 0.72. Depending on each case, this relationship occurred from 4- up to 12-month lags. The inter comparison revealed an improvement in the forecasting accuracy of the proposed model compared to a similar model that did not take into account exogenous variables. This finding demonstrates the indisputable potential of using a SARIMAX for long-term wind speed forecasting.

Subjects/Keywords: 621.4; Long-term; Variability; Forecasting; Wind speed

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APA (6^th Edition):

Kritharas, P. (2014). Developing a SARIMAX model for monthly wind speed forecasting in the UK. (Doctoral Dissertation). Loughborough University. Retrieved from https://dspace.lboro.ac.uk/2134/16350 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631660

Chicago Manual of Style (16^th Edition):

Kritharas, Petros. “Developing a SARIMAX model for monthly wind speed forecasting in the UK.” 2014. Doctoral Dissertation, Loughborough University. Accessed December 11, 2019. https://dspace.lboro.ac.uk/2134/16350 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631660.

MLA Handbook (7^th Edition):

Kritharas, Petros. “Developing a SARIMAX model for monthly wind speed forecasting in the UK.” 2014. Web. 11 Dec 2019.

Vancouver:

Kritharas P. Developing a SARIMAX model for monthly wind speed forecasting in the UK. [Internet] [Doctoral dissertation]. Loughborough University; 2014. [cited 2019 Dec 11]. Available from: https://dspace.lboro.ac.uk/2134/16350 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631660.

Council of Science Editors:

Kritharas P. Developing a SARIMAX model for monthly wind speed forecasting in the UK. [Doctoral Dissertation]. Loughborough University; 2014. Available from: https://dspace.lboro.ac.uk/2134/16350 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631660

Penn State University

9. Alexander, Daniel. Wind Speed Prediction Via Time Series Modeling.

Degree: MS, Meteorology, 2009, Penn State University

URL: https://etda.libraries.psu.edu/catalog/10024

► Projected construction of nearby wind farms motivates this study of statistical forecasting of wind speed, for which accurate prediction is critically important to the fluid… (more)

Subjects/Keywords: AR/ARMA; Wind Speed Prediction; Neural Networks

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APA (6^th Edition):

Alexander, D. (2009). Wind Speed Prediction Via Time Series Modeling. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/10024

Chicago Manual of Style (16^th Edition):

Alexander, Daniel. “Wind Speed Prediction Via Time Series Modeling.” 2009. Masters Thesis, Penn State University. Accessed December 11, 2019. https://etda.libraries.psu.edu/catalog/10024.

MLA Handbook (7^th Edition):

Alexander, Daniel. “Wind Speed Prediction Via Time Series Modeling.” 2009. Web. 11 Dec 2019.

Vancouver:

Alexander D. Wind Speed Prediction Via Time Series Modeling. [Internet] [Masters thesis]. Penn State University; 2009. [cited 2019 Dec 11]. Available from: https://etda.libraries.psu.edu/catalog/10024.

Council of Science Editors:

Alexander D. Wind Speed Prediction Via Time Series Modeling. [Masters Thesis]. Penn State University; 2009. Available from: https://etda.libraries.psu.edu/catalog/10024

Delft University of Technology

10. Kalpoe, D.S. Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:2d8318f7-42bf-4637-8d34-285f98405b64

► To meet the growing demand for sustainable energy, existing wind turbines have to be made more powerful and efficient. One of the research topics to… (more)

▼ To meet the growing demand for sustainable energy, existing wind turbines have to be made more powerful and efficient. One of the research topics to achieve this, is the aero-elastic stability limit of the blades. This can be analyzed by the vibrations that occur on the blades during normal operational conditions. In this study high speed photogrammetry is used to measure blade vibrations of a model wind turbine. By placing targets on the blades of the wind turbine and taking images with two synchronized high speed cameras, the motion of the blades is captured. High speed cameras produce a large number of images, making manual target measurements impractical. In this study, it is investigated how target measurements in high speed images can be automated and what accuracy can be obtained for the reconstructed object coordinates. To automate the target measurements, a method is developed based on target detection and tracking. The targets in the images are detected using a threshold histogram segmentation. Since the targets describe a circular motion a circle is used as model to track its position in the sequence of frames. To measure the targets with subpixel precision, the edges of the targets are detected and a circle is fitted to the edges. To reconstruct the object coordinates a Direct Linear Transformation (DLT) is used. The DLT equations are linear and can easily be solved with standard Least Squares Estimation. The developed methods were used for an experiment in a wind tunnel, whereby images of a model wind turbine were made with an acquisition frequency of 500 Hz and a rotational speed of 260 rpm. Retro-reflective targets were put on the blades to identify the measuring points. Using the developed methods, the targets were successfully measured and tracked in the images of the experiment. Using the targets measured in the images, 3D object coordinates were calculated with an accuracy of 1.32 millimeter. The vibrations of a target were obtained by means of Principal Component Analyses (PCA). Using PCA, the track of coordinates of a target was transformed to a new coordinate system. The xy plane of this new coordinate system coincided with the rotation plane of the target and the z axis is perpendicular to it, containing the vibrations. The measured vibration had a maximum amplitude of 6 mm, with an accuracy of 0.56 mm in the vibration component. From the performed experiment with the model wind turbine, it can be concluded that the blade vibrations can be measured using high speed photogrammetry. Advisors/Committee Members: Menenti, M., Khosh Elham, K., Gorte, B.G.H..

Subjects/Keywords: High Speed Photogrammetry; Wind Turbine Photogrammetry

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APA (6^th Edition):

Kalpoe, D. S. (2010). Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:2d8318f7-42bf-4637-8d34-285f98405b64

Chicago Manual of Style (16^th Edition):

Kalpoe, D S. “Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:.” 2010. Masters Thesis, Delft University of Technology. Accessed December 11, 2019. http://resolver.tudelft.nl/uuid:2d8318f7-42bf-4637-8d34-285f98405b64.

MLA Handbook (7^th Edition):

Kalpoe, D S. “Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:.” 2010. Web. 11 Dec 2019.

Vancouver:

Kalpoe DS. Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2019 Dec 11]. Available from: http://resolver.tudelft.nl/uuid:2d8318f7-42bf-4637-8d34-285f98405b64.

Council of Science Editors:

Kalpoe DS. Vibration Measurement of a Model Wind Turbine using High Speed Photogrammetry:. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:2d8318f7-42bf-4637-8d34-285f98405b64

Kansas State University

11. Datta, Pallab Kumar. An artificial neural network approach for short-term wind speed forecast.

Degree: MS, Department of Electrical and Computer Engineering, 2018, Kansas State University

URL: http://hdl.handle.net/2097/38945

► Electricity generation capacity from different renewable sources has been significantly growing worldwide in recent years, specially wind power. Fast dispatch of wind power provides flexibility… (more)

Subjects/Keywords: Artificial neural network; Wind speed forecast

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APA (6^th Edition):

Datta, P. K. (2018). An artificial neural network approach for short-term wind speed forecast. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/38945

Chicago Manual of Style (16^th Edition):

Datta, Pallab Kumar. “An artificial neural network approach for short-term wind speed forecast.” 2018. Masters Thesis, Kansas State University. Accessed December 11, 2019. http://hdl.handle.net/2097/38945.

MLA Handbook (7^th Edition):

Datta, Pallab Kumar. “An artificial neural network approach for short-term wind speed forecast.” 2018. Web. 11 Dec 2019.

Vancouver:

Datta PK. An artificial neural network approach for short-term wind speed forecast. [Internet] [Masters thesis]. Kansas State University; 2018. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/2097/38945.

Council of Science Editors:

Datta PK. An artificial neural network approach for short-term wind speed forecast. [Masters Thesis]. Kansas State University; 2018. Available from: http://hdl.handle.net/2097/38945

Loughborough University

12. Kritharas, Petros. Developing a SARIMAX model for monthly wind speed forecasting in the UK.

Degree: PhD, 2014, Loughborough University

URL: http://hdl.handle.net/2134/16350

► Wind is a fluctuating source of energy and, therefore, it can cause several technical impacts. These can be tackled by forecasting wind speed and thus… (more)

▼ Wind is a fluctuating source of energy and, therefore, it can cause several technical impacts. These can be tackled by forecasting wind speed and thus wind power. The introduction of several statistical models in this field of research has brought to light promising results for improving wind speed predictions. However, there is not converging evidence on which is the optimal method. Over the last three decades, significant research has been carried out in the field of short-term forecasting using statistical models though less work focuses on longer timescales. The first part of this work concentrated on long-term wind speed variability over the UK. Two subsets have been used for assessing the variability of wind speed in the UK on both temporal and spatial coverage over a period representative of the expected lifespan of a wind farm. Two wind indices are presented with a calculated standard deviation of 4% . This value reveals that such changes in the average UK wind power capacity factor is equal to 7%. A parallel line of the research reported herein aimed to develop a novel statistical forecasting model for generating monthly mean wind speed predictions. It utilised long-term historic wind speed records from surface stations as well as reanalysis data. The methodology employed a SARIMAX model that incorporated monthly autocorrelation of wind speed and seasonality, and also included exogenous inputs. Four different cases were examined, each of which incorporated different independent variables. The results disclosed a strong association between the independent variables and wind speed showing correlations up to 0.72. Depending on each case, this relationship occurred from 4- up to 12-month lags. The inter comparison revealed an improvement in the forecasting accuracy of the proposed model compared to a similar model that did not take into account exogenous variables. This finding demonstrates the indisputable potential of using a SARIMAX for long-term wind speed forecasting.

Subjects/Keywords: 621.4; Long-term; Variability; Forecasting; Wind speed

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APA (6^th Edition):

Kritharas, P. (2014). Developing a SARIMAX model for monthly wind speed forecasting in the UK. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/16350

Chicago Manual of Style (16^th Edition):

Kritharas, Petros. “Developing a SARIMAX model for monthly wind speed forecasting in the UK.” 2014. Doctoral Dissertation, Loughborough University. Accessed December 11, 2019. http://hdl.handle.net/2134/16350.

MLA Handbook (7^th Edition):

Kritharas, Petros. “Developing a SARIMAX model for monthly wind speed forecasting in the UK.” 2014. Web. 11 Dec 2019.

Vancouver:

Kritharas P. Developing a SARIMAX model for monthly wind speed forecasting in the UK. [Internet] [Doctoral dissertation]. Loughborough University; 2014. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/2134/16350.

Council of Science Editors:

Kritharas P. Developing a SARIMAX model for monthly wind speed forecasting in the UK. [Doctoral Dissertation]. Loughborough University; 2014. Available from: http://hdl.handle.net/2134/16350

Queens University

13. Wexler, Chloe. Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel .

Degree: Mechanical and Materials Engineering, 2014, Queens University

URL: http://hdl.handle.net/1974/12354

► The undisturbed flow behavior in the Queen’s University Low Speed Wind Tunnel was investigated experimentally and computationally. The velocity profiles, turbulent parameters, boundary layer and… (more)

▼ The undisturbed flow behavior in the Queen’s University Low Speed Wind Tunnel was investigated experimentally and computationally. The velocity profiles, turbulent parameters, boundary layer and corner effects were detailed by traversing the lower left quadrant of the wind tunnel with a seven-hole pressure probe and uniaxial constant temperature hot-wire anemometer. The research goal was to provide a complete reference data set as a comparison standard for future experimental work. The flow in the wind tunnel was verified using computational fluid dynamics in order to present the model requirements and inlet conditions required to accurately simulate the flow. The experimental results indicated that the LSWT was capable of producing a mean axial flow speed of 30 – 31 m/s, dependent on ambient conditions and atmospheric wind speeds, in a 1 m2 test section. Measurements were collected under a variety of external weather conditions and it was determined that the average transient and spatial flow deviation from the mean was on the order of 1.5% and 0.5% respectively. The boundary layer thickness at the exit of the test section was found to be 10 cm above the floor and the corner effects were determined to extend 15 cm into the test section. The turbulent intensity reached 10% at the wall boundaries decaying to a constant uniform value of 3% in the center. Computational simulations were performed for three specific sets of experimental data. The results indicated that the mean axial velocity was predicted with an average deviation of 0.5%. Solution results were extrapolated 1 m downstream from the contraction exit plane, averaged and used to provide reference inlet conditions to a simplified test section model. The turbulence model applied to the solution was varied; the Spalart-Allmaras, k-ε, k-ω, and the blended k-ω SST models were able to resolve the turbulent distribution and flow behavior in a comparable manner. The flow was predicted within the bounds of engineering accuracy, the discrepancy in the simulated and experimental mean velocity ranged from 0.4% to 0.02%.

Subjects/Keywords: Low Speed Wind Tunnel; Computational Fluid Dynamics

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APA (6^th Edition):

Wexler, C. (2014). Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/12354

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wexler, Chloe. “Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel .” 2014. Thesis, Queens University. Accessed December 11, 2019. http://hdl.handle.net/1974/12354.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wexler, Chloe. “Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel .” 2014. Web. 11 Dec 2019.

Vancouver:

Wexler C. Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel . [Internet] [Thesis]. Queens University; 2014. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/1974/12354.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wexler C. Experimental Measurement and Computational Simulation of the Flow in the Queen’s University Low Speed Wind Tunnel . [Thesis]. Queens University; 2014. Available from: http://hdl.handle.net/1974/12354

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

14. lamin, Pa. Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines.

Degree: Master, IMEPE, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702113-182026

► The harmonic impact caused by wind turbines should be carefully investigated before wind turbines are interconnected. However, the harmonic currents of wind turbines are not… (more)

Subjects/Keywords: Harmonic Impact.; Wind Turbine; OpenDSS; Harmonic Current Predictor; Wind Speed

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APA (6^th Edition):

lamin, P. (2013). Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702113-182026

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

lamin, Pa. “Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines.” 2013. Thesis, NSYSU. Accessed December 11, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702113-182026.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

lamin, Pa. “Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines.” 2013. Web. 11 Dec 2019.

Vancouver:

lamin P. Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines. [Internet] [Thesis]. NSYSU; 2013. [cited 2019 Dec 11]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702113-182026.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

lamin P. Stochastic Harmonic Impact Analysis for Distribution System with Wind Turbines. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702113-182026

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Victoria

15. Optis, Michael. The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity.

Degree: School of Earth and Ocean Sciences, 2015, University of Victoria

URL: http://hdl.handle.net/1828/5997

► The accurate modelling of the wind speed profile at altitudes relevant to wind energy (i.e. up to 200m) is important for preliminary wind resource assessments,… (more)

▼ The accurate modelling of the wind speed profile at altitudes relevant to wind energy (i.e. up to 200m) is important for preliminary wind resource assessments, forecasting of the wind resource, and estimating shear loads on turbine blades. Modelling of the wind profile at these altitudes is particularly challenging in stable stratification due to weak turbulence and the influence of a broad range of additional processes. Models used to simulate the wind profile range from equilibrium-based 1D analytic extrapolation models to time-evolving 3D atmospheric models. Extrapolation models are advantageous due to their low computational requirements but provide a very limited account of atmospheric physics. Conversely, 3D models are more physically comprehensive but have considerably higher computational cost and data requirements. The middle ground between these two approaches has been largely unexplored. The intent of this research is to compare the ability of a range of models of varying complexity to model the wind speed profile up to 200m under stable stratification. I focus in particular on models that are more physically robust than conventional extrapolation models but less computationally expensive than a 3D model. Observational data taken from the 213-m Cabauw meteorological tower in the Netherlands provide a basis for much of this analysis. I begin with a detailed demonstration of the limitations and breakdown in stable stratification of Monin-Obukhov similarity theory (MOST), the theoretical basis for the logarithmic wind speed profile model. I show that MOST (and its various modifications) are reasonably accurate up to 200m for stratification no stronger than weakly stable. At higher stratifications, the underlying assumptions of MOST break down and large errors in the modelled wind profiles are found. I then consider the performance of a two-layer MOST-Ekman layer model, which provides a more physically-comprehensive description of turbulence compared to MOST-based models and accounts for the Coriolis force and large-scale wind forcing (i.e. geostrophic wind). I demonstrate considerable improvements in wind profile accuracy up to 200m compared to MOST-based approaches. Next, I contrast the performance of a two-layer model with a more physically-comprehensive equilibrium-based single-column model (SCM) approach. I demonstrate several limitations of the equilibrium SCM approach - including frequent model breakdown - that limit its usefulness. I also demonstrate no clear association between the accuracy of the wind profile and the order of turbulence closure used in the SCM. Furthermore, baroclinic influences due to the land-sea temperature gradient are shown to have only modest influence on the SCM wind speed profile in stable conditions. Overall, the equilibrium SCM (when it does not break down) is found to generally outperform the two-layer model. Finally, I contrast the performance of the equilibrium SCM with a time-evolving SCM and a time-evolving 3D mesoscale model using a composite set of… Advisors/Committee Members: Monahan, Adam Hugh (supervisor).

Subjects/Keywords: wind power; atmospheric boundary layer; stable stratification; wind speed profile

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APA (6^th Edition):

Optis, M. (2015). The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity. (Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/5997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Optis, Michael. “The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity.” 2015. Thesis, University of Victoria. Accessed December 11, 2019. http://hdl.handle.net/1828/5997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Optis, Michael. “The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity.” 2015. Web. 11 Dec 2019.

Vancouver:

Optis M. The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity. [Internet] [Thesis]. University of Victoria; 2015. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/1828/5997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Optis M. The modelling of the wind profile under stable stratification at heights relevant to wind power: A comparison of models of varying complexity. [Thesis]. University of Victoria; 2015. Available from: http://hdl.handle.net/1828/5997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Wisconsin – Milwaukee

16. Mi, Sibei. Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP.

Degree: MS, Engineering, 2014, University of Wisconsin – Milwaukee

URL: https://dc.uwm.edu/etd/505

► Due to wind is intermittent and less dispatchable, wind power fluctuates as the wind fluctuating and is uncontrollable. Therefore, when wind power accounts for… (more)

Subjects/Keywords: Adaboost_BP; BP; Wind Power Forecasting; Wind Speed Forecasting; Electrical and Electronics

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APA (6^th Edition):

Mi, S. (2014). Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP. (Thesis). University of Wisconsin – Milwaukee. Retrieved from https://dc.uwm.edu/etd/505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mi, Sibei. “Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP.” 2014. Thesis, University of Wisconsin – Milwaukee. Accessed December 11, 2019. https://dc.uwm.edu/etd/505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mi, Sibei. “Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP.” 2014. Web. 11 Dec 2019.

Vancouver:

Mi S. Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP. [Internet] [Thesis]. University of Wisconsin – Milwaukee; 2014. [cited 2019 Dec 11]. Available from: https://dc.uwm.edu/etd/505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mi S. Short-Term Forecasting of Wind Speed and Wind Power Based on BP and Adaboost_BP. [Thesis]. University of Wisconsin – Milwaukee; 2014. Available from: https://dc.uwm.edu/etd/505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Missouri – Columbia

17. Balbi, Adam. Ramp event analysis for western Missouri.

Degree: 2013, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/40178

► This work focuses on rapid increases and decreases in wind speed that produce "ramps" which affect wind power calculations and planning. Average wind speeds are… (more)

Subjects/Keywords: Winds – Speed; Wind power; Wind forecasting – Mathematical models; Power resources – Forecasting

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APA (6^th Edition):

Balbi, A. (2013). Ramp event analysis for western Missouri. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/40178

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Balbi, Adam. “Ramp event analysis for western Missouri.” 2013. Thesis, University of Missouri – Columbia. Accessed December 11, 2019. http://hdl.handle.net/10355/40178.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Balbi, Adam. “Ramp event analysis for western Missouri.” 2013. Web. 11 Dec 2019.

Vancouver:

Balbi A. Ramp event analysis for western Missouri. [Internet] [Thesis]. University of Missouri – Columbia; 2013. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/10355/40178.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Balbi A. Ramp event analysis for western Missouri. [Thesis]. University of Missouri – Columbia; 2013. Available from: http://hdl.handle.net/10355/40178

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

18. Showers, Daniel. System identification for the Clipper Liberty C96 wind turbine.

Degree: MS, Aerospace Engineering and Mechanics, 2014, University of Minnesota

URL: http://hdl.handle.net/11299/169922

► System identification techniques are powerful tools that help improve modeling capabilities of real world dynamic systems. These techniques are well established and have been successfully… (more)

Subjects/Keywords: Effective wind speed; System identification; Wind turbine; Aerospace engineering and mechanics

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APA (6^th Edition):

Showers, D. (2014). System identification for the Clipper Liberty C96 wind turbine. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/169922

Chicago Manual of Style (16^th Edition):

Showers, Daniel. “System identification for the Clipper Liberty C96 wind turbine.” 2014. Masters Thesis, University of Minnesota. Accessed December 11, 2019. http://hdl.handle.net/11299/169922.

MLA Handbook (7^th Edition):

Showers, Daniel. “System identification for the Clipper Liberty C96 wind turbine.” 2014. Web. 11 Dec 2019.

Vancouver:

Showers D. System identification for the Clipper Liberty C96 wind turbine. [Internet] [Masters thesis]. University of Minnesota; 2014. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/11299/169922.

Council of Science Editors:

Showers D. System identification for the Clipper Liberty C96 wind turbine. [Masters Thesis]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/169922

New Jersey Institute of Technology

19. Ge, Chang. Design, construction and characterization of a wind tunnel.

Degree: MSin Materials Science and Engineering - (M.S.), Committee for the Interdisciplinary Program in Materials Science and Engineering, 2015, New Jersey Institute of Technology

URL: https://digitalcommons.njit.edu/theses/230

► The wind tunnel is the most fundamental test equipment for aircraft testing and studying aerodynamics. Because of the complexity of the test-subject's geometry, it… (more)

Subjects/Keywords: Wind tunnels; Low speed wind tunnel; Aerodynamics; Materials Science and Engineering

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APA (6^th Edition):

Ge, C. (2015). Design, construction and characterization of a wind tunnel. (Thesis). New Jersey Institute of Technology. Retrieved from https://digitalcommons.njit.edu/theses/230

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ge, Chang. “Design, construction and characterization of a wind tunnel.” 2015. Thesis, New Jersey Institute of Technology. Accessed December 11, 2019. https://digitalcommons.njit.edu/theses/230.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ge, Chang. “Design, construction and characterization of a wind tunnel.” 2015. Web. 11 Dec 2019.

Vancouver:

Ge C. Design, construction and characterization of a wind tunnel. [Internet] [Thesis]. New Jersey Institute of Technology; 2015. [cited 2019 Dec 11]. Available from: https://digitalcommons.njit.edu/theses/230.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ge C. Design, construction and characterization of a wind tunnel. [Thesis]. New Jersey Institute of Technology; 2015. Available from: https://digitalcommons.njit.edu/theses/230

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

20. Baseer, Mohammed Abdul. Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment.

Degree: PhD, Mechanical and Aeronautical Engineering, 2017, University of Pretoria

URL: http://hdl.handle.net/2263/61314

► An enormous and urgent energy demand is predicted due to the growing global population, increase in power intensive industries, higher living standards, electrification of remote… (more)

Subjects/Keywords: UCTD; Wind speed; Frequency distribution; Weibull parameters; Wind shear exponent

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APA (6^th Edition):

Baseer, M. (2017). Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/61314

Chicago Manual of Style (16^th Edition):

Baseer, Mohammed. “Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment.” 2017. Doctoral Dissertation, University of Pretoria. Accessed December 11, 2019. http://hdl.handle.net/2263/61314.

MLA Handbook (7^th Edition):

Baseer, Mohammed. “Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment.” 2017. Web. 11 Dec 2019.

Vancouver:

Baseer M. Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment. [Internet] [Doctoral dissertation]. University of Pretoria; 2017. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/2263/61314.

Council of Science Editors:

Baseer M. Wind resource assessment and GIS-based site selection methodology for efficient wind power deployment. [Doctoral Dissertation]. University of Pretoria; 2017. Available from: http://hdl.handle.net/2263/61314

Univerzitet u Beogradu

21. Đurišić, Željko, 1972-. Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu.

Degree: Elektrotehnički fakultet, 2015, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:9296/bdef:Content/get

►

Elektrotehnika-Elektroenergetski sistemi / Electrical enegineering-Electric power systems

Predmet istraživanja doktorske disertacije je modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i… (more)

▼

Elektrotehnika-Elektroenergetski sistemi / Electrical enegineering-Electric power systems

Predmet istraživanja doktorske disertacije je modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu (EES). Osnovni doprinosi radu su: 1. Razvijen je model za visinsku ekstrapolaciju merenih podataka o brzini vetra za procenu proizvodnje vetroelektrana. Model se bazira na metodi minimuma sume kvadrata odstupanja. Primenom ovog modela na set merenih podataka o brzini vetra sa najmanje tri visine dobija se sintetički set mernih podataka o brzini vetra na željenoj visini postavljanja vetroturbine. Estimirana baza mernih podataka se može koristiti kao ulazni set podataka za profesionalne softvere za regionalnu analizu resursa vetra, kao i procenu proizvodnje vetroelektrana. Algoritam je testiran korišćenjem realnih merenih podataka o brzini vetra sa tri lokacije koje karakterišu različiti topografski i klimatski uslovi. Sprovedene analize pokazuju da visinska ekstrapolacija merenih podataka o brzini vetra, prema predloženom modelu, daje bolje rezultate u proceni resursa energije vetra i smanjuje grešku u proceni proizvodnje vetroelektrana u odnosu na klasičnu primenu programa WAsP, koji standardno koristi podatke samo sa jedne merne visine. 2. Razvijen je model dinamičkog koeficijenta smicanja vetra. Visinski profil brzine vetra se u vetroenergetici opisuje sa dva modela i to stepenim zakonom i logaritamskim zakonom. Oba modela se praktično podjednako koriste u inženjerskoj praksi. Nedostatak oba modela je što u sebi sadrže fiksne parametre, koji ne omogućavaju dinamičko sagledavanje profila brzine vetra. Kombinujući ova dva pristupa u tezi je analitički raspregnut uticaj dominantnih faktora koji utiču na visinski profil brzine vetra. U razvijenom modelu visinski profil brzine vetra se modeluje sa koeficijentom smicanja vetra koji ima dve komponente: jednu statičku, koja je posledica hrapavosti terena, i drugu, vremenski promenljivu komponentu, koja uvažava dijabatske promene visinskog profila brzine vetra. Razvijeni model ima značajnu praktičnu 5 primenu u regionalnoj analizi potencijala energije vetra, kao i u proceni prosečne višegodišnje proizvodnje vetroelektrane na osnovu kratkoročnih merenja. Praktična primenljivost modela je testirana na realnim projektima vetroelektrana u regionu Banata i Pešterske visoravni...

Advisors/Committee Members: Đurišić, Željko, 1972-.

Subjects/Keywords: wind resource; wind speed profile; wind power plants; production time profile; electricity market; power losses

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Đurišić, Željko, 1. (2015). Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:9296/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Đurišić, Željko, 1972-. “Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu.” 2015. Thesis, Univerzitet u Beogradu. Accessed December 11, 2019. https://fedorabg.bg.ac.rs/fedora/get/o:9296/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Đurišić, Željko, 1972-. “Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu.” 2015. Web. 11 Dec 2019.

Vancouver:

Đurišić, Željko 1. Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu. [Internet] [Thesis]. Univerzitet u Beogradu; 2015. [cited 2019 Dec 11]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:9296/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Đurišić, Željko 1. Modelovanje i analiza uticaja prostornog i vremenskog profila snage vetra u projektovanju i eksploataciji vetroelektrana u elektroenergetskom sistemu. [Thesis]. Univerzitet u Beogradu; 2015. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:9296/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle

22. Kesby, Joss Edwin. The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines.

Degree: PhD, 2019, University of Newcastle

URL: http://hdl.handle.net/1959.13/1398137

►

Research Doctorate - Doctor of Philosophy (PhD)

The addition of a diffuser to a small Horizontal Axis Wind Turbine (HAWT) can significantly improve the performance… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

The addition of a diffuser to a small Horizontal Axis Wind Turbine (HAWT) can significantly improve the performance of the wind turbine. It has long been posited that the resultant wind turbine, known as a Diffuser Augmented Wind Turbine (DAWT), can have improved performance over a bare turbine of the same size with the additional benefits of improved noise mitigation and operation in turbulent wind conditions. It has been shown that the performance of the diffuser affects the performance of the wind turbine blades and vice versa, however, previous work in the field of DAWT optimisation has focussed either on optimising blades for a specific diffuser, or optimising a diffuser and adding a standard HAWT for use within it, both of which are not ideal for the optimisation of the complete system. The work presented in this thesis documents the development and implementation of a new simulation methodology, designated the Combined CFD/BEM Method, to predict the starting performance and power output of a DAWT. This new approach allows the diffuser to be optimised in conjunction with the turbine blades, a process that is computationally intensive using existing methods. This new method can rapidly assess the performance of the DAWT, using optimisation processes heretofore too computationally expensive to be practicable. Effective optimisation techniques which require thousands of geometries to be assessed, such as genetic algorithms, can be implemented using the Combined CFD/BEM Method to optimise the geometry of a DAWT. The optimisation process described in this thesis has utilised genetic algorithms to maximise the Annual Energy Production (AEP) of a DAWT located at a typical small wind turbine site. The wind data for the typical site was obtained from the International Electrotechnical Commission’s (IEC) standards for small wind turbines. Using rapid prototyping methods, the two highest performing DAWTs nominated by the Combined CFD/BEM Method, with diffuser radii of 0.203 m and 0.217 m, were constructed and experimentally tested in the large recirculating wind tunnel at the University of Newcastle, Australia. Two HAWTs with blades of the same radii as the diffusers of the two DAWTs were also optimised and constructed for experimental testing to compare to the performance of the DAWTs. The different wind turbine configurations were experimentally tested for starting performance and mechanical power output for wind speeds between 5 m/s and 10 m/s inclusive. The Combined CFD/BEM Method was shown to accurately predict the starting wind speed of the tested geometries, which were all within 11.4% of the experimental results. The combined CFD/BEM Method underpredicted the power output at the lower tested wind speeds and overpredicted at the higher speeds. For the lower wind speeds, the largest underprediction was 26.5% at 5 m/s with the majority of the predicted power outputs within 10% of experimental results. The largest overprediction at the higher wind speeds was 9.3% at…

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering.

Subjects/Keywords: Diffuser Augmented Wind Turbine; wind turbine; wind speed; Combined CFD/BEM Method

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APA (6^th Edition):

Kesby, J. E. (2019). The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1398137

Chicago Manual of Style (16^th Edition):

Kesby, Joss Edwin. “The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines.” 2019. Doctoral Dissertation, University of Newcastle. Accessed December 11, 2019. http://hdl.handle.net/1959.13/1398137.

MLA Handbook (7^th Edition):

Kesby, Joss Edwin. “The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines.” 2019. Web. 11 Dec 2019.

Vancouver:

Kesby JE. The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines. [Internet] [Doctoral dissertation]. University of Newcastle; 2019. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/1959.13/1398137.

Council of Science Editors:

Kesby JE. The development and experimental validation of a simulation method for the optimisation of diffuser augmented wind turbines. [Doctoral Dissertation]. University of Newcastle; 2019. Available from: http://hdl.handle.net/1959.13/1398137

University of Louisville

23. Russ, David. CFD modeling of entrance and exit geometries of a wind speed accelerator.

Degree: M. Eng., 2011, University of Louisville

URL: 10.18297/etd/1241 ; https://ir.library.louisville.edu/etd/1241

► Current wind power technology is not economically feasible throughout most of the United States due to low average wind speeds. A design for a… (more)

Subjects/Keywords: Wind power; Computational fluid dynamics; Wind concentrator; Wind speed accelerator; CFD; Chemical Engineering

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APA (6^th Edition):

Russ, D. (2011). CFD modeling of entrance and exit geometries of a wind speed accelerator. (Masters Thesis). University of Louisville. Retrieved from 10.18297/etd/1241 ; https://ir.library.louisville.edu/etd/1241

Chicago Manual of Style (16^th Edition):

Russ, David. “CFD modeling of entrance and exit geometries of a wind speed accelerator.” 2011. Masters Thesis, University of Louisville. Accessed December 11, 2019. 10.18297/etd/1241 ; https://ir.library.louisville.edu/etd/1241.

MLA Handbook (7^th Edition):

Russ, David. “CFD modeling of entrance and exit geometries of a wind speed accelerator.” 2011. Web. 11 Dec 2019.

Vancouver:

Russ D. CFD modeling of entrance and exit geometries of a wind speed accelerator. [Internet] [Masters thesis]. University of Louisville; 2011. [cited 2019 Dec 11]. Available from: 10.18297/etd/1241 ; https://ir.library.louisville.edu/etd/1241.

Council of Science Editors:

Russ D. CFD modeling of entrance and exit geometries of a wind speed accelerator. [Masters Thesis]. University of Louisville; 2011. Available from: 10.18297/etd/1241 ; https://ir.library.louisville.edu/etd/1241

Baylor University

24. Burdett, Timothy A. Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds.

Degree: Engineering., 2012, Baylor University

URL: http://hdl.handle.net/2104/8411

► Renewable sources of energy, such as wind, are necessary to meet the growing demand as conventional energy sources are depleted. Very little research has been… (more)

Subjects/Keywords: Aerodynamics.; Low Reynolds numbers.; Class 2 wind.; Renewable energy.; Wind turbines.; Small-scale wind turbines.; Fixed-pitch wind turbines.; Low-speed wind turbines.; Wind turbine design.; Wind turbine experiments.

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APA (6^th Edition):

Burdett, T. A. (2012). Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds. (Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/8411

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Burdett, Timothy A. “Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds. ” 2012. Thesis, Baylor University. Accessed December 11, 2019. http://hdl.handle.net/2104/8411.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Burdett, Timothy A. “Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds. ” 2012. Web. 11 Dec 2019.

Vancouver:

Burdett TA. Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds. [Internet] [Thesis]. Baylor University; 2012. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/2104/8411.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Burdett TA. Aerodynamic design considerations for small-scale, fixed-pitch, horizontal-axis wind turbines operating in class 2 winds. [Thesis]. Baylor University; 2012. Available from: http://hdl.handle.net/2104/8411

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Florida International University

25. Fesharaki, Mohammad. 3-D Dynamic Analysis of High-Speed Railroad Track.

Degree: PhD, Civil Engineering, 2017, Florida International University

URL: http://digitalcommons.fiu.edu/etd/3366 ; 10.25148/etd.FIDC001968 ; FIDC001968

► High-Speed Rail (HSR) as a fast, reliable and environmentally friendly mode of transportation has received a lot of attention in recent decades. The International… (more)

▼ High-Speed Rail (HSR) as a fast, reliable and environmentally friendly mode of transportation has received a lot of attention in recent decades. The International Union of Railways reported that there are more than 18600 miles of HSR in operation and about 1.6 billion passengers per year are carried by them. Although there are plans for HSR in many states including Florida, the United States, however, is still hesitant to develop its own HSR network. One of the main barriers to developing high-speed rail is excessive vibration propagation to the media which may cause annoyance to people who live in the track neighborhood. Train induced vibration also contributes to track settlement, developing track flaws, and increasing life cycle cost of track and supporting structures. The aim of this research is to address this problem by conducting a comprehensive investigation into track dynamics. For this purpose, three-dimensional mass-spring-damper models of vehicle, track and supporting structures were developed and matrices of mass, stiffness, and damping of each subsystem were formed. The response of the whole system was, then, determined by coupling the subsystems using Hertz contact theory. The differential equations of the coupled system were solved by the Newmark integration method and the results including vertical and lateral displacements and forces were presented in the time domain. Since the purpose of this dissertation is to quantify the effect of track and vehicle condition on vibration level, rail defects were also taken into account and rail random irregularities for the vertical profile, Gauge, alignment and cross level (super elevation) were incorporated into a numerical solution. The results of the study show the effect of track and vehicle parameters on the response of the vehicle, track, and substructures. Since Florida and some other states in the United States are very prone to hurricanes, an investigation was conducted into the effect of wind speed on vehicle stability. For this purpose, a curved beam was modeled to consider the influence of track curvature, cant deficiency, wind speed and train speed simultaneously. The results from the study show the maximum allowable values of train speed and axle load for different wind speeds. The findings can be used to decide under what circumstances there is a risk of vehicle overturning and how to avoid it. Advisors/Committee Members: Ton-Lo Wang, Atorod Azizinamini, Seung Jae Lee, Ioannis Zisis, Ali Mostafavi.

Subjects/Keywords: high-speed rail; rail defects; vehicle-track interaction; wind speed fluctuations; Civil Engineering; Structural Engineering

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APA (6^th Edition):

Fesharaki, M. (2017). 3-D Dynamic Analysis of High-Speed Railroad Track. (Doctoral Dissertation). Florida International University. Retrieved from http://digitalcommons.fiu.edu/etd/3366 ; 10.25148/etd.FIDC001968 ; FIDC001968

Chicago Manual of Style (16^th Edition):

Fesharaki, Mohammad. “3-D Dynamic Analysis of High-Speed Railroad Track.” 2017. Doctoral Dissertation, Florida International University. Accessed December 11, 2019. http://digitalcommons.fiu.edu/etd/3366 ; 10.25148/etd.FIDC001968 ; FIDC001968.

MLA Handbook (7^th Edition):

Fesharaki, Mohammad. “3-D Dynamic Analysis of High-Speed Railroad Track.” 2017. Web. 11 Dec 2019.

Vancouver:

Fesharaki M. 3-D Dynamic Analysis of High-Speed Railroad Track. [Internet] [Doctoral dissertation]. Florida International University; 2017. [cited 2019 Dec 11]. Available from: http://digitalcommons.fiu.edu/etd/3366 ; 10.25148/etd.FIDC001968 ; FIDC001968.

Council of Science Editors:

Fesharaki M. 3-D Dynamic Analysis of High-Speed Railroad Track. [Doctoral Dissertation]. Florida International University; 2017. Available from: http://digitalcommons.fiu.edu/etd/3366 ; 10.25148/etd.FIDC001968 ; FIDC001968

North-West University

26. Den Heijer, Francois Malan. Development of an active pitch control system for wind turbines / F.M. den Heijer .

Degree: 2008, North-West University

URL: http://hdl.handle.net/10394/2635

► A wind turbine needs to be controlled to ensure its safe and optimal operation, especially during high wind speeds. The most common control objectives are… (more)

▼ A wind turbine needs to be controlled to ensure its safe and optimal operation, especially during high wind speeds. The most common control objectives are to limit the power and rotational speed of the wind turbine by using pitch control. Aero Energy is a company based in Potchefstroom, South Africa, that has been developing and manufacturing wind turbine blades since 2000. Their most popular product is the AE1kW blades. The blades have a tendency to over-speed in high wind speeds and the cut-in wind speed must be improved. The objective of this study was to develop an active pitch control system for wind turbines. A prototype active pitch control system had to be developed for the AE1kW blades. The objectives of the control system are to protect the wind turbine from over-speeding and to improve start-up performance. An accurate model was firstly developed to predict a wind turbine’s performance with active pitch control. The active pitch control was implemented by means of a two-stage centrifugal governor. The governor uses negative or stalling pitch control. The first linear stage uses a soft spring to provide improved start-up performance. The second non-linear stage uses a hard spring to provide over-speed protection. The governor was manufactured and then tested with the AE1kW blades. The governor achieved both the control objectives of over-speed protection and improved start-up performance. The models were validated by the results. It was established that the two-stage centrifugal governor concept can be implemented on any wind turbine, provided the blades and tower are strong enough to handle the thrust forces associated with negative pitch control. It was recommended that an active pitch control system be developed that uses positive pitching for the over-speed protection, which will eliminate the large thrust forces. Keywords: pitch control, wind turbine, centrifugal governor, over-speed protection, cut-in wind speed, blade element-momentum theory, rotor, generator, stall, feathering.

Subjects/Keywords: Pitch control; Wind turbine; Centrifugal governor; Over-speed protection; Cut-in wind speed; Blade element-momentum theory; Rotor; Generator; Stall; Feathering

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APA (6^th Edition):

Den Heijer, F. M. (2008). Development of an active pitch control system for wind turbines / F.M. den Heijer . (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/2635

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Den Heijer, Francois Malan. “Development of an active pitch control system for wind turbines / F.M. den Heijer .” 2008. Thesis, North-West University. Accessed December 11, 2019. http://hdl.handle.net/10394/2635.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Den Heijer, Francois Malan. “Development of an active pitch control system for wind turbines / F.M. den Heijer .” 2008. Web. 11 Dec 2019.

Vancouver:

Den Heijer FM. Development of an active pitch control system for wind turbines / F.M. den Heijer . [Internet] [Thesis]. North-West University; 2008. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/10394/2635.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Den Heijer FM. Development of an active pitch control system for wind turbines / F.M. den Heijer . [Thesis]. North-West University; 2008. Available from: http://hdl.handle.net/10394/2635

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

27. Kunwar, Saruna. Production of cryogens using wind energy for use in deep mine cooling and ventilation.

Degree: 2017, Laurentian University

URL: https://zone.biblio.laurentian.ca/handle/10219/2838

► This research work, named as ‘CryoVent’, was focused on determining the feasibility of using wind energy, to produce liquefied gases (cryogens) continuously in a safe… (more)

▼ This research work, named as ‘CryoVent’, was focused on determining the feasibility of using wind energy, to produce liquefied gases (cryogens) continuously in a safe approach that can be used for the cooling and ventilation of underground mines. The experimental work performed suggested that the continuous production of liquefied gases with variable input work is practical. The average specific power consumption for liquefaction of nitrogen in this work was 7.86 kWh/kg using the refrigeration produced by helium. This is ~20 times higher than that consumed by industrial scale gas liquefaction systems, but is practical for a small scale system. This specific power consumption could probably be lowered if the working fluid itself is liquefied. Analysis on wind speed variability and wind speed data synthesis were also performed which suggested presence of multi-fractal nature in wind speed data that represent the temporal variation. A new method developed to generate high sampling frequency wind speed data from available low sampling frequency wind speed data can have contribution in all sectors when there is a need of higher sampling frequency time series data for simulation/study purposes. The liquid nitrogen mass flow rate (kg/s) increased with increase in compressor motor frequency and also when operating at variable motor input frequency. However, the average compressor power consumption also increased compared to average power consumption during operation at standard motor frequency of 60 Hz. This was in a laboratory scale liquefaction system and needs to be tested in the large scale system experimentally. With 1 kg/s of liquefied nitrogen supplied, ~459 kWr of cooling power is available to cool the deep mine air which is at 30-400C. A volumetric flow rate of 0.062 m3/s of liquefied air can provide a cooling power equivalent to that provided by a volumetric flow rate of 4000 m3/s of atmospheric air, which is the requirement of some of the biggest mines in the world. The hydraulic wind turbine as proposed in this work can eliminate the system start-up issues following the calm period, which are typical concerns with the wind energy integrations. This research work has provided the required modeling and simulation results that are crucial in development of the full scale ‘CryoVent’.

Subjects/Keywords: CryoVent; liquefied gases; gas liquefaction system; wind speed data synthesis; hydraulic wind turbine

11 more images…

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APA (6^th Edition):

Kunwar, S. (2017). Production of cryogens using wind energy for use in deep mine cooling and ventilation. (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/handle/10219/2838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kunwar, Saruna. “Production of cryogens using wind energy for use in deep mine cooling and ventilation. ” 2017. Thesis, Laurentian University. Accessed December 11, 2019. https://zone.biblio.laurentian.ca/handle/10219/2838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kunwar, Saruna. “Production of cryogens using wind energy for use in deep mine cooling and ventilation. ” 2017. Web. 11 Dec 2019.

Vancouver:

Kunwar S. Production of cryogens using wind energy for use in deep mine cooling and ventilation. [Internet] [Thesis]. Laurentian University; 2017. [cited 2019 Dec 11]. Available from: https://zone.biblio.laurentian.ca/handle/10219/2838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kunwar S. Production of cryogens using wind energy for use in deep mine cooling and ventilation. [Thesis]. Laurentian University; 2017. Available from: https://zone.biblio.laurentian.ca/handle/10219/2838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

28. Chin, Ching-jen. Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast.

Degree: Master, IAMPUT, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0914113-040500

► The weather in Taiwan is influenced by annual monsoon. In summer, typhoons, which develop between Philippines and Guan, come from southeastern Taiwan to northwestward and… (more)

Subjects/Keywords: Wind Speed Inversion; Ocean Ambient Noise; Regression Analysis; Stable Wind Event; Northeastern Taiwan

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APA (6^th Edition):

Chin, C. (2013). Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0914113-040500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chin, Ching-jen. “Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast.” 2013. Thesis, NSYSU. Accessed December 11, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0914113-040500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chin, Ching-jen. “Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast.” 2013. Web. 11 Dec 2019.

Vancouver:

Chin C. Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast. [Internet] [Thesis]. NSYSU; 2013. [cited 2019 Dec 11]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0914113-040500.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chin C. Wind Speed Inversion by Ocean Ambient Noise off Su-ao Coast. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0914113-040500

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ryerson University

29. Palanisamy, Rangaraj. Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration.

Degree: 2017, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A7212

► Tornadoes are disastrous, naturally occurring atmospheric phenomena; they cause fatalities; they damage properties with an exceptional combination of translational and rotational velocities. Despite many studies… (more)

Subjects/Keywords: Winds – Speed – Mathematical models; Winds – Measurement; Wind-Pressure; Tornadoes; Buildings – Aerodynamics; Wind resistant design

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Palanisamy, R. (2017). Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A7212

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Palanisamy, Rangaraj. “Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration.” 2017. Thesis, Ryerson University. Accessed December 11, 2019. https://digital.library.ryerson.ca/islandora/object/RULA%3A7212.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Palanisamy, Rangaraj. “Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration.” 2017. Web. 11 Dec 2019.

Vancouver:

Palanisamy R. Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration. [Internet] [Thesis]. Ryerson University; 2017. [cited 2019 Dec 11]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7212.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Palanisamy R. Tornado dynamics study using immersed boundary (IB) - Lattice Boltzmann Method (LBM) on a 7-cylinder building configuration. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7212

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Sydney

30. Sadeghi, Mahsan. Thermal Comfort Performance of Wind Towers in the Australian Residential Context .

Degree: 2017, University of Sydney

URL: http://hdl.handle.net/2123/17121

► This study investigates the performance of a wind tower in contemporary medium-density residential structures in subtropical Sydney, Australia. Wind towers have been a traditional residential… (more)

▼ This study investigates the performance of a wind tower in contemporary medium-density residential structures in subtropical Sydney, Australia. Wind towers have been a traditional residential and commercial natural ventilation system for more than three thousand years in Persia and neighbouring countries. Wind-induced ventilation offsets solar gain by cooling the building structure and improving occupant comfort in warm to hot weather by increasing indoor air movement. As Australian metropolitan cities increasingly tend towards medium-density apartment-style housing, urban canyons are created where pollution and noise result in a heavy dependence on air conditioning behind sealed windows. Concerns about climate change and global warming also support the introduction of a natural ventilation system to provide occupant comfort and reduce cooling load. This four-phase study evaluates wind tower natural ventilation using wind-driven indoor air movement for occupant comfort. First, a sealed scale model of a typical residential apartment incorporating a wind tower was tested within a boundary layer wind tunnel under three urban context scenarios, assessing the effects of windward obstructions on the external pressure distribution over the building model and the associated wind tower. A large number of internal and external geometrical configurations of wind tower were analysed leading to an optimised wind tower design. In the second phase, this design was exposed to Sydney’s contemporary meteorological data to assess its applicability in the Sydney climate. The third phase of study quantified comfort performance of a wind tower for the six warmest months of the year. In the fourth phase, the cumulative total improvement in indoor comfort temperatures was applied in an energy calculation procedure to predict the potential of wind tower ventilation to reduce electricity demand and carbon emission. The results indicated that, in ambient temperatures of 23°C and above, the optimised wind tower in the most conservative scenario increased indoor air speeds at average 0.4 m/s and improved indoor comfort by 4935 degree hours (ΣΔSET*) compared to the default design relying on through-window ventilation. The wind tower produced an average cooling potential (ΔSET*) of 3°C and decreased cooling loads by 25 kWh/m2/y.

Subjects/Keywords: Natural ventilation; wind tower; wind tunnel; air speed; thermal comfort; design optimisation

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sadeghi, M. (2017). Thermal Comfort Performance of Wind Towers in the Australian Residential Context . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/17121

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sadeghi, Mahsan. “Thermal Comfort Performance of Wind Towers in the Australian Residential Context .” 2017. Thesis, University of Sydney. Accessed December 11, 2019. http://hdl.handle.net/2123/17121.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sadeghi, Mahsan. “Thermal Comfort Performance of Wind Towers in the Australian Residential Context .” 2017. Web. 11 Dec 2019.

Vancouver:

Sadeghi M. Thermal Comfort Performance of Wind Towers in the Australian Residential Context . [Internet] [Thesis]. University of Sydney; 2017. [cited 2019 Dec 11]. Available from: http://hdl.handle.net/2123/17121.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sadeghi M. Thermal Comfort Performance of Wind Towers in the Australian Residential Context . [Thesis]. University of Sydney; 2017. Available from: http://hdl.handle.net/2123/17121

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations