Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

Language: English

You searched for subject:(Turbogenerators). Showing records 1 – 3 of 3 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


University of New South Wales

1. Seyoum, Dawit. The dynamic analysis and control of a self-excited induction generator driven by a wind turbine.

Degree: Electrical Engineering & Telecommunications, 2003, University of New South Wales

This thesis covers the analysis, dynamic modelling and control of an isolated selfexcited induction generator (SEIG) driven by a variable speed wind turbine. The voltage build up process of an isolated induction generator excited by AC capacitors starts from charge in the capacitors or from a remnant magnetic field in the core. A similar voltage build up is obtained when the isolated induction generator is excited using an inverter/rectifier system with a single DC capacitor on the DC link of the converter. In this type of excitation the voltage build up starts from a small DC voltage in the DC link and is implemented using vector control. The dynamic voltage, current, power and frequency developed by the induction generator have been analysed, simulated and verified experimentally for the loaded and unloaded conditions while the speed was varied or kept constant. Results which are inaccessible in the experimental setup have been predicted using the simulation algorithm.To model the self excited induction generator accurate values of the parameters of the induction machine are required. A detailed analysis for the parameter determination of induction machines using a fast data acquisition technique and a DSP system has been investigated. A novel analysis and model of a self-excited induction generator that takes iron loss into account is presented in a simplified and understandable way.The use of the variation in magnetising inductance with voltage leads to an accurate prediction of whether or not self-excitation will occur in a SEIG for various capacitance values and speeds in both the loaded and unloaded cases. The characteristics of magnetising inductance, Lm, with respect to the rms induced stator voltage or magnetising current determines the regions of stable operation as well as the minimum generated voltage without loss of self-excitation.In the SEIG, the frequency of the generated voltage depends on the speed of the prime mover as well as the condition of the load. With the speed of the prime mover of an isolated SEIG constant, an increased load causes the magnitude of the generated voltage and frequency to decrease. This is due to a drop in the speed of the rotating magnetic field. When the speed of the prime mover drops with load then the decrease in voltage and frequency will be greater than for the case where the speed is held constant. Dynamic simulation studies shows that increasing the capacitance value can compensate for the voltage drop due to loading, but the drop in frequency can be compensated only by increasing the speed of the rotor.In vector control of the SEIG, the reference flux linkage varies according to the variation in rotor speed. The problems associated with the estimation of stator flux linkage using integration are investigated and an improved estimation of flux linkage is developed that compensates for the integration error.Analysis of the three-axes to two-axes transformation and its application in the measurement of rms current, rms voltage, active power and power factor from data…

Subjects/Keywords: Turbogenerators; Wind turbines; Electric machinery; Induction

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Seyoum, D. (2003). The dynamic analysis and control of a self-excited induction generator driven by a wind turbine. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/22008 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:715/SOURCE1?view=true

Chicago Manual of Style (16th Edition):

Seyoum, Dawit. “The dynamic analysis and control of a self-excited induction generator driven by a wind turbine.” 2003. Doctoral Dissertation, University of New South Wales. Accessed October 24, 2020. http://handle.unsw.edu.au/1959.4/22008 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:715/SOURCE1?view=true.

MLA Handbook (7th Edition):

Seyoum, Dawit. “The dynamic analysis and control of a self-excited induction generator driven by a wind turbine.” 2003. Web. 24 Oct 2020.

Vancouver:

Seyoum D. The dynamic analysis and control of a self-excited induction generator driven by a wind turbine. [Internet] [Doctoral dissertation]. University of New South Wales; 2003. [cited 2020 Oct 24]. Available from: http://handle.unsw.edu.au/1959.4/22008 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:715/SOURCE1?view=true.

Council of Science Editors:

Seyoum D. The dynamic analysis and control of a self-excited induction generator driven by a wind turbine. [Doctoral Dissertation]. University of New South Wales; 2003. Available from: http://handle.unsw.edu.au/1959.4/22008 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:715/SOURCE1?view=true


Kansas State University

2. Chien, Karl Chia-Chang. Construction and testing of a reinforced concrete hyperbolic cooling tower model.

Degree: 1983, Kansas State University

Subjects/Keywords: Cooling towers; Turbogenerators – Cooling; Concrete construction – Testing

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Chien, K. C. (1983). Construction and testing of a reinforced concrete hyperbolic cooling tower model. (Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/12907

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

Chicago Manual of Style (16th Edition):

Chien, Karl Chia-Chang. “Construction and testing of a reinforced concrete hyperbolic cooling tower model.” 1983. Thesis, Kansas State University. Accessed October 24, 2020. http://hdl.handle.net/2097/12907.

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

MLA Handbook (7th Edition):

Chien, Karl Chia-Chang. “Construction and testing of a reinforced concrete hyperbolic cooling tower model.” 1983. Web. 24 Oct 2020.

Vancouver:

Chien KC. Construction and testing of a reinforced concrete hyperbolic cooling tower model. [Internet] [Thesis]. Kansas State University; 1983. [cited 2020 Oct 24]. Available from: http://hdl.handle.net/2097/12907.

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

Council of Science Editors:

Chien KC. Construction and testing of a reinforced concrete hyperbolic cooling tower model. [Thesis]. Kansas State University; 1983. Available from: http://hdl.handle.net/2097/12907

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


Montana State University

3. Donnelly, Matthew Kenneth. Control of a dynamic brake to reduce turbine-generator shaft transient torques.

Degree: PhD, College of Engineering, 1991, Montana State University

Subjects/Keywords: Subsynchronous resonance (Electrical engineering).; Electric generators.; Turbogenerators.; Dynamics.

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Donnelly, M. K. (1991). Control of a dynamic brake to reduce turbine-generator shaft transient torques. (Doctoral Dissertation). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/6856

Chicago Manual of Style (16th Edition):

Donnelly, Matthew Kenneth. “Control of a dynamic brake to reduce turbine-generator shaft transient torques.” 1991. Doctoral Dissertation, Montana State University. Accessed October 24, 2020. https://scholarworks.montana.edu/xmlui/handle/1/6856.

MLA Handbook (7th Edition):

Donnelly, Matthew Kenneth. “Control of a dynamic brake to reduce turbine-generator shaft transient torques.” 1991. Web. 24 Oct 2020.

Vancouver:

Donnelly MK. Control of a dynamic brake to reduce turbine-generator shaft transient torques. [Internet] [Doctoral dissertation]. Montana State University; 1991. [cited 2020 Oct 24]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6856.

Council of Science Editors:

Donnelly MK. Control of a dynamic brake to reduce turbine-generator shaft transient torques. [Doctoral Dissertation]. Montana State University; 1991. Available from: https://scholarworks.montana.edu/xmlui/handle/1/6856

.