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University of Kansas
1.
Pochiraju, Anirudh.
Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS.
Degree: MS, Mechanical Engineering, 2012, University of Kansas
URL: http://hdl.handle.net/1808/10191 
► This thesis presents a flywheel based mechanical regenerative braking system (RBS) concept for a Formula SAE type race car application, to improve the performance and/or…
(more)
▼ This thesis presents a flywheel based mechanical
regenerative braking system (RBS) concept for a Formula SAE type race car application, to improve the performance and/or efficiency of the racecar. A mechanical
system is chosen to eliminate losses related to energy conversion while capturing the rotational
braking energy. The Flywheel-
Regenerative Braking System (f-RBS) concept consists of a metal flywheel design of truncated cone geometry for the energy storage
system (ESS) component and a V-belt CVT with a fixed gear for the transmission component of the RBS
system. Racecar lap data and racecar specifications are used for designing/sizing the components. Mathematical models are developed for design, integration and operation of the f-RBS
system. It was observed that a maximum of 27 % of energy requirements of the racecar can be supplied by the f-RBS. Also, a Virtual test rig model is created using MSC ADAMS, an advanced dynamics/virtual prototyping software, in order to test the whole f-RBS
system for performance, as a preliminary alternative to experimental testing. Initial testing is performed to validate the
regenerative braking principle employed, to establish the actual operating limits of the virtual test rig and for an initial analysis of performance improvement by utilization of the f-RBS
system. From the results, it was inferred that using the f-RBS concept can have a significant impact in recycling wasteful the
braking energy and provide additional energy to the racecar.
Advisors/Committee Members: Sorem, Robert M (advisor), Faddis, Terry (cmtemember), Umholtz, Robert C. (cmtemember).
Subjects/Keywords: Mechanical engineering; Automotive engineering; Flywheel; Formula sae; Kers; Racecar; Regenerative braking system; Virtual testing
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APA (6th Edition):
Pochiraju, A. (2012). Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/10191
Chicago Manual of Style (16th Edition):
Pochiraju, Anirudh. “Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS.” 2012. Masters Thesis, University of Kansas. Accessed January 22, 2021.
http://hdl.handle.net/1808/10191.
MLA Handbook (7th Edition):
Pochiraju, Anirudh. “Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS.” 2012. Web. 22 Jan 2021.
Vancouver:
Pochiraju A. Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/1808/10191.
Council of Science Editors:
Pochiraju A. Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10191
University of Windsor
2.
Zhang, Yi.
The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System.
Degree: MA, Mechanical, Automotive, and Materials Engineering, 2017, University of Windsor
URL: https://scholar.uwindsor.ca/etd/7310
► The growing issues of energy shortage and the environmental crisis has resulted in new challenges for the automotive industry. Conventional commercial vehicles, such as refuse…
(more)
▼ The growing issues of energy shortage and the environmental crisis has resulted in new challenges for the automotive industry. Conventional commercial vehicles, such as refuse trucks and delivery vehicles, consume significantly more energy than other on-road vehicles since they have the characteristic of frequent start/stop with high moment of inertia and drive at low speeds on designated city routes. It is important to make these vehicles more fuel efficient and environmentally friendly. The hybrid commercial vehicle is a promising solution to reduce emissions and to meet the future vehicle emission standard since it is generally equipped with
braking energy regeneration systems to recover the kinematic loss from frequent
braking. This paper introduces a type of all-wheel drive hybrid concept suggested by Dr. Leo Oriet; the new concept allows commercial vehicles to have a significant improvement in kinetic
braking energy recovery without sacrificing
braking safety. Without mechanical connection involved to transfer energy within the powertrain, greater powertrain efficiency can be achieved. The research is based on the all-wheel drive with a two-axles
regenerative braking strategy and driveline control unit. The vehicle model and driveline control unit were executed using AVL CRUISE to demonstrate its reliable
braking energy regeneration
system, effective energy management and emission reduction. Finally, the power
system and engine operating condition, as well as vehicle driving mode, were analyzed after simulation to ensure the whole powertrain component functions together with high efficiency and significant reliability.
Advisors/Committee Members: Oriet, Leo.
Subjects/Keywords: Commercial Vehicle Applications; Electrify Commercial Vehicles; High Efficiency Alternative Drivelines; Hybrid Powertrain; Model Based Development and Calibration; Regenerative Braking System
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APA (6th Edition):
Zhang, Y. (2017). The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7310
Chicago Manual of Style (16th Edition):
Zhang, Yi. “The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System.” 2017. Masters Thesis, University of Windsor. Accessed January 22, 2021.
https://scholar.uwindsor.ca/etd/7310.
MLA Handbook (7th Edition):
Zhang, Yi. “The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System.” 2017. Web. 22 Jan 2021.
Vancouver:
Zhang Y. The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System. [Internet] [Masters thesis]. University of Windsor; 2017. [cited 2021 Jan 22].
Available from: https://scholar.uwindsor.ca/etd/7310.
Council of Science Editors:
Zhang Y. The Application of Regenerative Braking System to the Commercial Hybrid Vehicles with All-Wheel Drive System. [Masters Thesis]. University of Windsor; 2017. Available from: https://scholar.uwindsor.ca/etd/7310
McMaster University
3.
Heinrich, Maximilian Theobald Ewald.
On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation.
Degree: MASc, 2015, McMaster University
URL: http://hdl.handle.net/11375/18085
► This research introduces a high-performance electric taxiing system (ETS) as a modern solution to improve the on-ground operations of today’s aircraft, which are conventionally powered…
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▼ This research introduces a high-performance electric taxiing system (ETS) as a modern solution to improve the on-ground operations of today’s aircraft, which are conventionally powered through the main engines. The presented ETS is propelled by electric motors, integrated into the main landing gear of a state-of-the-art midsize commercial aircraft, and powered by an additional not quantified electrical energy storage system. The proposed system can therefore operate autonomously from any aircraft-internal power source, i.e. Auxiliary Power Unit or equivalent. The main objective of this work is to assess the energy consumption of the introduced ETS while considering energy recuperation due to regenerative braking. The ETS powertrain is sized to match modern conventional taxi performances that were seen in 36 self-recorded takeoff- and landing taxi driving profiles. A custom ETS simulation model was developed and simulated across all available driving profiles to confirm the desired powertrain performance and to predict the system’s energy consumption. For the purpose of enhancing the validity of these energy consumption predictions, a suitable motor controller is then designed by the use of MATLAB Simulink. An easy-to-implement switch loss model was created to predict the ETS motor controller efficiency map. Finally, the former energy consumption predictions were revised for the implementation of the motor controller and an estimated traction motor efficiency map. The results exhibit that the revised ETS simulation model was capable of refining the energy consumption. It was found that the ETS will consume up to 9.89 kWh on average if the full potential of the traction motors energy recuperation capabilities are being used. The simulation outcomes further demonstrate that regenerative braking offers great potential in ETS applications since more than 14 % of required traction energy could be regenerated to yield the above mentioned average energy consumption.
Thesis
Master of Applied Science (MASc)
Advisors/Committee Members: Emadi, Ali, Mechanical Engineering.
Subjects/Keywords: Electric Taxiing; Green Taxiing; Green Taxi; Powertrain Design; Electric Taxiing System (ETS); System Sizing; More Electric Aircraft; Simulation; Model-Based Design; Aircraft Taxiing Drive Cycles; Kinematic Analysis; Requirements Analysis; Regenerative Braking; Power Electronics; Motor Controls; Inverter; Switch Loss Model; Efficiency Map
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APA (6th Edition):
Heinrich, M. T. E. (2015). On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/18085
Chicago Manual of Style (16th Edition):
Heinrich, Maximilian Theobald Ewald. “On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation.” 2015. Masters Thesis, McMaster University. Accessed January 22, 2021.
http://hdl.handle.net/11375/18085.
MLA Handbook (7th Edition):
Heinrich, Maximilian Theobald Ewald. “On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation.” 2015. Web. 22 Jan 2021.
Vancouver:
Heinrich MTE. On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation. [Internet] [Masters thesis]. McMaster University; 2015. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/11375/18085.
Council of Science Editors:
Heinrich MTE. On the Concept of Electric Taxiing for Midsize Commercial Aircraft: A Power System and Architecture Investigation. [Masters Thesis]. McMaster University; 2015. Available from: http://hdl.handle.net/11375/18085
University of Technology, Sydney
4.
Ruan, Jiageng.
Design and verification of novel powertrain management for multi-geared battery electric vehicles.
Degree: 2016, University of Technology, Sydney
URL: http://hdl.handle.net/10453/62365
► Despite the long-term benefit of battery electric vehicles (BEVs) to customers and the environment, the initial cost and limited driving range present the significant barriers…
(more)
▼ Despite the long-term benefit of battery electric vehicles (BEVs) to customers and the environment, the initial cost and limited driving range present the significant barriers for wide spread commercialization. The integration of multi-speed transmission to BEVs’ powertrain systems, which is in place of fixed ratio reduction transmission, is considered as a feasible method to improve powertrain efficiency and extend limited driving range for a fixed battery size. Additionally, regenerative braking also extends the mileage by recapturing the vehicle’s kinetic energy during braking, rather than dissipating it as heat. Both of these two methods reduce the requirement of battery pack capacity of BEVs without loss of performance. However, the motor-supplied braking torque is applied to the wheels in an entirely different way compared to the hydraulic friction braking systems. Drag torque and response delay may be introduced by transmitting the braking torque from the motor through a multi-speed transmission, axles and differential to the wheels. Furthermore, because the motor is usually only connected to one axle and the available torque is limited, the traditional friction brake is still necessary for supplementary braking, creating a blended braking system. Complicated effects such as wheel slip and locking, vehicle body bounce and braking distance variation, will inevitability impact on the performance and safety of braking. The aim of this thesis is to estimate if the multi-speed transmission and the mechanic-electric blended braking system are worthwhile for the customers, in terms of the price/performance relationship of others’ design solutions;
To do so a generic battery electric vehicle is modelled in Matlab/Simulink® to predict motor efficiency, braking performance of different strategies, energy consumption and recovery for single reduction, two-speed Dual Clutch Transmission (DCT) and simplified Continuous Variable Transmission (CVT) equipped BEVs. Braking strategies for different purposes are proposed to achieve a balance between braking performance, driving comfort and energy recovery rate. Special measures are taken to avoid any effects of motor failure. All strategies are analysed in detail for various braking events. Advanced driver assistance systems (ADAS), such as Anti-Lock Brake System (ABS) and Electro Control Brake Distribution (EBD), are properly integrated to work harmoniously with the regenerative braking system (RBS). Different switching plans during braking are discussed. The braking energy recovery rates and brake force distribution details for different driving cycles are simulated.
A credible conclusion is gained, through experimental validation of single speed and two-speed DCT scenarios and reasonable assumptions to support the CVT scenario, that both two-speed DCT and simplified CVT improve the overall powertrain efficiency, save battery energy and reduce customer costs, although each of the configurations has unique cost and energy consumption related trade-offs. Results for two of the…
Subjects/Keywords: Battery electric vehicles (BEVs).; BEVs’ powertrain systems.; Multi-speed transmission.; Regenerative braking system (RBS).; Drag torque and response delay.; Dual Clutch Transmission (DCT).; Continuous Variable Transmission (CVT).; Advanced driver assistance systems (ADAS).; Anti-Lock Brake System (ABS).; Electro Control Brake Distribution (EBD).
Record Details
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APA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ruan, J. (2016). Design and verification of novel powertrain management for multi-geared battery electric vehicles. (Thesis). University of Technology, Sydney. Retrieved from http://hdl.handle.net/10453/62365
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):
Ruan, Jiageng. “Design and verification of novel powertrain management for multi-geared battery electric vehicles.” 2016. Thesis, University of Technology, Sydney. Accessed January 22, 2021.
http://hdl.handle.net/10453/62365.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ruan, Jiageng. “Design and verification of novel powertrain management for multi-geared battery electric vehicles.” 2016. Web. 22 Jan 2021.
Vancouver:
Ruan J. Design and verification of novel powertrain management for multi-geared battery electric vehicles. [Internet] [Thesis]. University of Technology, Sydney; 2016. [cited 2021 Jan 22].
Available from: http://hdl.handle.net/10453/62365.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ruan J. Design and verification of novel powertrain management for multi-geared battery electric vehicles. [Thesis]. University of Technology, Sydney; 2016. Available from: http://hdl.handle.net/10453/62365
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
. 
Open Access Theses and Dissertations