Дисертації з теми "Regenerative brake"
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Nieman, Joshua E. "A Novel, Elastically-Based, Regenerative Brake and Launch Assist Mechanism." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1399048279.
Повний текст джерелаSjöholm, Mikael. "Benefits of regenerative braking and eco driving for high-speed trains : Energy consumption and brake wear." Thesis, KTH, Spårfordon, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31701.
Повний текст джерелаLee, Cho-Yu. "Computational and experimental study of air hybrid engine concepts." Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/9205.
Повний текст джерелаMidgley, William John Baudinet. "Regenerative braking of urban delivery heavy goods vehicles." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607710.
Повний текст джерелаSamba, Murthy Aravind. "Analysis of regenerative braking in electric machines." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47660.
Повний текст джерелаSarip, S. Bin. "Lightweight friction brakes for a road vehicle with regenerative braking : design analysis and experimental investigation of the potential for mass reduction of friction brakes on a passenger car with regenerative braking." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5486.
Повний текст джерелаSantos, Aliandro Henrique Costa. "Uma contribuição ao estudo dos freio de atrito para aplicação em frenagem regenerativa." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264080.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: A tendência nas grandes metrópoles é de substituir a frota de veículos à combustão por veículos elétricos e híbridos. Estes veículos, em geral, usam banco de baterias como fonte de energia de mobilidade, preservando o meio ambiente, além de armazenar a energia gerada pelo motor durante as frenagens regenerativas, economizando energia. Tais sistemas de frenagens são auxiliados por módulos de ultracapacitores, que absorvem os picos de potência, preservando a vida útil das baterias. Com o avanço mundial no setor automobilístico, novas tecnologias têm surgido e com isto, a solicitação do sistema por atrito durante as frenagens tem sido preservada ou ampliada. O esforço de frenagem em veículos elétricos e híbridos é compartilhado entre os sistemas por atrito e regenerativo. Este trabalho teve como objetivo avaliar a possibilidade de utilização de diferentes materiais de atrito de pastilhas de freio comerciais para aplicações com frenagem regenerativa em veículos elétricos ou híbridos. Para a realização dos experimentos foi utilizado um dinamômetro especialmente desenvolvido, instalado no Departamento de Projeto Mecânico da FEM - Unicamp. Um planejamento experimental fatorial fracionário permitiu o estudo da influência de variáveis envolvidas na avaliação do comportamento do coeficiente de atrito, que são a porcentagem de frenagem mecânica e elétrica, a desaceleração, a velocidade e a temperatura. Os resultados experimentais mostram que o procedimento proposto pode ser utilizado para identificar a pastilha mais adequada, ou seja, a que apresenta a menor variação do coeficiente de atrito
Abstract: The tendency in large cities is to replace the fleet of engine operated vehicles by electric and hybrid vehicles. These vehicles generally use a bank of batteries as the mobility energy source, preserving the environment and storing the energy generated by the motor during the regenerative braking, saving energy. Such braking systems are aided for modules of ultracapacitors, which absorb the peaks of power, preserving the life of batteries. With the world advances in automobile engineering, new technologies have emerged and with this, the request of the system by friction during the braking has been preserved or even increased. Brake efforts of electric and hybrid vehicles are shared between the friction and regenerative systems. This work aimed to evaluate the possibility of using different materials of friction for commercial brake pads applied with regenerative braking systems of electric and hybrid vehicles. The experiments were performed using a specially developed dynamometer installed in the Department of Mechanical Design - FEM at University of Campinas, Brazil. A fractional factorial design was used to take the factor of influences in account. They are identified and the main factors are: percentage of electrical and mechanical braking, deceleration, sliding speed and temperature. The experimental results show that the procedure can be used to identify the more suitable material, which presents the smallest variation of friction coefficient
Doutorado
Mecanica dos Sólidos e Projeto Mecanico
Doutor em Engenharia Mecânica
LI, Zhen. "Analysis of dropbox assisted hydraulic traction." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209486.
Повний текст джерелаDen presenterade forskningen studerade fördelar och nackdelar med ett hydraulisk hjälpsystem för fordonsdrift (HAD) för en 25 meter lång timmerlastbil. Syftet var att undersöka hur drivlinans prestanda med avseende på energy, ekonomi och miljöpåverkan, påverkas av de adderade komponenterna, de hydrauliska ackumulatorerna. Hjälpsystemet är helt enkelt ett hydrostatiskt transmissionssystem. Idealt, kan bränsleförbrukning och kostnad reduceras genom att använda ackumulatorer i systemet. För att verifiera denna hypotes, har modell-baserade simuleringar utförts och resultaten har analyserats för konstantfartskörning och en körcykel med upprepade accelerationer och inbromsningar. Dessutom, har ett HAD-system med och utan ackumulator jämförts. Simuleringsresultaten visar att ett system med ackumulatorer förbrukar ca 14% mindre bränsle än ett system utan ackumulatorer. Ett ackumulatorstött system ger också 15% högre framdrivningseffekt vid accelereration. I avhandlingen dimensionera också storleken på ackumulatorerna, både teoretiskt och med simuleringar. Det finns en liten skillnad mellan resultaten från den teoretiska beräkningen och simuleringarna, som kan bero på att volymetriska förlusterna inte har tagits med i simuleringarna. En ackumulator med en storlek på 57 L visar sig ha den mest effektiva storleken för den studerade körcykeln. Vid högre körhastigheter, kommer verkningsgraden att minska till viss del. Inga fysiska tester har gjorts, men de kommer att utföras i framtiden.
Rudolf, Ladislav. "Použití bezkartáčového stejnosměrného motoru pro pohon lineárního servopohonu s bezpečnostní funkcí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219451.
Повний текст джерелаHung, Hao-Che, and 洪浩哲. "Active Control of Regenerative Brake for Electric Vehicles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/g26xbe.
Повний текст джерела國立中興大學
電機工程學系所
106
Looking at the global energy trends and the government policies in Taiwan, electric vehicles are expected to replace gasoline vehicles in the near future. Although electric vehicle technology has been perfect and widespread in recent years, most of the braking systems still use mechanical discs or drum brakes. In addition, the current driving system and the braking system are two independent modules. In this thesis, an integrated driving and braking control system are designed for electric vehicle with active regenerative braking control system. For example when there is no driving current entering the motor stator, and the motor is remaining inertial rotation. The motor becomes a generator with current generated in the opposite direction relative driving current. By using this feature, the back electromagnetic field (EMF) controlled by the pulse-width modulation (PWM) technique to charging a capacitor. The capacitor as an extra energy source is cascaded with the battery as a charge pump. This is used to present excessive braking torque to stop the rotating motor in an efficient way. This thesis proposes that the back EMF can regenerate the charging capacity combined with the reverse magnetic field braking method. We integrated the controller of driving system and braking system. Extensive experimental was conducted to verify the proposed design. Comparing with the resistance brake and capacitive brake, the active regenerative control system is most efficient.
Yan, Sheng-Jia, and 顏聖家. "Design and Implementation of Variable Winding Motor Driver with Regenerative-Brake." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/qnr96v.
Повний текст джерела國立臺北科技大學
車輛工程系所
102
This study proposes a novel method of the electric brake with energy-regeneration for the brushless DC motor (BLDCM) of the electric scooter (E-Scooter). The proposed method could convert the kinetic energy into the electric one to recover the battery during the braking period. Thus, the driving range of the electric scooter can be increased by the method of the energy-regeneration; furthermore, the safety and comfort of the driver could be improved by the electric brake. The proposed method could change the switching signals of motor driver to control the inverse torque during the braking period. Compared with the presented methods, the proposed solution achieves the goal of the energy-regeneration without additional converter or changing windings of the motor stator. In addition to the braking period, the period of release throttle is included in the energy-regeneration mechanism such that the electric scooter has a similar function of the engine brake for the driving safety. Furthermore, the battery may be injured by the surge regeneration current in the high speed duration. Therefore, the proposed strategy could control the current to protect the battery and provides a smooth and reliable brake. The system drives electric vehicles of the variable winding motor, while analyses the wye connected status and delta connected state.
Yang, Hsin-yi, and 楊信億. "Design of Regenerative Brake System for AC Servo Driver Based on Fuzzy Algorithm." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/62097920810714017821.
Повний текст джерела國立成功大學
電機工程學系專班
97
This paper presents the design of regenerative brake system for AC Servo Driver based on Fuzzy algorithm. The main drawback of traditional application is that a brake system built in an AC servo driver is triggered under a fixed detection level of PN-BUS voltage, which causes malfunction occasionally, and therefore burns out the internal brake resistor. In order to reduce the probability of malfunction of braking controller and improve the accuracy of the regenerative braking system, the fuzzy algorithm is considered a solution in this paper. The experimental results show that fuzzy algorithm-based application proposed in this paper not only can achieve a significant variable duty detection level on PN-BUS voltage, but also works in a firmware-based operation to avoid from resistors burnout.
Chang, Hong-Wei, and 張宏瑋. "Design and Implementation of Motor Controller of Electric Vehicle with Intelligent Energy Management of Regenerative-Brake." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/z6dmvt.
Повний текст джерела國立臺北科技大學
車輛工程系所
99
This thesis studies a brushless DC motor controller with regenerative-brake of intelligent energy management for electric vehicle (EV). Under the considerations of the battery protection, smooth braking torque and driving safety, the controller will convert the kinetic energy into the electric one to recover the battery, when the driver inputs the braking command by pressing the braking holder on the electric vehicle. The proposed method with intelligent management only changes the switching sequence of the inverter to control the inverse torque and fill the driver’s need for safe brake, besides, the braking energy will return to the battery. The proposed solution could achieve the goal of the regenerative-brake which is not only need not to change the circuit of the inverter or the structure of the complex winding-changeover but also need not add converter or ultracapacitor. About the management strategy of the regenerative-brake energy, this thesis adopts fuzzy control algorithm to implement it. Compared with the presented methods, the proposed control strategy could obtain more regenerative current to achieve the increase of the energy efficiency in addition to the basic goals of the electric brake and the energy regeneration. Finally, the feasibility of the proposed method is demonstrated by experimental results. It shows that the driving range of the EV could be increased to about 31%.
Sarip, S. Bin, Andrew J. Day, Peter Olley, and Hong Sheng Qi. "Analysis of the transient thermomechanical behaviour of a lightweight brake disc for a regenerative braking system." 2013. http://hdl.handle.net/10454/9721.
Повний текст джерелаRegenerative braking would extend the working range of an EV or HV provided that any extra energy consumption from increased vehicle mass and system losses did not outweigh the saving from energy recuperation, also reduce duty levels on the brakes themselves, giving advantages including extended brake rotor and friction material life, but more importantly reduced brake mass, minimise brake pad wear. The objective of this research is to define thermal performance on lightweight disc brake models. Thermal performance was a key factor which was studied using the 3D model in FEA simulations. Ultimately a design method for lightweight brakes suitable for use on any car-sized hybrid vehicle was used from previous analysis. The design requirement, including reducing the thickness, would affect the temperature distribution and increase stress at the critical area. Based on the relationship obtained between rotor weight, thickness, undercut effect and offset between hat and friction ring, criteria have been established for designing lightweight brake discs in a vehicle with regenerative braking.
DeMers, Steven Michael. "Mechanical and Regenerative Braking Integration for a Hybrid Electric Vehicle." Thesis, 2008. http://hdl.handle.net/10012/3908.
Повний текст джерелаYi-ShouChen and 陳怡碩. "Study of Regenerative Brake and Current Control of BLDC Motors for Electric Vehicle Using Fuzzy Neural Network." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/12908363052869820087.
Повний текст джерела國立成功大學
工程科學系碩博士班
98
Recently, since people changing their live style in many aspects, the living standard is as higher as possible and the gasoline is greatly consumed. According to statistic from BP Statistical Review, the index of reserved gasoline can only provide about 36~43 years. By the reason, human must develop new energy source which is sustainable and less environmental pollution in following decade. At this time, many researches are working on decreasing the gasoline-consuming efficiently to energy-saving. Since vehicles consumed numerously gasoline, improve these vehicles to energy-saving is important. Electric vehicle (EV) replaced internal combustion engine (ICE) by electric motors is more popular in the world. However, EVs are hard to popularize since the sustainability is lower than it with internal combustion engine. This defect is unacceptable for user to buy or use EVs widely. Therefore, increase the sustainability of EV is a novel research topic. In generally, the conventional brake applies the friction to decrease the vehicle’s speed, and translate the kinetic energy to heat. The energy is just consumed. In order to recycle the kinetic energy in braking process, regenerative brake method is presented. Regenerative brake translates the kinetic energy to electric energy by utilizing the motor’s back-EMF and internal winding. The method controls the switch sequences of MOSFETs to elevate the back-EMF voltage and recharge the battery. In the meanwhile, the motors operate in braking mode, and produce an inverse torque to reduce the motor’s speed. Depend on the regenerative brake method, the motors drive can accomplish brake function and extending traveling distance without adding any component. “Extending the traveling distance” and “Control the regenerative current” are the topics of this thesis. Since the brake torque is depended on the recharge current, a current control in EVs with self-tuning fuzzy neural network algorithm is proposed. The gradient descent and back-propagation are used to adjust the parameters of fuzzy neural network, and minimize the current error. Finally, Lyapunov’s stability theorem is applied to prove the system stability. Finally, the microprocessors dsPIC30f2010 by Microchip, are employed to implement the proposed control algorithms. The driving and braking mode are tested on a motive machine and inertial instrument. Moreover, the implemental results of the proposed system set up on EVs demonstrate the ability of recharge and the feasibility of regenerative brake.
Miller, John William. "Design of a single axle regenerative brake system for a 2005 thru-the-road hybrid electric Chevrolet equinox." 2006. http://etd.utk.edu/2006/MillerJohn.pdf.
Повний текст джерела