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Integrated Model of Power Electronics, Electric Motor, and Gearbox for a Light EV
Hofman, Isabelle,Sergeant, Peter,Van den Bossche, Alex,Koroglu, Selim,Kesler, Selami The Korean Institute of Power Electronics 2015 JOURNAL OF POWER ELECTRONICS Vol.15 No.6
This study presents a model of a drivetrain for an integrated design of a light electric vehicle (EV). For the drivetrain of each front wheel of the single-person, battery-powered EV tricycle consists of a battery, an inverter, and an outer rotor permanent magnet synchronous motor (PMSM), which is connected to an in-wheel gearbox. The efficiency of the inverter, motor, and gearbox is analyzed over the New European Driving Cycle. To calculate the losses and efficiency of the PMSM, the power electronics in the inverter and gearbox are used. The analytical models provide a fast, but less accurate result, useful for optimization purposes. To accurately predict the efficiency of the PMSM, a finite element model is used. The models are validated by test setups. Correspondingly, a good agreement between the measurements and the calculated results is achieved. A parameter study is performed to investigate the influence of the detailed component parameters (i.e., outer rotor radius, gear ratio, and number of pole pairs and stator slots) on the average efficiency of the drivetrain.
M. GEBREHIWOT,A. VAN DEN BOSSCHE 한국자동차공학회 2015 International journal of automotive technology Vol.16 No.4
It is convenient to use the generator of a range extender also for starting the engine. The torque needed by the engine at the early stage of engine cranking has been modeled. The sum of the torques developed by the starter/generator and the rotational inertia including the flywheel, have to be sufficiently large in order to overcome the compression torque so as to ensure a successful start of the engine. In order to minimize the torque required from the electric motor, the concept of flywheel effect can be used. This brings the possibility to downsize the converter. By reducing the torque demand from the motor, one can limit the current drawn from the source, thereby giving reliability to the switching devices.
Integrated Model of Power Electronics, Electric Motor, and Gearbox for a Light EV
Isabelle Hofman,Peter Sergeant,Alex Van den Bossche,Selim Koroglu,Selami Kesler 전력전자학회 2015 JOURNAL OF POWER ELECTRONICS Vol.15 No.6
This study presents a model of a drivetrain for an integrated design of a light electric vehicle (EV). For the drivetrain of each front wheel of the single-person, battery-powered EV tricycle consists of a battery, an inverter, and an outer rotor permanent magnet synchronous motor (PMSM), which is connected to an in-wheel gearbox. The efficiency of the inverter, motor, and gearbox is analyzed over the New European Driving Cycle. To calculate the losses and efficiency of the PMSM, the power electronics in the inverter and gearbox are used. The analytical models provide a fast, but less accurate result, useful for optimization purposes. To accurately predict the efficiency of the PMSM, a finite element model is used. The models are validated by test setups. Correspondingly, a good agreement between the measurements and the calculated results is achieved. A parameter study is performed to investigate the influence of the detailed component parameters (i.e., outer rotor radius, gear ratio, and number of pole pairs and stator slots) on the average efficiency of the drivetrain.
Electrically assisted bicycles
Ph. Lataire,J. M. Timmermans,G. Maggetto,P. Van den Bossche,J. Cappelle 한국과학기술원 인간친화 복지 로봇 시스템 연구센터 2007 International Journal of Assistive Robotics and Me Vol.8 No.1
This paper reports on work performed at the Vrije Universiteit Brussel on Electrically assisted bicycles, first in the scope of the European E-TOUR-project, next in subsequent work in the continuation of this project. Three aspects of electrically assisted bicycles have been considered: the bicycles have been evaluated for commuting use throughout the city; the bicycles have been evaluated on a test facility developed on purpose at the university; a group of test persons out of the “ageing population” has been tested on a physiological-medical basis for evaluation of the benefits that a renewed physical activity with electric bicycles can bring. This paper focuses on the technical evaluation of the bicycles and the Human Interface.