吉林大学学报(工学版) ›› 2001, Vol. ›› Issue (3): 61-65.

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A High Frequency AC Power Drive System for Electric Vehicles

MA Xian-min, CHEN Quan-shi   

  1. Dept of Automotive Engineering, Tsinghua University, Beijing 100084, China
  • Received:2000-11-07 Online:2001-07-25

Abstract: A high frequency AC power drive system for induction motor is introduced in order to improve the performance of electric vehicle(EV) drive system.The suggested system consists of high frequency(HF) resonant inverter,HF transformer and HFAC pulse density modulation (PDM) converter.The inverter changes battery DC voltage into AC signal with 20 kHz,which is distributed as power sources for different equipment in EV by the transformer.Using zero voltage switching the PDM converter allows low distortion synthesis of single AC for induction motor drive system.From the theoretical analysis and simulation results,the proposed configuration permits flexibility in the choice of voltage levels in the EV,freedom from acoustic noise,and possesses high efficiency,faster system response,less penalty to bulky components and higher energy density.

Key words: electric vehicle, high frequency AC, pulse density modulation, resonant

CLC Number: 

  • TM921
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