Journal of Jilin University(Engineering and Technology Edition) ›› 2018, Vol. 48 ›› Issue (6): 1629-1635.doi: 10.13229/j.cnki.jdxbgxb20170420

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Minimizing inverter capacity of doubly-fed machine driving electric vehicles

CHANG Cheng1,2(),SONG Chuan-xue1(),ZHANG Ya-ge1,SHAO Yu-long1,ZHOU Fang1   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    2. Department of Automotive Engineering,Henan Institute of Technology,Xinxiang 453003,China
  • Received:2017-04-26 Online:2018-11-20 Published:2018-12-11

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Abstract:

This paper introduces the basic principle of the vehicle-mounted doubly-fed machine, and analyzes the energy flow direction of the machine in different operating states. In order to reduce the number of distributed drive electric vehicle inverters, a new distribution pattern is proposed that the stators share the same inverter, which simplifies the structure of drive system effectively. The mathematical model of the doubly-fed machine is established, then by analyzing the influence factors of the active power and the reactive power of the rotor side and the stator side, the control strategy, which minimizes the total capacity of the inverter, is put forward. Matlab/Simulink is applied to establish the driving system model, and the validity of the proposed control strategy is verified, so as to reduce the production cost and the occupation space.

Key words: vehicle engineering, distributed drive electric vehicle, doubly-fed machine, inverter capacity

CLC Number: 

  • U469.72

Fig.1

Speed control system of automotive doubly-fed motor"

Fig.2

Schematic diagram of inverter configuration scheme"

Fig.3

Control schematic diagram of automotive doubly-fed motor"

Fig.4

Simulation results of speed regulation with stator constant frequency starting"

Fig.5

Power curves of stator with variable frequency starting"

Fig.6

Relationship between stator field current and different kinds of power"

Fig.7

Relationship between stator field current and inverter total capacity"

Fig.8

Relationship between slip ratio and different kinds of power"

Fig.9

Relationship between slip ratio and inverter total capacity"

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