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Mathematical Problems in Engineering
Volume 2015, Article ID 875843, 9 pages
Research Article

Vector Control Algorithm for Electric Vehicle AC Induction Motor Based on Improved Variable Gain PID Controller

1School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 610023, China
2School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610023, China

Received 3 December 2014; Revised 28 December 2014; Accepted 28 December 2014

Academic Editor: Hui Zhang

Copyright © 2015 Gang Qin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The acceleration performance of EV, which affects a lot of performances of EV such as start-up, overtaking, driving safety, and ride comfort, has become increasingly popular in recent researches. An improved variable gain PID control algorithm to improve the acceleration performance is proposed in this paper. The results of simulation with Matlab/Simulink demonstrate the effectiveness of the proposed algorithm through the control performance of motor velocity, motor torque, and three-phase current of motor. Moreover, it is investigated that the proposed controller is valid by comparison with the other PID controllers. Furthermore, the AC induction motor experiment set is constructed to verify the effect of proposed controller.