电动汽车驱动控制策略研究综述

驱动系统是电动汽车研制的关键技术之一,它直接决定电动汽车的性能。矢量控制通过坐标变换将定子电流矢量分解为转子磁场定向的两个直流分量并分别加以控制,从而实现异步电动机磁通和转矩的解耦控制,达到直流电动机的控制效果。直接转矩控制,并不需要观测转子磁链,它基于定子磁场控制磁场定向以转距作为被控量,思路清晰,手段直接。本文根据电动机矢量控制及直接转矩控制理论,结合电动汽车的实际要求,对其的现状及优缺点进行了分析及说明,介绍了改进的控制措施及发展趋势。

Summary of electric vehicle drive control strategy

Drive system is one of the key technologies for electric vehicles developed, which directly determines the performance of electric vehicles. Vector control through the stator current vector into the rotor field oriented coordinate transformation both DC and controlled separately, in order to achieve decoupling control asynchronous motor flux and torque, to control the effect of DC motor. Direct Torque Control, does not require the rotor flux observation, which is based on the stator magnetic field oriented control to turn away as the amount charged, clear thinking, means straightforward. According to motor vector control and direct torque control theory, combined with the actual requirements of electric vehicles, their current situation and explain the advantages and disadvantages are analyzed and introduced improved control measures and trends