摘要
针对广泛应用于电动汽车驱动系统中的异步电机,根据电动汽车自身特性及行驶特点,结合效率优化控制和转差频率控制理论,提出双模式控制策略。轻载时采用弱磁控制模式;爬坡或加速时励磁水平快速恢复到额定值并保持恒定。在此基础上,设计了一种工程实现算法并进行了大量实验。实验结果验证了所提方法的有效性和实用性,同时两种控制模式能实现快速平滑过渡。
Dual-mode control strategies are proposed aiming at asynchronous motors widely used in driving system of electric vehicles, according to requirements for features of electric vehicles and driving features, and with the combi- nation of electric efficiency＇s optimal control and slip frequency theory.At the time of light load,field weakening control mode is adopted.At the time of climbing or acceleration, excitation level can return to rated value quickly and maintain constancy.A kind of engineering realization algorithm is designed and a large number of experiments are conducted by programming.Experimental results verify effectiveness and practicability of the mentioned method.Two kinds of control modes also can realize rapid and smooth transition.
出处
《电力电子技术》
CSCD
北大核心
2013年第9期72-74,共3页
Power Electronics
基金
中央高校基本科研业务费资助(CDJXS11150011)~~
关键词
电动汽车
异步电机
效率优化
转差频率
electric vehicles
asynchronous motor
efficiency optimization
slip frequency
