基于电压空间矢量的电动汽车电驱动系统高效快转矩响应控制  

Fast Torque Response Control of High Efficiency Drives in Electric Vehicles Based on Voltage Space Vector

作　　者：崔纳新[1] 张承慧[1] 吕志强[1] 李珂[1] 

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《电工技术学报》2009年第3期61-66,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50477042);山东省优秀中青年科学家奖励基金(2007BS01012)资助项目

摘　　要：针对电动汽车异步电动机电驱动系统效率优化控制引起动态响应速度下降的问题,提出一种用于动态过程的快速转矩响应控制策略。该方法充分利用目前电动汽车电驱动系统中应用广泛的矢量控制方案中已有的转子磁链和电磁转矩信号,结合直接转矩控制思想,在动态过程中通过选择适当的电压空间矢量,提高转子磁链和转矩响应速度。该方案突破了转子磁场响应慢的制约,使动态过程中电动机的电磁转矩迅速增大。实验结果表明,系统动态响应性能得到明显改善,该高效快转矩响应控制策略具有调节时间短、动态响应快的优点。The efficiency improvement of the asynchronous motor drives for electric vehicles is at the cost of deterioration of the dynamic response. A new strategy of fast transient torque response is proposed in this paper, which improves the torque response in dynamic processes. Combining with the idea of direct torque control, the rotor flux and electric magnetic torque of vector control system using in electric vehicle drives are used to choose the appropriate voltage space vector. The electromagnetic torque increases quickly in transient state without the limit of slow response of rotor megnetic field. Experimental results show that the dynamic performance is improved significantly by the proposed method. It is an efficient solution to reduce the tuning time and speed up the dynamic response.

关 键 词：电动汽车 电压空间矢量 转矩响应 效率优化 

分 类 号：TM343[电气工程—电机]