内置式永磁同步电机弱磁过渡时的解耦补偿控制  

Decoupling and compensation strategy for interior PMSM in transitional region of flux-weakening

作　　者：毛亮亮[1] 梁悦[2] 王旭东[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《电机与控制学报》2015年第7期14-20,共7页Electric Machines and Control

基　　金：黑龙江省应用技术研究与开发计划项目(GB13A202)

摘　　要：针对内置式永磁同步电机(interior permanent magnet,IPM)在弱磁过渡时电流调节器瞬态饱和导致转速范围受限甚至失控的问题,提出了基于解耦电流控制和电压指令补偿的电流矢量控制算法,解除了电机高速运行时d-q轴电流交叉耦合的影响,使得控制规律趋于线性化,避免PI调节器输出不正常;当调节器饱和时,通过补偿电压指令使调节器迅速退出饱和状态,消除了转速调节失控现象。给出了判断电流调节器是否进入饱和的监视方法,实时决定是否有必要采取退饱和的措施,使得控制更具智能特点。在仿真结果的正确性基础上,通过台架测试进一步证实了所提出控制策略的有效性,提高了系统的稳定性并拓宽了电机的转速范围。For interior permanent magnet（ IPM） synchronous motor,the transient saturation of current regulator during flux weakening transition results in the speed range limitation or losing control. In order to solve the problems,a current vector control algorithm based on the current decoupling control and voltage command compensation was proposed,the cross- coupling effect of motor d- q axis currents was eliminated when running at high speed,making control law linearizable and abnormal PI regulator output was avoided; when regulator is saturated,by compensating voltage command,the regulators are out of saturation quickly,the speed control runaway was eliminated. The monitoring method was analyzed to judge if the current regulator is into saturation in real time to decide whether it is necessary to take measures to desaturate,making control be featured by intelligence. On the basis of correctness of simulation results,by bench testing the effectiveness of the proposed control strategy is confirmed,the stability of the system is improved and the range of motor speed is broadened.

关 键 词：永磁同步电机 弱磁过渡 解耦控制 电压指令补偿 电流调节器饱和 

分 类 号：TM351[电气工程—电机]