表贴式永磁同步电机伺服系统电流环设计  

Current Regulator Design for Surface Permanent Magnet Synchronous Motor Servo Systems

作　　者：王恩德[1] 黄声华[1] 

机构地区：[1]强电磁工程新技术国家重点实验室(华中科技大学),湖北省武汉市430074

出　　处：《中国电机工程学报》2012年第33期82-88,179,共7页Proceedings of the CSEE

摘　　要：电流环直接影响表贴式永磁同步电机(surfacepermanent magnet synchronous motor,SPMSM)伺服系统的电流波形和电磁转矩,使系统的动、静态性能变差。当系统运行工况变化使得电机电感饱和时,电流环中含有电感参数的解耦项就会失效。从合成矢量的角度出发,提出了一种同步dq旋转坐标系下无需电感参数的电流解耦调节器,实现了无电感参数解耦控制,改善了SPMSM系统的动态性能。另外,由于死区、电机制造工艺、磁场饱和等原因,电机电流中含有影响系统性能的5、7、11、13等低次谐波。提出了同步旋转dq坐标系下比例积分+比例谐振(proportionalintegral+proportional resonance,PI+PR)的电流复合调节器,对低次电流谐波进行闭环调节,从而显著减小了谐波电流,改善了系统性能。仿真分析和实验结果均验证了该方案的可行性。The current control loop directly affects the current of the surface permanent magnet synchronous motor（SPMSM） and the electromagnetic torque,which makes the static and dynamic performance of the motor deteriorate.The decoupling control cannot be realized with the changes of the motor＇s inductance parameters due to saturation effects when the operating condition changes.This paper proposed a decoupling control to improve the dynamic performance,without the inductance value with the perspective of complex vector.As the dead zone,the motor manufacturing process and the magnetic saturation,the servo system current often contains low-order harmonics,such as 5th,7th,11th,13th,which produce torque ripple and affect the motor＇s performance.The current regulation with the proportional Integral and proportional resonance based on the synchronous rotating dq coordinate was used for the closed loop control of the low harmonic currents,to improve the system performance.Simulation and experimental results verify the feasibility of the schemes proposed by this paper.

关 键 词：表贴式永磁同步电机 同步旋转dq坐标系 合成矢量 解耦控制 比例谐振 

分 类 号：TM351[电气工程—电机]