基于无功功率观测器的永磁同步电机矢量控制

摘要

Vector control of permanent magnet synchronous motor (PMSM) based on reactive power observer (RPO) was analysed.Different from the traditional vector control of id =0,it was unnecessary for parameters to be converted to rotor side in this algorithm,and it was accomplished on stator side only.By observing the inductance energy of stator winding,the phases of back electric motive force (EMF) and current could be synchronous,and the efficiency of control was ensured.Because the algorithm was very simple,this method was suitable for some product fields with the higher requirement of cost,and it was practical.%分析了基于无功功率观测器的永磁同步电机矢量控制方法.与传统的id=0矢量控制算法不同,该算法无需将参变量折算到转子侧,仅在定子侧就可以完成.通过观测定子绕组内部所储存的电感能量,实现相反电势和相电流同相位的控制,保证了控制的效率.由于该算法非常简单,特别适合于对成本要求较高的产品领域,具有很强的实用性.