基于Quasi-Z源间接矩阵变换器的永磁同步电机驱动系统

将Quasi-Z源间接矩阵变换器与永磁同步电机的矢量控制相结合,提出了一种新型的变频调速系统,克服了传统变频调速系统电压传输比低的限制,能够满足永磁同步电机在不同运行状态下的电压等级,扩展了电机的调速范围。同时在小信号模型的基础上,提出了Quasi-Z源间接矩阵变换器直流母线电压的闭环控制策略。仿真结果表明,可有效提高永磁同步电机的运行性能,抵抗电网电压跌落。

APMSM Drive System Based on the Quasi-Z Source Indirect Matrix Converter

Combining the Quasi-Z Source indirect matrix converter with PMSM vector control,this paper presents a novel variable frequency speed control system,which overcomes low voltage transfer ratio of traditional variable frequency speed control systems and can meet the requirement on PMSM voltage levels under different operating conditions,thus extending speed control scope of the motor.Furthermore,on the basis of the small signal model,this paper presents a closed-loop control strategy for the DC bus voltage of the Quasi-Z source indirect matrix converter.Simulation results show that the proposed system can improve the operating performance of PMSM and resist voltage sag on the power grid.