【目的】为提升永磁同步电机(PMSM)模型预测电流控制(MPCC)的控制性能，在PMSM与逆变器之间增加LC滤波器。【方法】建立带LC滤波器的三阶多步MPCC系统，对逆变器电流、电容电压及电机电流进行预测控制，并与一阶多步MPCC和磁场定向控制(FOC)进行仿真对比。【结果】仿真结果表明：在相同开关频率和预测步数下，相较于一阶MPCC，三阶MPCC下PMSM的转矩脉动和电流脉动明显减小，电流总谐波失真(THD)更低；对于三阶MPCC，随着预测步数的增加，电流THD、电流脉动和转矩脉动逐步减小。【结论】随着预测步数的增加，三阶MPCC系统的控制性能逐步提升；三阶MPCC的控制性能优于一阶MPCC；在较高开关频率处，四步至五步的三阶MPCC的控制性能优于FOC。

[Objective] In order to improve the control performance of model predictive current control (MPCC) for permanent magnet synchronous motor (PMSM), an LC filter was added between the PMSM and the inverter. [Method] A third-order multi-step MPCC system with LC filter was established. Predictive control was applied to the inverter current, capacitor voltage, and motor current, with simulation comparisons made against a first-order multi-step MPCC and field orientation control (FOC). [Results] Comparison results showed that under the same switching frequency and number of prediction steps, the third-order MPCC significantly reduced torque ripple and current ripple in the PMSM compared to the first-order MPCC, while also achieving lower total harmonic distortion (THD) in the current. Additionally, as the number of prediction steps increased in the third-order MPCC, both current THD, current ripple, and torque ripple progressively decreased. [Conclusion] As the number of prediction steps increases, the control performance of the third-order MPCC system gradually improves. The third-order MPCC outperforms the first-order MPCC. At higher switching frequencies, the third-order MPCC with 4-5 prediction steps delivers better control performance than FOC.

长安大学2024年研究生科研创新实践项目(300103724044)