Permanent magnet synchronous motor always suffers from air gap field distortion and inverter nonlinearity, which lead to the harmonic components in motor currents. A resonant controller is a remarkable control method to eliminate periodic disturbance, whereas the conventional resonant controller is limited by narrow bandwidth and phase lag. This article presents a novel resonant controller with a precise phase compensation method for a permanent magnet synchronous motor to suppress the current harmonics. Based on the analysis of the current harmonic characteristics, the proposed resonant controller for rejecting a set of selected current harmonic components is plugged in the current loop, and it is parallel to the traditional proportional–integral controller. Furthermore, the stability analysis of the proposed resonant controller is investigated, and the parameters are tuned to get a satisfactory performance. Compared with the conventional resonant controller, the proposed resonant controller can achieve good steady-state performance, dynamic performance, and frequency adaptivity performance, simultaneously. Finally, the experimental results demonstrate the effectiveness of the proposed suppression scheme.

永磁同步电动机始终遭受气隙磁场畸变和逆变器非线性的困扰，这会导致电动机电流中的谐波分量。谐振控制器是消除周期性干扰的出色控制方法，而常规谐振控制器受窄带宽和相位滞后的限制。本文提出了一种新颖的谐振控制器，该控制器具有精确的相位补偿方法，用于永磁同步电动机以抑制电流谐波。在对电流谐波特性进行分析的基础上，将建议的用于拒绝一组选定的电流谐波分量的谐振控制器插入电流环路，该控制器与传统的比例积分控制器平行。此外，研究了所提出的谐振控制器的稳定性，并调整参数以获得令人满意的性能。与传统的谐振控制器相比，所提出的谐振控制器可以同时获得良好的稳态性能，动态性能和频率自适应性能。最后，实验结果证明了所提出的抑制方案的有效性。