This article introduces a novel algorithm for suppression of phase current harmonics in three-phase sinusoidal surface-mounted permanent magnet synchronous machines (SPMSMs) caused by nonideal back EMF waveform and dead time effects. Proposed feedback acquisition chain obtains an exact information on all the relevant harmonics within each period of the fundamental. Design of the harmonic current controller based on the internal model control principle is given. The article outlines the relevant details of implementation and the results of verification performed by both computer simulations and experimentally, using a laboratory prototype machine. Experimental results, obtained in the presence of nonsinusoidal back-EMF and with erroneous dead time compensation, prove the ability of the proposed solution to remove the stator current harmonics quickly, in just two fundamental periods, and thus, eliminate torque ripple.

中文翻译：

---

近乎完全抑制 SPMSM 中由反电动势和死区时间引起的谐波电流


本文介绍了一种新颖的算法，用于抑制三相正弦表面安装永磁同步电机 (SPMSM) 中由非理想反电动势波形和死区时间效应引起的相电流谐波。所提出的反馈采集链获得基波每个周期内所有相关谐波的准确信息。给出了基于内模控制原理的谐波电流控制器的设计。本文概述了实施的相关细节以及使用实验室原型机通过计算机模拟和实验进行的验证结果。在存在非正弦反电动势和错误死区时间补偿的情况下获得的实验结果证明，所提出的解决方案能够在两个基本周期内快速消除定子电流谐波，从而消除扭矩脉动。