摘要
针对永磁同步轮毂驱动电机因5、7次谐波永磁磁链导致的6倍转矩脉动问题,提出了一种谐波电流注入抑制方法。通过理论推导,求解了可消除6倍频转矩脉动的谐波电流解析表达式。为解决大转矩工况下谐波电流幅值微弱导致检测精度不足问题,采用了一种基于基波重构的预处理方法,通过滤除采样电流中的基波分量来提升谐波提取精度。通过矢量控制模型对一台减速轮毂驱动电机进行仿真,验证结果表明,该方法在恒转矩工况下可使6倍频转矩脉动幅值降低约50%。
This proposes a harmonic current injection method to suppress the 6th-order torque ripple in permanent magnet synchronous in-wheel drive motors caused by 5th and 7th harmonic flux linkages.A torque analytical model incorporating harmonic flux components was derived to determine the harmonic current parameters that nullify the 6th-order torque pulsation.To address the challenge of weak harmonic current amplitudes under high-torque conditions,a preprocessing strategy was employed by reconstructing and subtracting the fundamental current from sampled phase currents,thereby enhancing harmonic extraction accuracy.A closed-loop control architecture integrating multi-stage rotating reference frame transformations was implemented for precise harmonic injection.Simulation on a 16-pole 24-slot in-wheel drive motor demonstrated that the proposed method reduced the 6th-order torque ripple amplitude by approximately 50%.
作者
黄超
熊璐
官岑旭
龚宇
郭晗
HUANG Chao;XIONG Lu;GUAN Cenxu;GONG Yu;GUO Han(School of Automotive Studies,Tongji University,Shanghai 201804,China;Schaeffler Trading(Shanghai)Co.,Ltd.,Shanghai 201804,China)
出处
《微特电机》
2025年第5期8-12,共5页
Small & Special Electrical Machines
关键词
轮毂驱动电机
永磁同步电机
谐波电流注入
转矩脉动
in-wheel drive motor
permanent magnet synchronous motor
harmonic current injection
torque ripple
