一种降低永磁辅助磁阻电机转矩脉动的三区间PWM-DITC控制策略  

A Torque Ripple Suppression Strategy for the Three Regions PWM-DITC Permanent Magnet Assisted Reluctance Motor

作　　者：龚成懿 徐俊鑫 黄朝志 肖任全 孙燕文 GONG Chengyi;XU Junxin;HUANG Chaozhi;XIAO Renquan;SUN Yanwen(School of Electrical Engineering and Automation,Jiangxi University of Science and Technology,Ganzhou 341000)

机构地区：[1]江西理工大学电气工程与自动化学院,赣州341000

出　　处：《电气工程学报》2025年第1期78-87,共10页Journal of Electrical Engineering

基　　金：国家自然科学基金(52167005);江西省自然科学基金(20232BAB204063)资助项目。

摘　　要：针对永磁辅助式磁阻电机转矩脉动较大的问题,提出一种分区间固定频率的抑制转矩脉动控制方法。首先,依据磁阻电机的电感特性,将两相交换区细分为两个区间,与单相导通区共同构成一个转子极距上的三个区间。其次,采用三角载波固定采样频率,结合各区间转矩的输出特性分别实施不同的控制策略,降低两相交换区的转矩脉动和峰值电流。最后,通过一台6/20永磁辅助外转子电机对三区间PWM-DITC方法进行仿真与试验验证。结果表明,相比传统DITC控制策略,所提方法能有效降低永磁辅助式磁阻电机两相交换区的转矩脉动并降低峰值电流。Aiming at the problem of large torque ripple of permanent magnet assisted reluctance motor,a control method of suppressing torque ripple with fixed frequency between partitions is proposed.Firstly,according to the inductance characteristics of the reluctance motor,the two-phase exchange area is subdivided into two regions,which together with the single-phase conduction area constitute three regions on the pole distance of a rotor.Secondly,the triangular carrier fixed sampling frequency is used to reduce the torque pulsation and peak current in the two-phase switching region with different control strategies combined with the output characteristics of each region.Finally,a 6/20 permanent magnet assisted external rotor motor is used to simulate and verify the three regions PWM-DITC method.The results show that compared with the traditional DITC control strategy,the proposed method can effectively reduce the torque ripple and the peak current in the two-phase exchange region of the permanent magnet assisted reluctance motor.

关 键 词：永磁辅助式磁阻电机 三区间 PWM-DITC 转矩脉动 峰值电流 

分 类 号：TM352[电气工程—电机]