基于复合磁性槽楔的PMLSM推力波动抑制  

Thrust ripple suppression of PMLSM basedon composite magnetic slot wedge

作　　者：许孝卓[1] 尚泽健 杜宝玉[2] 封海潮[1] 刘株利 Xu Xiaozhuo;Shang Zejian;Du Baoyu;Feng Haichao;Liu Zhuli(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China;China Tower Corporation Pingdingshan Branch,Pingdingshan 467000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,焦作454000 [2]河南理工大学机械与动力工程学院,焦作454000 [3]中国铁塔股份有限公司平顶山市分公司,平顶山467000

出　　处：《电子测量与仪器学报》2021年第12期79-86,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(52177039);河南省科技攻关项目(222102220016,202102210099,212102210145)资助。

摘　　要：永磁直线同步电机(permanent magnet linear synchronous motor,PMLSM)存在齿槽力,影响电机的控制性能。本文提出一种基于软磁、硬磁材料混搭的新型复合磁性槽楔结构(composite magnetic slot wedge,CMSW),能有效抑制PMLSM推力波动。首先,分析了单一磁性槽楔的材料、尺寸和空间位置分布对PMLSM输出推力和推力波动的变化规律。然后,研究新型复合磁性槽楔的软磁、硬磁材料配比和位置分布,对电机输出推力、推力波动和齿槽力等电磁性能的影响。以最大推力和推力波动最小为优化目标,利用正交优化法对复合磁性槽楔的尺寸进行优化。研究表明,采用新型复合磁性槽楔可有效降低推力波动和损耗,推力波动降低79.4%,而平均推力基本不变,为PMLSM推力波动抑制提供新的技术途径。The cogging force of permanent magnet linear synchronous motor(PMLSM)affects the control performance of the motor.In this paper,a novel composite magnetic slot wedge(CMSW)based on soft magnetic and hard magnetic materials is proposed to effectively suppress the thrust fluctuation of PMLSM.Firstly,the influence of material,size and spatial position distribution of magnetic slot wedge on the output thrust and thrust fluctuation of PMLSM is analyzed.the effects of the material proportion and position distribution of soft and hard magnetic materials on the electromagnetic properties of output thrust,thrust fluctuation and cogging force are studied.Taking maximum thrust and minimum thrust fluctuation as optimization objective,the size of composite magnetic slot wedge was optimized by orthogonal optimization method.It is shown that the new composite magnetic slot wedge can effectively reduce loss and thrust fluctuations by 79.4%,while the average thrust is basically unchanged,which provides a new technology way for thrust ripple suppression of PMLSM.

关 键 词：永磁直线同步电机 复合磁性槽楔 推力波动抑制 正交优化 

分 类 号：TM359.4[电气工程—电机] TM303.3