组合式永磁同步直线电机端部效应力研究  

Research on End Effect Force for Combined Type Permanent Magnet Linear Synchronous Motors

作　　者：郤能 杨家军[3] 汤双清 杜义贤 

机构地区：[1]三峡大学水电机械设备设计与维护湖北省重点实验室,湖北宜昌443002 [2]三峡大学机械与动力学院,湖北宜昌443002 [3]华中科技大学机械科学与工程学院,武汉430074

出　　处：《三峡大学学报（自然科学版）》2018年第1期75-79,85,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51775308,51175297);水电机械设备设计与维护湖北省重点实验室(三峡大学)开放基金(2017KJX08);三峡大学高层次人才科研启动基金(1910103)

摘　　要：为了改善永磁同步直线电机的推力波动特性,针对其结构特点,提出了组合式永磁同步直线电机这一新型结构并介绍了组合式永磁同步直线电机的结构特点;以平板式短初级长次级永磁同步直线电机为例,用傅立叶级数方法对传统永磁同步直线电机和组合式永磁同步直线电机的端部效应力进行了分析,获取了最小化端部效应力的铁芯长度选取方法;利用有限元方法对两种电机的端部效应力解析结果进行仿真验证,用两种电机的原型样机实验平台进行了静磁阻力实验.仿真和实验结果表明,组合式永磁同步直线电机有效减小了端部效应力和静磁阻力,使电机的推力波动特性得到明显的改善.In order to improve the thrust fluctuation characteristics of permanent magnet synchronous linear motors （PMLSMs）, a novel combined type permanent magnet synchronous linear motor is proposed in terms of its structure characters. The structure of the combined type PMLSM is introduced. Taking the plate short primary long secondary type PMLSMs for example, the end effect forces of traditional PMSLM and combined type PMLSM are analyzed using Fourier series method, respectively. The core length selection method under minimal end effect force is obtained. The analysis of the end effect force is verified by finite element method. The detent force is tested on the prototype experiment platform. The simulation and experimental results show that the combined type PMLSM can effectively reduce the end effect force and detent force, and obviously improve the thrust fluctuation characteristics.

关 键 词：永磁同步直线电机 组合式永磁同步直线电机 端部效应力 推力波动 

分 类 号：TM341[电气工程—电机]