内置式永磁同步电机电磁退磁性能研究  

Study on Electromagnetic Demagnetization Performance of Rare Earth Interior Permanent Magnet Synchronous Motors

作　　者：王宗亮[1] 蔡巍[1] WANG Zhongliang;CAI Wei(Navy Submarine Academy,Qingdao Shandong 266199,China)

机构地区：[1]海军潜艇学院,山东青岛266199

出　　处：《微电机》2020年第3期15-19,共5页Micromotors

摘　　要：本文针对内置式永磁同步电机中永磁体在高温环境下工作易发生不可逆退磁的问题,以一台峰值功率70kW内置式永磁同步电机为例,首先从永磁体退磁机理入手,分析永磁体发生不可逆退磁的电磁机理,继而建立电机的2D有限元仿真模型,计算并分析了不同d、q轴退磁电流、工作温度对永磁体退磁性能的影响,进而提出提高内置式永磁同步电机抗退磁能力的方法。最后,试制样机,进行退磁实验,对比实验前后反电势波形,验证了电机的抗退磁能力及有限元仿真的可行性。Aiming at the problem of irreversible demagnetization problem of permanent magnet of the IPMSM because of the high temperature and demagnetization current and based on the demagnetization mechanism of permanent magnets,a 30 kW IPMSM is taken as an example to establish its 2D finite element model.The effects of different d,q axis demagnetization currents and temperature on the demagnetization performance of permanent magnets were calculated and analyzed.Then,several methods for improving the anti-demagnetization capability of IPMSM was proposed.Finally,the prototype was manufactured and the demagnetization experiment of the prototype was tested.Meanwhile,the experimental no-load EMF results were compared with the simulation results which proved the anti-demagnetization ability of motor and feasibility of finite element method.

关 键 词：有限元 内置式永磁同步电机 退磁性能 

分 类 号：TM351[电气工程—电机] TM341