摘要
变极永磁(pole-changingpermanentmagnet,PCPM)电机通过直接改变低矫顽力永磁材料的极性进行变极或变极弱磁调速,既具有变极感应电机的宽调速优点,又具有永磁电机的高效和高功率因数特性。因此,它在要求宽速和高效的运行场合具有广阔的应用前景。在研究PCPM电机变极调速原理和工作特性的基础上,按永磁体在电机内部位置将PCPM电机分为转子永磁型和定子永磁型2类,分析比较现有PCPM电机结构特点,归纳其共性规律和个性特点。阐述PCPM电机关键共性技术,对该类电机变极绕组设计、分析方法和磁极保护方法及控制技术等进行分析。最后,对PCPM电机后续研究和发展方向进行展望。
The pole-changing permanent magnet(PCPM)machine directly changes the polarity of low coercivity permanent magnet material for pole-changing or pole-changing flux weakening speed regulation.It not only possesses the advantages of wide speed regulation as the pole-changing induction motor,but also featured by the characteristics of high efficiency and high power factor of permanent magnet machine.Consequently,it is promising for some applications with wide speed and high efficiency range.On the basis of investigating the pole-changing speed-regulation principle and operating conditions of the PCPM machine,the reviewed machines can be divided into rotor-PM type and stator-PM type according to the PM position.This paper analyzed and compared the structure characteristics of the existing PCPM machines,and summarized their common regularity and individual characteristics.Meantime,the key common technologies of the PCPM machines were carried out,concerning mainly about the pole-changing winding design,analysis methods and pole protection schemes as well as control technologies.Finally,the future trends of the machine systems are prospected.
作者
杨公德
李捷
周扬忠
林明耀
YANG Gongde;LI Jie;ZHOU Yangzhong;LIN Mingyao(School of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,Fujian Province,China;School of Electrical Engineering,Southeast University,Nanjing 210096,Jiangsu Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第S01期303-314,共12页
Proceedings of the CSEE
基金
国家自然科学基金项目(52107039)
福州大学科研启动经费项目(510914)
关键词
变极永磁电机
变极感应电机
变极调速
绕组设计
磁极保护
pole-changing permanent magnet machine
pole-changing induction machine
pole-changing speedregulation
winding design
pole protection
