城轨交通用磁通反向永磁直线电机的垂向力控制  

Control of Vertical Force in Flux-Reversal Permanent Magnet Linear Motor for Urban Rail Transit Applications

作　　者：赵文祥[1] 刘虎[1] 吉敬华[1] 徐亮[1] 

机构地区：[1]江苏大学电气学院,江苏镇江212013

出　　处：《电机与控制应用》2013年第12期29-33,共5页Electric machines & control application

基　　金：国家自然科学基金(51277194);江苏省自然科学基金(BK2012711)

摘　　要：磁通反向永磁直线(FRPML)电机是一种新型的初级永磁体直线电机。在分析其电机结构特点与工作原理基础上,推导并建立了数学模型。FRPML电机的垂向力会对其效率等产生不利影响。分析了垂向力的组成与特性,得到解析表达式。提出了电机的垂向力最优控制,使FRPML电机保持正常推力下,提高电机性能。研究结果表明,所提出的优化控制策略正确有效。The flux-reversal permanent magnet linear （FRPML） machine is a new class of primary permanent magnet linear machine. It can be manufactured easily and installed expediently, suitable for the long stator applications, such as urban rail transit. The mathematical model was built based on its operation principles. The vertical force would reduce the motor efficiency. Therefore, according to the physical characteristics analyses of the vertical force, its analytical model was derived. The optimal control was obtained, hence improving the motor performance. The results verified the proposed control strategy.

关 键 词：直线电机 永磁电机 磁通反向 垂向力 

分 类 号：TM301.2[电气工程—电机]