两种驱动方式下永磁直线开关磁链电机的研究  

Study of Permanent Magnet Linear Flux Switch Motor in Two Driven Modes

作　　者：汪旭东[1] 卞芳方 许孝卓[1] 卞建生 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003

出　　处：《电气传动》2015年第9期7-10,共4页Electric Drive

基　　金：国家自然科学基金项目(61074095);国家自然科学基金项目(51277054);国家自然科学基金项目(U1361109)

摘　　要：永磁开关磁链电机数学模型可以等效为永磁无刷电机,普遍采用方波驱动方式。在有限元基础上分析6/7极直线式磁链电机反电势波形,采用方波和正弦波驱动方式,比较两种方式下的电流、电压、平均推力大小及波动系数,计算不同方式下电机铜耗、铁耗以及永磁铁涡流损耗。仿真表明:在同一速度下,两相导通方波方式下的推力小于正弦波驱动方式下的力,同时总损耗也小于正弦波驱动方式下损耗,可以在不同应用场合中选择不同驱动方式。Rotary switch flux permanent magnet motor model can be equivalent to a permanent magnet brushless motor, so square wave drive mode is commonly used, mainly analyzed 6/7 pole switch flux permanent magnet linear motor baek-emf waveform curve on the basis of the finite element, using a square-wave drive mode and a sine-wave drive mode, the size of current, voltage, average thrust and coefficient of fluctuation were compared in the two modes, the motor copper loss, iron loss and permanent magnet eddy current loss were calculated, the simulation analysis shows： under the conditions of the same velocity, the thrust force in two-phase conduction square wave drive mode is less than the sine wave drive , while the total loss in square-wave drive mode is lower than in sine-wave drive mode, different drive modes can be used in different applications.

关 键 词：永磁直线开关磁链电机 转矩波动 铜耗 驱动方式 

分 类 号：TM352[电气工程—电机]