气隙磁场波形及磁瓦充磁方式对无刷直流电动机性能的影响  

Influence of Airgap Field Distribution and Surface PM Magnetisation in Brushless DC Motors

作　　者：沈建新[1] 费伟中[1] 陈利根[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《微特电机》2006年第6期7-9,共3页Small & Special Electrical Machines

基　　金：浙江省自然科学基金(Y104442);2005年教育部留学回国人员科研启动基金

摘　　要：对比研究了梯形(或方波)气隙磁场与正弦气隙磁场对无刷直流电动机若干性能的影响,指出在不作PWM电流调制时正弦磁场更适合于无刷直流电动机,并且在使用表面粘贴磁瓦时平行充磁优于径向(辐射)充磁。Influence of airgap field distribution, either in trapezoidal/rectangle waveform or sinusoidal waveform, on the performance of a brushless DC motor is comparatively studied. It shows that the sine - wave airgap field exhibits better performance in the case that the motor current is not regulated to square -wave with PWM. Furthermore, parallel magnetisation for surface -mounted magnets is better than radial magnetisation.

关 键 词：无刷直流电动机 气隙磁场 反电势 电磁转矩 齿槽定位力矩 定子铁耗 转子涡流损耗 

分 类 号：TM38[电气工程—电机]