摘要
对于采用永磁体表面安装方式且气隙磁通为梯形波分布的无刷直流电机,为抑制电机转矩波动和提高电机效率,在可忽略电枢反应对电机气隙磁场影响的条件下,提出了一种新的综合考虑电机定子铜耗和旋转损耗的电机各相稳态等效电路模型,在此基础上用一种新的多目标优化控制方法来实现电机的转矩与效率控制,从而将电机的转矩波动抑制与效率优化统一到了一个框架内解决。仿真和实验结果表明:在同样的负载条件下,这种优化控制方法较两两换相方式的转矩波动小,电流有效值更小,电机效率得到了提高,当电机在非弱磁区运行时具有明显的应用优势。
The researching object is the trapezoidal BLDCM with surface-mounted permanent magnet materials, in order to suppress the torque fluctuation and improve motor efficiency, on the condition that the influence of armature reaction to motor＇s air gap flux linkage can be neglected, a new static equivalent circuit model of the BLDCM considering the stator copper loss and motor rotation loss is put forward, then a new multi-object optimizing control method is used to realize the optimizing control of the motor torque and efficiency. So the suppress of the torque ripple and the optimum control of the motor efficiency are unified and settled in the same regime. The results of the simulations and experiments show that, compared with the conventional commutation control method with two phases energized, the torque ripple of the optimizing control method is smaller and the efficiency is improved obviously. So it＇s of great advantage to use the new method in the non flux-weakening region.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第24期131-136,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(50421703)~~
关键词
无刷直流电机
转矩波动
旋转损耗
效率
换相
电枢反应
brushless direct current motor
torque ripple
rotation loss
efficiency
commutation
armature reaction
