摘要
为了减小无刷直流电动机(Brushless DC Motor,BLDCM)固有的换相转矩脉动,提出一种基于电磁功率分配(Electromagnetic Power Distribution,EMPD)的BLDCM控制结构。根据电磁功率分配原理设计了一种线性EMPD函数,使用线性EMPD函数将总电磁功率分配到三相电磁功率中,由相电磁功率和反电动势计算出期望的三相电流,并通过电流控制器调节,最后由逆变器输出实际的三相电流。仿真结果表明:提出的EMPD方法可有效抑制换相转矩脉动。
In order to reduce the commutation torque ripple inherent in Brushless DC Motor(BLDCM).a BLDCM control structure based on Electromagnetic Power Distribution(EMPD)is proposed.A linear EMPD function is designed according to the principle of electromagnetic power distribution.The total electromagnetic power is distributed to the three phases using the linear EMPD function,and the desired three-phase current is calculated from the phase electromagnetic power and back electromotive force,the actual three-phase current is adjusted by the current regulator and finally outputted by the inverter.Simulation results show that the proposed EMPD method can effectively suppress commutation torque ripple.
作者
辛壮壮
王家军
XIN Zhuangzhuang;WANG Jiajun(School of Automation,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)
出处
《杭州电子科技大学学报（自然科学版）》
2021年第1期50-56,共7页
Journal of Hangzhou Dianzi University：Natural Sciences
基金
国家自然科学基金资助项目(61873079)
浙江省重点研发资助项目(2021C03034)。
关键词
无刷直流电动机
电磁功率分配
换相转矩脉动
脉冲宽度调制
brushless direct current motor
electromagnetic power distribution
commutation torque ripple
pulse width modulation
