BLDCM换相转矩脉动的优化策略  

Optimizing of Commutation Torque Ripple Strategy in Brushless DC Motor

作　　者：王晓锋[1] 林伟[1] 

机构地区：[1]广东工业大学计算机学院,广东广州510006

出　　处：《机电工程技术》2014年第9期14-18,共5页Mechanical & Electrical Engineering Technology

基　　金：广东省科技厅省部产学研结合项目(编号:2012B091100191)

摘　　要：首先建立了无刷直流电机(Brushless direct current motor,BLDCM)的数学模型,然后分析了换相转矩脉动的抑制原理,最后提出了低速阶段和高速阶段抑制换相转矩脉动的策略。此方法保证在换相期间,关断相的电流下降率和开通相的电流上升率绝对值相等,继而保证在换相期间非换相相电流保持恒定。搭建了实际直流无刷电机控制平台并进行实验验证,所提出的策略有效地抑制了直流无刷电机换相转矩脉动。First of all, this article creates the mathematical model of blushless DC Motor.Secondly, analyze the reduction theory of commutation torque ripple. Finally, put forward a strategy to reduce the commutation torque ripple from the low-speed level and high-speed level.This method guarantee equal between current decline rate of shutdown phase and current rising rate of opening phase during commutation, thus keep the current of un-commutation stable.Build a real brushless DC motor control platform for experimental verification,the proposed strategy of brushless DC motor commutation torque ripple is suppressed effectively.

关 键 词：直流无刷电机 换相转矩脉动 相电流 

分 类 号：TM33[电气工程—电机]