基于重复控制的BLDC换相转矩波动的抑制  

Minimization of Commutation Torque Ripple for BLDC Based on Repetitive Control

作　　者：钟黎萍[1] 张水平[1] 顾启民[1] 高珏 

机构地区：[1]常熟理工学院电气与自动化工程学院,江苏常熟215500

出　　处：《电测与仪表》2013年第7期113-117,共5页Electrical Measurement & Instrumentation

摘　　要：分析了BLDC换相转矩波动产生的原因,提出了一种基于重复控制原理的换相转矩波动抑制的新方法。该方法以换相时关断相的电流为调节器的给定值,根据重复控制原理来调节换相期间的电压,实现导通电流对关断电流的跟踪,保证换相期间总的转矩电流恒定,实现对换相转矩波动的抑制。这种方法从整体角度来看待换相,使调节器的输出性能不像传统PID控制那样受换相时间短的制约,具有较高的精度。仿真和实验结果证明了该方法的正确性。This paper analyzed the reason why the commutation torque ripple（CTR）of BLDC occurred and presented a new approach to minimize CTR.By means of this method,the turn-off phase current is set to be the given value of a repetitive control based regulator,which makes the turn-on phase current tracking the turn-offphase currentby regulating the terminal voltage of motor.Thus the total current in the circuit is kept constant and the CTR is minimized.This approach took up the three phase commutation as a integral course,so the short commutation time is no longer a restrict factor to the trackingperformance,as the traditional PID control did.Simulation and experimental results verify the validity of the proposed approach.

关 键 词：永磁无刷直流电机 换相转矩波动 重复控制 电流跟踪 

分 类 号：TM464[电气工程—电器]