基于开关电感型准Z源网络的BLDCM转矩脉动抑制

Torque Ripple Suppressing for Brushless DC Motor Based on Switched-inductor Quasi-Z-source

利用开关电感型准Z源网络的高电压增益特性,通过调整逆变器直流输入电压,保持无刷直流电机换相电流的上升、下降斜率一致,构建了一种有效的转矩脉动抑制方式。所提网络相比传统Z源具有更高的升压比,并且网络拓扑中电容的电压应力较小,一定程度上增大了系统的适用范围。Matlab/Simulink仿真证明了该方法的可行性,且对于换相转矩波动的抑制效果明显。

By using the high voltage gain characteristic of the switched-inductor quasi-Z source net,an effective mode of torque ripple suppression was constructed by adjusting the DC input voltage of the inverter and holding the brushless DC motor commutation phase current rise,fall slope consistent.Compared to the traditional Z source,the network proposed had a higher boost ratio,and the voltage stress of the capacitor in the network topology was relatively small,to a certain extent,the application scope of the system was increased.Matlab/Simulink was used to prove the feasibility of this method,and the effect of commutation torque ripple suppression is obvious.