摘要
三电平逆变器中点电位不平衡问题影响永磁同步电机调速性能,基于电荷守恒控制策略对三电平逆变器中点电位进行控制,使中点电位趋于平衡。在Matlab/Simulink平台搭建基于三电平逆变器的PMSM转速电流双闭环控制系统模型,验证了电荷守恒控制策略对中点电位的抑制效果,同时证明了PMSM在中点电位平衡条件下良好的调速特性。
The neutral vohage imbalance of three-level inverter affected the PMSM speed control performance. The neutral voltage of three-level inverter was controlled based on the charge conservation theory strategy to balance the neutral voltage. The PMSM speed- current double closed- loop control system was established in the Matlab/ Simulink platform, proved the inhibitory effects of the charge conservation theory strategy applied on the neutral voltage, as well as the good speed regulation characteristic of PMSM under the condition of balanced neutral voltage.
出处
《电气传动》
北大核心
2014年第12期40-43,共4页
Electric Drive
关键词
三电平逆变器
永磁同步电机
空间矢量算法
电荷守恒
three-level inverter
permanet magnet synchronous motor （PMSM）
space vector strategy
charge conservation
