基于矩阵变换器的随机脉冲位置PWM控制策略的研究  

Research for a Randomized Pulse Position PWM Control Strategy Based on Matrix Converter

作　　者：肖鹏[1] 粟梅[1] 孙尧[1] 

机构地区：[1]中南大学

出　　处：《电气传动》2006年第3期11-14,共4页Electric Drive

摘　　要：提出了一种基于传统空间电压矢量PWM的随机脉冲位置PWM控制策略,并应用于矩阵变换器中,该策略通过随机改变每个开关周期中零矢量的位置,实现了两种低开关损耗PWM模式之间的随机转换,使矩阵变换器输出电压的谐波成分均匀地分布在较宽的频带范围内。给出了矩阵变换器的仿真模型,通过M atlab/S im u link仿真验证了随机脉冲位置PWM的可行性和正确性。A novel randomized pulse position PWM based on traditional voltage space vectors is proposed, which is worked on the model of matrix converter. In the strategy, the positions of the zero voltage vectors are randomly changed, and then two PWM modes with low switching losses are selected randomly, which make harmonic that comes from matrix converter distribute in a wider frequency range evenly. The simulation results verify the feasibility and the practicability of the novel randomized pulse position PWM.

关 键 词：矩阵变换器 空间矢量调制 随机控制 仿真 

分 类 号：TM351.012[电气工程—电机] TM921.2