一种基于极限轨迹法的新型矩阵变换器过调制策略(英文)

An Over-Modulation in Matrix Converter Based on Limit-Trajectory

针对矩阵变换器波形质量差和调制策略复杂的问题,本文提出了一种新型的基于极限轨迹矩阵变换器的过调制策略。该策略适用于虚拟不可控调制的矩阵变换器且在整个过调制区域中用于确保线性调制,算法简单。这种简单的控制算法减少了存储空间,而且用线性运算替换了查寻表格。仿真和实验表明电压传输比从0.95提高到1.0,并且有效地改善了输出波形质量。

Aimed at problem of poor quality of waveforms and that of complicated modulation strategy, a novel over-modulation in matrix converter based on limit-trajectory is proposed in this paper This strategy is adopted in matrix converter based on the virtual uncontrollable modulation and used to ensure linear modulation in all over-modulation regions. The algorithm is simple and the simpler control algorithm reduces memory space and linear calculation is instead of look-up table. Simulation and experiments show that the voltage transfer ratio can be improved from 0.95 to 1.0 and the quality of output waveforms is effectively enhanced.