【摘要】 矩阵式变换器是一种直接型的交鄄交变换器,没有中间大容量直流储能环节,具有功率因数高,谐波小等特点。本文根据矩阵式变换器的空间矢量调制原理以及四步换流策略,仿真研究了不同采样频率,四步换流策略最小开关时间及电流方向检测错误等对稳态网侧性能的影响。根据实际情况为实验样机设计了一台输入滤波器,达到了很好的滤波效果。更多还原

【Abstract】 Matrix convert is a direct AC-AC power conversion device.Matrix converter requires no large reactive energy storage as it has no DC link.It can provide unit power factor,and the input current is sinusoidal. Researching the stably performance has great effect on the control of the power quality.In this paper, the effects on the stably performance of power system have been analyzed in the conditions of different sample frequency, considering the switch time,the failure of the output current direction.Finally,the input filter for the matrix converter has a good effect on the power system.更多还原