Circuit Topologies and General PWM(Pulse Width Modulation) Theory of Matrix Converters

交流-交流功率变换器用于变速交流电机驱动系统。矩阵变换器是下一代高效、高功率密度的交流功率变换器的发展方向。然而，用于控制矩阵变换器输出电压和输入电流的通用PWM控制方案尚未建立。本文利用换相次数的减少控制和输出电压谐波的评估方法，推导了矩阵变换器三种电路配置的通用PWM控制方案。给出了实验中的控制特性。

An ac to ac power converter is used for the variable-speed ac-motor drive system. Matrix converters are developed for ac to ac power converters with high efficiency and high power density in the next generation. However, the general PWM control scheme for controlling the output voltage and the input current of the matrix converter has not established. In this study, the general PWM control scheme for three circuit configurations of the matrix converters has been derived using the reduction control of the number of commutations and the evaluation method of the output voltage harmonics. The control characteristics in experiments are shown.