基于固定环宽的矩阵变换器的滞环电流控制策略的研究

Research on Matrix Converter with Fixed-band Hysteresis Current Control Strategy

介绍了基于固定环宽滞环电流控制的矩阵变换器的工作原理,它是将矩阵变换器等效为虚拟整流器和虚拟逆变器的串接,然后在虚拟逆变器上做固定环宽滞环电流控制;分析和推导了矩阵变换器在这种策略下的开关状态和控制规律;给出了在一个周期里,划分输入电压相区,输出电流相区的原则,确定了开关规则表;最后通过仿真得到了输出线电压和电流波形,其结果验证了文中提出的矩阵变换器控制策略的可行性.

The control principle of matrix converter with fixedband hysteresis current control strategy is introduced. The matrix converter is equivalent to a virtual inverter which adopts the fixedband hysteresis current control strategy and a virtual rectifier. In addition, the relevant switch state and the control rules are deduced, and the new switching rules are presented by the reasonable sector partition of input voltage and output current. The simulation results about the output threephase lineline voltage and current waveform verify the feasibility of the control strategy. 