矩阵变换器SPWM调制策略研究

Research on the SPWM Modulation Strategy in Matrix Converter

矩阵变换器的工作原理、等效交—直—交变换、SPWM(Sine Pulse Width Modulation)控制策略进行了理论分析及仿真研究.SPWM控制策略的最大特点是控制方案简单、控制开关函数不需要复杂的数学推导和计算,变换器输出线电压满足正弦规律,且输出频率可调.并对其进行了计算机仿真,从理论上验证了该控制策略的可行性.

An introduction is given, which includes the background, purpose and meaning of research work, the configuration of MC and matrix converter＇ s control methods. The principles and the equivalent AC-DC-AC topology of MC, and the SPWM strategy is analyzed and modulated. The characteristic of SPWM is that the control is simple, the control switch function needn＇t completed math reasoning and calculation, the output line voltages of converter meet sinusoidal rule, and the output frequency can be modulated. Simulations and experiments are used to identify its feasibility.