无功功率可控的双级矩阵变换器空间矢量调制策略

双级矩阵变换器是一种新型拓扑结构的矩阵变换器，它相对常规矩阵变换器更具发展潜力。文中提出了参考输入电压概念，在双级矩阵变换器空间矢量调制策略中利用参考输入电压来实现无功功率的调节，并给出了详细的调制方法，分析了输入功率因数和双级矩阵变换器电压传输比的关系。仿真结果表明：所提出的方法能获得优良的输入输出性能、能有效调节双级矩阵变换器输入功率因数。

Space Vector Modulation of Two-stage Matrix Converter for the Control of Reactive Power

Two-stage matrix converter (TSMC) is a kind of new matrix converter with novel topology, which has more potentials than conventional matrix converter (CMC). The concept of reference input voltage is proposed and used in the space vector modulation strategy of TSMC, which can implement the control of reactive power of TSMC. In the paper the detailed modulation method is analyzed and deduced. The relationship between the input factor and the voltage transfer ratio is also analyzed. Simulation results prove that the method can obtain excellent input and output performance and is valid in regulating the input factor of the two-stage matrix converter.