一种五相Boost矩阵变换器研究

摘要

研究了矩阵变换器的控制方法，针对传统矩阵变换器“虚拟逆变部分”拓扑大多是推挽式、半桥式和全桥式结构，因而电压传输比较低的情况，提出了一种五相Boost矩阵变换器的结构。该结构整流侧采用传统的矩阵整流电路，其控制策略采用无零空间矢量调制，虚拟逆变部分则采用Boost逆变电路，该逆变电路具有升压特性，能提高矩阵变换器的电压传输比，其电压传输比可以达到1.0甚至更高。对该矩阵变换器的滑模变结构控制策略进行了研究，而且通过仿真和样机实验验证了其理论的正确性，为矩阵变换器的工业应用提供了一定的理论基础。%The control of matrix converters was studied, and a five-phase Boost matrix converter was presented to deal with the problem that traditional matrix converters have the lower voltage transfer ratio because their inverter ’ s to pologic structures are mostly of push-pull, half bridge and full bridge. The converter adopts the traditional matrix rectifier circuit, and its control strategy uses the zero space vector modulation. The virtual inverter section uses the Boost inverter circuit, and the inverter circuit has the voltage boosting performance to improve the voltage transfer ratio of matrix converter to 1 or even higher. The stratege for sliding mode variable structure control for the matrix converter was studied, and the theory correctness of the converter was verified by simulation and experiment for pro-viding the theoretical basis for the industrial application of matrix converters.