外置并联分时选择开关隔离反激周波型单级多输入逆变器

本发明涉及一种外置并联分时选择开关隔离反激周波型单级多输入逆变器，其电路结构是由一个外置并联分时选择四象限功率开关的多输入单输出高频逆变电路将多个共地的输入滤波器和一个共用的输出隔离储能变压周波变换滤波电路联接构成，多输入单输出高频逆变电路的每个输入端与每个输入滤波器的输出端一一对应联接，多输入单输出高频逆变电路的输出端与输出隔离储能变压周波变换滤波电路的输入端相联接。这种逆变器具有多输入源共地且分时供电、输出与输入电气隔离、共用储能周波变换滤波电路、电路简洁、单级变换、效率高、负载短路时可靠性高、应用前景广泛等特点，为实现多种新能源联合供电的小容量分布式供电系统奠定了关键技术。 The invention relates to an isolated flyback cycle-type single-stage multi-input inverter with external parallel time-sharing selection switches. A circuit structure of the isolated flyback cycle-typesingle-stage multi-input inverter is formed by connecting multiple common-ground input filters and a common output isolated energy storage and variable-voltage cycle conversion filter circuit througha multi-input and single-output high frequency inverter circuit with external parallel time-sharing selection four-quadrant power switches; each input end of the multi-input and single-output high frequency inverter circuit is connected with an output end of each input filter in a manner of one-to-one correspondence; and the outp