Abstract: A switched tank converter includes at least three conversion units. Each conversion unit is a first-type conversion unit or a second-type conversion unit. An end of the support capacitor of each first-type conversion unit is electrically connected with a ground end. An end of a half-bridge clamping circuit of the second-type conversion unit is electrically connected with the ground end. A middle point of the half-bridge clamping circuit is electrically connected with an end of the support capacitor of the second-type conversion unit. The first-stage conversion unit is the first-type conversion unit. At least one conversion unit of the third-stage conversion unit to the Nth-stage conversion unit is the second-type conversion unit. Another end of the half-bridge clamping circuit of at least one second-type conversion unit is electrically connected with another end of the support capacitor of the lower-stage conversion unit excluding the first-stage conversion unit.

Abstract: The present invention discloses a hybrid transformation system based on three-phase voltage type PWM rectifier and multi-unit uncontrolled rectifier. The hybrid transformation system mainly consists of a three-phase reactor (L), a three-phase voltage type PWM rectifier module, an N-unit three-phase uncontrolled rectifier bridge module group, capacitors (C0-CN) and a DSP control circuit. An input end of the three-phase voltage type PWM rectifier module is in parallel connection with an input end of each three-phase uncontrolled rectifier bridge module. The three-phase voltage type PWM rectifier module may work in to situations, with load or without load, and the three-phase voltage type PWM rectifier module just does reactive power compensation when working without load. All modules of the three-phase uncontrolled rectifier bridge module group may work in to situations, with loads independently or all the outputs are in parallel connection and with a same load.

Abstract: The present invention discloses a hybrid transformation system based on three-phase voltage type PWM rectifier and multi-unit uncontrolled rectifier. The hybrid transformation system mainly consists of a three-phase reactor (L), a three-phase voltage type PWM rectifier module, an N-unit three-phase uncontrolled rectifier bridge module group, capacitors (C0-CN) and a DSP control circuit. An input end of the three-phase voltage type PWM rectifier module is in parallel connection with an input end of each three-phase uncontrolled rectifier bridge module. The three-phase voltage type PWM rectifier module may work in to situations, with load or without load, and the three-phase voltage type PWM rectifier module just does reactive power compensation when working without load. All modules of the three-phase uncontrolled rectifier bridge module group may work in to situations, with loads independently or all the outputs are in parallel connection and with a same load.