Abstract: Provided is a hybrid DC chained energy storage converter, including: a positive DC bus; a negative DC bus; a main circuit inductor; at least one high frequency sub module, including a first switch circuit and a first capacitor connected in parallel; a plurality of low frequency sub modules each including a second switch circuit and an energy storage element connected in parallel, the main circuit inductor, the at least one high frequency sub module and the plurality of low frequency sub modules being connected in series to form a series branch, and the series branch being connected to the positive DC bus and the negative DC bus, respectively; and a controller, coupled to the first switch circuit of the at least one high frequency sub module and second switch circuits of the plurality of low frequency sub modules, respectively.

Abstract: The present disclosure provides a conversion system with a high voltage side and a low voltage side, including: a plurality of power units, each power unit including: a plurality of DC/DC converters, when in normal operation, one part of DC/DC converters being in a working state and other DC/DC converters being in a cold backup state; a plurality of bypass circuits connected in parallel to the corresponding DC/DC converters; a detection unit connected to each DC/DC converter, and detects the DC/DC converter; and a control unit coupled to the detection unit and each of the plurality of DC/DC converters; and a main control unit coupled with each control unit and configured to receive the preset signal of respective control unit and outputs a bypass signal and a release signal to the corresponding control unit according to the preset signal.

Abstract: The present disclosure provides a conversion system with a high voltage side and a low voltage side, including: a plurality of power units, each power unit including: a plurality of DC/DC converters, when in normal operation, one part of DC/DC converters being in a working state and other DC/DC converters being in a cold backup state; a plurality of bypass circuits connected in parallel to the corresponding DC/DC converters; a detection unit connected to each DC/DC converter, and detects the DC/DC converter; and a control unit coupled to the detection unit and each of the plurality of DC/DC converters; and a main control unit coupled with each control unit and configured to receive the preset signal of respective control unit and outputs a bypass signal and a release signal to the corresponding control unit according to the preset signal.

Abstract: Provided are a three-level power converter and a power unit thereof. The power unit includes a power switch module and a laminated busbar structure. The power switch module includes a first power semiconductor switch module and a clamping diode module, which have a first, second, and third terminal respectively. The laminated busbar structure includes a third, second, and first busbar layer laminated on the power switch module. The third busbar layer includes a first sub-busbar connecting to the first terminal of the first power semiconductor switch module, a second sub-busbar connecting to the third terminal of the first power semiconductor switch module and the first terminal of the clamping diode module, a third sub-busbar connecting to the second terminal of the clamping diode module and the third terminal of the second power semiconductor switch module, and a fourth sub-busbar connecting to the second terminal of the second power semiconductor switch module.

Abstract: Provided are a three-level power converter and a power unit thereof. The power unit includes a power switch module and a laminated busbar structure. The power switch module includes a first power semiconductor switch module and a clamping diode module, which have a first, second, and third terminal respectively. The laminated busbar structure includes a third, second, and first busbar layer laminated on the power switch module. The third busbar layer includes a first sub-busbar connecting to the first terminal of the first power semiconductor switch module, a second sub-busbar connecting to the third terminal of the first power semiconductor switch module and the first terminal of the clamping diode module, a third sub-busbar connecting to the second terminal of the clamping diode module and the third terminal of the second power semiconductor switch module, and a fourth sub-busbar connecting to the second terminal of the second power semiconductor switch module.