A solid-state transformer, comprising a plurality of power units, wherein each of the plurality of power units comprising a first subsidiary power supply circuit, a first power circuit, a first transformer and a second power circuit;
- the first power circuit comprises an alternating current/alternating current power main circuit and a first control module coupled to the alternating current/alternating current power main circuit;
- an input end of the first subsidiary power supply circuit is coupled to a bus of the alternating current/alternating current power main circuit, an output end of the first subsidiary power supply circuit is coupled to the first control module, the alternating current/alternating current power main circuit comprises an input end and an output end, and the input end of the alternating current/alternating current power main circuit is coupled to a grid power supply system;
- the alternating current/alternating current power main circuit is configured to adjust a voltage from the grid power supply system, and output the voltage through the output end of the alternating current/alternating current power main circuit;
- the first control module is configured to detect at least one of a status or information of the alternating current/alternating current power main circuit, and drive the alternating current/alternating current power main circuit based on at least one of the status or information of the alternating current/alternating current power main circuit;
- the first subsidiary power supply circuit is configured to adjust a voltage of the bus of the alternating current/alternating current power main circuit, and output a direct current voltage to the first control module;
- and
- the second power circuit comprises an alternating current/direct current power main circuit and a second control module coupled to the alternating current/direct current power main circuit, and the alternating current/direct current power main circuit comprises an input end and an output end;
- an input end of the first transformer is coupled to the output end of the alternating current/alternating current power main circuit, and an output end of the first transformer is coupled to the input end of the alternating current/direct current power main circuit;
- the first transformer is configured to adjust the voltage input by the alternating current/alternating current power main circuit, and output a voltage to the alternating current/direct current power main circuit;
- the alternating current/direct current power main circuit is configured to rectify the voltage input by the alternating current/direct current power main circuit, and output a direct current voltage through the output end of the alternating current/direct current power main circuit;
- and
- the second control module is configured to detect at least one of a status or information of the alternating current/direct current power main circuit, and drive the alternating current/direct current power main circuit based on at least one of the status or information of the alternating current/direct current power main circuit;
- and
- the solid-state transformer further comprise a second subsidiary power supply circuit, wherein
- input ends of all of the plurality of power units are connected in series to form an input end of the solid-state transformer;
- output ends of all of the plurality of power units are connected in parallel to form an output end of the solid-state transformer;
- an input end of the second subsidiary power supply circuit is coupled to the output end of the alternating current/direct current power main circuit, and an output end of the second subsidiary power supply circuit is coupled to the second control module;
- and
- the second subsidiary power supply circuit is configured to adjust the voltage input by the the alternating current/direct current power main circuit, and output the voltage to the second control module.