Patent ID: 11888309
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A fault handling system of a solid-state transformer, comprising a first power unit and a second power unit that are cascaded and connected, wherein:
the first power unit comprises a first busbar capacitor and a first auxiliary supply, wherein the first auxiliary supply and a first control module are both electrically connected to two ends of the first busbar capacitor, the first control module is electrically connected to the first auxiliary supply, the first control module comprises a first detection circuit, the first detection circuit is electrically connected to the two ends of the first busbar capacitor, and the first detection circuit is configured to detect a voltage of the first busbar capacitor;
the second power unit comprises a second busbar capacitor and a second auxiliary supply, wherein the second auxiliary supply is electrically connected to two ends of the second busbar capacitor and the second busbar capacitor is connected in series to the first busbar capacitor; and
the first control module is configured to close the first auxiliary supply in response to the first detection circuit detecting that the voltage of the first busbar capacitor is less than or equal to a second threshold.