The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2026
Filed:
Aug. 21, 2024
Sungrow Power Supply Co., Ltd., Hefei, CN;
Sungrow Power Supply Co., Ltd., Hefei, CN;
Abstract
A fault detection method and a fault protection method for a power conversion system, and a power conversion system are provided, which relate to the technical field of fault detection for circuits. The fault detection method includes: controlling, when the power conversion system operates in a reactive mode, an alternating current pre-charge power supply to operate to charge a bus capacitor of the power conversion system, where the bus capacitor supplies power to a digital signal processor (DSP) through a first switch power supply (SPS), determining whether the DSP is energized to obtain a first determination result, and determining that the bus capacitor is short-circuited if the first determination result indicates that the DSP is de-energized. According to the present disclosure, when the bus capacitor of the power conversion system is short-circuited, the short-circuit fault of the bus capacitor can be detected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile