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:
Jul. 21, 2026
Filed:
Mar. 21, 2024
Abb Schweiz Ag, Baden, CH;
Shuyan Zhao, Raleigh, NC (US);
Chunmeng Xu, Raleigh, NC (US);
Lakshmi Ravi, Raleigh, NC (US);
Zhou Dong, Raleigh, NC (US);
ABB Schweiz AG, Baden, CH;
Abstract
A power semiconductor circuit is provided for clamping the voltage across the circuit during a fault. The circuit may include a power semiconductor switch, a clamping branch coupled in parallel with the power semiconductor switch, a snubber branch coupled in parallel with the power semiconductor switch and the clamping branch, and an isolation switch coupled in series with the power semiconductor switch. The clamping branch may include a first capacitor and a surge arrester coupled in parallel with a first resistor. The first capacitor may be coupled in series with the surge arrester and the first resistor. The snubber branch may include a second capacitor, a plurality of resistors, and a diode.