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:
Oct. 14, 2025
Filed:
Nov. 29, 2022
The Florida State University Research Foundation, Inc., Tallahassee, FL (US);
Michael Johann Steurer, Tallahassee, FL (US);
Yanjun Shi, Tallahassee, FL (US);
The Florida State University Research Foundation, Inc, Tallahassee, FL (US);
Abstract
A direct current (DC) hybrid circuit breaker (HCB) includes a current sensor and a variable inductor. In the event of a short circuit fault current reaches a preset threshold, the current sensor will send a tripping signal to a controller, and the controller will command the gate drivers to conduct all the switches in the semiconductor switch path. This action will allow the fault current to be commuted to the power stack. When the current in a fast mechanical switch branch drops to near zero, the variable inductor will be driven out of the saturation and the secondary winding will send out a 'safe-to-open' signal to the controller. After receiving the “safe-to-open” signal, the controller will initiate the turn off sequence of the fast mechanical switch path.