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:
Nov. 17, 2020
Filed:
Aug. 11, 2016
Efacec Energia, Máquinas E Equipamentos Eléctricos, S.a., Guardeiras, PT;
Ataollah Mokhberdoran, Guardeiras, PT;
Nuno Silva, Guardeiras, PT;
António Carrapatoso, Oporto, PT;
Adriano Da Silva Carvalho, Oporto, PT;
Helder Leite, Oporto, PT;
EFACEC ENERGIA, MÁQUINAS E EQUIPAMENTOS ELÉCTRICOS, S.A., Moreira-Maia, PT;
Abstract
A circuit breaker and fault current managing branch thereof for power transmission using Direct Current (DC) applications. A surge suppressor having DC bus terminal, transmission line terminal, and common terminal. An auxiliary branch comprises a pre-chargeable capacitor. The capacitor is charged by the DC bus before the circuit breaker is closed for operation and the capacitor is connected to be discharged to the transmission line when the circuit breaker is opened in operation, for suppressing the surge voltage across the circuit breaker. The auxiliary branch may comprise a charge sub-branch comprising a first controlled semiconductor switch for closing the charge sub-branch and charging the capacitor by the DC bus before the circuit breaker is closed. The auxiliary branch may comprise a discharge sub-branch comprising a second controlled semiconductor switch for closing the discharge sub-branch and discharging the capacitor to the transmission line when the circuit breaker is opened in operation.