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:
Dec. 03, 2024
Filed:
Apr. 13, 2021
Drexel University, Philadelphia, PA (US);
Fei Lu, Wynnewood, PA (US);
Hua Zhang, Philadelphia, PA (US);
Reza Kheirollahi, Philadelphia, PA (US);
Yao Wang, Philadelphia, PA (US);
Shuyan Zhao, Philadelphia, PA (US);
Drexel University, Philadelphia, PA (US);
Abstract
With the fasting growth of renewable energy resources and DC supplied loads, DC electrical systems have been increasingly received attentions all over the world. DC breaker systems play a key role in protection systems for disconnecting sources and loads, and they are also used mainly for removing faulted sections from the system accurately and reliably. Solid state DC breakers benefit from fast response time and compactness features; however, due to the lack of zero current realization and high-power losses, the reliability and efficiency of these devices is low. The system proposes a solid-state DC breaker for medium voltage DC (MVDC) systems. The presented structure have two main parts: 1) a main conduction branch including stacked MV Silicon-Carbide (SiC) devices to improve the efficiency and provide a fast response time, 2) a breaker branch including a wireless capacitive coupling to avoid metal-to-metal contact and increase the overall reliability, and also a modular current pulse power supply to realize zero-current switching.