Title:
HYBRID CIRCUIT BREAKER, HYBRID CIRCUIT BREAKING SYSTEM, AND CIRCUIT BREAKING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/198985
Kind Code:
A1
Abstract:
The present invention provides a hybrid circuit breaker, a hybrid circuit breaking system, and a circuit breaking method. The hybrid circuit breaker includes: a semiconductor circuit breaker, connected between a first output end of a converter of a power supply or a source branch and a damping module; a first mechanical circuit breaker, connected in parallel to the semiconductor circuit breaker; an energy absorber, connected in parallel to the semiconductor circuit breaker; and a control apparatus, coupled to the semiconductor circuit breaker and the first mechanical circuit breaker, where when a current flowing through the converter is greater than its safe current, the control apparatus controls the first mechanical circuit breaker to be disconnected, and controls the semiconductor circuit breaker to be closed. In a hybrid circuit breaking mechanism provided in the present invention, a fault current can be interrupted before reaching a safe threshold, and the hybrid circuit breaker provided in the present invention has lower manufacturing costs than an SSCB.
Inventors:
DU FENG (CN)
CHEN WEI GANG (CN)
CHEN WEI GANG (CN)
Application Number:
PCT/CN2019/080553
Publication Date:
October 08, 2020
Filing Date:
March 29, 2019
Export Citation:
Assignee:
SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)
SIEMENS LTD CHINA (CN)
International Classes:
H01H9/54
Domestic Patent References:
| WO2011044928A1 | 2011-04-21 |
Foreign References:
| CN102696087A | 2012-09-26 | |||
| US20130021708A1 | 2013-01-24 | |||
| CN107276045A | 2017-10-20 |
Other References:
See also references of EP 3931851A4
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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