Title:
DC CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2021/140534
Kind Code:
A1
Abstract:
Provided is a DC breaking device having a plurality of first mechanical contact points, a plurality of second mechanical contact points, a plurality of commutation circuits, a first semiconductor circuit breaker, and a second semiconductor circuit breaker. The first mechanical contact points are respectively provided in a plurality of DC power transmission lines constituting a DC system. The second mechanical contact points are respectively provided between the plurality of first mechanical contact points and a common power transmission line to which the plurality of DC power transmission lines are commonly connected. The plurality of commutation circuits each have a capacitor and commutate the current flowing in a first direction toward the common power transmission line from any one of the plurality of DC power transmission lines or the current flowing in a second direction toward the DC power transmission lines from the common power transmission line. The first semiconductor circuit breaker can interrupt the current commutated by the commutation circuits and flowing in the first direction. The second semiconductor circuit breaker has a second end connected to the common power transmission line and can interrupt the current commutated by the commutation circuits and flowing in the second direction.
More Like This:
| JPS60188540 | WORKING MACHINE WITH SHOVEL |
Inventors:
KOYAMA YUSHI (JP)
ISHIGURO TAKAHIRO (JP)
ISHIGURO TAKAHIRO (JP)
Application Number:
PCT/JP2020/000019
Publication Date:
July 15, 2021
Filing Date:
January 06, 2020
Export Citation:
Assignee:
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H02H3/16; H02J1/00
Domestic Patent References:
| WO2014136229A1 | 2014-09-12 |
Foreign References:
| JP2017004869A | 2017-01-05 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
Download PDF: