Title:
HYBRID DC CIRCUIT BREAKER AND METHOD FOR CONTROLLING
Document Type and Number:
WIPO Patent Application WO/2014/177874
Kind Code:
A3
Abstract:
A circuit breaker and method of controlling Direct Current is disclosed. The circuit breaker has a primary conduction path (202) comprising a positive temperature coefficient (PTC) device with a positive temperature coefficient of resistance and a mechanical switch (204, CB1) is connected in series with the PTC device. There is a secondary conduction path (210) with a semiconductor switch device (211, S1; 212, S2) arranged in parallel with the PTC device. The PTC device is arranged to commutate current to the secondary conduction path in response to an increase in current through the primary conduction path. The semiconductor switch device (211, S1; 212, S2) is controllable to break current flow through the secondary conduction path.
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Inventors:
CWIKOWSKI OLIVER NICHOLAS (GB)
BARNES MIKE (GB)
SHUTTLEWORTH ROGER (GB)
BARNES MIKE (GB)
SHUTTLEWORTH ROGER (GB)
Application Number:
PCT/GB2014/051354
Publication Date:
September 17, 2015
Filing Date:
May 01, 2014
Export Citation:
Assignee:
UNIV MANCHESTER (GB)
International Classes:
H02H7/26; H01H9/54; H01H33/59; H02H3/02; H02H3/087; H02H7/22; H02H9/02; H02H9/04; H02J3/36; H03K17/0814; H03K17/10; H03K17/12; H03K17/785
Foreign References:
US3925707A | 1975-12-09 | |||
GB2493911A | 2013-02-27 | |||
US5933311A | 1999-08-03 | |||
US20080043382A1 | 2008-02-21 | |||
DE19939066A1 | 2001-03-08 |
Attorney, Agent or Firm:
HGF LIMITED (Merchant Exchange17-19 Whitworth Street West, Manchester M1 5WG, GB)
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