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Patent Searching and Data


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.

Inventors:
CWIKOWSKI, Oliver Nicholas (Oxford Road, Manchester Greater Manchester M13 9PL, GB)
BARNES, Mike (Oxford Road, Manchester Greater Manchester M13 9PL, GB)
SHUTTLEWORTH, Roger (Oxford Road, Manchester Greater Manchester M13 9PL, GB)
Application Number:
GB2014/051354
Publication Date:
September 17, 2015
Filing Date:
May 01, 2014
Export Citation:
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Assignee:
THE UNIVERSITY OF MANCHESTER (Oxford Road, Manchester M13 9PL, 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
GB2493911A
US5933311A
US20080043382A1
DE19939066A1
Attorney, Agent or Firm:
HGF LIMITED (4th Floor, Merchant Exchange17-19 Whitworth Street West, Manchester M1 5WG, GB)
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