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Patent Searching and Data


Title:
MODULE
Document Type and Number:
WIPO Patent Application WO/2015/010827
Kind Code:
A3
Abstract:
A module (30) for use in a voltage source converter comprises: first and second terminals (48,50) for connection to an electrical network; an energy storage device (52); at least one switching element, the or each switching element being switchable to switch the energy storage device (52) into or out of circuit with the first and second terminals (48,50) to selectively provide a voltage source; and a voltage-limiting component and/or a resistive element (58), the switching element or at least one of the switching elements being switchable to selectively form a current path that passes through the voltage-limiting component and/or the resistive element (58), the switching element or at least one of the switching elements being further switchable to selectively switch the energy storage device (52) into or out of circuit with the voltage-limiting component and/or the resistive element (58), wherein the module (30) includes a plurality of electrical blocks (54a,54b,54c,54d) arranged as first and second pairs of electrical blocks, the first and second pairs of electrical blocks (54a,54b,54c,54d) being connected in parallel with the energy storage device (52) in a full-bridge arrangement, each of the plurality of electrical blocks (54a,54b,54c,54d) including a switching element, one of the plurality of electrical blocks (54a,54b,54c,54d) including the voltage-limiting component and/or one of the plurality of electrical blocks (54a,54b,54c,54d) including the resistive element (58).

Inventors:
WHITEHOUSE, Robert Stephen (23 Milford Road, Walton on the Hill, Stafford ST17 0JU, GB)
DAVIDSON, Colin Charnock (21 The Crescent, Walton on the Hill, Stafford ST17 0JZ, GB)
Application Number:
EP2014/062480
Publication Date:
May 28, 2015
Filing Date:
June 13, 2014
Export Citation:
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Assignee:
ALSTOM TECHNOLOGY LTD (Brown Boveri Strasse 7, Baden, CH-5400, CH)
International Classes:
H02M1/32; H02J3/36; H02M5/44
Domestic Patent References:
WO2012159668A12012-11-29
WO2012116738A12012-09-07
Foreign References:
US20120218672A12012-08-30
Other References:
ANANDARUP DAS ET AL: "A method for charging and discharging capacitors in Modular Multilevel Converter", IECON 2011 - 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY, IEEE, 7 November 2011 (2011-11-07), pages 1058 - 1062, XP032104629, DOI: 10.1109/IECON.2011.6119454
Attorney, Agent or Firm:
MARSHALL, Caroline (Potter Clarkson LLP, The Belgrave CentreTalbot Street, Nottingham NG1 5GG, GB)
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