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High Voltage Direct Current Power Converter

Technology Benefits

Reduces the cost and complexity of new HVDC power grids Allows a simple low cost switch to be used as a circuit breaker The ability to force the current to zero overcomes the problem of contact wear due to arcing

Detailed Technology Description

Transmission of power in VSC based HVCD power distribution grids has the advantage of being able to transmit large amounts of power over long distances more efficiently and at lower capital cost that AC systems. However, a major problem with HVDC grids is the need to suppress DC fault currents to protect the converters and the DC grid. DC fault current suppression is extremely important for a VSC HVDC power transmission system to suppress both AC and DC currents arising from a DC-side (or DC-grid) short circuit, to control and protect the converters and the DC grid, and hence isolate the faulty DC circuit. Existing solutions utilize switching systems using expensive DC circuit breakers that contribute significantly to the capital cost of developing DC grids.

Supplementary Information

Patent Number: GB201120640D0
Application Number: GB201120640A
Priority Date: 30 Nov 2011
Priority Number: GB201120640D0
Application Date: 30 Nov 2011
Publication Date: 11 Jan 2012
Assignee Applicant: Univ Birmingham
Title: Power converter
Usefulness: Power converter

Industry

Electronics

Sub Group

Circuit Design

Country/Region

USA

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