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Method and system for a gas tube switch-based voltage source high voltage direct current transmission system

United States Patent

9,520,801
December 13, 2016
View the Complete Patent at the US Patent & Trademark Office
A voltage source converter based high-voltage direct-current (HVDC) transmission system includes a voltage source converter (VSC)-based power converter channel. The VSC-based power converter channel includes an AC-DC converter and a DC-AC inverter electrically coupled to the AC-DC converter. The AC-DC converter and a DC-AC inverter include at least one gas tube switching device coupled in electrical anti-parallel with a respective gas tube diode. The VSC-based power converter channel includes a commutating circuit communicatively coupled to one or more of the at least one gas tube switching devices. The commutating circuit is configured to "switch on" a respective one of the one or more gas tube switching devices during a first portion of an operational cycle and "switch off" the respective one of the one or more gas tube switching devices during a second portion of the operational cycle.
She; Xu (Clifton Park, NY), Chokhawala; Rahul Shantilal (Niskayuna, NY), Zhou; Rui (Niskayuna, NY), Zhang; Di (Niskayuna, NY), Sommerer; Timothy John (Ballston Spa, NY), Bray; James William (Niskayuna, NY)
General Electric Company (Niskayuna, NY)
14/ 824,752
August 12, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under contract number DE-AR0000298 awarded by the Department of Energy (DOE). The Government may have certain rights in this invention.