POWER SUPPLY DEVICE USING DC LINK VOLTAGE OF HIGH-VOLTAGE UNIT OF SEMICONDUCTOR TRANSFORMER

Abstract: the present disclosure provides a power supply device for supplying, using a dc link voltage of a high-voltage unit of a semiconductor transformer, a control power to a transformer control unit for controlling the high-voltage unit, the power supply device comprising: a converter unit which includes a transformer unit and a switch connected in series to a primary side of the transformer unit, is connected to a dc link of the high-voltage unit, and is configured to convert the dc link voltage and output the converted dc link voltage to a transformer control unit; and a converter control unit configured to control on/off of the switch to convert the dc link voltage, wherein the converter unit comprises a first to a (n+1)th converter (wherein, n is an integer greater than or equal to 1) connected in series.

Inventor(s): Kwang Kyu HWANG, Jae Ho LEE, Jeong Woo LIM

CPC Classification: H02M3/33561 (APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers ; dynamo-electric converters ; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters ))

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