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AssigneeLs Electric Co., Ltd.
InventorsKwang Kyu HWANG, Jae Ho LEE, Jeong Woo LIM
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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.
A power supply device using a DC link voltage of a high-voltage unit of a solid-state transformer, which is a device for supplying control power to a transformer control unit that controls the high-voltage unit using the DC link voltage of the high-voltage unit of the solid-state transformer, the power supply device comprising:
Dependencies are inferred from the claim text.