McDermott Will & Emery LLP
HVDC rectifier protection using estimated and measured power
An HVDC power increase controller includes a command output unit for outputting a current command value according to a disturbance signal to a main controller; a voltage drop determiner receiving an alternating current (AC) voltage and comparing a level of the AC voltage to a lowest level of a voltage causing a rectification failure; and a power tracking determiner receiving a direct current (DC) power and comparing a level of the DC power to an estimated power level corresponding to the current command value. The command output unit adjusts the current command value according to a comparison result of the voltage drop determiner and the power tracking determiner.
Korea Electric Power Corporation
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H02M H02J H02M Y02E H02M
inventional inventional additional additional inventional
Seong Doo Soon Ho Chan Ki
Lee Choi Kim