Control apparatus of DC power coupling system
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United States of America Patent
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-
Apr 23, 1991
Grant Date -
N/A
app pub date -
Nov 1, 1989
filing date -
Nov 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coupling system in which power converters are coupled through a DC circuit to exchange active power between the converters comprises a control apparatus for controlling active power exchanged between each converter and its AC system. The control apparatus includes an automatic active power regulator for regulating active power exchanged between the converters and the AC system to be equal to be predetermined active power reference value, and an automatic DC voltage regulator for regulating a DC voltage of the DC circuit to be equal to a predetermined DC voltage reference value. When an output signal from the automatic active power requlator of each converter is input as an upper limit value of an output signal from the automatic DC voltage regulator, a DC voltage reference value of one converter is set to be equal to or larger than a DC voltage reference value of the remaining power converter.
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