H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 3/18 (2006.01)
Patent
CA 2127157
According to the present invention, there is pro- vided a self-commutated static var compensator for sta- bilizing a power system by controlling an output of a self-commutated converter for receiving/supplying power from/to the power system. A constant system voltage maintaining controller calculates a first target value signal of the reactive current in accordance with a dif- ference between a reference voltage and a voltage detected by a voltage detector, and a reactive current controller generates a second target value signal of the reactive current in accordance with a difference between the first target value signal of the reactive current and a detected current. A converter controller applies a gate driving pulse to the self-commutated converter in response to the second target value signal of the reac- tive current and second target value signal of the active current. A loss reduction circuit stops the gate driving pulse corresponding to the second target value of the reactive current from being supplied to the gate of the self-commutated converter when reactive power output from the self-commutated converter is close to zero.
Ichikawa Fumitoshi
Mori Takashi
Ichikawa Fumitoshi
Kabushiki Kaisha Toshiba
Mori Takashi
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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