Electricity: power supply or regulation systems – For reactive power control – Using impedance
Patent
1995-08-03
1997-09-30
Berhane, Adolf
Electricity: power supply or regulation systems
For reactive power control
Using impedance
323209, G05F 170
Patent
active
056729561
ABSTRACT:
A static reactive power compensating equipment includes a circuit for preventing harmonic currents generated by adjusting lag compensation current from phase control from flowing out of the equipment. A first reactor and a controller are connected to a switching circuit. A second reactor is connected between an output terminal and a connection node. The first reactor is also connected to the connection node such that the first and second reactors are series connected. A resonant circuit including a third reactor connected in series with a capacitor is connected to the connection node such that the resonant circuit is series connected with the second reactor and parallel connected to the first reactor. The resonant circuit is constructed to resonate at a predetermined frequency which substantially absorbs harmonic currents flowing from the static reactive power compensating equipment.
REFERENCES:
patent: 4513240 (1985-04-01), Putman
patent: 4555659 (1985-11-01), Gyugyi
patent: 4602200 (1986-07-01), Walker
patent: 4686447 (1987-08-01), Takeda et al.
patent: 4752726 (1988-06-01), Aoyama
patent: 4891570 (1990-01-01), Nakamura et al.
patent: 4999565 (1991-03-01), Nilsson
Fukui Tsutomu
Niu Tokihide
Berhane Adolf
Matsushita Electric - Industrial Co., Ltd.
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