Reactive power compensation apparatus

Details Reactive power compensation apparatus Reactive power compensation apparatus

1987-09-01

1988-07-05

Beha, Jr., William H.

Electricity: power supply or regulation systems

For reactive power control

Using impedance

318438, G05F 170

Patent

active

047557389

ABSTRACT:
A reactive power compensation apparatus for compensating for voltage fluctuation of an AC power supply system includes a first arithmetic circuit for synthesizing a positive-phase fundamental wave voltage signal from voltages of the AC power supply system, a second arithmetic circuit for synthesizing negative-phase voltage signals from the voltages of the AC power supply system, a third arithmetic circuit, coupled to the first and second arithmetic circuits, for synthesizing current instructions from the positive-phase fundamental wave voltage and the negative-phase voltage signals, and a circuit, coupled to the third arithmetic circuit, for generating a reactive power corresponding to the current instructions.

REFERENCES:
patent: 3968422 (1976-07-01), Waldmann
patent: 4234842 (1980-11-01), Brennen et al.
patent: 4275346 (1981-06-01), Kelley
patent: 4652989 (1987-03-01), Kurosawa et al.
patent: 4698581 (1987-10-01), Shimamura et al.
The Transaction of the Institute of Electrical Engineers of Japan, vol. 103-B, No. 7, Jul. 1983, Hirotumi Akagi et al.
Denki Gakkai, Denryoku Gijutsu Kenkyukai, Jul. 1985.

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