Device for limiting switching frequency of a parallel capacitor

Details Device for limiting switching frequency of a parallel capacitor Device for limiting switching frequency of a parallel capacitor

1987-03-06

1988-09-13

Salce, Patrick R.

Electricity: power supply or regulation systems

For reactive power control

Using impedance

G05F 500

Patent

active

047712252

ABSTRACT:
A reactive power compensation device has minimum residual reactive power and avoid hunting. The compensation device is connected to an AC power supply network with a variable reactive load. Capacitor banks are connected in parallel with the load, and a pertinent number of banks are switched on and off periodically at a pre-determined time interval. The reactive power in both the load and the capacitor banks are detected and used for controlling the capacitor banks.

REFERENCES:
patent: 3300712 (1967-01-01), Segsworth
patent: 3391329 (1968-07-01), Meyer
patent: 3754184 (1973-08-01), Stone
patent: 4204150 (1980-05-01), Mathieu
patent: 4621198 (1986-11-01), Roberge et al.
patent: 4645997 (1987-02-01), Whited
ASEA Reg. 48976, 7143, pp. 3-7; "Power-Factor Correction with Thyristor-Controlled Capacitors"; H. Frank et al.

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