Power factor correction circuit

Details Power factor correction circuit Power factor correction circuit

1996-11-25

1998-09-08

Berhane, Adolf

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

363125, G05F 1613, H02M 706

Patent

active

058049517

ABSTRACT:
A power factor correction device of a rectifier bridge supplied by an a.c. voltage for providing, by means of at least two capacitors, a rectified d.c. supply, comprises between two rectified supply lines a charge path of each capacitor; a switchable discharge path of each respective capacitor; a first control block for closing a first discharge path associated to a first capacitor only after the a.c. supply voltage crosses a maximum value; and a second control block for closing a second discharge path associated to a second capacitor at the expiry of a predetermined delay following the closing of the previous discharge path.

REFERENCES:
patent: 4792887 (1988-12-01), Bernitz et al.
patent: 5003454 (1991-03-01), Bruning
patent: 5012161 (1991-04-01), Borowiec et al.
patent: 5406471 (1995-04-01), Yamanaka
patent: 5471376 (1995-11-01), Tsai et al.
patent: 5502630 (1996-03-01), Rokhvarg
patent: 5642267 (1997-06-01), Brkovic et al.
Patent Abstracts of Japan, vol. 018, No. 570 (E-1623), Oct. 31, 1994 & JP-A-06 209574 (Sony Corp).
Patent Abstracts of Japan, vol. 007, No. 117 (P-198), May 21, 1983 & JP-A-58 037717 (Hitachi Seisakusho KK).

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