Double discharge circuit for improving the power factor

Details Double discharge circuit for improving the power factor Double discharge circuit for improving the power factor

1997-03-27

1998-10-27

Berhane, Adolf

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363126, 320166, H02M 706

Patent

active

058285628

ABSTRACT:
The present invention relates to a device for improving the power factor of a rectifying bridge supplied by an a.c. voltage and meant to issue a rectified d.c. supply, including two capacitors mounted in series and having different values, a first charge path essentially meant for a first capacitor, a second switchable charge path and exclusively meant for a second capacitor with a value higher than the value of the first capacitor, a first switchable discharge path and essentially meant for the first capacitor, and a second discharge path exclusively meant for the second capacitor.

REFERENCES:
patent: 4432034 (1984-02-01), Wohlert et al.
patent: 4801887 (1989-01-01), Wegener
patent: 4926354 (1990-05-01), Pattantyus
patent: 5581454 (1996-12-01), Collins
patent: 5646502 (1997-07-01), Johnson
Proceedings of the Annual Applied Power Electronics Conference and Exposition, (APEC), Los Angeles, Mar. 11-16, 1990, no. CONF, 5, Mar. 11, 1990, Institute Of Electrical And Electronics Engineers, pp. 672-680, Ghiara T., et al., "High Power Factor Control System in Multilevel Converters For AC Heavy Traction Drives".
I.E.E. Proceedings: Generation, Transmission and Distribution, vol. 142, No. 2, Mar. 1, 1995, pp. 202-210, Ekanavake J., et al., "Experimental Investigation of an Advanced Static Var Compensator".
Conference Record Of The Industry Applications Conference IAS Annual Meeting, Toronto, Oct. 3-8, 1993, Institute of Electrical and Electronics Engineers, pp. 901-908, Choi N.S., et al., "Modeling And Analysis of a Static Var Compensator Using Multilevel Voltage Source Inverter".

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