Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1998-06-05
2000-03-28
Berhane, Adolf Deneke
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
363 60, G05F 156, H02M 318
Patent
active
060436336
ABSTRACT:
A method and apparatus for controlling a boost converter, which offers improved power factor correction by compensating for the distorting effects of parasitic capacitance and parasitic oscillations. By precise adjustments to the closing time of the boost switch, the effects of parasitic capacitance can be reduced or eliminated. A zero current detector capable of detecting both forward and reverse zero current points facilitates the compensation. The method and circuit of the present invention are well-suited to integration with an inexpensive digital controller such as a microprocessor, and a method of dithering to enhance the time resolution of clocked digital circuits is presented.
REFERENCES:
patent: 5359274 (1994-10-01), Bandel
patent: 5594323 (1997-01-01), Herfurth et al.
patent: 5614811 (1997-03-01), Sagalovich et al.
patent: 5757635 (1998-05-01), Seong
Andreycak, B., "Power Factor Correction Using the UC3852 Controlled On-Time Zero Current Switching Tecxnique", Unitrode Application Note, pp 10-269-10-275, no futher information given.
Alberkrack et al, "An Economical Controller Corrects Power Factor", Power Conversion, pp 322-329, Sep. 1992 Proceedings.
Kalichstein Moshe
Lev Arie
Rubin Daniel
Sharaby Yoel
Berhane Adolf Deneke
Friedman Mark M.
International Rectifier Corp.
Systel Development & Industries
LandOfFree
Power factor correction method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power factor correction method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power factor correction method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1328779