Uninterrupted power supply system having improved power factor c

Details Uninterrupted power supply system having improved power factor c Uninterrupted power supply system having improved power factor c

1989-11-09

1990-12-25

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 37, 363 89, 363126, H02M 3335

Patent

active

049808125

ABSTRACT:
An uninterrupted power supply (UPS) system is provided with a power factor correction circuit. The UPS system includes a rectifier having input terminals for connection to an AC utility power source and output terminals. The power factor correction circuit is operatively connected to the input and output terminals of the rectifier to cause the UPS system to exhibit substantially unity power factor to the AC utility power source.

REFERENCES:
patent: 4193111 (1980-03-01), Wester
patent: 4412277 (1983-10-01), Mitchell
patent: 4437146 (1984-03-01), Carpenter
patent: 4472672 (1984-09-01), Pacholok
patent: 4533986 (1985-08-01), Jones
patent: 4661764 (1987-04-01), Mostyn et al.
patent: 4677366 (1987-06-01), Wilkinson et al.
patent: 4683529 (1987-07-01), Bucher, II
patent: 4825351 (1989-04-01), Uesugi
patent: 4831508 (1989-05-01), Hunter
PP. 3-346 through 3-352 of Motorola Linear/Interface Devices Databook.
Article entitled "IC Produces 0.99 Power Factor In-Office Power Supplies", Powertechnics Magazine, Jun. 1989, p. 17.
Article entitled "PWM Controller Chip Fixes Power Factor", Goodenough, Frank, Electronic Design Magazine, Jun., 1989, pp. 81-84.
S. D. Freeland, Input Current Shaped AC-to -DC Converters, Final Report prepared for NASA Lewis Research Center under Grant No. NAG. 3-615, May 1986, by the Power Electronics Group, California Instit. of Tech.

Affiliated with

Also associated with

Rating

Uninterrupted power supply system having improved power factor c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Uninterrupted power supply system having improved power factor c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uninterrupted power supply system having improved power factor c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1167873