Standby power supply system having a variable frequency inverter

Details Standby power supply system having a variable frequency inverter Standby power supply system having a variable frequency inverter

1993-09-08

1994-11-29

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 49, H02M 5458

Patent

active

053695615

ABSTRACT:
A standby power supply system is provided which prevents saturation of magnetic components thereof during its initial start-up. The power supply system includes a variable frequency inverter that is responsive to control signals for generating an initial frequency which is higher than the frequency of the utility line voltage and which is swept down gradually to the frequency of the line voltage when a detected logic signal is at the low logic level.

REFERENCES:
patent: 4780805 (1988-10-01), Chewuk et al.
patent: 4928218 (1990-05-01), Kluttz
patent: 5032970 (1991-07-01), Telefus
patent: 5212360 (1993-05-01), Carlson
"Principles of Solid-State Power Conversion," pp. 565-566, 578-583, by Ralph E. Tarter, Howard W. Sams & Co., 1985.
"The Theory and Practice of Overcurrent Protection," pp. 7-8, 50 and 140, by Patrick J. McCleer, Mechanical Products Inc., 1987.
"The Art of Electronics," pp. 286-290, 507-510, by Paul Horowitz, Cambridge University Press, 2nd Edition, 1989.

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