Power supply method of a line interactive UPS and the line...

Details Power supply method of a line interactive UPS and the line... Power supply method of a line interactive UPS and the line...

2006-11-28

2006-11-28

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C307S045000, C307S044000, C307S064000, C307S043000, C307S070000, C307S080000, C307S087000, C307S042000, C323S259000

Reexamination Certificate

active

07141892

ABSTRACT:
A power supply method and apparatus of a line interactive UPS utilizes a bi-directional AC/AC power converter in association with the AC delta control concept. When the line voltage coupled to the AC/AC power convert exceeds high/low statuses, the UPS is operated in a line voltage conversion mode, wherein the AC/AC power converter supplies a voltage to compensated the line voltage based on the stability of the line voltage, and then the compensated stable voltage is further provided to the load so as to perform the voltage boost (step-up) and/or voltage buck (step-down).

REFERENCES:
patent: 4763013 (1988-08-01), Gvoth, Jr. et al.
patent: 5329222 (1994-07-01), Gyugyi et al.
patent: 5612580 (1997-03-01), Janonis et al.
patent: 6201371 (2001-03-01), Kawabe et al.
patent: 2002/0011752 (2002-01-01), Powell et al.
patent: 2002/0153779 (2002-10-01), Wade et al.

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