Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1982-08-09
1984-09-11
Hartary, Joseph W.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 87, H02J 702, H02J 906
Patent
active
044712332
ABSTRACT:
A motor generator set that is used to provide clean, noise-free power to a load, such as a computer, is upgraded to a complete uninterruptible power supply by the addition of a logic controlled, battery powered inverter that is readily connected in the main power supply line to the motor generator. The emergency power inverter operates only when normal utility power fails, and employs the ability of the motor generator set to handle brief power outages to power the load for the brief time needed to decouple the main line power supply and couple the inverter to the motor generator. An oscillator that clocks trigger pulses for the inverter tracks motor voltage frequency and phase until power is supplied to the motor from the standby inverter. Switching to the emergency power inverter is accomplished by detecting both reverse power and zero current.
REFERENCES:
patent: 539019 (1895-05-01), Chamberlain
patent: 2194822 (1940-03-01), Dannheiser
patent: 2725489 (1955-11-01), Van Weynsbergen et al.
patent: 3050635 (1962-08-01), Tanner
patent: 3178632 (1965-04-01), Woodson et al.
patent: 3243598 (1966-03-01), Grillo
patent: 3514625 (1970-05-01), Lane
patent: 3665495 (1972-05-01), Carter et al.
patent: 3986098 (1976-10-01), Tamii et al.
patent: 4104539 (1978-08-01), Hase
patent: 4167680 (1979-09-01), Gross
patent: 4203041 (1980-05-01), Sachs
De Boer Todd E.
Emergency Power Engineering, Inc.
Hartary Joseph W.
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