Uninterruptible power supply system

Details Uninterruptible power supply system Uninterruptible power supply system

1986-03-10

1988-03-01

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 64, H02J 906

Patent

active

047288086

ABSTRACT:
An uninterruptible power supply system having input terminals connectable to an AC power source and leading to an AC to DC converter for producing a first DC voltage source and a second DC voltage source operationally connected to the first source. The system supplying at the output of the second source a voltage normally primarily provided by the first DC source. A capacitive accumulator device connected in parallel with a voltage sensing and controlling circuit and with the output of the two DC sources. The sensing and controlling circuit controlling the output of at least the second of the DC voltage sources so as to provide at the output terminals of the system a substantially constant output voltage also when the AC power source to which the system is connected in interrupted.

REFERENCES:
patent: 4220872 (1980-09-01), Fahey
patent: 4225792 (1980-09-01), Fahey
patent: 4298926 (1981-11-01), Black
patent: 4488057 (1984-12-01), Clarke
patent: 4560886 (1985-12-01), Ferguson

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