Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1989-03-27
1989-10-24
Wong, Peter S.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 86, 363 37, 363 39, H02J 906, H02M 545
Patent
active
048764604
ABSTRACT:
A continuous uninterrupted power supply (UPS) having microprocessor control DC circuitry is disclosed. The UPS comprises a regulator for converting an AC line signal to a regulated DC signal. The regulator may include an AC/DC converter connected to an AC input line for converting the AC input signal for generating a DC signal from an AC input signal. A filter circuit is provided within the regulator for filtering the converted DC signal. A backup DC source and a series diode are also provided within the regulator for connecting a backup source to the converted DC signal when the DC signal is less than a predetermined signal level. A DC/DC converter is provided within the regulator for controlling the converted DC signal level. A DC/AC converter is connected to the regulator for receiving the regulated DC signal and generating an output AC signal therefrom. A microprocessor controller regulates the operation of the DC/AC converter. The microprocessor controller is connected to the DC/AC converter by means of a plurality of control line pairs, each control line pair including an unfiltered control line and a return line disposed proximate thereto.
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patent: 4827151 (1989-05-01), Okado
Intellipower, Inc.
Wong Peter S.
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