Electrical power regulator

Details Electrical power regulator Electrical power regulator

1997-11-06

1999-06-22

Nguyen, Matthew

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

G05F 156

Patent

active

059145900

ABSTRACT:
Electrical power apparatus is disclosed for selectively powering either a three-phase ac motor or a single-phase ac motor. A dc/ac inverter is configured to provide appropriately phased input signals to the three input terminals of whichever motor is being driven, with no substantial hardware reconfiguration being required. In addition, a special clamp circuit prevents an excessively high voltage from being applied to the inverter by a variable-voltage power source such as a photovoltaic array, whereby the inverter need not be sized to accommodate voltage levels substantially greater than its design voltage.

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patent: 4437148 (1984-03-01), Suranyi
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patent: 4849871 (1989-07-01), Wallingford
patent: 5105141 (1992-04-01), Ernest
patent: 5168439 (1992-12-01), Kumar et al.
patent: 5504418 (1996-04-01), Ashley

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