Voltage regulator for AC single phase and three phase systems
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United States of America Patent
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Jan 23, 1990
Grant Date -
N/A
app pub date -
Oct 12, 1988
filing date -
Oct 12, 1988
priority date (Note) -
Expired
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Abstract
A voltage regulator for AC single phase and three phase systems. An output voltage is controlled by controlling a preset stepped addition to or subtraction from the input voltage. The controlled addition or subtraction is performed by a series injection transformer whose secondary is in series with the input voltage and whose primary is controlled by a microprocessor based switch matrix. The switch matrix imposes various voltage levels and phasing on the primary winding so as to produce a regulated system output voltage.
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