Regulator with asymmetrical voltage increase/decrease capability for utility system
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Oct 24, 1997
filing date -
Oct 24, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A regulator is provided for establishing asymmetrical voltage increase/decrease capability between an input node and an output node for enhanced regulation of either a voltage sag or a voltage swell within a utility system. The regulator includes an autotransformer having an input tap coupled to the input node of the regulator and an output tap coupled to the output node. The regulator further includes an electronic tap changer system coupled to the winding of the autotransformer. Together, the autotransformer and the electronic tap changer system provide the regulator with its asymmetrical voltage increase/decrease capability between the input node and the output node thereof. The regulator can be configured for voltage increase only, voltage decrease only, or both, provided an asymmetrical voltage increase/decrease capability is defined.
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