Controller for variable speed alternating current motor
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United States of America Patent
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-
Mar 8, 2011
Grant Date -
May 29, 2008
app pub date -
May 26, 2005
filing date -
May 26, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A controller for operating a variable speed alternating current motor using inverters to which power is supplied from two or more power supplies including an energy accumulator has a first inverter for converting direct current supplied from the outside into alternating current, a power supply for accumulating direct current, a second inverter for converting direct current supplied from the power supply into alternating current, and an adder for adding the alternating current voltages outputted from the first and second inverters.
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