Wide bandwidth AC-DC power converter
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United States of America Patent
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Aug 1, 2006
Grant Date -
Jun 2, 2005
app pub date -
Mar 18, 2003
filing date -
Mar 18, 2002
priority date (Note) -
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Abstract
The invention provides a wide bandwidth power converter. In one application the invention is useful for AC to DC power conversion from a polyphase power supply with high line impedances and includes a single stage low bandwidth AC to DC power converter providing a DC output and, a filter means for the DC output including a bidirectional shunt active filter having an energy storage element and circuitry for wide bandwidth control of fluctuations at the DC output, arising from line borne or load induced disturbances, by transferring energy to or from the energy storage element. The transferred energy is low level relative to the magnitude of the AC to DC converter output energy enabling the size of the energy storage element to be minimized.
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