Three level inverter
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United States of America Patent
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Jan 4, 2005
Grant Date -
N/A
app pub date -
Oct 7, 2003
filing date -
Oct 7, 2003
priority date (Note) -
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Abstract
The present invention relates to a high efficiency three-level inverter apparatus containing both bipolar and field effect transistors. An embodiment of a modified control scheme is also presented whereby transistors are modulated differently for each quadrant of output voltage-current phase. This embodiment of a modified control scheme allows efficient switching of field effect transistors without additional freewheeling and series diodes.
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