POWER CONVERTER AND METHOD FOR CONTROLLING POWER CONVERTER
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United States of America Patent
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Issued Date -
Sep 2, 2010
app pub date -
Jan 29, 2010
filing date -
Jan 29, 2009
priority date (Note) -
Abandoned
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Abstract
The invention prevents the voltage change ratio of switching devices of a power converter from exceeding a specified maximum rating, thus avoiding damage in switching devices and an increase in conduction loss. In a power converter having a plurality of switching devices, switching means for switching a control scheme for the switching devices to a phase shift control scheme or a pulse width modulation scheme is provided, whereby the control scheme for the switching devices is switched from the phase shift control scheme to the pulse width modulation scheme in a non-load or light-load state.
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