Method of operating an inverter by turning off the switching at a zero transition of the alternating output current
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United States of America Patent
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Jan 22, 2013
Grant Date -
May 3, 2012
app pub date -
Jan 10, 2012
filing date -
Oct 19, 2007
priority date (Note) -
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Abstract
A method of operating an inverter for converting direct voltage into alternating voltage. The inverter has direct-voltage terminals and alternating-voltage terminals and a plurality of power switching elements that are clocked at high-frequency connected between the d.c. and a.c. terminals. The high-frequency clocking of the power switching elements of the inverter is switched off around a zero transition of the alternating current or the alternating voltage for a period which depends on the direct voltage present at the direct-voltage terminals of the inverter and/or the output power of the inverter. No current is generated during time intervals with a poor efficiency.
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