Inverter for converting direct current power into alternating current power and direct current bus voltage regulating method thereof and application using the same
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United States of America Patent
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Mar 15, 2016
Grant Date -
Mar 12, 2015
app pub date -
Aug 29, 2014
filing date -
Sep 9, 2013
priority date (Note) -
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Abstract
An inverter and a direct current (DC) bus voltage regulating method thereof are provided. The inverter includes a resonant conversion circuit, an inverting circuit, a first control circuit and a second control circuit. The resonant conversion circuit receives a DC input voltage and converts the same into a DC bus voltage. The inverting circuit couples to the resonant conversion circuit, and configured to convert the DC bus voltage into an AC output voltage. The first control circuit is configured to control operations of the resonant conversion circuit, where the first control circuit calculates a best working voltage of the resonant conversion circuit based on the DC input voltage and a resonant frequency of the resonant conversion circuit. The second control circuit controls operations of the inverting circuit, where the second control circuit receives the best working voltage calculated by the first control circuit and regulates the DC bus voltage accordingly.
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