Inverter modulator with variable switching frequency
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United States of America Patent
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Jan 7, 2014
Grant Date -
Nov 12, 2009
app pub date -
May 9, 2008
filing date -
May 9, 2008
priority date (Note) -
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Abstract
An inverter control is used to control the output of a distributed power generating station, such as a photovoltaic (PV) solar power station, connected to a power grid. The power station is connected to an inverter output. Pulse width modulation is used to shape the output in order to maximize power output within power quality parameters and provides control of a switching frequency of the inverter responsive to a sensed parameter. The technique allows an increase in output efficiency and provides for adjustment of power output to meet power quality parameters to an extent required in order to connect to the power grid.
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