DC power source, and DC power source control method
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United States of America Patent
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Sep 20, 2016
Grant Date -
Jul 14, 2016
app pub date -
Dec 26, 2013
filing date -
Sep 27, 2013
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Abstract
A DC power source to supply DC power to a plasma generator is configured as a simple and small-sized device that forms high voltage for generating a plasma discharge. A step of passing a short-circuit current for extremely short time through the voltage source step-down chopper provided in the DC power source and accumulating energy in a reactor is performed repeatedly more than once, so as to discharge the energy accumulated in the reactor to the output capacitance and raise the output voltage sequentially, thereby boosting the voltage up to the ignition set voltage. The short-circuit current is formed by a switching element of a boosting circuit provided in the DC power source. Boosting the voltage at the output terminal by accumulating and discharging the short-circuit current is repeated to raise the voltage at the output terminal of the DC power source up to the ignition set voltage.
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