ARC WELDER WITH VARIABLE-FREQUENCY AUXILIARY POWER OUTPUT
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United States of America
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Sep 14, 2017
app pub date -
Mar 11, 2016
filing date -
Mar 11, 2016
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Abstract
An arc welding system includes a welding power supply having a switching type power converter. A welding electrode is connected to the switching type power converter to receive electrical energy therefrom and produce an electric arc. A variable-frequency auxiliary power supply supplies electrical energy to an auxiliary load through an auxiliary power output of the arc welding system. An engine-generator is connected to the welding power supply and the variable-frequency auxiliary power supply, to supply electrical energy to the welding power supply to produce the arc, and to supply further electrical energy to the variable-frequency auxiliary power supply. A controller is operatively connected to the variable-frequency auxiliary power supply and is configured to control an output voltage frequency of the variable-frequency auxiliary power supply according to an auxiliary power supply frequency setting. The output voltage frequency of the variable-frequency auxiliary power supply is independent from engine speed of the engine-generator.
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