PRECHARGE APPARATUS FOR POWER CONVERSION SYSTEM
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United States of America Patent
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app pub date -
Jun 2, 2016
filing date -
Jun 2, 2016
priority date (Note) -
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Abstract
Power conversion systems, methods and precharge systems are disclosed to charge a DC bus capacitor, including thyristors and reverse diodes coupled in AC circuit paths between AC input lines and a rectifier, a precharge resistor coupled in one or more of the AC circuit paths, and a controller to turn all the thyristors off to allow the DC bus capacitor to charge through the precharge resistor, and to turn all the thyristors on when the DC bus voltage reaches a non-zero threshold value.
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