Fast Restart Of Flywheel In Uninterruptible Power Supply System Having Flywheel System/Battery Combination
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United States of America Patent
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Issued Date -
Dec 8, 2016
app pub date -
Apr 29, 2016
filing date -
Jun 5, 2015
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Abstract
An uninterruptible power supply system has a flywheel system/battery combination as a source of back-up DC power. When power is restored after a power outage, a controller of the uninterruptible power supply system controls the rectifier to keep its DC output voltage sufficiently low so that only the flywheel system of the flywheel system/battery combination is initially recharged. Once the flywheel system is recharged, the controller is configured to raise the voltage of the rectifier's DC output voltage to the nominal DC output voltage of the rectifier, both for recharging the battery pack of the flywheel system/battery combination and to provide DC power to an inverter of the uninterruptible power supply system.
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