Control Scheme of Voltage Sag Compensator Using Bi-Directional
Abstract — A novel voltage sag compensator with Bi-directionalDC/DCconverterofdouble-layercapacitoris
proposed.Recently,thedouble-layercapacitorwhichhas
drawn attention as a new energy storage element has a lot of
advantage such as no maintenance, long lifetime, and quick
charge/dischargecharacteristicswithlargecurrent.This
capacitorisattachedtotheDClinkofvoltagesag
compensatorsystemthroughthehigh-efficiencyDC/DC
converter in order to compensate the DC link voltage drop
during short-term power interruption as voltage sags.
ThisDC/DCconverterisusedtocontrolthecharging
current to the double-layer capacitor and also used to keep the
DC linkvoltageconstantfordischarge of the double-layer
capacitor. Therefore, the proposed DC/DC converter has the
high-efficiencycontroller,dynamiccompensatorofvoltage
sagisdrivenbythisconverter.Finally,simulationand
experimental results show the validity of the control scheme
and the ability of the voltage compensator. 太高深了，看不明白
[ 本帖最后由 hypo_qu 于 2008-11-20 15:03 编辑 ]
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