Specifications

40 ROCPOWER ‐ ROCWAVEusermanual
CHAPTER7

HOWTHEUPSWORKS
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UPSSystemBlockDiagram
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Fig1
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TheaboveillustratestheTrueOn‐LineDoubleConversionarchitectureoftheUPSsystem.The
majormodulesconsistof:
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1)AnACtoDCpowerconverter(Rectifier)withPFCcontrolcircuit
2)ADCtoAChighfrequencypowerinverter
3)AnIntelligentBatteryCharger
4)Abankofstationarymaintenance‐freebatteries
5)ADCtoDCpush/pullconvertercontrolcircuit
6)AStaticBypassLoop
7)Input&OutputEMIFilters
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ThetablebelowprovidesaSummaryGuideoftheUtilityConditions,UPSOperatingModesand
theLEDDisplayIndications.
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