PHOTOVOLTAIC POWER SOURCE FOR ELECTROMECHANICAL SYSTEM
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United States of America Patent
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Issued Date -
Jul 26, 2012
app pub date -
Jan 24, 2011
filing date -
Jan 24, 2011
priority date (Note) -
Abandoned
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Abstract
An enclosure or shelter having an HVAC/R system is configured with a photovoltaic power source and a rechargeable DC power source for power back-up to maintain substantially uninterrupted power in the case of a main power failure. The system includes one or more variable frequency drives (VFD) controlled by a VFD controller and configured to provide three-phase power to one or more three-phase AC motors and single-phase power to one or more single-phase AC motors. The system also includes a power source controller configured to select power sources based on availability of one or more power sources and other logic.
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