METHOD AND APPARATUS FOR SYNCHRONIZATION OF ACTIONS IN A PARALLEL UPS SYSTEM USING A SERIAL COMMUNICATIONS BUS
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Jul 5, 2007
filing date -
Jul 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A serial communications bus is utilized to send key action data between parallel UPS units. The communications bus is used to transmit data at the zero crossing of the critical bus voltage. Each UPS unit then takes action based upon the event data received at the next zero crossing of the critical bus voltage.
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