Traction elevator back-up power system with inverter timing
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United States of America Patent
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Oct 2, 2007
Grant Date -
Jan 13, 2005
app pub date -
May 13, 2004
filing date -
May 15, 2003
priority date (Note) -
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Abstract
A back-up power system for a traction elevator includes a power sensing device to sense a power loss or irregularity of the normal control power. An inverter timing system is connected to the power loss sensing device. The inverter timing system receives a power sensing signal from the power sensing device. A back-up power generating system communicates with the inverter timing system and generates an output to provide back-up power to the elevator system.
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