Elevator control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 8, 2002
Grant Date -
Aug 30, 2001
app pub date -
Jan 30, 2001
filing date -
Feb 28, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An elevator control apparatus includes a power storage unit for storing the DC power; a charge/discharge control circuit that controls a state of charge of the power storage unit, outputs a drive signal to charge the power storage unit with the DC power during a halt of the elevator based on operational information regarding the elevator received from the controller, and outputs a stop signal to stop charging when a voltage of the power storage unit reaches a preset voltage; and a charge/discharge circuit for starting charging the power storage unit with the DC power in response to the drive signal, and stopping the charging in response to the stop signal. This arrangement ensures landing of the elevator in case of a power failure, eliminates a peak in power consumption, and permits energy saving by effectively using power produced in a regenerative mode of the elevator.
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