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Patent Searching and Data


Title:
ELEVATOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/108270
Kind Code:
A1
Abstract:
An elevator control device includes: a rectification circuit (2) for rectifying AC power; a smoothing capacitor (3) for smoothing rectification output; an inverter (4) for converting the DC power into AC power; a motor (11) for operating a cage (14) by driving it by the AC power from the inverter; a drive control unit (5) for controlling the inverter according to the operation pattern; charge/discharge control units (34, 38) for judging whether the power is in the regenerative operation or in the powering operation, accumulating the regenerative power energy in the accumulation device (35), and discharging the power energy to the smoothing capacitor during powering operation of the motor; a backup capacitor (31) having a large capacitance as compared to the smoothing capacitor; and running control units (34, 38) for discharging power energy of the capacitor (31) to the smoothing capacitor for backup of operation/running of the cage when AC power supply has stopped and controlling the charge/discharge control unit so that the power energy of the accumulation device is discharged to the smoothing capacitor when an AC power source power supply stop detection signal is received.

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Inventors:
TAKASAKI KAZUHIKO (JP)
MATSUOKA HIROAKI (JP)
Application Number:
PCT/JP2005/008626
Publication Date:
November 17, 2005
Filing Date:
May 11, 2005
Export Citation:
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Assignee:
TOSHIBA ELEVATOR KK (JP)
TAKASAKI KAZUHIKO (JP)
MATSUOKA HIROAKI (JP)
International Classes:
B66B1/34; B66B1/30; B66B5/02; (IPC1-7): B66B1/34; B66B5/02
Foreign References:
JPH04117882U1992-10-21
JPH07232872A1995-09-05
JP2001019310A2001-01-23
Attorney, Agent or Firm:
Suzuye, Takehiko c/o SUZUYE & SUZUYE (1-12-9 Toranomo, Minato-ku Tokyo, JP)
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