Title:
EMERGENCY OPERATING DEVICE OF ELEVATOR
Document Type and Number:
Japanese Patent JP2838082
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the reliability by preventing the speed deterioration of an elevator owing to a low voltage of a battery, without carrying out an overvoltage suppression which is complicated and of a low reliability.
SOLUTION: This control device is composed to furnish a converter 200; the first inverter 201; a control circuit 202; and the first three-phase transformer 203. In this case, the second inverter 204; a battery 205; and the second three- phase transformer 206 connected between the first three-phase transformer 203 and the second inverter 204; are provided, and the output AC voltage of the second inverter 204 is to be fed to the input end of the converter 200.
Inventors:
HARE JAE YAN
Application Number:
JP29228097A
Publication Date:
December 16, 1998
Filing Date:
October 24, 1997
Export Citation:
Assignee:
ERU JII SANDEN KK
International Classes:
B66B5/02; B66B1/30; B66B5/00; (IPC1-7): B66B1/30; B66B5/02
Domestic Patent References:
| JP551182A | ||||
| JP6013475A | ||||
| JP64314B2 |
Attorney, Agent or Firm:
Takashi Ishida (3 others)
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