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Patent Searching and Data


Title:
ELEVATOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2013039996
Kind Code:
A
Abstract:

To provide an elevator control device capable of performing a rescue operation of a car to the nearest floor while suppressing power consumption of an emergency battery power supply during power failure.

This elevator control device comprises a motor winding short-circuiting means 13 for short-circuiting a winding of a permanent magnet motor 4. During power failure, only when a load of a car 8 calculated by a load calculation part 11 is ≥40% and ≤60%, a control part 1 performs control processing for actuating the motor winding short-circuiting means 13 so that the winding of the permanent magnet motor 4 is short-circuited, opening the electromagnetic brake 6, detecting an operation direction of the car 8, thereafter actuating the motor winding short-circuiting means 13 so that the short circuit of the winding of the permanent magnet motor 4 is opened, and driving the permanent magnet motor 4 so that it is in the operation direction detected by the operation direction detecting means 14 of the car 8 in this state.


Inventors:
ATSUZAWA TERUYOSHI
Application Number:
JP2011000176957
Publication Date:
February 28, 2013
Filing Date:
August 12, 2011
Export Citation:
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Assignee:
HITACHI BUILDING SYS CO LTD
International Classes:
B66B5/02; B66B1/34; H02P3/26
Domestic Patent References:
JPS5738280A1982-03-02
Foreign References:
WO2011002477A12011-01-06
Attorney, Agent or Firm:
特許業務法人 武和国際特許事務所