Title:
ELEVATOR CONTROL DEVICE AND ELEVATOR CONTROL METHOD
Document Type and Number:
Japanese Patent JP2016104660
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent unnecessary emergency stop of an elevator, resulting from a voltage decrease in AC commercial power source.SOLUTION: An elevator control device comprises: a control unit that controls drive of a motor that lifts or lowers an elevator car on the basis of a three-phase AC power source supplied from outside; a first circuit connected to the three-phase AC power source side and configured to restrict harmonic wave in the three-phase AC power source; a second circuit connected to the secondary side of the first circuit and configured to rectify the three-phase AC power source, thereby outputting energy required for the motor, via a third circuit that controls the motor; and a control unit configured such that when voltage of the three-phase AC power source output from the first circuit is equal to or lower than a first threshold value, the operation of the car is controlled in accordance with the result of a comparison between a second threshold value and energy of AC power source after the three-phase AC power source output from the second circuit is rectified.SELECTED DRAWING: Figure 1
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Inventors:
TOYABE JUN
MARUOKA YASUSHI
YAMAZAKI DAISEI
NAGANUMA KAZUTO
MATSUMOTO KEIJI
MARUOKA YASUSHI
YAMAZAKI DAISEI
NAGANUMA KAZUTO
MATSUMOTO KEIJI
Application Number:
JP2014243142A
Publication Date:
June 09, 2016
Filing Date:
December 01, 2014
Export Citation:
Assignee:
HITACHI LTD
HITACHI BUILDING SYST CO LTD
HITACHI BUILDING SYST CO LTD
International Classes:
B66B1/06
Domestic Patent References:
| JP2010168139A | 2010-08-05 | |||
| JP2005278224A | 2005-10-06 | |||
| JP2010168139A | 2010-08-05 | |||
| JP2005278224A | 2005-10-06 |
Attorney, Agent or Firm:
Shinji Oga
Hiroyuki Hyakumoto
Hiroyuki Hyakumoto