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Patent Searching and Data


Title:
DRIVE DEVICE, CRANE, AND DRIVE DEVICE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2016/125267
Kind Code:
A1
Abstract:
A drive device is provided with: a plurality of main motors, the sum of the rated capacities of which is set to the capacity corresponding to a load and which are used for performing the main operation in cooperation therewith; one or a plurality of main inverters, the sum of the rated capacities of which is set to the capacity corresponding to the rated capacity of each of the main motors, and connected to each of the main motors; and a control device for controlling the main inverters. When driving all the main motors, the control device controls the main inverters connected to each of the main motors so that each of the main motors is driven at a rated rotational speed. When a part of the main motors fails, the control device reduces the rotational speed of each of the remaining main motors, reduces the load, and controls the main inverters so that the output of each of the remaining main motors becomes the same capacity as that set before the rotational speed is reduced.

Inventors:
FUJISAWA Noboru (6-22 Kan-on-Shin-machi 4-chome, Nishi-ku, Hiroshima-sh, Hiroshima 53, 〒7338553, JP)
ISHII Yoshitaka (6-22 Kan-on-Shin-machi 4-chome, Nishi-ku, Hiroshima-sh, Hiroshima 53, 〒7338553, JP)
Application Number:
JP2015/053099
Publication Date:
August 11, 2016
Filing Date:
February 04, 2015
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES MATERIAL HANDLING SYSTEMS CO., LTD. (8-6 Nishishimbashi 2-chome, Minato-ku Tokyo, 03, 〒1050003, JP)
International Classes:
H02P5/74; B66C13/22
Domestic Patent References:
WO2013128713A12013-09-06
Foreign References:
JP2000238989A2000-09-05
JP2010041890A2010-02-18
JP2001163579A2001-06-19
Attorney, Agent or Firm:
MORI Ryuichirou et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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