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Patent Searching and Data


Title:
METHOD FOR OPERATING WINCH AND ELECTRIC DRIVE FOR DRIVING WINCH
Document Type and Number:
Japanese Patent JP2019162024
Kind Code:
A
Abstract:
To provide an electric drive which reduces such a possibility that power electronic components, such as controllable semiconductor switches and diodes, of the electric drive may have high electric currents flowing therethrough and an overload is applied to the components.SOLUTION: There are provided a method for operating a winch and an electric drive for driving a winch, the winch including a rotatable winch drum (20) for spooling a spoolable medium (10) and an electric motor (30) operably coupled to the winch drum. Electric drives (40, 41) are configured to drive the winch drum (20) by driving the electric motor (30) such that a tension of the spoolable medium (10) reaches a predetermined tension set point value or value range, set a driving speed of the electric motor (30) to zero, and after the setting of the driving speed of the electric motor (30) to zero, drive the electric motor (30) to alternate directions of rotation at predetermined driving speeds such that the direction of rotation is changed at a predetermined frequency.SELECTED DRAWING: Figure 1

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Inventors:
HOLMBERG MIKAEL
KJELL INGMAN
MICHAEL RODAS
Application Number:
JP2019044400A
Publication Date:
September 19, 2019
Filing Date:
March 12, 2019
Export Citation:
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Assignee:
ABB SCHWEIZ AG
International Classes:
H02P3/06; B63B21/16; B66D1/12; B66D1/46
Attorney, Agent or Firm:
Asamura patent office