Modelling power flow in a hoist motor of a Rubber Tyred Gantry crane

Stefano Pietrosanti, William Holderbaum, Victor Becerra

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    A method for calculating the power demand of the hoist motor in Rubber-Tyred Gantry (RTG) cranes has been developed in order to measure the energy consumption in a typical lift cycle. From measurements taken at the Port of Felixstowe it has been observed that the peculiar geometrical characteristics of the hoisting mechanism causes the power demand to increase with the container height in constant speed conditions. By using information extracted from the crane's schematics and trigonometry it has been possible to calculate the potential energy increase given the weight and vertical position of the container. In addition, the torque load on the hoist motor and the vertical speed of the mass have been calculated, allowing for the modelling of the hoist motor power consumption when lifting containers with constant rotational speed.
    Original languageEnglish
    Title of host publication2015 IEEE Industry Application Society Annual Meeting
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)978-1-4799-8394-0
    ISBN (Print)978-1479983957
    Publication statusPublished - Jan 2016
    Event2015 IEEE Industry Applications Society Annual Meeting - Addison, United States
    Duration: 18 Oct 201522 Oct 2015


    Conference2015 IEEE Industry Applications Society Annual Meeting
    Country/TerritoryUnited States


    • load flow analysis
    • load modeling
    • mathematical model
    • mechanical systems
    • power system modeling
    • containers
    • torque
    • cranes
    • induction motors
    • approximation methods
    • power demand


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