A computer implemented diagnostics system (200, 300) for a marine propeller drive unit (110), where the propeller drive unit (110) is a self-balancing drive unit comprising a differential arrangement (230) arranged to distribute a drive torque (T) from an electric machine (210) between at least two propellers (131, 132) of the propeller system (130),the diagnostics system (200, 300) comprising processing circuitry (240) connected to a speed sensor system (250, 315, 325, 335) and to a control unit (215) associated with the electric machine (210),where the speed sensor system (250, 315, 325, 335) is arranged in connection to the differential arrangement (230) to provide propeller speed data to the processing circuitry (240) indicative of a speed of rotation (ω1, ω2) of at least one of the propeller axles (260, 270) of the self-balancing propeller drive unit (110),where the control unit (215) is arranged to provide motor current data to the processing circuitry (240) indicative of a motor current drawn by the electric machine (210),where the processing circuitry (240) is arranged to monitor the motor current data from the control unit (215), and the propeller speed data from the speed sensor system (250, 315, 325, 335), and to classify a state of the self-balancing propeller drive unit (110) into a predetermined number of states comprising one or more fault states, based on the motor current data and on the propeller speed data,where the processing circuitry (240) is arranged to trigger an action by the diagnostics system (200, 300) in case the state of the self-balancing propeller drive unit (110) is classified as a fault state.


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    Title :

    A DIAGNOSTICS SYSTEM FOR A DUAL PROPELLER DRIVE UNIT


    Additional title:

    DIAGNOSESYSTEM FÜR EINE DOPPELPROPELLERANTRIEBSEINHEIT
    SYSTÈME DE DIAGNOSTIC POUR UNE UNITÉ D'ENTRAÎNEMENT À DOUBLE HÉLICE


    Contributors:
    BRAUER SAMUEL (author) / WIK LARS (author) / TELL JOHAN (author)

    Publication date :

    2024-07-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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