A method of operating a marine vessel hydro-generator system comprises receiving a signal indicative of a flow rate of fluid over a turbine 31 and a signal indicative of a position of a pressure compensated flow regulation valve 39 which controls flow of hydraulic fluid through a first path from a hydraulic pump 33. An instantaneous extracted power from the turbine, an instantaneous power capacity based at least in part on the flow rate of fluid over the turbine and a turbine geometry are determined. An instantaneous available power based at least in part on a variable induced drag factor and the instantaneous power capacity is determined, the induced drag factor representing a ratio of the instantaneous extracted power to the instantaneous power capacity. A signal is received indicative of an instantaneous output voltage of a permanent magnet generator 314 connected to a hydraulic motor 216 in a second path of hydraulic fluid from the pump, and the instantaneous output voltage is compared to a voltage limit of the permanent magnet generator. If the instantaneous output voltage is lower than the voltage limit and the instantaneous extracted power does not exceed the instantaneous available power, the position of the valve is rotated in a first direction by a predetermined amount. If the instantaneous output voltage exceeds the voltage limit, the valve is rotated in a second, opposite direction by a predetermined amount.


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    Title :

    IMPROVED MARINE HYDRO-GENERATOR


    Additional title:

    VERBESSERTER WASSERKRAFTGENERATOR
    HYDROGÉNÉRATEUR MARIN AMÉLIORÉ


    Contributors:

    Publication date :

    2025-01-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F03B MACHINES OR ENGINES FOR LIQUIDS , Kraft- und Arbeitsmaschinen oder Kraftmaschinen für Flüssigkeiten / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / F16H Getriebe , GEARING



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