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.
IMPROVED MARINE HYDRO-GENERATOR
VERBESSERTER WASSERKRAFTGENERATOR
HYDROGÉNÉRATEUR MARIN AMÉLIORÉ
2025-01-15
Patent
Electronic Resource
English
THROUGH-HULL PASSIVE INBOARD HYDRO-GENERATOR FOR A MARINE VESSEL
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