US 11,731,749 B1
System and method for alleviating ambient torsional loads affecting marine vessel propulsion
Mark Moran, Tel Aviv (IL); Nevo Dotan, Beerotayim (IL); and Amichay Haim Gross, Herzliya (IL)
Assigned to MARINE EDGE LTD., Haifa (IL)
Filed by MARINE EDGE LTD., Haifa (IL)
Filed on Dec. 29, 2022, as Appl. No. 18/91,200.
Int. Cl. B63H 21/21 (2006.01); B63H 21/17 (2006.01); B63H 21/14 (2006.01); B63B 79/40 (2020.01); B63B 79/15 (2020.01)
CPC B63H 21/21 (2013.01) [B63B 79/15 (2020.01); B63B 79/40 (2020.01); B63H 21/14 (2013.01); B63H 21/17 (2013.01); B63H 2021/216 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system for alleviating variations in torsional loads applied to a shaft coupled to a main engine of a marine vessel, said shaft is coupled to a propeller of the marine vessel, the system comprising:
an electric motor-generator configured to provide power to the shaft or take out power from the shaft;
a controller coupled to the electric motor-generator said controller is configured to execute a set of instructions, comprising:
measuring a group of values that are indicative of torsional loads applied on a shaft of the marine vessel over time;
creating a time-based series of values that represent a predictive time-based torsional loads on the marine vessel;
collecting a group of readings indicative of the amount of power provided by a main engine of the marine vessel;
computing an intervention time series of power values to be outputted by the electric motor-generator;
wherein the electric motor-generator outputs the intervention time series values of power to the shaft.