Electric motors are used in the majority of all-electric ship concepts to drive marine propellers. In spite of significant efforts to optimize the propeller selection, there is still a need for the development of propeller optimization methodologies that take into account the ship's operational requirements and match the propeller to an electric motor. In this paper, we employ an optimization procedure that minimizes the electric motor shaft power with respect to the propeller's design parameters in the Wageningen B-screw series. The optimization uses a differential evolution method to evaluate propeller designs while accounting for imposed limits in cavitation, tip velocity, and mechanical strength. The modeling consists of well-known parametric approaches overall but computational fluid dynamics is used for the still-water resistance instead. The optimization algorithm is exercised on an actual ferryboat. The optimization resulted in a 22% percent improvement in the objective function when comparing the worst configurations of initial and final populations. The longest running time was 2.8 hours in an AMD Ryzen 7 3700×8-Core Processor @ 2200 MHz in which 2964 designs were assessed. Similar propeller designs were found for 7.0 and 7.5 knots, except for the expanded area ratio due to the cavitation limit. Geared drives with reductions of about 1.2 and 1.1 were optimal respectively for 7.0 and 7.5 knots, while open-water propeller efficiencies peaked at nearly 39% and 38%.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Genetic Optimization of Propeller-Motor Matching for All-Electric Ships


    Beteiligte:


    Erscheinungsdatum :

    2023-08-01


    Format / Umfang :

    4052990 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    PROPELLER FOR SHIPS

    ADRIO ABALO VICENTE | Europäisches Patentamt | 2017

    Freier Zugriff

    PROPELLER CAP FOR SHIPS

    LEE TAE GOO / YANG HEE JOON / LEE YONG CHUL | Europäisches Patentamt | 2023

    Freier Zugriff

    Electric Motor Propeller System

    RUSS JONATHAN CHRISTIAN | Europäisches Patentamt | 2024

    Freier Zugriff

    Axial vibration of crankshaft and propeller shafting of motor ships

    Kleiner, A. | Engineering Index Backfile | 1964


    Lips propeller for Liberty ships

    Engineering Index Backfile | 1951