MURAL - Maynooth University Research Archive Library



    Non-linear simulation of a wave energy converter with multiple degrees of freedom using a harmonic balance method


    Novo, Riccardo and Bracco, Giovanni and Sirigu, Sergej A. and Mattiazzo, Giuliana and Mérigaud, Alexis and Ringwood, John (2018) Non-linear simulation of a wave energy converter with multiple degrees of freedom using a harmonic balance method. In: ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. ASME. ISBN 9780791851319

    [img]
    Preview
    Download (2MB) | Preview


    Share your research

    Twitter Facebook LinkedIn GooglePlus Email more...



    Add this article to your Mendeley library


    Abstract

    Computationally efficient simulation methods for wave energy converters (WECs) are useful in a variety of applications. The simulation task is particularly challenging when nonlinearities are present in the WEC model. Using a Fourier projection of the system inputs and variables, harmonic balance (HB) is a computationally-efficient method to solve for the steady-state motion of a non-linear system, preserving an accurate representation of the non-linear effects. In previous work, HB has been used for the simulation of WECs with one degree of freedom (DoF). Here, HB is presented for WEC systems with an arbitrary number of DoFs. A non-linear, 2-DoF model of the ISWEC wave energy device is used as an example of application. The HB implementation of the ISWEC model is described in detail. Through numerical applications, chosen in both regular and irregular waves, general features of the HB method are exemplified, in particular the exponential convergence rate to the actual mathematical solution, and the sensitivity, in some cases, to the starting point of the HB algoritm

    Item Type: Book Section
    Additional Information: Cite as: Novo, Riccardo, Bracco, Giovanni, Sirigu, Sergej A., Mattiazzo, Giuliana, Mérigaud, Alexis, and Ringwood, John V. "Non Linear Simulation of a Wave Energy Converter With Multiple Degrees of Freedom Using a Harmonic Balance Method." Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. Volume 10: Ocean Renewable Energy. Madrid, Spain. June 17–22, 2018. V010T09A041. ASME. https://doi.org/10.1115/OMAE2018-78067
    Keywords: non-linear systems; simulations; wave energy converter; multiple degrees; freedom; harmonic balance method; Ocean Renewable Energy; steady state; Wave energy;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 13347
    Identification Number: https://doi.org/10.1115/OMAE2018-78067
    Depositing User: Professor John Ringwood
    Date Deposited: 01 Oct 2020 16:52
    Publisher: ASME
    Refereed: Yes
    URI:

    Repository Staff Only(login required)

    View Item Item control page

    Downloads

    Downloads per month over past year