In order to reduce the cost of electricity produced by wave energy converters (WECs), the benefit of selling electricity as well as the investment costs of the structure has to be considered. This paper presents a methodology for assessing the control strategy for a WEC with respect to both energy output and structural fatigue loads. Different active and passive control strategies are implemented (proportional (P) controller, proportional-integral (PI) controller, proportional-integral-derivative with memory compensation (PID) controller, model predictive control (MPC) and maximum energy controller (MEC)), and load time-series resulting from numerical simulations are used to design structural parts based on fatigue analysis using rain-flow counting, Stress-Number (SN) curves and Miner’s rule. The objective of the methodology is to obtain a cost-effective WEC with a more comprehensive analysis of a WEC based on a combination of well known control strategies and standardised fatigue methods. The presented method is then applied to a particular case study, the Wavestar WEC, for a specific location in the North Sea. Results, which are based on numerical simulations, show the importance of balancing the gained power against structural fatigue. Based on a simple cost model, the PI controller is shown as a viable solution.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Balancing power output and structural fatigue of wave energy converters by means of control strategies


    Beteiligte:
    Ferri, Francesco (Autor:in) / Ambühl, Simon (Autor:in) / Fischer, Boris (Autor:in) / Kofoed, Jens Peter (Autor:in)

    Erscheinungsdatum :

    2014-01-01


    Anmerkungen:

    Ferri , F , Ambühl , S , Fischer , B & Kofoed , J P 2014 , ' Balancing power output and structural fatigue of wave energy converters by means of control strategies ' , Energies , vol. 7 , no. 4 , pp. 2246-2273 . https://doi.org/10.3390/en7042246



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



    Load balancing multimodule switching power converters

    Mclyman, W. T. / Wester, G. W. | NTRS | 1979



    Connection substation for wave energy converters in a wave power station

    ALM FILIP / CLAESSON LENNART | Europäisches Patentamt | 2019

    Freier Zugriff

    CONNECTION SUBSTATION FOR WAVE ENERGY CONVERTERS IN A WAVE POWER STATION

    ALM FILIP / CLAESSON LENNART | Europäisches Patentamt | 2017

    Freier Zugriff