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Coupled Modelling and Advanced Control for Smooth Operation of a Grid Connected Linear Electric Generator based Wave-to-Wire System

Journal Article


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Abstract


  • The perpetual oscillations of ocean waves produce potential energy, which can be converted to electrical energy with the help of direct drive linear generators. The fluctuating generated power poses a major challenge when it is supplied to the power grid. In this paper, a supercapacitor provides the short-term energy storage to buffer and smooth out the power fluctuations. A new coupled model of a wave energy converter and a linear generator is proposed for its response characterization under varying system conditions. The developed model and an advanced control strategy is used to exhibit a smooth and stable operation of the wave-to-wire system. The generator side converter is controlled to extract the maximum power from the waves and to minimize the generator losses by controlling its d-axis and q-axis currents. The grid side converter is controlled to keep the dc-link voltage constant and to generate the required voltage waveforms at the point of common coupling. The performance of the proposed control strategy for the wave-to-wire system is investigated under different applied diffraction forces. The simulation results show that with the use of proposed control scheme and the supercapacitor, the wave-to-wire system can operate in a smooth and stable operation under normal and fault conditions.

Publication Date


  • 2020

Citation


  • S. Rasool, M. Islam, K. M. Muttaqi & D. Sutanto, "Coupled Modelling and Advanced Control for Smooth Operation of a Grid Connected Linear Electric Generator based Wave-to-Wire System," IEEE Transactions on Industry Applications, vol. 56, (5) pp. 5575-5584, 2020.

Scopus Eid


  • 2-s2.0-85091765090

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=5302&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/4274

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 5575

End Page


  • 5584

Volume


  • 56

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • The perpetual oscillations of ocean waves produce potential energy, which can be converted to electrical energy with the help of direct drive linear generators. The fluctuating generated power poses a major challenge when it is supplied to the power grid. In this paper, a supercapacitor provides the short-term energy storage to buffer and smooth out the power fluctuations. A new coupled model of a wave energy converter and a linear generator is proposed for its response characterization under varying system conditions. The developed model and an advanced control strategy is used to exhibit a smooth and stable operation of the wave-to-wire system. The generator side converter is controlled to extract the maximum power from the waves and to minimize the generator losses by controlling its d-axis and q-axis currents. The grid side converter is controlled to keep the dc-link voltage constant and to generate the required voltage waveforms at the point of common coupling. The performance of the proposed control strategy for the wave-to-wire system is investigated under different applied diffraction forces. The simulation results show that with the use of proposed control scheme and the supercapacitor, the wave-to-wire system can operate in a smooth and stable operation under normal and fault conditions.

Publication Date


  • 2020

Citation


  • S. Rasool, M. Islam, K. M. Muttaqi & D. Sutanto, "Coupled Modelling and Advanced Control for Smooth Operation of a Grid Connected Linear Electric Generator based Wave-to-Wire System," IEEE Transactions on Industry Applications, vol. 56, (5) pp. 5575-5584, 2020.

Scopus Eid


  • 2-s2.0-85091765090

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=5302&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/4274

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 5575

End Page


  • 5584

Volume


  • 56

Issue


  • 5

Place Of Publication


  • United States