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Optimal Constant DC Link Voltage Operation of a Wave Energy Converter
Division of Electricity, Swedish Centre for Renewable Electric Energy Conversion, P.O. Box 534, 751 21 Uppsala, Sweden
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Received: 6 February 2013; in revised form: 21 March 2013 / Accepted: 22 March 2013 / Published: 8 April 2013
Abstract: This article proposes a simple and reliable damping strategy for wave powerfarm operation of small-scale point-absorber converters. The strategy is based on passiverectification onto a constant DC-link, making it very suitable for grid integration of the farm.A complete model of the system has been developed in Matlab Simulink, and uses real sitedata as input. The optimal constant DC-voltage is evaluated as a function of the significantwave height and energy period of the waves. The total energy output of the WEC is derivedfor one year of experimental site data. The energy output is compared for two cases, onewhere the optimal DC-voltage is determined and held constant at half-hour basis throughoutthe year, and one where a selected value of the DC-voltage is kept constant throughout theyear regardless of sea state.
Keywords: wave energy; DC link voltage control; point absorber; linear generator
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Kurupath, V.; Ekström, R.; Leijon, M. Optimal Constant DC Link Voltage Operation of a Wave Energy Converter. Energies 2013, 6, 1993-2006.
Kurupath V, Ekström R, Leijon M. Optimal Constant DC Link Voltage Operation of a Wave Energy Converter. Energies. 2013; 6(4):1993-2006.
Kurupath, Venugopalan; Ekström, Rickard; Leijon, Mats. 2013. "Optimal Constant DC Link Voltage Operation of a Wave Energy Converter." Energies 6, no. 4: 1993-2006.