Validation of Real-Time Nonlinear Model Predictive Control on Point Absorber Type Wave Energy Converter by Tank Test

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  • Taniguchi Tomoki
    国立研究開発法人海上・港湾・航空技術研究所 海上技術安全研究所
  • Fujiwara Toshifumi
    国立研究開発法人海上・港湾・航空技術研究所 海上技術安全研究所
  • Umeda Jun
    国立研究開発法人海上・港湾・航空技術研究所 海上技術安全研究所
  • Nimura Tadashi
    国立研究開発法人海上・港湾・航空技術研究所 海上技術安全研究所
  • Katayama Toru
    大阪府立大学大学院工学研究科

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  • 並進動揺型波力発電装置を対象とした実時間最適制御法の水槽模型試験による検証
  • ヘイシン ドウヨウガタハリョク ハツデン ソウチ オ タイショウ ト シタ ジツジカン サイテキ セイギョホウ ノ スイソウ モケイ シケン ニ ヨル ケンショウ

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Abstract

<p>Real-time implementation of a nonlinear model predictive control (NMPC) for a point absorber type wave energy converter (PAWEC) with a tubular air cored permanent magnet generator is experimentally validated through tank model tests. The control inputs of the NMPC were updated by the differential equation to trace the solution of an associated two-point boundary-value problem. Two conventional control strategies, the resistive load control and the approximate complex-conjugate control with considering the copper loss (ACL), and the NMPC were implemented to the PAWEC model. The floater heave motion, control force of the generator, and power generation characteristics were compared in these control strategies. The power generation performance of the NNPC was the same level of that of the ACL in regular and irregular waves. The sensitivities to the linear viscous damping estimation error and to the wave excitation force estimation error in the NMPC were experimentally evaluated by the tank model tests.</p>

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