Development of an Onshore BenchTest System for a Wave Energy Converter and Verification of a Real-Time OptimalControl

DOI Web Site 2 Citations 9 References Open Access
  • 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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Other Title
  • 波力発電装置波力発電装置の陸上試験装置の開発と実時間最適制御法の検証

Description

<p>The onshore bench test system consisting of two linear shaft motors is produced to emulate the wave energy converter (WEC) motion in waves, control force, and power generation under different control strategies. Two conventional control strategies, the resistive load control (RL)and the approximate complex-conjugate control with considering the copper loss (ACL), and an optimal control strategy, that is, the nonlinear model predictive control (NMPC), were implemented to the onshore bench test system. The measured motion of the test system, control force, and power generation are good agreement with the calculated ones in the simulated regular waves conditions. In the simulated irregular waves conditions, the measured motion of the system and control force are reasonably consistent with the calculated ones. The NMPC is able to finish the optimal calculations less than 50 ms in the tested cases in this paper. It is confirmed from the onshore bench tests that the calculation iteration number of the NMPC increased as the control input was approaching to the input constraints.</p>

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