A Small Scale Wave Energy Converter Development By Experimental Test

Gu, H, Zhu, X, Wang, C, Wang, D, Zhu, G, Song, R, Lin, P and Qian, L ORCID: https://orcid.org/0000-0002-9716-2342 (2023) A Small Scale Wave Energy Converter Development By Experimental Test. In: International Joint Conference on Civil and Marine Engineering (JCCME 2023), 3 November 2023 - 6 November 2023, Dalian, China.

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Abstract

Waves contain huge energy, and very little wave energy may meet a small-scale ocean instrument demand. In this paper, an inner pendulum float wave energy converter is developed. The buoy is designed and its energy capture test is conducted in a wide wave flume in Ningbo University. The buoy has an elliptic top section with long axis often along wave direction, the bottom is semicircle in the vertical section along wave direction. The inner pendulum moving in wave direction is installed whose axle driving a three-phase AC motor to generate electricity. The electric circuit is designed to rectify AC to DC and to store DC electricity into a battery. Electric resistances are set as operating load, value of resistances and voltage on a resistance are measured to calculate the power captured by the device. The test is conducted in regular wave, the relationship between power captured and wave condition are analyzed. The system captures more energy at wave period 1.0s. It is predicted that when the system adopted on ocean fishing field, the averaged power is about 279 mW, and the maximum power is about 1306 mW.