Establishment of load matching model of an oscillating float type wave energy power generation device

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (17) : 55-62.

HE Guanghua1,2, WANG Peng1, LIU Chaogang1, LUAN Zhengxiao1

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Abstract

PTO parameters determination plays a fundamental role in the wave energy converter design. Based on the buoy free heave dynamic model, combined with the generator mathematical model and transmission ratio, the Simulink model was proposed, which was the buoy heave motion under generator. The transfer function of the Simulink model was simplified to obtain the equivalent mass and load damping, and using AQWA to calculate the heave response of buoy under these loads. Compared with the Simulink model, the output response relative error of the simplified transfer function is less than 1%. The relative errors are less than 4%, which is the buoy heave motion amplitude and average generation power between the Simulink model and AQWA. The Simulink model can be effectively used to determine transmission ratio and generator selection.
Key words: wave energy converter; load matching; generator; transmission ratio

Key words

wave energy converter / load matching / generator / transmission ratio

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HE Guanghua1,2, WANG Peng1, LIU Chaogang1, LUAN Zhengxiao1. Establishment of load matching model of an oscillating float type wave energy power generation device[J]. Journal of Vibration and Shock, 2022, 41(17): 55-62

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