STUDY OF ENERGY ACQUISITION OF HORIZONTAL PENDULUM WAVE ENERGY CONVERTER BASED ON SPIRAL SPRING-FLYWHEEL PTO SYSTEM

Cao Feifei; Xu Yingzhou; Jiang Xiaoqiang; Zhang Shuo; Zhang Chongwei; Shi Hongda

doi:10.19912/j.0254-0096.tynxb.2025-0263

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (6) : 506-512. DOI: 10.19912/j.0254-0096.tynxb.2025-0263

STUDY OF ENERGY ACQUISITION OF HORIZONTAL PENDULUM WAVE ENERGY CONVERTER BASED ON SPIRAL SPRING-FLYWHEEL PTO SYSTEM

Cao Feifei^1~3, Xu Yingzhou¹, Jiang Xiaoqiang¹, Zhang Shuo¹, Zhang Chongwei⁴, Shi Hongda^1~3

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Abstract

Taking a horizontal pendulum wave energy converter （WEC） based on a spiral spring-flywheel power take-off （PTO） system as research object, considering the spring stiffness and flywheel moment of inertia as variables, a fully coupled numerical model of the WEC is constructed to investigate energy acquisition under multiple degrees of freedom through model test and numerical simulation. The research shows that installing a spiral spring-flywheel PTO can enhance the stability of energy acquisition and increase the power generation bandwidth of the WEC. Under regular wave conditions, the standard deviation of power is positively correlated with the spring stiffness and negatively correlated with the flywheel moment of inertia, with this phenomenon being more pronounced near the resonance period.

Key words

wave energy conversion / pendulums / springs / flywheels / energy acquisition / stability

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Cao Feifei, Xu Yingzhou, Jiang Xiaoqiang, Zhang Shuo, Zhang Chongwei, Shi Hongda. STUDY OF ENERGY ACQUISITION OF HORIZONTAL PENDULUM WAVE ENERGY CONVERTER BASED ON SPIRAL SPRING-FLYWHEEL PTO SYSTEM[J]. Acta Energiae Solaris Sinica. 2026, 47(6): 506-512 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0263

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