Design and Research of Hydraulic Conversion System for Wave Energy Multi-chamber Cylinder

doi:10.11832/j.issn.1000-4858.2022.10.006

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CHINESE HYDRAULICS & PNEUMATICS ›› 2022, Vol. 46 ›› Issue (10) : 40-49. DOI: 10.11832/j.issn.1000-4858.2022.10.006

Design and Research of Hydraulic Conversion System for Wave Energy Multi-chamber Cylinder

FANG Zi-fan ^1,2, ZUO Xin-qiu^1,2, XIONG Fei^1,2, WANG Jia-jia^1,2, XIE Xue-yuan^1,2

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Abstract

Taking the hydraulic conversion system of the oscillating flapping-wing wave energy power generation device as the research object, a hydraulic conversion system containing multi-cavity oil cylinders is designed to convert wave energy into usable mechanical energy. Based on the principle of high-efficiency collection of random waves and stable output of the hydraulic conversion system, a multi-cavity oil cylinder is designed and the composition of the hydraulic conversion system and the specific parameters of each component are determined. According to different sea conditions, by changing the electromagnetic valve shift strategy to realize the collection of random waves, the number of accumulators and the pre-charge pressure are designed and adjusted to keep the pressure of the high and low pipelines of the hydraulic system stable, and the hydraulic motor can stably output mechanical energy. Based on the bond graph modeling theory of multi energy domain, the AMESim simulation platform is used to build the model of acquisition mechanism and hydraulic conversion system. The motion response of acquisition mechanism under three-level, four level and five level sea conditions is simulated as the system input. The effectiveness, output stability and conversion efficiency of hydraulic conversion system are simulated and analyzed. The results show that the designed hydraulic conversion system can effectively collect random waves by changing the electromagnetic valve shift strategy, and effectively improve the stability and conversion efficiency of the hydraulic conversion system. The results lay a theoretical foundation for the development and research of hydraulic conversion system of oscillating flapping wing wave power generation device.

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wave energy conversion / multi-cavity oil cylinder / solenoid valve shift strategy / systematic design / AMESim

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FANG Zi-fan , ZUO Xin-qiu, XIONG Fei, WANG Jia-jia, XIE Xue-yuan. Design and Research of Hydraulic Conversion System for Wave Energy Multi-chamber Cylinder[J]. CHINESE HYDRAULICS & PNEUMATICS. 2022, 46(10): 40-49. https://doi.org/10.11832/j.issn.1000-4858.2022.10.006

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Received	Revised	Published
2022-02-14	2022-03-23	2022-10-15
Issue Date
2022-11-01

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