Research on the energy conversion characteristics of a novel distributed array hydraulic PTO system with wave-adaptive capabilities

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-05-22 DOI:10.1016/j.energy.2025.136689

Chenglong Li , Peng Qian , Dahai Zhang

{"title":"Research on the energy conversion characteristics of a novel distributed array hydraulic PTO system with wave-adaptive capabilities","authors":"Chenglong Li , Peng Qian , Dahai Zhang","doi":"10.1016/j.energy.2025.136689","DOIUrl":null,"url":null,"abstract":"<div><div>Wave energy is a major source of ocean renewable energy. To harness its potential, this paper presents an articulated multi-body wave energy converter (WEC) equipped with a novel distributed array hydraulic power take-off (PTO) system, tailored to China's sea conditions. The system is designed to efficiently harvest both meager and abundant wave energy resources. A swing cylinder 6-bar mechanism is introduced to convert wave energy into mechanical energy. A comprehensive mechanical-electrical-hydraulic coupling model is developed, integrating the hydraulic system, mechanical linkage, and control components. The analysis evaluates the impact of parameters such as accumulator nitrogen charging pressure, accumulator release pressure, and oil filling quantity on the dynamic characteristics of the system, leading to the optimization of hydraulic system parameters. Energy conversion under both regular and irregular waves is simulated. A test platform is established to experimentally evaluate both the pressure regulation and power generation capabilities of the distributed PTO system. Simulation results closely match experimental data, validating the model and optimization approach. Finally, a prototype sea-trial confirms the feasibility and effectiveness of the proposed hydraulic PTO system for articulated multi-body WEC, laying a solid foundation for future scaling and deployment.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"329 ","pages":"Article 136689"},"PeriodicalIF":9.0000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S036054422502331X","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

Wave energy is a major source of ocean renewable energy. To harness its potential, this paper presents an articulated multi-body wave energy converter (WEC) equipped with a novel distributed array hydraulic power take-off (PTO) system, tailored to China's sea conditions. The system is designed to efficiently harvest both meager and abundant wave energy resources. A swing cylinder 6-bar mechanism is introduced to convert wave energy into mechanical energy. A comprehensive mechanical-electrical-hydraulic coupling model is developed, integrating the hydraulic system, mechanical linkage, and control components. The analysis evaluates the impact of parameters such as accumulator nitrogen charging pressure, accumulator release pressure, and oil filling quantity on the dynamic characteristics of the system, leading to the optimization of hydraulic system parameters. Energy conversion under both regular and irregular waves is simulated. A test platform is established to experimentally evaluate both the pressure regulation and power generation capabilities of the distributed PTO system. Simulation results closely match experimental data, validating the model and optimization approach. Finally, a prototype sea-trial confirms the feasibility and effectiveness of the proposed hydraulic PTO system for articulated multi-body WEC, laying a solid foundation for future scaling and deployment.

查看原文本刊更多论文

具有波浪自适应能力的新型分布式阵列液压PTO系统能量转换特性研究

波浪能是海洋可再生能源的主要来源。为了充分利用其潜力，本文提出了一种铰接式多体波能转换器（WEC），该转换器配备了一种针对中国海况量身定制的新型分布式阵列液压动力起飞（PTO）系统。该系统旨在有效地收集贫乏和丰富的波浪能资源。采用摆缸六杆机构将波浪能转化为机械能。建立了综合液压系统、机械连杆和控制元件的机电液耦合模型。分析评估了蓄能器充氮压力、蓄能器释放压力、充油量等参数对系统动态特性的影响，从而对液压系统参数进行优化。模拟了规则波和不规则波作用下的能量转换。建立了测试平台，对分布式PTO系统的调压能力和发电能力进行了实验评估。仿真结果与实验数据吻合较好，验证了模型和优化方法的有效性。最后，原型海上试验证实了所提出的液压PTO系统用于铰接多体WEC的可行性和有效性，为未来的扩展和部署奠定了坚实的基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.