IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133753

Jingrong Dong , Wenqing Zhang , Yuke Chen , Tingting Li

{"title":"Does technological progress mode affect just energy transition? A seemingly unrelated regression analysis based on Chinese provincial panel data","authors":"Jingrong Dong , Wenqing Zhang , Yuke Chen , Tingting Li","doi":"10.1016/j.energy.2024.133753","DOIUrl":"10.1016/j.energy.2024.133753","url":null,"abstract":"<div><div>Just energy transition (JET) refers to the process of shifting from fossil-fuel-based energy systems to more sustainable and renewable energy sources in a manner that is inclusive and socially fair. Technological progress is a key driver of the energy transition. Selecting an appropriate technological progress mode (TPM) to drive JET that harmonizes environmental conservation with employment stability is crucial for economies to achieve sustainable development. Based on seemingly unrelated regression (SUR) analysis, this research uses provincial panel data of China from 2001 to 2020 to examine the effects and underlying mechanisms of various TPMs on JET. We first construct a translog cost function incorporating four TPMs, including technology import, technology transformation, cooperative research and development (R&D), and independent R&D. The study then systematically estimates and contrasts the factor bias and utilization tendencies associated with these TPMs. The findings indicate that (1) technology import does not directly facilitate JET as it leads to neutral technological progress; (2) technology transformation and cooperative R&D, associated with energy-biased technological progress, exhibit a tendency toward energy use and labor saving, which hinders JET; (3) independent R&D, linked with labor-biased technological progress, demonstrates a labor-using and energy-saving orientation, which supports JET; (4) the adverse effects of technology transformation and cooperative R&D on JET can be mitigated through enhanced environmental regulation, increased environmental taxation, and the provision of low-carbon subsidies. We offer policy recommendations for the Chinese government in promoting TPMs that foster JET while also providing insights and experiences that are beneficial to economies at various development stages in their pursuit of JET.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133753"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical game theory-based optimal power management for both seaports and ships 基于分层博弈论的海港和船舶最佳电力管理

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133748

Shuli Wen , Zhixing Dong , Tianyang Zhao , Miao Zhu , Yuqing Huang

{"title":"Hierarchical game theory-based optimal power management for both seaports and ships","authors":"Shuli Wen , Zhixing Dong , Tianyang Zhao , Miao Zhu , Yuqing Huang","doi":"10.1016/j.energy.2024.133748","DOIUrl":"10.1016/j.energy.2024.133748","url":null,"abstract":"<div><div>Unlike land-based power systems, a seaport microgrid is not only equipped with extensive electrification but also connected with ships, which turns maritime power management into a comprehensive transportation-power coordination problem. To fully exploit the potential of shipboard power systems for energy efficiency improvement of seaports, a hierarchical Stackelberg game-based framework is developed in this paper to achieve efficient power management for both seaports and ships. In this framework, the seaport microgrid serves as a leader to manage the local sources and determine the price for ships to maximize revenue, considering the influence of both the power side and transportation side. On the other hand, the ships act as followers to decide the charging and service strategies for an optimal trade-off between the benefits from onboard battery charging and the ship service cost. The proposed game is solved as a bilevel optimization problem via mathematical programming with the equilibrium constraints method. The proposed algorithm's efficiency is evaluated through numerical simulations. The simulation results demonstrate that the proposed power management method can simultaneously increase the economic profits of seaports and improve the service of ships at berth. Compared to traditional energy management methods, the comprehensive benefits can be increased by approximately 36 %.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133748"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

4E analysis and optimization comparison of solar, biomass, geothermal, and wind power systems for green hydrogen-fueled SOFCs 用于绿色氢燃料 SOFC 的太阳能、生物质、地热和风力发电系统的 4E 分析和优化比较

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133740

Mohammad Zoghi, Saleh Gharaie, Nasser Hosseinzadeh, Ali Zare

{"title":"4E analysis and optimization comparison of solar, biomass, geothermal, and wind power systems for green hydrogen-fueled SOFCs","authors":"Mohammad Zoghi, Saleh Gharaie, Nasser Hosseinzadeh, Ali Zare","doi":"10.1016/j.energy.2024.133740","DOIUrl":"10.1016/j.energy.2024.133740","url":null,"abstract":"<div><div>Integrating renewable energies with hydrogen production via electrolysis and utilizing hydrogen as a fuel for solid oxide fuel cells (SOFCs) presents a synergistic approach towards sustainable energy generation. This coupling offers enhanced flexibility, allowing for efficient energy storage and distribution, thereby addressing intermittency issues associated with renewable sources. Additionally, the utilization of hydrogen in SOFCs enables high-efficiency power generation with reduced emissions, contributing to the transition towards a cleaner energy landscape. In the present study, four types of renewable energies, namely solar, biomass, geothermal, and wind, produce hydrogen by coupling power generation units and a proton exchange membrane electrolyzer (PEME). Then, the produced hydrogen is stored and used for later utilization in an SOFC subsystem. A 4E (energy, exergy, exergy-economic, and environmental) study is conducted for the proposed systems through a sensitivity study and design optimization. In the best output performance mode, the best exergy efficiency is obtained by the biomass-based system, which is equal to 9.40 %, and the lowest values for total cost rate and unit cost of outputs are achievable by the geothermal-based system, with values of 27.72 $/h and 43.23 $/GJ.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133740"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cycle analysis and environmental assessments of cascade organic rankine cycle on diesel engine ships 柴油机船舶级联有机秩循环的循环分析和环境评估

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133752

Ji-Won Yoon , Suk-Ho Jung , Chang-Hyo Son , Ho-Saeng Lee , Seung-Taek Lim , Sung-Hoon Seol

{"title":"Cycle analysis and environmental assessments of cascade organic rankine cycle on diesel engine ships","authors":"Ji-Won Yoon , Suk-Ho Jung , Chang-Hyo Son , Ho-Saeng Lee , Seung-Taek Lim , Sung-Hoon Seol","doi":"10.1016/j.energy.2024.133752","DOIUrl":"10.1016/j.energy.2024.133752","url":null,"abstract":"<div><div>This study investigates the application of organic Rankine cycle (ORC) on ships to reduce fuel oil consumption and assess improvements in the Energy Efficiency Existing Ship Index (EEXI), and carbon intensity indicator (CII). A cascade ORC(C-ORC) configuration is designed to utilize the exhaust gas from a diesel engine.</div><div>Thermodynamic simulation identified a combination of toluene and R1233zd as the optimal working fluids for the C-ORC. Exergy analysis was conducted to evaluate the performance difference between the C-ORC system and a version with an internal heat exchanger (C-IHX ORC). The results showed a maximum exergy efficiency of 56.78 % for the C-IHX ORC, compared to 49.33 % for the C-ORC. Further evaluations of the C-IHX ORC, including fuel savings, energy generation, EEXI, and CII, demonstrated that average vessel fuel consumption decreased by 1.02 %, and average attained EEXI improved by 0.93 %. Additionally, the attained CII value was enhanced by 0.98 % on average, depending on operating loads and traveled distances. Although the improvements of EEXI, and CII offered were modest, they present the potential for further enhancement through the utilization of additional waste heat sources, such as economizer steam, and jacket cooling water.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133752"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of mooring failure on the dynamic behavior of the power capture platforms 系泊失效对动力捕获平台动态行为的影响

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133761

Lin Cui , Haitao Wu , Meng Li , Mengyao Lu , Weixing Liu , Zhiyang Zhang

{"title":"Effects of mooring failure on the dynamic behavior of the power capture platforms","authors":"Lin Cui , Haitao Wu , Meng Li , Mengyao Lu , Weixing Liu , Zhiyang Zhang","doi":"10.1016/j.energy.2024.133761","DOIUrl":"10.1016/j.energy.2024.133761","url":null,"abstract":"<div><div>In recent years, for enhancing the ocean energy capture, it has been prevail to combine multiple wave energy converters (WECs) with the floating platforms. A power capture platform concept<del>s</del> is proposed in this paper based on the point-absorber WEC array and the SPIC semi-submersible platform. The present study conducts the time-domain dynamic analysis on the performance of the power capture platforms with mooring failure. After the validation of the numerical models, ANSYS-AQWA is employed to investigate the platform motion response, the remaining mooring lines' tension response, and the WEC array's power output. The results show that the platform motion and the remaining mooring lines' tension appear significant transient overshoots after mooring failure. The mean motion response of the platform increases because of the reduction of mooring stiffness. Meanwhile, the energy distribution of the platform slow-drift and roll motions at the low-frequency region increases as well. Moreover, the mooring line tension adjacent to the failed mooring line increases significantly, while that of other mooring lines decreases. Notably, mooring failure has slight effects on the WEC array's energy conversion performance, and the total absorbed power among Model 2 is more than that among Model 1. These important findings provide some insights into the design of power capture platforms. Moreover, to ensure the floating system stable and reliable, the effects of mooring failure and the resulting changes should be evaluated in advance.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133761"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The power of digitalization: A study of the effect of the digital economy on household energy poverty 数字化的力量：数字经济对家庭能源贫困的影响研究

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133652

Kaixia Zhang , Caiqi Bu

{"title":"The power of digitalization: A study of the effect of the digital economy on household energy poverty","authors":"Kaixia Zhang , Caiqi Bu","doi":"10.1016/j.energy.2024.133652","DOIUrl":"10.1016/j.energy.2024.133652","url":null,"abstract":"<div><div>Severe energy poverty is one of the major challenges hindering the achievement of sustainable development in developing countries, while the current rapid advances in the digital economy offer new ways to alleviate energy poverty, the household-level effects of which urgently need to be supported by more empirical research. Using Chinese household-level panel data from 2010 to 2020, we identify the causal effects of the digital economy on household energy poverty by employing the \"Broadband China\" pilot policy and applying the difference-in-differences (DID) method. Research shows that the digital economy can significantly mitigate household energy poverty, especially among low earning and low educational inputs households. Improving energy accessibility through increased Internet use and promoting energy affordability through increased employment and income are the main channels through which the digital economy can exert an energy poverty reduction effect. Moreover, welfare analyses indicate that the power of digitalization not only reduces household energy poverty, but also further enhances the residents' welfare and improves local carbon reduction welfare performance. This study will provide new ideas from the viewpoint of digital economy development to improve household energy poverty governance in developing countries.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133652"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced dual mixed refrigerant (DMR) natural gas liquefaction plant with liquid air: Focus on configuration and optimization 采用液态空气的先进双混合制冷剂 (DMR) 天然气液化装置：关注配置和优化

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133747

Haneul Mun , Dohee Kim , Jinwoo Park , Inkyu Lee

{"title":"Advanced dual mixed refrigerant (DMR) natural gas liquefaction plant with liquid air: Focus on configuration and optimization","authors":"Haneul Mun , Dohee Kim , Jinwoo Park , Inkyu Lee","doi":"10.1016/j.energy.2024.133747","DOIUrl":"10.1016/j.energy.2024.133747","url":null,"abstract":"<div><div>This study introduces a novel approach to integrating LNG cold energy into the dual mixed refrigerant (DMR) process, employing liquid air as a cold energy carrier. The DMR process is chosen for natural gas liquefaction due to its flexibility in adjusting mixed refrigerant compositions when external cold sources are utilized. Two configurations are investigated: the low-pressure liquid air (LPLA) process, which relies solely on heat exchange, and the high-pressure liquid air (HPLA) process, which involves the pressurization and expansion of liquid air. Additionally, two optimization strategies are explored: 'With Composition' (WC) optimization, which includes refrigerant composition as a variable, and 'Without Composition' (WOC) optimization, which does not. Utilizing liquid air reduces the load on the refrigeration cycle, leading to improved performance compared to the conventional DMR process. The air expansion generates additional power and cold energy, while WC optimization further reduces the flow rate of low-boiling point components, significantly lowering compression energy consumption. As a result, the DMR-HPLA-WC process achieves a 44.17 % reduction in energy consumption, an 8.7 % improvement in exergy efficiency, and a 37.63 % decrease in specific costs.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133747"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-economic performance analysis of biomass-to-methanol with solid oxide electrolyzer for sustainable bio-methanol production 利用固体氧化物电解槽生产生物质转化甲醇以实现可持续生物甲醇生产的技术经济性能分析

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133764

Thanaphorn Detchusananard , Kunlanan Wiranarongkorn , Karittha Im-orb

{"title":"Techno-economic performance analysis of biomass-to-methanol with solid oxide electrolyzer for sustainable bio-methanol production","authors":"Thanaphorn Detchusananard , Kunlanan Wiranarongkorn , Karittha Im-orb","doi":"10.1016/j.energy.2024.133764","DOIUrl":"10.1016/j.energy.2024.133764","url":null,"abstract":"<div><div>The analysis of the technical and economic performance of an integrated biomass to methanol and solid oxide electrolysis process (BtM-SOEC) is studied to find more sustainable process of bio-methanol production. The oil palm empty fruit branch (EFB) which is abundant in Thailand is used as biomass feedstock. Modeling of the BtM-SOEC is done using Aspen Plus. For technical aspects, the production rate of oxygen and hydrogen from the SOEC can be enhanced through an appropriate adjustment of the number of cells and cell temperature. The BtM-SOEC offers higher methanol yield and overall efficiency, while consumes less energy than the conventional biomass to methanol process (BtM). The maximum methanol production rate of 0.4995 kmol hr<sup>−1</sup> derived from BtM-SOEC is achieved at a number of cells of 325 cells and a cell temperature of 700 °C, at this condition the overall efficiency is 64.79 %. The economic assessment indicates that the conventional BtM and BtM-SOEC are still not economically feasible. However, the conventional BtM is more economically feasible than the BtM-SOEC. The methanol cost of BtM-SOEC can turn out to be economically feasible when renewable electricity cost and SOEC cost decrease substantially. The methanol cost of the BtM-SOEC (620 USD ton<sup>−1</sup>) can be competitive to that of the BtM (703 USD ton<sup>−1</sup>) when the cost of input renewable electricity decreases by 80 %. Consequently, this research highlights the potential of BtM-SOEC from agricultural residues for sustainable bio-methanol production in the future market condition that the cost of renewable electricity tends to continuously decrease with the technology development and increased technology adoption and the carbon policy tends to be tightened to relieve global warming.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133764"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and kinetic studies on steam gasification of oxidized carbon-rich fraction from coal gasification fine slag 煤气化细渣氧化富碳组分蒸汽气化的实验和动力学研究

IF 9 1区工程技术

Energy Pub Date : 2024-11-07 DOI: 10.1016/j.energy.2024.133711

Liang Ren , Yajuan Wu , Yan Gong , Qinghua Guo , Guangsuo Yu , Fuchen Wang

{"title":"Experimental and kinetic studies on steam gasification of oxidized carbon-rich fraction from coal gasification fine slag","authors":"Liang Ren , Yajuan Wu , Yan Gong , Qinghua Guo , Guangsuo Yu , Fuchen Wang","doi":"10.1016/j.energy.2024.133711","DOIUrl":"10.1016/j.energy.2024.133711","url":null,"abstract":"<div><div>Gasification is an important method to realize the resource utilization of coal gasification fine slag (CGFS). In this work, the carbon-rich fraction (CF) of CGFS was modified by oxidation, and the gasification reactivities, structures, and kinetics of samples were studied. The results demonstrate that compared to CF, the gasification characteristic temperatures of oxidized CF are lower, the weight loss rates are faster, and the gasification reactivities are significantly enhanced. These improvements are attributed to the structural evolutions of oxidized CF. Compared with CF, the specific surface area and pore volume of oxidized CF increase by at least 2.5 and 1.5 times, the proportions of oxygen-containing groups rise, and the carbon microstructure of different oxidized CF varies significantly. CF oxidized by steam exhibits the most developed porosity and the most disordered carbon microstructure, corresponding to the highest gasification reactivity of all the samples. The kinetics results showcase that the diffusion reaction model is suitable for describing the gasification process of samples, so porosity emerged as the primary factor determining the gasification reactivity. However, the influence of carbon microstructure and active groups on the gasification reactivity of oxidized CF is enhanced when the porosity meets the diffusion requirements of the gasification reaction.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133711"},"PeriodicalIF":9.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and matching control strategy of electro-hydraulic load-sensitive hydraulic power unit for legged robots 腿部机器人电液负载敏感液压动力单元的设计与匹配控制策略

IF 9 1区工程技术

Energy Pub Date : 2024-11-06 DOI: 10.1016/j.energy.2024.133730

Bin Yu, Huashun Li, Guoliang Ma, Xu Liu, Chunhao Chen, Bohan Zheng, Kaixian Ba, Xiangdong Kong

{"title":"Design and matching control strategy of electro-hydraulic load-sensitive hydraulic power unit for legged robots","authors":"Bin Yu, Huashun Li, Guoliang Ma, Xu Liu, Chunhao Chen, Bohan Zheng, Kaixian Ba, Xiangdong Kong","doi":"10.1016/j.energy.2024.133730","DOIUrl":"10.1016/j.energy.2024.133730","url":null,"abstract":"<div><div>A hydraulic power unit is the core energy source of hydraulic legged robots, ensuring the robot's maneuverability and carrying capacity in complex terrains. However, its pressure and flow output are usually set to a fixed level under all working conditions, which leads to mismatched pressure and flow requirements of hydraulic drive units. This mismatch reduces the stability and control accuracy of the hydraulic drive units and results in significant energy waste. To address these issues, this paper proposes an electro-hydraulic load-sensitive hydraulic power unit and a matching control strategy to better align outputs with requirements, thereby enhancing energy efficiency. Firstly, with the variable speed servo motor driving axial piston pump as the core, the closed system working principle of an electro-hydraulic load-sensitive hydraulic power unit is proposed, and the mathematical model of key components exhibiting strong nonlinearity and time-varying parameters is derived. After that, a matching control strategy based on flow feedforward and pressure difference compensation feedback is proposed. Finally, simulations and experiments are conducted to verify the feasibility of the unit and its matching control strategy. This paper provides a new solution for the design and control of hydraulic power units, laying the groundwork for achieving high-performance hydraulic systems.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"313 ","pages":"Article 133730"},"PeriodicalIF":9.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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