Article
Energy & Fuels
Paolo Marocco, Domenico Ferrero, Andrea Lanzini, Massimo Santarelli
Summary: The optimal design of off-grid hybrid renewable energy systems (HRESs) is a challenging task, which often involves conflicting goals to be faced. In this work, the epsilon-constraint method and particle swarm optimization algorithm are used to simultaneously address the levelized cost of energy (LCOE) and CO2 emissions. The cost-emissions Pareto fronts of different HRES configurations are developed to gain greater awareness about the potential of renewable-based energy systems in off-grid applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Paolo Marocco, Domenico Ferrero, Andrea Lanzini, Massimo Santarelli
Summary: The article analyses different system configurations using renewable energy in off-grid areas, comparing the cost-effectiveness of energy storage solutions. Using the Ginostra village on Stromboli Island in Italy as a case study, the renewable energy solution was found to be economically preferable to diesel generators.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
O. M. Babatunde, J. L. Munda, Y. Hamam
Summary: This study analyzed the techno-economic feasibility of incorporating hydrogen storage devices in solar PV/micro wind turbine/fuel cell energy systems at two locations in sub-Saharan Africa using a hybrid optimization model. The results showed that the optimal energy systems for Nigeria and South Africa both included PV/FC/electrolyzer/battery/hydrogen storage systems with specific tracking orientations, highlighting the importance of solar tracking configurations in energy system design.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Anisa Emrani, Asmae Berrada, Ameur Arechkik, Mohamed Bakhouya
Summary: This study investigates the optimal design and operation of a new energy storage system called gravity energy storage (GES) integrated with large-scale renewable energy plants. The results show that the hybrid PV-wind-GES system is the best option in terms of reliability and economic benefits.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Mehrdad Gholami, Omkolsoom Shahryari, Navid Rezaei, Hassan Bevrani
Summary: This paper presents a method to estimate the required battery capacity in the design phase of a wind farm based on wind speed data and turbines position. The method considers wake effect, turbulence, and spatial smoothing to estimate the short-term fluctuation of wind farm power. It also presents a method to estimate the optimum battery capacity based on statistical characteristics of wind farm power. Additionally, a new model is presented to estimate the battery lifetime in the case of non-uniform charge/discharge cycles. The numerical results show the effectiveness of the proposed approach in determining the optimum battery capacity.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Alejandro Ibanez-Rioja, Lauri Jarvinen, Pietari Puranen, Antti Kosonen, Vesa Ruuskanen, Katja Hynynen, Jero Ahola, Pertti Kauranen
Summary: This paper investigates the concept of an off-grid alkaline water electrolyzer plant integrated with solar photovoltaic (PV), wind power, and a battery energy storage system (BESS). The operation of the plant is simulated over 30 years based on measured power generation data. The study finds that wind power is the most economical solution for the off-grid alkaline system until the installation years 2035-2040.
Article
Thermodynamics
Lingkang Jin, Mose Rossi, Andrea Monforti Ferrario, Jacopo Carlo Alberizzi, Massimiliano Renzi, Gabriele Comodi
Summary: The energy transition is promoting the development of local energy communities based on renewable energy systems combined with energy storage systems. The study of energy storage systems is crucial to ensure proper energy coverage due to the intermittent nature of renewables, and this work focuses on the off-grid operation of a local energy community powered by a small-scale hydropower plant, comparing the use of a battery energy storage system and a hydrogen one.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Sergio B. Sepulveda-Mora, Steven Hegedus
Summary: This study conducted a resilience analysis of renewable energy hybrid microgrids with different building types, finding that the combination of photovoltaic and battery systems can enhance the resilience of electric power systems. The study compared the impact of weather and load patterns on resilience and proposed a method for selecting the worst and best-case outage scenarios. It also discovered that the type of load, location, and the combination of photovoltaic and battery systems have different effects on the resilience of electric power systems.
Article
Green & Sustainable Science & Technology
Muhammad Shahzad Javed, Jakub Jurasz, Mohammad Guezgouz, Fausto A. Canales, Tyler H. Ruggles, Tao Ma
Summary: It is a challenge to fully power large-scale grids with intermittent renewable energy due to technical and economic difficulties. However, with the decrease in the cost of renewable off-grid systems, there has been an increase in real-world implementations and studies on optimal capacity sizing. This study shows that considering extended simulation periods improves the reliability and robustness of renewable energy systems, and underestimating energy storage capacities in off-grid systems can affect their long-term sustainability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Chaowanan Jamroen, Pokkrong Vongkoon
Summary: This study proposes a power control strategy that incorporates state-of-charge (SoC) management to improve the reliability of off-grid residential PV-BES systems. The simulation results show that BES power management with SoC management can significantly reduce BES capacity and levelized cost of energy (LCOE) compared to conventional strategies.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Jakub Jurasz, Mohammed Guezgouz, Pietro E. Campana, Alexander Kies
Summary: Access to electricity through large scale power grids is a solution for renewable power systems but faces technical, economical, and geopolitical challenges. Millions of people rely on autonomous solutions due to limited access to electricity. Recent studies focus on optimal sizing of off-grid renewable systems with decreasing costs. However, these studies often overlook the correlation between renewable energy availability and demand variability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Ruo Huan Yang, Jian Xun Jin, Qian Zhou, Meng Xiao
Summary: This paper proposes a novel cascaded topology of SMES/battery hybrid energy storage system, which solves some problems in existing systems while retaining the advantages of traditional systems. Simulations and experiments are conducted to verify the performance of this system, showing good results.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Multidisciplinary Sciences
Oliver O. Apeh, Edson L. Meyer, Ochuko K. Overen
Summary: The study focuses on analyzing and experimenting with off-grid systems, comparing different battery capacities and charging strategies. Results indicate variations in MPPT tracking efficiency and electrical energy consumption.
Article
Green & Sustainable Science & Technology
Mostafa Naemi, Dominic Davis, Michael J. Brear
Summary: This paper examines the optimal performance of a wind farm and integrated battery storage system in a wholesale electricity market, considering participation in both energy and FCAS markets as well as imperfect generation forecasting. It is found that advanced approaches to integration and control can provide significant financial benefits and improve the wind farm's ability to regulate its own power generation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Quantum Science & Technology
Chang-Kang Hu, Jiawei Qiu, Paulo J. P. Souza, Jiahao Yuan, Yuxuan Zhou, Libo Zhang, Ji Chu, Xianchuang Pan, Ling Hu, Jian Li, Yuan Xu, Youpeng Zhong, Song Liu, Fei Yan, Dian Tan, R. Bachelard, C. J. Villas-Boas, Alan C. Santos, Dapeng Yu
Summary: In this study, we experimentally verified a quantum battery based on superconducting qutrit, which achieves stable and powerful charging processes by exploring dark and bright states. The battery exhibits a self-discharge mechanism similar to that of a supercapacitor. These results pave the way for proposing new superconducting circuits capable of storing extractable work.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Wang Xiang, Weijia Yuan, Lie Xu, Eoin Hodge, John Fitzgerald, Paul McKeever, Keith Bell
Summary: This paper presents a feasibility study of an offshore wind farm HVDC integration system using high-temperature superconductor DC cables. The proposed system shows effective current limiting capability against fast DC fault transients.
IEEE TRANSACTIONS ON ENERGY CONVERSION
(2022)
Article
Engineering, Electrical & Electronic
Abdelrahman Elwakeel, Neville McNeill, Rafael Pena-Alzola, Min Zhang, Weijia Yuan
Summary: This article describes the development and implementation of a cryogenic DC/DC converter for supplying a DC excitation current of 500 A for superconducting magnet applications. The practical aspects and rationale behind selecting a specific topology are discussed, along with experimental results and an estimated ripple content in the load current.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Engineering, Electrical & Electronic
Muhammad Haseeb Iftikhar, Jianzhao Geng, Weijia Yuan, Min Zhang
Summary: In this article, we demonstrate a novel flux pumping technique using a noninductive bifilar bridge, which can effectively pump dc currents equal to the critical current for large HTS magnets.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Physics, Applied
Muhammad Iftikhar, Min Zhang, Weijia Yuan
Summary: This study presents a feedback-controlled flux modulation technique for high-temperature superconducting (HTS) magnets in persistent current operations. By combining flux pumps with HTS persistent current operation, this technology achieves precise injection and reduction of HTS magnet current, eliminating the need for power supplies and current leads. This opens up new possibilities for stable magnetic field generation in HTS magnet designs.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Abdelrahman Elwakeel, Ercan Ertekin, Mariam Elshiekh, Muhammad Iftikhar, Weijia Yuan, Min Zhang
Summary: In order to reduce emissions from the aviation industry and meet the targets set by different countries, research has been focused on investigating all-electric aircraft. Superconducting machines are expected to power the propellers, as they are smaller and lighter than conventional machines. The main purpose of this paper is to study a reliable holistic protection system for all-electric aircraft; that can reduce heat leakage and be able to detect faults reliably.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
Pavan Chaganti, Weijia Yuan, Min Zhang, Lie Xu, Eoin Hodge, John Fitzgerald
Summary: The carbon neutrality goal of achieving net-zero by 2050 has led to interest in offshore wind farms located more than 100 km away from the seashore. As a result, underground power transmission infrastructure is necessary, and a high-voltage direct-current (HVDC) system is chosen due to its low losses and long cable length. The HVDC cables are made of high-temperature superconductor (HTS) material, which has transient behavior that can lead to damage under fault conditions. This study develops a MATLAB/Simscape model for an HTS HVDC cable and evaluates its parameters under transient conditions.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Physics, Applied
Hengpei Liao, Anthony R. Dennis, Weijia Yuan, Min Zhang
Summary: In this study, the magnetization characteristics of HTS-stacked ring magnets were investigated. It was found that the trapped field in the magnets was higher than the applied field during field cooling magnetization. By inserting HTS stacks into the hollow cavity of the ring magnets, the center field no longer exhibited an increased value. These findings have important implications for the design and application of superconducting magnets.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Computer Science, Information Systems
Abdelrahman Elwakeel, Neville Mcneill, Rafael Pena Alzola, Ravi Kiran Surapaneni, Gowtham Galla, Ludovic Ybanez, Min Zhang, Weijia Yuan
Summary: Cryogenic propulsion with hydrogen fuel cells is a promising solution for reducing carbon emissions in aviation. This article tests devices suitable for power electronic converters supplying a 1.6 MW superconducting machine and compares the performance of SiC MOSFET and Si IGBT modules at different temperatures. The study found that SLC technology has better performance in low temperatures.
Article
Energy & Fuels
Qingqing Yang, Jianwei Li, Ruixin Yang, Jin Zhu, Xuechao Wang, Hongwen He
Summary: This paper presents a new hybrid scheme using EV and local batteries to actively participate in grid services, improving optimal power scheduling and battery aging control in a microgrid environment.
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
