Renewable Energy最新文献

Two-stage distributionally robust optimization model of integrated energy system considering wind–solar joint uncertainties and flexible resources management 考虑风能-太阳能联合不确定性和柔性资源管理的综合能源系统两阶段分布鲁棒优化模型

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-04 DOI: 10.1016/j.renene.2026.125366

Jie Li , Jizhen Liu , Yong Hu , Yansong Zhu , Deliang Zeng , Yunzhi Li

{"title":"Two-stage distributionally robust optimization model of integrated energy system considering wind–solar joint uncertainties and flexible resources management","authors":"Jie Li , Jizhen Liu , Yong Hu , Yansong Zhu , Deliang Zeng , Yunzhi Li","doi":"10.1016/j.renene.2026.125366","DOIUrl":"10.1016/j.renene.2026.125366","url":null,"abstract":"<div><div>As the proportion of renewable energy in new power system continues to grow, wind and solar energy play a significant role in energy conservation and emission reduction. However, the uncertainty of wind and solar leads to insufficient flexibility in integrated energy system (IES), which greatly affects the safe and stable operation of IES. This paper proposes a Copula-based two-stage distributionally robust optimization (CTSDRO) model to improve the flexibility of IES. First, the optimal time-varying Copula function is selected to describe the wind–solar joint uncertainties and to generate sample data, which are applied to construct ambiguity set based on the Wasserstein metric. Subsequently, the proposed model is developed by incorporating affinely adjustable policy and flexible resources management and is reformulated into a tractable model using duality theory and convex optimization techniques. The simulation results show: Compared to the traditional algorithm, the CTSDRO algorithm achieves a balance among economic performance, robustness, and computational efficiency. By incorporating flexible resources into the proposed model, the flexibility shortage is effectively mitigated and the upward flexibility increases by 22 % and the downward flexibility improves by 2.4 times under extreme operating conditions, without sacrificing economic performance.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125366"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186257","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

Scaling solar in dense cities: The availability and affordability of distributed photovoltaics (DSPV) electricity in Shenzhen 在人口密集的城市扩展太阳能：深圳分布式光伏（DSPV）电力的可用性和可负担性

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.renene.2026.125376

Kai Zhang , Peifeng Ma , Yuan Xu

{"title":"Scaling solar in dense cities: The availability and affordability of distributed photovoltaics (DSPV) electricity in Shenzhen","authors":"Kai Zhang , Peifeng Ma , Yuan Xu","doi":"10.1016/j.renene.2026.125376","DOIUrl":"10.1016/j.renene.2026.125376","url":null,"abstract":"<div><div>The availability and affordability of renewable energy are crucial for energy transition. This study develops a geospatial–techno-economic framework to evaluate DSPV potential and costs across Shenzhen's scattered, irregular, and diverse (SID) spaces, focusing on rooftops, building façades, and road noise barriers. Leveraging building vectors with height attributes, a shadow analysis model and solar ray-tracing algorithms were employed to quantify the effects of mutual shading and surface inclination that significantly compromise the capacity factors of PV. High-resolution irradiation data, meteorological parameters, and an irradiation model were utilized. The levelized cost of electricity (LCOE) is analyzed based on installation costs, operational expenses, and other market-driven parameters. The results reveal that rooftops, building facades, and RNBs' PV electricity generation potentials are 21,165 GWh/year, 85,131 GWh/year, and 5.43 GWh/year, respectively, almost equivalent to 94% of Shenzhen's annual electricity demand in 2023. Affordability is a much bigger concern with their LCOE ranges being 0.020–0.421 USD/kWh, 0.058–0.261 USD/kWh, and 0.090–1.404 USD/kWh under different scenarios, respectively. These findings illustrate that spatial constraints in dense cities not only affect the availability of solar electricity but also, more importantly, its affordability.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125376"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186241","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

Wind tunnel investigation of heliostat field wind loads and load reduction measures 定日镜现场风荷载的风洞研究及减载措施

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.renene.2026.125395

Zihang Yang , Yangzhao Liu , Ying Chang , Kaoshan Dai , Jie Zhong , Erhan Huang , Zhen Li , Songgang Li , Matiyas A. Bezabeh

{"title":"Wind tunnel investigation of heliostat field wind loads and load reduction measures","authors":"Zihang Yang , Yangzhao Liu , Ying Chang , Kaoshan Dai , Jie Zhong , Erhan Huang , Zhen Li , Songgang Li , Matiyas A. Bezabeh","doi":"10.1016/j.renene.2026.125395","DOIUrl":"10.1016/j.renene.2026.125395","url":null,"abstract":"<div><div>Most prior wind tunnel investigations of heliostats have focused on isolated units. However, in real-world engineering scenarios, heliostats are typically arranged in rows to maximize efficiency, and the aerodynamic properties of multiple heliostats differ substantially from those of an independent or single heliostat. In this study, wind loads in a heliostat field were evaluated using a new type of rectangular heliostat model at multiple locations within the field. On the basis of wind tunnel testing of the heliostat field, a commonly used operating elevation angle of 40° was selected as the most representative elevation angle, and the wind loads of heliostats at different positions in the heliostat field as well as load-mitigation strategies were investigated. The test results showed that the heliostat field could be qualitatively decomposed into two regions, namely an interior region and an edge region, and the worst-case-scenario forces and moments for each heliostat in the interior region were largely identical. On this basis, two wind load reduction measures were considered: optimizing array arrangement at a fixed field density and employing wind fences. The heliostat field exhibited a typical “edge high, internal low” trend in its wind load coefficients. At a given heliostat field density, variation of heliostat structure arrangements had a substantial impact on wind effects. Based on the results, the generalized blockage ratio formula proposed by Peterka et al. was improved, thereby allowing wind load reduction through variations in field arrangement at the same density. In addition, it was found that a wind fence reduces wind loads mainly for edge region heliostats, similarly to adding an upstream heliostat row.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125395"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186372","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

Financial globalization and energy transition: Insights from 149 countries 金融全球化与能源转型：来自149个国家的见解

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.renene.2026.125418

Mingming Zhang , Mengyao Cui , Liyun Liu , Dequn Zhou

{"title":"Financial globalization and energy transition: Insights from 149 countries","authors":"Mingming Zhang , Mengyao Cui , Liyun Liu , Dequn Zhou","doi":"10.1016/j.renene.2026.125418","DOIUrl":"10.1016/j.renene.2026.125418","url":null,"abstract":"<div><div>The energy transition is continuously accelerating worldwide. Financial globalization, related to financing source, investment risk and technology transfer, affects energy transition. This study examines the impact of financial globalization on energy transitions by considering financial globalization using overall, de facto, and de jure measures. A comprehensive energy transition index is constructed based on 3E (energy, environment, and economy) theory. Data from between 2000 and 2019 are collected from 149 countries. A quantile regression panel data model is used and compared with a fixed effects model. The results show that financial globalization has a negative effect on energy transition in medium-energy transition countries but has a positive effect in low- and high-energy transition countries. The impact of financial globalization on energy transition in Europe is higher than that on other continents. The role of financial globalization in Belt and Road countries is more obvious; the Paris Agreement has optimized the role of financial globalization. Financial globalization plays a positive role in countries with low renewable energy consumption and in regions with low degrees of capital formation. Relevant governments should promote financial globalization, optimize the allocation of financial resource, formulate differentiated transition policies and strengthen financial risk management to promote energy transition.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125418"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186318","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

A novel grid-integration strategy for impulsive wave generation with electric-hydrogen system 一种新的电氢系统脉冲波发电并网策略

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.renene.2026.125385

Zhongnan Feng , Xiangning Lin , Fanrong Wei , Quan Sui , Hong Xiang , Kun Yu

{"title":"A novel grid-integration strategy for impulsive wave generation with electric-hydrogen system","authors":"Zhongnan Feng , Xiangning Lin , Fanrong Wei , Quan Sui , Hong Xiang , Kun Yu","doi":"10.1016/j.renene.2026.125385","DOIUrl":"10.1016/j.renene.2026.125385","url":null,"abstract":"<div><div>Due to the inherent characteristics of wave resources, wave energy generation (WEG) exhibits impulsive characteristics that needs to be smoothed out before being utilized. The degradation loss of a single battery system to consume the impulsive power is significant. Considering the high energy density and storage portability of hydrogen, a hybrid system combining battery and flexible water electrolysis system is a promising choice for wave energy consumption. However, more diverse and complex consumption devices will introduce more operational conflicts and coordination challenges. Therefore, the paper firstly explores the dynamic characteristics of WEG, taking into account the comprehensive external environment and internal control factors. Then, the contradictory boundaries and collaborated domains between the characteristics of impulsive WEG and the consumption devices are clarified through theoretical analysis. Subsequently, a movable electric-hydrogen supplier (MEHS) powered by wave energy was proposed. Considering the requirements of internal multi-energy flow coupling and external multi-spatiotemporal interaction, a scheduling model is established to schedule energy capture, storage, and supply behavior of MEHS. The simulation results show that the proposed flexible scheduling framework can effectively match the dynamic characteristics of different devices, and maximize the utilization of wave energy resources for island microgrids.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125385"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186319","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

Cascade hydropower retrofitting for pumped storage in high-penetration renewable energy systems: Techno-economic perspectives 高渗透可再生能源系统中抽水蓄能梯级水电改造：技术经济视角

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.renene.2026.125386

Zhenni Wang , Qiaofeng Tan , Xin Wen , Huaying Su , Guohua Fang , Hao Wang

{"title":"Cascade hydropower retrofitting for pumped storage in high-penetration renewable energy systems: Techno-economic perspectives","authors":"Zhenni Wang , Qiaofeng Tan , Xin Wen , Huaying Su , Guohua Fang , Hao Wang","doi":"10.1016/j.renene.2026.125386","DOIUrl":"10.1016/j.renene.2026.125386","url":null,"abstract":"<div><div>Retrofitting hydropower plants with pumping stations (HPSH-P), reversible units (HPSH-PT), or new reservoirs (PSH) is critical for boosting grid flexibility and variable renewable energy (VRE) integration. However, comparative multi-scale operational characteristics and techno-economic trade-offs among these pathways remain underexplored. This study develops a scheduling model that captures multi-scale regulation for these retrofitting approaches, driven by a net-load-based time-of-use price curve. The performance of different pathways is further evaluated through techno-economic and sensitivity analyses, considering hydrological inflows, economic parameters, and round-trip efficiency. A Southwest China case study reveals that HPSH-P provides a cost-effective near-term solution for capital-constrained or low-capacity-factor plants. In contrast, HPSH-PT achieves a peak net present value of 7.0 billion CNY by effectively leveraging existing storage and expanded capacity at moderate investment. While PSH delivers superior technical performance, with an overall energy conversion efficiency of 79.8%, a VRE curtailment absorption rate of 9.9%, and an annual greenhouse gas reduction of 10.5 Mt CO<sub>2</sub>-eq, substantial capital costs for new reservoirs raise its break-even threshold. Notably, all schemes at their optimal capacities exhibit competitive levelized cost of energy (LCOE) below 200 CNY/MWh. These findings provide a systematic framework for transforming conventional hydropower into flexible, low-carbon energy storage assets.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125386"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186259","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

Simultaneous saccharification and co-fermentation of dilute acid co-pretreated corn straw and tapioca starch with low enzyme dosage for enhanced lipid production by Cutaneotrichosporon oleaginosum 低酶量稀酸共预处理玉米秸秆与木薯淀粉同时糖化共发酵，提高油酸三磷酸皮霉产脂率

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.renene.2026.125343

Shujiang Ran , Yanan Wang , Wenting Zhou , Tianyan Zhong , Bo Wu , Zhengzai Cheng , Zhiwei Gong

{"title":"Simultaneous saccharification and co-fermentation of dilute acid co-pretreated corn straw and tapioca starch with low enzyme dosage for enhanced lipid production by Cutaneotrichosporon oleaginosum","authors":"Shujiang Ran , Yanan Wang , Wenting Zhou , Tianyan Zhong , Bo Wu , Zhengzai Cheng , Zhiwei Gong","doi":"10.1016/j.renene.2026.125343","DOIUrl":"10.1016/j.renene.2026.125343","url":null,"abstract":"<div><div>Due to the structural recalcitrance and relatively high nitrogen content of corn straw, the supplementation of additional carbon sources is probably meaningful to alleviate sugar limitation during the simultaneous saccharification and co-fermentation (SSCF) and increase the carbon-to-nitrogen ratio beneficial for lipid overproduction by oleaginous yeasts. Here, the dilute sulfuric acid co-pretreatment of a corn straw and tapioca starch mixture as co-substrates, followed by direct SSCF without detoxification, was first described for lipid production by <em>Cutaneotrichosporon oleaginosum</em>. Tapioca starch was almost completely degraded into fermentable sugars via the dilute acid co-pretreatment, which provided sufficient initial sugars for microorganisms. The combination of co-pretreatment with the SSCF using a mixed substrate of 40 g/L corn straw and 40 g/L tapioca starch allowed an extremely low enzyme dosage of 1 FPU/g for lipid production, resulting in 12.7 g/L of lipid and 0.11 g/L/h of lipid productivity. The biodiesel parameters of the lipids produced by <em>C. oleaginosum</em> matched those of the European and U.S. biodiesel standards. This study provides a novel combination strategy to simplify the process, reduce enzyme input, and improve lipid production, which is valuable for the commercial viability of lipid technology.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125343"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186246","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

Numerical investigation on the hydrodynamics and wake characteristics of ducted and bare tidal turbines under wave conditions 波浪条件下导管式和裸露式潮汐涡轮机水动力和尾迹特性的数值研究

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.renene.2026.125398

Yunlei Mei , Fengmei Jing , Xinru Wang , Bin Guo , Qiang Lu

{"title":"Numerical investigation on the hydrodynamics and wake characteristics of ducted and bare tidal turbines under wave conditions","authors":"Yunlei Mei , Fengmei Jing , Xinru Wang , Bin Guo , Qiang Lu","doi":"10.1016/j.renene.2026.125398","DOIUrl":"10.1016/j.renene.2026.125398","url":null,"abstract":"<div><div>This study uses computational fluid dynamics to compare the hydrodynamics and wake characteristics of a bare turbine versus a ducted turbine under wave conditions. By developing and validating a coupled wave-current numerical model, this study systematically analyses the influence of wave and submergence depth on the loadings, power output, and wake evolution of both turbines. The results show that the ducted turbine achieved a higher average power output and effectively suppressed the fluctuations in rotor thrust and power. Across the investigated cases, the ducted turbine achieves an average power coefficient about 65%-69% higher than the bare turbine, with a more evident advantage at higher wave heights. Concerning the wake characteristics, compared to the bare turbine, the near-wake diameter of the ducted turbine increased by approximately 60%, exhibiting a more pronounced velocity deficit, with a maximum difference of approximately 40% at 2D downstream. However, its wake recovered faster, exceeding the bare turbine's wake recovery level by 8D downstream. Furthermore, the influence of waves on wake recovery was limited, improving the recovery rate by approximately 8% within the parameter range of this study. The findings indicate that the ducted turbine provides superior overall performance in wave environments; however, its structural design must prioritise the dynamic loads induced by waves. This study provides theoretical insights and data support for the design and array arrangement of ducted turbines in complex marine environments.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125398"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186368","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

Spectral-absorptance-based temperature model and its differentiated performance in commercial crystalline silicon PV modules 基于光谱吸收的温度模型及其在商用晶硅光伏组件中的差异化性能

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-06 DOI: 10.1016/j.renene.2026.125401

Xinyue Cao , Yifan Xu , Min Gui , Yanfang Zhou , Xiang'an Zeng , Zhen Zhang , Ming Liu , Lei Wang , Junzhi Yan , Jianing Cao

{"title":"Spectral-absorptance-based temperature model and its differentiated performance in commercial crystalline silicon PV modules","authors":"Xinyue Cao , Yifan Xu , Min Gui , Yanfang Zhou , Xiang'an Zeng , Zhen Zhang , Ming Liu , Lei Wang , Junzhi Yan , Jianing Cao","doi":"10.1016/j.renene.2026.125401","DOIUrl":"10.1016/j.renene.2026.125401","url":null,"abstract":"<div><div>This study proposes a spectral-corrected PV module temperature model that explicitly accounts for wavelength-dependent absorption over 280–2500 nm, including sub-bandgap absorption as a direct thermal source. The model is parameterized using measured absorptance spectra of bifacial PERC, HJT, and TOPCon modules and validated with outdoor measurements from six commercial modules. The results demonstrate improved predictive performance, with root-mean-square errors reduced by up to 0.11 for PERC modules and maximum temperature deviations limited to 1.64 °C. Incorporating spectral absorption consistently enhances temperature prediction accuracy and mitigates systematic bias across a wide range of irradiance levels, air masses, and ground reflectance conditions. Neglecting spectral mismatch leads to temperature overestimation of up to 0.3 °C at large air masses (AM 10), while installation-related effects further amplify deviations to 0.94 °C over high-albedo surfaces such as snow. Beyond accuracy gains, the model reveals distinct technology-dependent thermal behavior, with HJT modules operating at slightly higher temperatures than PERC and TOPCon, and these differences becoming more pronounced under high irradiance and high-albedo environments.Overall, the proposed approach provides a physically consistent framework for PV thermal modeling, enabling more reliable temperature inputs for energy yield simulations and improved assessment of temperature-driven degradation risks in modern crystalline-silicon PV systems.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125401"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186324","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

An improved discrete equivalent circuit model for power assessment of bifacial half-cell photovoltaic module under front shading 正面遮阳下双面半电池光伏组件功率评估的改进离散等效电路模型

IF 9.1 1区工程技术

Renewable Energy Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.renene.2026.125389

Shi-Jie Xu , Shuang-Ying Wu , Lan Xiao , Yan Hu

{"title":"An improved discrete equivalent circuit model for power assessment of bifacial half-cell photovoltaic module under front shading","authors":"Shi-Jie Xu , Shuang-Ying Wu , Lan Xiao , Yan Hu","doi":"10.1016/j.renene.2026.125389","DOIUrl":"10.1016/j.renene.2026.125389","url":null,"abstract":"<div><div>Bifacial photovoltaic modules may operate under partial shading conditions, making the electrical characteristics assessment modeling particularly important. This study aimed to develop and validate an improved discrete equivalent circuit model for bifacial half-cell photovoltaic modules that explicitly accounts for non-uniform irradiance and temperature at half-cell element level. The detailed topological circuit of bifacial half-cell photovoltaic module was implemented in MATLAB/Simulink and bidirectionally coupled with the thermal field of each half-cell element obtained from finite-volume model, enabling dynamic thermal-electrical coupling simulation under front shading conditions. The model validation was conducted through outdoor experiments under different front shading ratios and patterns, and comparisons with conventional discrete equivalent circuit and average temperature models. The results show that average temperature and conventional discrete equivalent circuit models are more suitable for predicting electrical power under non-shading conditions and cannot accurately reflect the circuit reconstruction and nonlinear current-voltage features caused by partial shading. However, improved discrete equivalent circuit model accurately restores non-uniform irradiance and temperature distributions, captures the activation of bypass diodes and the associated multi-knees current-voltage behavior. The average relative error of power and root mean square error of current are less than 6.5% and 0.56 A, respectively, for different operating conditions. This study provides a half-cell element-based modeling approach for evaluating the electrical performance of bifacial half-cell photovoltaic module, offering guidance for module layout design, shaded operation, and accurate power output prediction of bifacial photovoltaic systems.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"262 ","pages":"Article 125389"},"PeriodicalIF":9.1,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186325","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