Ain Shams Engineering Journal最新文献

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Study on the operational reliability of hydraulic support with clearances based on mechanical-hydraulic interaction 基于机液相互作用的带间隙液压支架工作可靠性研究
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-24 DOI: 10.1016/j.asej.2026.104036
Xiaowan Lei , Zhaosheng Meng , Qingliang Zeng , Lirong Wan , Chen Ma
{"title":"Study on the operational reliability of hydraulic support with clearances based on mechanical-hydraulic interaction","authors":"Xiaowan Lei ,&nbsp;Zhaosheng Meng ,&nbsp;Qingliang Zeng ,&nbsp;Lirong Wan ,&nbsp;Chen Ma","doi":"10.1016/j.asej.2026.104036","DOIUrl":"10.1016/j.asej.2026.104036","url":null,"abstract":"<div><div>Hydraulic supports are core equipment in fully mechanized coal mining faces. However, unavoidable hinge joint clearances resulting from manufacturing tolerances can degrade bearing state and reduce operational reliability. This paper establishes a co-simulation model of the mechanical-hydraulic interaction to address the aforementioned issues. The simulation model’s reliability is experimentally validated. Based on this, the effects of variations in the hinge joint clearance parameter (position and value) on the support’s motion status, structural displacement, and posture angles are investigated. The results indicate that the clearance magnitude is the primary determinant of the column’s operating status. The intensity of pressure fluctuations within the cylinder chamber exhibits a strong positive correlation with the clearance size, achieving an average correlation coefficient of 0.98. Furthermore, hinge joint clearances significantly degrade motion accuracy and induce distinct directional posture trends: a clearance at hinge joint a results in a “nosing-down” trend of approximately 0.3°, whereas clearances at other positions induce a “nosing-up” trend of approximately 0.39°. Additionally, clearances at all locations lead to a reduction in the centroid displacement of structural components; notably, at a 5 mm clearance, the front link exhibits a maximum vertical displacement reduction of 17 mm. Finally, within the examined parameter range, the overall operational reliability of the hydraulic support remains controllable, with the kinematic reliability index <span><math><msub><mi>η</mi><mi>k</mi></msub></math></span> maintained above 0.93 and the dynamic stability index <span><math><msub><mi>η</mi><mi>d</mi></msub></math></span> exceeding 0.95. These findings provide quantitative insights into the operational status and reliability assessment of supports with hinge joint clearances.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 104036"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147422173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Complemented input matching model for accurate and Timely emotion recognition 一种新的互补输入匹配模型,用于准确和及时的情绪识别
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.asej.2026.103987
Monia Hamdi , Noha Alduaiji , Mourad Elloumi , Somia Asklany , Fayha Almutairy , Naif M. Alotaibi , Amr Yousef , Ghulam Abbas
{"title":"A novel Complemented input matching model for accurate and Timely emotion recognition","authors":"Monia Hamdi ,&nbsp;Noha Alduaiji ,&nbsp;Mourad Elloumi ,&nbsp;Somia Asklany ,&nbsp;Fayha Almutairy ,&nbsp;Naif M. Alotaibi ,&nbsp;Amr Yousef ,&nbsp;Ghulam Abbas","doi":"10.1016/j.asej.2026.103987","DOIUrl":"10.1016/j.asej.2026.103987","url":null,"abstract":"<div><div>Emotion identification is a fundamental requirement for patient-centered healthcare, as it enables prompt understanding of patients’ emotional states during clinical care. Patient suffering and rehabilitation stress are increased by the current methods’ incapacity to swiftly and accurately identify emotions based on hand and facial movement analysis. To address this problem, this study proposes the Complemented Input Matching Model (CIMM), which aims to achieve accurate emotion recognition with low processing delay. The proposed model employs a multi-data fusion strategy that integrates temporal emotion data with expected isolation inputs to reduce combinatorial errors and improve decision-making efficacy. Trials are conducted to define emotions using EEG and ECG signals from an updated publicly available dataset collected from 50 individuals at 20-second intervals and sorted into 180–200 labels. A variety of fusion events, including error-free and time-efficient examples, are identified using both existing and prior isolation techniques. The performance of the proposed model is evaluated using metrics such as fusion ratio, accessibility, accuracy, mistake rate, and time required. Experimental results demonstrate the effectiveness of the CIMM for accurate and efficient emotion recognition in healthcare settings, with a 10.65% improvement in fusion ratio, an 8.72% increase in accessibility, a 9.34% increase in precision, a 9.35% decrease in error, and an 8.87% reduction in time requirement across various data instances.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 103987"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Fractional MHD analysis of Oldroyd–B fluid with variable thermal conductivity and thermoelectric coupling 变导热系数和热电耦合的Oldroyd-B流体的分数MHD分析
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-03 DOI: 10.1016/j.asej.2026.103997
Mumtaz Khan , Mudassar Imran , Muhammad Shoaib Anwar
{"title":"Fractional MHD analysis of Oldroyd–B fluid with variable thermal conductivity and thermoelectric coupling","authors":"Mumtaz Khan ,&nbsp;Mudassar Imran ,&nbsp;Muhammad Shoaib Anwar","doi":"10.1016/j.asej.2026.103997","DOIUrl":"10.1016/j.asej.2026.103997","url":null,"abstract":"<div><div>Fractional models have emerged as powerful tools for capturing the intricate physical dynamics of systems where memory effects play a crucial role. This study investigates the unsteady magnetohydrodynamic (MHD) flow and heat transfer of a fractional Oldroyd–B fluid between parallel plates. The model incorporates Caputo fractional derivatives (<span><math><mn>0</mn><mo>&lt;</mo><mi>α</mi><mo>,</mo><mi>β</mi><mo>,</mo><mi>γ</mi><mo>&lt;</mo><mn>1</mn></math></span>) to capture viscoelastic memory effects, along with variable thermal conductivity, fractional Joule heating, and thermo-electrical coupling via the Seebeck effect. A hybrid numerical scheme—combining Galerkin finite elements for spatial discretization with the L1 finite-difference approximation for fractional derivatives—is developed and validated through rigorous error analysis, demonstrating second-order spatial convergence in <span><math><msup><mi>L</mi><mn>2</mn></msup></math></span> and <span><math><msup><mi>H</mi><mn>1</mn></msup></math></span> norms. Parametric analysis demonstrates that the transverse magnetic field significantly retards the flow, increasing skin friction by 22.58%, while increasing the variable thermal conductivity parameter enhances the wall heat transfer rate by 39.80%. In contrast, the Seebeck effect and electric body force are observed to assist the flow, thereby reducing wall shear stress, whereas internal heat generation diminishes the local Nusselt number. Additionally, the fractional relaxation and retardation parameters exhibit opposing effects on the velocity boundary layer thickness. These findings provide precise theoretical benchmarks for optimizing thermal management in electromagnetic viscoelastic processing.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 103997"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Soil infiltration prediction using gradient boosted decision tree, extreme gradient boosting, and physics-informed neural networks 利用梯度增强决策树、极端梯度增强和物理信息神经网络进行土壤入渗预测
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-18 DOI: 10.1016/j.asej.2026.104042
Hassan A. Saleem , Mohammed M. Farran , Milad Masoud , Amro M. Elfeki
{"title":"Soil infiltration prediction using gradient boosted decision tree, extreme gradient boosting, and physics-informed neural networks","authors":"Hassan A. Saleem ,&nbsp;Mohammed M. Farran ,&nbsp;Milad Masoud ,&nbsp;Amro M. Elfeki","doi":"10.1016/j.asej.2026.104042","DOIUrl":"10.1016/j.asej.2026.104042","url":null,"abstract":"<div><div>Accurate estimation of soil infiltration is essential for runoff modeling and groundwater recharge assessment, yet it remains difficult because of soil heterogeneity and limited field observations. This study develops and evaluates a physics-consistent deep-learning framework for predicting field-scale infiltration by integrating analytical infiltration theory with advanced machine-learning techniques. Infiltration dynamics are learned indirectly from analytically generated solutions of Horton’s and Philip’s models, calibrated using 25 double-ring infiltrometer tests from Jazan Province, Saudi Arabia, rather than by repeatedly fitting raw field measurements. This strategy preserves the physical meaning of analytical models while enabling transferable generalization across sites. In addition, a novel Physics-Informed Neural Network boundary-treatment strategy is proposed, where boundary conditions are inferred using Taylor-expansion-based interpolation at late-time infiltration as the system approaches hydraulic equilibrium. Extreme Gradient Boosting and Gradient Boosted Decision Tree models achieved high numerical accuracy, reproducing analytical infiltration curves with root-mean-square errors between 10⁻<sup>5</sup> and 0.3 cm min⁻<sup>1</sup>.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 104042"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147422181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Integrating deep learning and big data analytics for enhanced smart city infrastructure and human resource management systems 整合深度学习和大数据分析,增强智慧城市基础设施和人力资源管理系统
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-19 DOI: 10.1016/j.asej.2025.103962
Jianjun Zhang , Ao Zhang , Xingying Liu , Pan Luo
{"title":"Integrating deep learning and big data analytics for enhanced smart city infrastructure and human resource management systems","authors":"Jianjun Zhang ,&nbsp;Ao Zhang ,&nbsp;Xingying Liu ,&nbsp;Pan Luo","doi":"10.1016/j.asej.2025.103962","DOIUrl":"10.1016/j.asej.2025.103962","url":null,"abstract":"<div><div>In this paper, a framework has been proposed based on EfficientNet with big data analytics to solve the problems in smart city infrastructure and human resource management systems (HRMS). As a result of efficient performance on various datasets such as NYC Taxi Trip Records, IBM HR Analytics Employee Attrition Dataset, and London Smart Meters Dataset, we apply EfficientNet’s compound scaling and squeeze-and-excitation techniques with fast scalable big data pipelines to further enhance predictive performance. The proposed system gives results that clearly outperform five recent state-of-the-art methods with accuracy of 92.3%, a micro F1-score of 90.1%, and an MCC of 0.85 and exhibits its robust scalability with the growing dataset sizes. The methodology combines deep learning and big data analytics to improve predictive performance. The study spotlights its strengths and limitations (such as interpretability and computational costs) of deep learning methods and points out potential future directions including explainable AI and distributed training frameworks. By connecting theoretical innovation with practical implementation, this research provides an innovative solution for optimal dynamic multi-task assignment in urban environments realizing smart cities and urban settlements, and workforce management strategies for the modern world of data.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 103962"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147422250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 cryptographic framework using quasi-parastrophes and weak inverse transformations of quasigroups 利用拟反和拟群的弱逆变换的密码框架
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-25 DOI: 10.1016/j.asej.2026.104060
Mohammad Mazyad Hazzazi , Muhammad Nadeem , Muhammad Kamran , Amina Ramzan , Md. Ashraful Alam , M.I. Elashiry
{"title":"A cryptographic framework using quasi-parastrophes and weak inverse transformations of quasigroups","authors":"Mohammad Mazyad Hazzazi ,&nbsp;Muhammad Nadeem ,&nbsp;Muhammad Kamran ,&nbsp;Amina Ramzan ,&nbsp;Md. Ashraful Alam ,&nbsp;M.I. Elashiry","doi":"10.1016/j.asej.2026.104060","DOIUrl":"10.1016/j.asej.2026.104060","url":null,"abstract":"<div><div>Intelligent systems need cryptography for safeguarding data, models, and means of communication against hostile attacks, tampering, and unauthorized entry. In furtherance of enabling privacy-preserving approaches essential for AI-driven environments, it encourages trust in automated decision-making by protecting secrecy, integrity, and authenticity. In a more closely integrated world, current cryptography serves as vital for preserving sensitive data, banking activities, and digital communication by maintaining secrecy, truthfulness, reliability, and non-repudiation. It is a cornerstone of trust in the digital era since it maintains the security of modern technologies like computing in the cloud, blockchain, and the internet of things. This paper provides not only the quasi-parastrophes <span><math><mo>(</mo><msub><mi>Θ</mi><mrow><mn>1</mn></mrow></msub><mo>×</mo><msub><mi>Θ</mi><mrow><mn>2</mn></mrow></msub><mo>,</mo><msub><mo>∘</mo><mrow><mi>ϱ</mi></mrow></msub><mo>)</mo></math></span> of a class of finite non-flexible weak inverse property quasigroups (WIPQs) but also the weak inverse transformations <span><math><msub><mi>Δ</mi><mrow><mn>1</mn></mrow></msub><mo>,</mo><msub><mi>Δ</mi><mrow><mn>2</mn></mrow></msub><mo>,</mo><msub><mi>Δ</mi><mrow><mn>3</mn></mrow></msub></math></span> associated with this class of non-associative algebra. Moreover, quasi-parastrophes-based encryption and decryption algorithms associated with quasi map <span><math><msub><mo>∘</mo><mrow><mn>1</mn></mrow></msub></math></span> and inverse the quasi map <span><math><msub><mo>∘</mo><mrow><mn>2</mn></mrow></msub></math></span> have been written to increase the security protocols during transformations of plaintexts.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 104060"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147422182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 comprehensive impacts of Tree-Shrub Ratio on the thermal environment, building energy consumption, and carbon-related effects in residential areas 林灌比对住区热环境、建筑能耗和碳相关效应的综合影响
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-23 DOI: 10.1016/j.asej.2026.104058
Min Xiao, Yuanqing Deng, Sheng Song, Jianhe Xu
{"title":"The comprehensive impacts of Tree-Shrub Ratio on the thermal environment, building energy consumption, and carbon-related effects in residential areas","authors":"Min Xiao,&nbsp;Yuanqing Deng,&nbsp;Sheng Song,&nbsp;Jianhe Xu","doi":"10.1016/j.asej.2026.104058","DOIUrl":"10.1016/j.asej.2026.104058","url":null,"abstract":"<div><div>The Tree-Shrub Ratio (TSR) Exerts a Profound Impact on Residential Microclimate, Building Energy Consumption, and Carbon Budget. This study developed a Microclimate-Building Energy Consumption-Carbon Cycle (MBECC) integrated model to systematically simulate the comprehensive effects of varying TSRS. Results indicate that different TSRS induce differentiated impacts on air temperature, relative humidity, and wind speed by modifying canopy structure and vertical distribution—with the cooling effect being the most pronounced. The all-arbor configuration outperforms other configurations in terms of overall energy conservation and carbon mitigation. When the TSR increases from 4:6 to 5:5, the enhancements in cooling, energy saving, and carbon-related effects are the most significant. In the long run, the all-shrub configuration exhibits rapid carbon sink growth in the first 20 years, whereas the all-arbor configuration surpasses it after 20 years, with its advantage continuing to expand. This study offers evidence-based guidance for the refined low-carbon design of residential green spaces.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 104058"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147422183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
On fuzzy valued fractional iterative schemes 关于模糊值分数阶迭代格式
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.asej.2025.103964
Yuanheng Wang , Naseem Zulfiqar Ali , Awais Gul Khan , Muhammad Zakria Javed , Muhammad Uzair Awan , Ali Akgül , Yahya Almalki
{"title":"On fuzzy valued fractional iterative schemes","authors":"Yuanheng Wang ,&nbsp;Naseem Zulfiqar Ali ,&nbsp;Awais Gul Khan ,&nbsp;Muhammad Zakria Javed ,&nbsp;Muhammad Uzair Awan ,&nbsp;Ali Akgül ,&nbsp;Yahya Almalki","doi":"10.1016/j.asej.2025.103964","DOIUrl":"10.1016/j.asej.2025.103964","url":null,"abstract":"<div><div>This work provides a two-step fractional iterative algorithm for fuzzy nonlinear equations (FNEs). The proposed algorithm combines the memory effect of the fractional derivatives and the uncertainty representation of the fuzzy numbers through the use of fractional calculus and fuzzy logic, respectively. Convergence analysis reveals that the method is of order <span><math><mn>4</mn><mi>ϑ</mi></math></span>. Numerical experiments involving a real-world profit-maximization problem affirm the accuracy and better convergence as compared to the classical and fractional Newton methods. Numerical examples and their graphical illustrations of the fuzzy solutions, absolute errors, and functional values also help to argue for the efficiency and reliability of the given technique.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 103964"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146057290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Implications of façade construction sequence for fire safety in high‑rise buildings 高层建筑立面施工顺序对消防安全的影响
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.asej.2026.103989
Jing Li , Xiaodan Li , Zhiping Liu , Xinyi Hu , Zongjun Xia , Yunci Guo , Qi Yang , Xiaojie Yang
{"title":"Implications of façade construction sequence for fire safety in high‑rise buildings","authors":"Jing Li ,&nbsp;Xiaodan Li ,&nbsp;Zhiping Liu ,&nbsp;Xinyi Hu ,&nbsp;Zongjun Xia ,&nbsp;Yunci Guo ,&nbsp;Qi Yang ,&nbsp;Xiaojie Yang","doi":"10.1016/j.asej.2026.103989","DOIUrl":"10.1016/j.asej.2026.103989","url":null,"abstract":"<div><div>Fires during the construction of high-rise buildings occur frequently. This study proposes to improve high-rise building construction fire safety by optimizing the construction sequence of the building façade. Smoke spread simulation of 63 façade construction sequences under ambient wind conditions. Based on seven evenly distributed fire points inside the building, the smoke-affected area was quantified. Results show that the optimal sequence is to complete the windward façade first, then the leeward façade, and finally the lateral façades. This sequence substantially reduces the affected area, mitigates stack-effect-driven smoke spread, and lowers smoke rise height. The optimization showed the strongest effect on visibility, followed by temperature, and the smallest carbon monoxide concentration. This effect varies with fire source location. Moreover, as the number of complete façades increases, the influence shows a decreasing trend. These findings provide a theoretical basis and offer practical guidance for planning façade construction in high-rise buildings.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 103989"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146057289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Parallel operation of induction generators in grid-connected micro-hydro systems 并网微水电系统中感应发电机并联运行
IF 5.9 2区 工程技术
Ain Shams Engineering Journal Pub Date : 2026-03-01 Epub Date: 2026-02-06 DOI: 10.1016/j.asej.2026.104021
Mrinal Kanti Rajak , Jotirmoy Samanta , Rajen Pudur , S.S. Murthy
{"title":"Parallel operation of induction generators in grid-connected micro-hydro systems","authors":"Mrinal Kanti Rajak ,&nbsp;Jotirmoy Samanta ,&nbsp;Rajen Pudur ,&nbsp;S.S. Murthy","doi":"10.1016/j.asej.2026.104021","DOIUrl":"10.1016/j.asej.2026.104021","url":null,"abstract":"<div><div>This paper presents a novel experimental approach for grid integration of parallel-connected induction generators (IGs) with different power ratings (2.2 kW and 5.5 kW) in micro-hydro power plants, eliminating the need for power electronics converters. A comprehensive steady-state mathematical model using per-phase equivalent circuits is developed, with system equations solved efficiently through the lower–upper (LU) decomposition method in MATLAB. Three experimental scenarios validate the approach: IGs at different slips, identical slips, and variable speed operation. Results demonstrate that identical slip operation (Case B) achieves optimal performance with 5,262 W active power generation, a 126% increase over the different slip operation, and 2,618 VAR reactive power consumption, representing a 15% reduction. The methodology effectively reduces inrush currents during grid connection, maintains voltage stability within ± 5% tolerance, and improves power factor from 0.76 to 0.95. This cost-effective solution advances renewable energy integration for remote applications without complex power electronics.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"17 3","pages":"Article 104021"},"PeriodicalIF":5.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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