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Energy Disaggregation of Industrial Machinery Utilizing Artificial Neural Networks for Non-intrusive Load Monitoring 利用人工神经网络对工业机械进行能量分解,实现非侵入式负载监测
IF 9.6
Energy and AI Pub Date : 2024-08-04 DOI: 10.1016/j.egyai.2024.100407
Philipp Pelger , Johannes Steinleitner , Alexander Sauer
{"title":"Energy Disaggregation of Industrial Machinery Utilizing Artificial Neural Networks for Non-intrusive Load Monitoring","authors":"Philipp Pelger ,&nbsp;Johannes Steinleitner ,&nbsp;Alexander Sauer","doi":"10.1016/j.egyai.2024.100407","DOIUrl":"10.1016/j.egyai.2024.100407","url":null,"abstract":"<div><p>This paper explores the application of non-intrusive load monitoring techniques in the industrial sector for disaggregating the energy consumption of machinery in manufacturing processes. With an increasing focus on energy efficiency and decarbonization measures, achieving energy transparency in production becomes crucial. Utilizing non-intrusive load monitoring, energy data analysis and processing can provide valuable insights for informed decision-making on energy efficiency improvements and emission reductions. While non-intrusive load monitoring has been extensively researched in the building and residential sectors, the application in the industrial manufacturing domain needs to be further explored. This paper addresses this research gap by adapting established non-intrusive load monitoring techniques to an industrial dataset. By employing artificial neural networks for energy disaggregation, the determination of energy consumption of industrial machinery is made possible. Therefore, a generally applicable cross-energy carrier method to disaggregate the energy consumption of machinery in manufacturing processes is developed using a design science research approach and validated through a practical case study utilizing a compressed air demonstrator. The results show that the utilization of artificial neural networks is well-suited for energy disaggregation of industrial data, effectively identifying on and off states, multi-level states and continuously variable states. Non-intrusive load monitoring should be further considered in the research of emerging artificial intelligence technologies in energy consumption evaluation. It can be a viable alternative for intrusive load monitoring and is a prerequisite to installing energy meters for every machine.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100407"},"PeriodicalIF":9.6,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000739/pdfft?md5=1ae6290c0db1d3d6779ce8eb7568918e&pid=1-s2.0-S2666546824000739-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced vision-transformer integrating with semi-supervised transfer learning for state of health and remaining useful life estimation of lithium-ion batteries 集成了半监督转移学习的增强型视觉转换器,用于锂离子电池的健康状况和剩余使用寿命评估
IF 9.6
Energy and AI Pub Date : 2024-08-03 DOI: 10.1016/j.egyai.2024.100405
Ya-Xiong Wang , Shangyu Zhao , Shiquan Wang , Kai Ou , Jiujun Zhang
{"title":"Enhanced vision-transformer integrating with semi-supervised transfer learning for state of health and remaining useful life estimation of lithium-ion batteries","authors":"Ya-Xiong Wang ,&nbsp;Shangyu Zhao ,&nbsp;Shiquan Wang ,&nbsp;Kai Ou ,&nbsp;Jiujun Zhang","doi":"10.1016/j.egyai.2024.100405","DOIUrl":"10.1016/j.egyai.2024.100405","url":null,"abstract":"<div><p>The state of health (SOH) and remaining useful life (RUL) of lithium-ion batteries are crucial for health management and diagnosis. However, most data-driven estimation methods heavily rely on scarce labeled data, while traditional transfer learning faces challenges in handling domain shifts across various battery types. This paper proposes an enhanced vision-transformer integrating with semi-supervised transfer learning for SOH and RUL estimation of lithium-ion batteries. A depth-wise separable convolutional vision-transformer is developed to extract local aging details with depth-wise convolutions and establishes global dependencies between aging information using multi-head attention. Maximum mean discrepancy is employed to initially reduce the distribution difference between the source and target domains, providing a superior starting point for fine-tuning the target domain model. Subsequently, the abundant aging data of the same type as the target battery are labeled through semi-supervised learning, compensating for the source model's limitations in capturing target battery aging characteristics. Consistency regularization incorporates the cross-entropy between predictions with and without adversarial perturbations into the gradient backpropagation of the overall model. In particular, across the experimental groups 13–15 for different types of batteries, the root mean square error of SOH estimation was less than 0.66 %, and the mean relative error of RUL estimation was 3.86 %. Leveraging extensive unlabeled aging data, the proposed method could achieve accurate estimation of SOH and RUL.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100405"},"PeriodicalIF":9.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000715/pdfft?md5=69ea1922b5cb753426903122e7193acd&pid=1-s2.0-S2666546824000715-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141998259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An artificial intelligence framework for explainable drift detection in energy forecasting 能源预测中可解释漂移检测的人工智能框架
IF 9.6
Energy and AI Pub Date : 2024-08-03 DOI: 10.1016/j.egyai.2024.100403
Chamod Samarajeewa , Daswin De Silva , Milos Manic , Nishan Mills , Harsha Moraliyage , Damminda Alahakoon , Andrew Jennings
{"title":"An artificial intelligence framework for explainable drift detection in energy forecasting","authors":"Chamod Samarajeewa ,&nbsp;Daswin De Silva ,&nbsp;Milos Manic ,&nbsp;Nishan Mills ,&nbsp;Harsha Moraliyage ,&nbsp;Damminda Alahakoon ,&nbsp;Andrew Jennings","doi":"10.1016/j.egyai.2024.100403","DOIUrl":"10.1016/j.egyai.2024.100403","url":null,"abstract":"<div><p>Accurate energy consumption forecasting is crucial for reducing operational costs, achieving net-zero carbon emissions, and ensuring sustainable buildings and cities of the future. Despite the frequent use of Artificial Intelligence (AI) algorithms for learning energy consumption patterns and predictions in Building Science, relying solely on these techniques for energy demand prediction addresses only a fraction of the challenge. A drift in energy usage can lead to inaccuracies in these AI models and subsequently to poor decision-making and interventions. While drift detection techniques have been reported, a reliable and robust approach capable of explaining identified discrepancies with actionable insights has not been discussed in extant literature. Hence, this paper presents an Artificial Intelligence framework for energy consumption forecasting with explainable drift detection, aimed at addressing these challenges. The proposed framework is composed of energy embeddings, an optimized dimensional model integrated within a data warehouse, and scalable cloud implementation for effective drift detection with explainability capability. The framework is empirically evaluated in the real-world setting of a multi-campus, mixed-use tertiary education setting in Victoria, Australia. The results of these experiments highlight its capabilities in detecting concept drift, adapting forecast predictions, and providing an interpretation of the changes using energy embeddings.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100403"},"PeriodicalIF":9.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000697/pdfft?md5=43ed6a129e42eadda8715a969f5410c8&pid=1-s2.0-S2666546824000697-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uplifting the complexity of analysis for probabilistic security of electricity supply assessments using artificial neural networks 利用人工神经网络提高电力供应安全概率评估分析的复杂性
IF 9.6
Energy and AI Pub Date : 2024-08-02 DOI: 10.1016/j.egyai.2024.100401
Justin Münch , Jan Priesmann , Marius Reich , Marius Tillmanns , Aaron Praktiknjo , Mario Adam
{"title":"Uplifting the complexity of analysis for probabilistic security of electricity supply assessments using artificial neural networks","authors":"Justin Münch ,&nbsp;Jan Priesmann ,&nbsp;Marius Reich ,&nbsp;Marius Tillmanns ,&nbsp;Aaron Praktiknjo ,&nbsp;Mario Adam","doi":"10.1016/j.egyai.2024.100401","DOIUrl":"10.1016/j.egyai.2024.100401","url":null,"abstract":"<div><p>The energy sector faces rapid decarbonisation and decision-makers demand reliable assessments of the security of electricity supply. For this, detailed simulation models with a high temporal and technological resolution are required. When confronted with increasing weather-dependent renewable energy generation, probabilistic simulation models have proven. The significant computational costs of calculating a scenario, however, limit the complexity of further analysis. Advances in code optimization as well as the use of computing clusters still lead to runtimes of up to eight hours per scenario. However ongoing research highlights that tailor-made approximations are potentially the key factor in further reducing computing time. Consequently, current research aims to provide a method for the rapid prediction of widely varying scenarios. In this work artificial neural networks (ANN) are trained and compared to approximate the system behavior of the probabilistic simulation model. To do so, information needs to be sampled from the probabilistic simulation in an efficient way. Because only a limited space in the whole design space of the 16 independent variables is of interest, a classification is developed. Finally it required only around 35 min to create the regression models, including sampling the design space, simulating the training data and training the ANNs. The resulting ANNs are able to predict all scenarios within the validity range of the regression model with a coefficient of determination of over 0.9998 for independent test data (1.051.200 data points). They need only a few milliseconds to predict one scenario, enabling in-depth analysis in a brief period of time.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100401"},"PeriodicalIF":9.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000673/pdfft?md5=037a3df4e229de699ce8e60d069d4893&pid=1-s2.0-S2666546824000673-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leveraging machine learning to generate a unified and complete building height dataset for Germany 利用机器学习生成统一完整的德国建筑高度数据集
IF 9.6
Energy and AI Pub Date : 2024-07-31 DOI: 10.1016/j.egyai.2024.100408
Kristina Dabrock , Noah Pflugradt , Jann Michael Weinand , Detlef Stolten
{"title":"Leveraging machine learning to generate a unified and complete building height dataset for Germany","authors":"Kristina Dabrock ,&nbsp;Noah Pflugradt ,&nbsp;Jann Michael Weinand ,&nbsp;Detlef Stolten","doi":"10.1016/j.egyai.2024.100408","DOIUrl":"10.1016/j.egyai.2024.100408","url":null,"abstract":"<div><p>Building geometry data is crucial for detailed, spatially-explicit analyses of the building stock in energy systems analysis and beyond. Despite the existence of diverse datasets and methods, a standardized and validated approach for creating a nation-wide unified and complete dataset of German building heights is not yet available. This study develops and validates such a methodology, combining different data sources for building footprints and heights and filling gaps in height data using an XGBoost machine learning algorithm. The XGBoost model achieves a mean absolute error of 1.78 m at the national level and between 1.52 m and 3.47 m at the federal state level. The goal is proving the applicability of the methodology at a large scale and creating a useful dataset. The resulting dataset is thoroughly evaluated on a building-by-building level and spatially resolved statistics on the quality of the dataset are reported. This detailed validation found that the building number and footprint area of German building stock is 90.31 % and 94.84 % correct, respectively, and the building height accuracy is 0.59 m at the national level. However, errors are not homogeneous across Germany and further research is needed into the impact of including additional datasets, especially for regions and building types with lower accuracies. This study proves that the chosen methodology is useful for generating a building height dataset and the workflow, with some modifications for regional data availability, can be transferred to other countries. The generated building dataset for Germany constitutes a valuable data basis for the research community in fields such as energy research, urban planning and building decarbonization policy development.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100408"},"PeriodicalIF":9.6,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000740/pdfft?md5=0c0b5b01fe19056c6830a6c702ac7eb8&pid=1-s2.0-S2666546824000740-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142006453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A review of control strategies for proton exchange membrane (PEM) fuel cells and water electrolysers: From automation to autonomy 质子交换膜(PEM)燃料电池和水电解槽控制策略综述:从自动化到自主化
IF 9.6
Energy and AI Pub Date : 2024-07-28 DOI: 10.1016/j.egyai.2024.100406
Jiahao Mao , Zheng Li , Jin Xuan , Xinli Du , Meng Ni , Lei Xing
{"title":"A review of control strategies for proton exchange membrane (PEM) fuel cells and water electrolysers: From automation to autonomy","authors":"Jiahao Mao ,&nbsp;Zheng Li ,&nbsp;Jin Xuan ,&nbsp;Xinli Du ,&nbsp;Meng Ni ,&nbsp;Lei Xing","doi":"10.1016/j.egyai.2024.100406","DOIUrl":"10.1016/j.egyai.2024.100406","url":null,"abstract":"<div><p>Proton exchange membrane (PEM) based electrochemical systems have the capability to operate in fuel cell (PEMFC) and water electrolyser (PEMWE) modes, enabling efficient hydrogen energy utilisation and green hydrogen production. In addition to the essential cell stacks, the system of PEMFC or PEMWE consists of four sub-systems for managing gas supply, power, thermal, and water, respectively. Due to the system's complexity, even a small fluctuation in a certain sub-system can result in an unexpected response, leading to a reduced performance and stability. To improve the system's robustness and responsiveness, considerable efforts have been dedicated to developing advanced control strategies. This paper comprehensively reviews various control strategies proposed in literature, revealing that traditional control methods are widely employed in PEMFC and PEMWE due to their simplicity, yet they suffer from limitations in accuracy. Conversely, advanced control methods offer high accuracy but are hindered by poor dynamic performance. This paper highlights the recent advancements in control strategies incorporating machine learning algorithms. Additionally, the paper provides a perspective on the future development of control strategies, suggesting that hybrid control methods should be used for future research to leverage the strength of both sides. Notably, it emphasises the role of artificial intelligence (AI) in advancing control strategies, demonstrating its significant potential in facilitating the transition from automation to autonomy.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100406"},"PeriodicalIF":9.6,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000727/pdfft?md5=e5dd0e37800dc069bc5b04e7343ae983&pid=1-s2.0-S2666546824000727-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineered wettability-gradient porous structure enabling efficient water manipulation in regenerative fuel cells 可在再生燃料电池中实现高效水处理的工程润湿梯度多孔结构
IF 9.6
Energy and AI Pub Date : 2024-07-28 DOI: 10.1016/j.egyai.2024.100400
Zhefei Pan , Lizhen Wu , Fengjia Xie , Zhewei Zhang , Zhen Zhao , Oladapo Christopher Esan , Xuming Zhang , Rong Chen , Liang An
{"title":"Engineered wettability-gradient porous structure enabling efficient water manipulation in regenerative fuel cells","authors":"Zhefei Pan ,&nbsp;Lizhen Wu ,&nbsp;Fengjia Xie ,&nbsp;Zhewei Zhang ,&nbsp;Zhen Zhao ,&nbsp;Oladapo Christopher Esan ,&nbsp;Xuming Zhang ,&nbsp;Rong Chen ,&nbsp;Liang An","doi":"10.1016/j.egyai.2024.100400","DOIUrl":"10.1016/j.egyai.2024.100400","url":null,"abstract":"<div><p>Regenerative fuel cells can operate alternately as an electrolyzer and as a fuel cell, frequently involving water as a reactant or product. Modifying the electrode surface to manipulate water can prevent electrode flooding and enhance the electrode's mass transfer efficiency by facilitating better contact with gaseous reactants. However, conventional electrodes face difficulties in allowing water droplets to penetrate in a single direction leaving electrodes. In this work to address this issue, a wettability gradient electrode is designed and fabricated for efficient water manipulation in regenerative fuel cells. The findings demonstrate that the water removal strategy in the electrolyzer mode yields the highest ammonia yield and Faradaic efficiency of 3.39 × 10<sup>-10</sup> mol s<sup>-1</sup> cm<sup>-2</sup> and 0.49 %, respectively. Furthermore, in the fuel cell mode, the discharging process sustains for approximately 20.5 h, which is six times longer than the conventional strategy. The ability to sustain the discharging process for extended periods is particularly advantageous in regenerative fuel cells, as it enables the cells to operate for longer periods without the need for regeneration.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100400"},"PeriodicalIF":9.6,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000661/pdfft?md5=661befff926697445162c669b3147c27&pid=1-s2.0-S2666546824000661-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance decay prediction model of proton exchange membrane fuel cell based on particle swarm optimization and gate recurrent unit 基于粒子群优化和栅极递归单元的质子交换膜燃料电池性能衰减预测模型
IF 9.6
Energy and AI Pub Date : 2024-07-26 DOI: 10.1016/j.egyai.2024.100399
Ziliang Zhao , Yifan Fu , Ji Pu , Zhangu Wang , Senhao Shen , Duo Ma , Qianya Xie , Fojin Zhou
{"title":"Performance decay prediction model of proton exchange membrane fuel cell based on particle swarm optimization and gate recurrent unit","authors":"Ziliang Zhao ,&nbsp;Yifan Fu ,&nbsp;Ji Pu ,&nbsp;Zhangu Wang ,&nbsp;Senhao Shen ,&nbsp;Duo Ma ,&nbsp;Qianya Xie ,&nbsp;Fojin Zhou","doi":"10.1016/j.egyai.2024.100399","DOIUrl":"10.1016/j.egyai.2024.100399","url":null,"abstract":"<div><p>The durability of proton exchange membrane fuel cells (PEMFC) is an important issue that restricts their large-scale application. To improve their reliability during use, this paper proposes a short-term performance degradation prediction model using particle swarm optimization (PSO) to optimize the gate recurrent unit (GRU). After training using only the data from the first 300 h, good prediction accuracy can be achieved. Compared with the traditional GRU algorithm, the proposed prediction method reduces the root mean square error (RMSE) and mean absolute error (MAE) of the prediction results by 44.8 % and 35.1 %, respectively. It avoids the problem of low accuracy in predicting performance during the temporary recovery phase in traditional GRU models, which is of great significance for the health management of PEMFC.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100399"},"PeriodicalIF":9.6,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266654682400065X/pdfft?md5=52ea45d35e987757f5f242b84f21efe3&pid=1-s2.0-S266654682400065X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep learning-based prediction of 3-dimensional silver contact shapes enabling improved quality control in solar cell metallization 基于深度学习的三维银触点形状预测有助于改进太阳能电池金属化的质量控制
IF 9.6
Energy and AI Pub Date : 2024-07-25 DOI: 10.1016/j.egyai.2024.100404
Marius Singler, Akshay Patil, Linda Ney, Andreas Lorenz, Sebastian Tepner , Florian Clement
{"title":"Deep learning-based prediction of 3-dimensional silver contact shapes enabling improved quality control in solar cell metallization","authors":"Marius Singler,&nbsp;Akshay Patil,&nbsp;Linda Ney,&nbsp;Andreas Lorenz,&nbsp;Sebastian Tepner ,&nbsp;Florian Clement","doi":"10.1016/j.egyai.2024.100404","DOIUrl":"10.1016/j.egyai.2024.100404","url":null,"abstract":"<div><p>The industrial metallization of Si solar cells predominantly relies on screen printing, with silver as the preferred electrode material. However, the design of commercial screens often leads to suboptimal silver usage and increased electrical resistance due to print-related inhomogeneities like mesh marks, constrictions and spreading. Real-time monitoring of quality parameters during production has thus become increasingly critical. Current inline optical quality control systems usually only include 2D visualizations of the printed layout, which limits their effectiveness in quality control. Options that allow 3D measurements are usually slow, expensive, and therefore not worth considering in most cases. This research focuses on the development of a model that can estimate the three-dimensional shape of printed contact fingers from a single 2D image without the need of additional hardware using deep learning. Furthermore, a workflow for the generation of training data, which involves the creation of image pairs from a 2D microscope and a 3D confocal laser scanning microscope (CLSM) to accurately represent solar cell fingers, is presented. After model training, the predicted height maps are compared with the ground truth height maps, and the robustness of the model with respect to a paste variation and screen parameter variation is examined. The results confirm the feasibility and reliability of deep learning-based 3D shape estimation, extending its applicability to new, previously unseen data from screen-printed contact fingers. With a structural similarity index (SSIM) score of 0.76, a strong correlation between the estimated and ground truth height maps is established. In summary, our deep learning-based approach for height map estimation offers an effective and reliable solution for fast inline detection and analysis of the cross-sectional area of the printed contact fingers.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100404"},"PeriodicalIF":9.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000703/pdfft?md5=1c02b13e9b6369da2cce3dd15ffbd8d9&pid=1-s2.0-S2666546824000703-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141839076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep learning from three-dimensional Lithium-ion battery multiphysics model Part II: Convolutional neural network and long short-term memory integration 三维锂离子电池多物理场模型的深度学习 第二部分:卷积神经网络与长短期记忆整合
IF 9.6
Energy and AI Pub Date : 2024-07-18 DOI: 10.1016/j.egyai.2024.100398
Yiheng Pang , Anqi Dong , Yun Wang , Zhiqiang Niu
{"title":"Deep learning from three-dimensional Lithium-ion battery multiphysics model Part II: Convolutional neural network and long short-term memory integration","authors":"Yiheng Pang ,&nbsp;Anqi Dong ,&nbsp;Yun Wang ,&nbsp;Zhiqiang Niu","doi":"10.1016/j.egyai.2024.100398","DOIUrl":"10.1016/j.egyai.2024.100398","url":null,"abstract":"<div><p>Lithium-ion (Li-ion) batteries have emerged as a cornerstone of electric vehicles (EVs), enabling the road transportation towards net zero. The success of electric vehicles largely hinges on the battery performance and safety. It is challenging to test and predict battery performance and safety issues by conventional methods, which are usually time-consuming and expensive, involving significant human and measurement errors. To enable the quick estimation of battery performance and safety, we developed three data-driven machine learning (ML) models, namely a convolutional neural network (CNN), a long short-term memory (LSTM), and a CNN-LSTM to predict battery discharge curves and local maximum temperature (hot spot) under various operating conditions. The developed ML models mitigated data scarcity by employing a three-dimensional multi-physics Li-ion battery model to generate enormous and diverse high-quality data. It was found the CNN-LSTM model outperforms the others and achieved high accuracy of 98.68% to learn discharge curves and battery maximum temperature, owing to the integration of spatial and sequential feature extraction. The battery safety can be improved by comparing the predicted maximum battery temperature against safe temperature threshold. The proposed data development and data-driven ML models are of great potential to provide digital tools for engineering high-performance and safe EVs.</p></div>","PeriodicalId":34138,"journal":{"name":"Energy and AI","volume":"17 ","pages":"Article 100398"},"PeriodicalIF":9.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666546824000648/pdfft?md5=efd7f0d7f4882ef78107d037bc4c20f9&pid=1-s2.0-S2666546824000648-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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