发布求助
文献互助 智能选刊 最新文献

Renewable Energy and Power Quality Journal最新文献

筛选
英文 中文
Evaluation of XGBoost vs. other Machine Learning models for wind parameters identification XGBoost与其他机器学习模型在风参数识别中的比较
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.334
B. García-Puente, A. Rodríguez-Hurtado, M. Santos, J. Sierra-García
{"title":"Evaluation of XGBoost vs. other Machine Learning models for wind parameters identification","authors":"B. García-Puente, A. Rodríguez-Hurtado, M. Santos, J. Sierra-García","doi":"10.24084/repqj21.334","DOIUrl":"https://doi.org/10.24084/repqj21.334","url":null,"abstract":"Wind energy is one of the most promising renewable energies. But wind is a quite unstable resource due to its continuous variation and random nature. This uncertainty affects the production cost. Therefore, accurate forecasting of wind and energy is very interesting for energy markets. In this work, we test a recent and powerful intelligent technique, extreme gradient boosting (XGBoost), for wind prediction. The forecasting models of some wind features with XGBoost are compared with Support Vector Regression (SVR), Gaussian Process Regression (GPR) and Neural Networks (NN) models. Specifically, the three features predicted are the active power generated by the turbine, the wind speed, and the wind direction. The results conclude that these techniques are useful for wind and energy forecasting, with XGBoost being the most outstanding one, especially for short-term predictions.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"23 10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82922681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance Evaluation of Grid Connected T-Type Multilevel Inverters 并网t型多电平逆变器性能评价
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.404
Kévin Acadine, Augustin Mpanda Mabwe, A. El Hajjaji
{"title":"Performance Evaluation of Grid Connected T-Type Multilevel Inverters","authors":"Kévin Acadine, Augustin Mpanda Mabwe, A. El Hajjaji","doi":"10.24084/repqj21.404","DOIUrl":"https://doi.org/10.24084/repqj21.404","url":null,"abstract":"This paper deals with performance of three and five level grid-connected T-type inverters. T-Type structure requires fewer power devices than Neutral-Point-Clamped and FlyingCapacitor inverters for the same power level. First, mathematical model of grid connected T-Type inverters is demonstrated. The PI controller is used to control the d-axis and q-axis currents, respectively. The sine Pulse Width Modulation (PWM) technique is used to control the MOSFET switches. The simulation of the complete system has been performed on MATLAB/Simulink.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"126 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88174088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analytical Design Methodology for Wind Power Permanent Magnet Synchronous Generators 风力发电永磁同步发电机的分析设计方法
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.418
V. Ballestín-Bernad, J. S. Artal-Sevil, J. A. Domínguez-Navarro
{"title":"Analytical Design Methodology for Wind Power Permanent Magnet Synchronous Generators","authors":"V. Ballestín-Bernad, J. S. Artal-Sevil, J. A. Domínguez-Navarro","doi":"10.24084/repqj21.418","DOIUrl":"https://doi.org/10.24084/repqj21.418","url":null,"abstract":"In this paper a novel analytical design methodology for wind power permanent magnet synchronous generators is presented. This kind of electric generator plays a major role in small-scale wind energy conversion systems up to 10 kW. The proposed diameter-cubed sizing equation is based both on the generator requirements, imposed by the application, and the design parameters that rely on the designer criteria. The magnetic field waveforms of both the permanent magnets field and the armature field are considered from the first moment through the winding factors, as well as the slots effects given by the Carter factor. The analytical model of the permanent magnet synchronous generator is validated with the finite element method, showing good agreement, both with no load and under load. As the generator is unsaturated, the main source of divergence between the analytical and the finite element model are the iron losses, due to the nonuniform magnetic field distribution.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74239864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Modelling Wind Turbine Power Curves based on Frank’s copula 基于弗兰克公式的风力发电机功率曲线建模
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.378
M.A. Garcia-Vaca, J. Sierra-García, M. Santos, Ravi Kumar Pandit
{"title":"Modelling Wind Turbine Power Curves based on Frank’s copula","authors":"M.A. Garcia-Vaca, J. Sierra-García, M. Santos, Ravi Kumar Pandit","doi":"10.24084/repqj21.378","DOIUrl":"https://doi.org/10.24084/repqj21.378","url":null,"abstract":"In the study of wind turbines, one of the most relevant and useful indicators is the power curve. It has been shown to be of paramount importance in evaluating turbine performance and therefore reducing operation and maintenance (O&M) costs. Various techniques can be applied to model and obtain the shape of this curve, which relates the electrical power generated by a turbine to the wind speed. Statistical copulas are used in this paper, a tool used in other fields such as econometrics, and whose potential lies in its ability to capture the complex dependency between the variables involved. In particular, the Frank copula is applied to obtain a probabilistic model of the power curve of a wind turbine. This model is compared with the Gaussian Mixture Model, a technique widely used to obtain parametric probabilistic models. As a result of this comparison, it is observed that the Frank copula model fits the power curve of the wind turbine with greater precision and reliability, which would allow its use for prediction and fault detection.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"239 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74486268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Control a Photovoltaic/Wind Turbine/Diesel generator with storage battery 控制带有蓄电池的光伏/风力涡轮机/柴油发电机
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.342
Djamila Rekioua, K. Kakouche, T. Rekioua, Z. Mokrani
{"title":"Control a Photovoltaic/Wind Turbine/Diesel generator with storage battery","authors":"Djamila Rekioua, K. Kakouche, T. Rekioua, Z. Mokrani","doi":"10.24084/repqj21.342","DOIUrl":"https://doi.org/10.24084/repqj21.342","url":null,"abstract":"Wind/Photovoltaic energy systems are among the most used configurations in multi-sources energy systems because their reliability, robustness and power sources complementarily. For heavy loads, it is more convenient to add backup systems (diesel generator) for an enhanced power availability. In order to protect power sources and increase their lifespan, several power management strategies are such as fuzzy logic control, artificial neural networks and metaheuristic algorithms are proposed and used in literature. This paper presents a power supervisory control (PMC) based on fuzzy logic control dedicated for photovoltaic/wind turbine/ diesel generator/battery systems. The application of the aforementioned technique makes it possible to predict how the hybrid system various operating processes would change in response to solar irradiation and wind speed variations. The study was implemented under Matlab/Simulink. To obtain more realistic results, measured weather values have been incorporated in the simulation. The application is made in a coastal town which has a good potential values of solar irradiance and wind speeds. The obtained results show that the load have been supplied while the batteries were protected due to the PMC.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75729241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sizing of on-grid photovoltaic systems for water pumping in irrigation communities 灌溉社区抽水并网光伏系统的规模
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.228
Á. Bayod-Rújula, R. Dufo-López, Amaya Martínez Gracia
{"title":"Sizing of on-grid photovoltaic systems for water pumping in irrigation communities","authors":"Á. Bayod-Rújula, R. Dufo-López, Amaya Martínez Gracia","doi":"10.24084/repqj21.228","DOIUrl":"https://doi.org/10.24084/repqj21.228","url":null,"abstract":"This paper describes a technical-economical analysis to achieve the most appropriate sizing of grid-connected photovoltaic systems for water pumping in irrigation communities. The profitability of different tracking systems are analysed based on the price of the electrical energy consumed from the network. The case study of a real pumping system of an irrigation community located in Zaragoza (Spain) is presented, which supplies a geographical area of 2000 Ha, with six 630kW pumps and eight 110kW units.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81493778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance of Resonant Chambers in Oscillating Water Column Devices 振荡水柱装置中谐振腔的性能
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.446
Juan D. Parra-Quintero, A. Rubio-Clemente, E. Chica
{"title":"Performance of Resonant Chambers in Oscillating Water Column Devices","authors":"Juan D. Parra-Quintero, A. Rubio-Clemente, E. Chica","doi":"10.24084/repqj21.446","DOIUrl":"https://doi.org/10.24084/repqj21.446","url":null,"abstract":"The utilization of marine power potential in Colombia holds a great promise, and the oscillating water column (OWC) is one option that deserves to be explored. The wave energy conversion process using an OWC typically involves two stages: the conversion of wave power to pneumatic power in an air chamber, and the conversion of pneumatic power to electricity using a selfrectifying air turbine coupled to an electric generator. In order to improve the efficiency of the primary stage, this study is aiming at determining the hydrodynamic performance of an OWC air chamber using a numerical model based on the Reynolds Averaged Navier-Stokes equations and the Volume of Fluid approach for free surface simulation. The chamber geometry was based on a U-shaped OWC. The maximum efficiency and the mean velocity of the chamber free surface were found to be 66.8% and 0.17 m/s, respectively. The numerical results for the wave height obtained through simulation were validated by comparing them to analytical expressions reported in the existing literature, and a significant level of agreement was observed. Optimizing the chamber shape parameters for the specific wave characteristics is concluded to be crucial to enhance the operating efficiency of the OWC.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82940384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the Potential of Ethyl Esterification Reaction Catalyzed by Enzyme to Improve the Quality of Bio-Oil 酶催化乙基酯化反应提高生物油品质的潜力评价
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.254
Candida Luiza Simonato, A. Gonçalves, Bruno Eduardo Piske, Luana Marcele Chiarello, V. Botton, Laércio Endre, Vinicyus Rodolfo Wiggers
{"title":"Evaluation of the Potential of Ethyl Esterification Reaction Catalyzed by Enzyme to Improve the Quality of Bio-Oil","authors":"Candida Luiza Simonato, A. Gonçalves, Bruno Eduardo Piske, Luana Marcele Chiarello, V. Botton, Laércio Endre, Vinicyus Rodolfo Wiggers","doi":"10.24084/repqj21.254","DOIUrl":"https://doi.org/10.24084/repqj21.254","url":null,"abstract":"Biomass has been investigated in recent years as an alternative source for fuel production. The use of triglyceride biomass is highlighted and, from the thermal cracking process, solid, liquid and gaseous products with energetic potential are generated. The liquid product, called bio-oil, has characteristics similar those of fossil fuels. Its composition is mainly based on hydrocarbons and carboxylic acids, and the second group generates a limiting characteristic in its processing, refining and use as fuel, increasing the acidity of bio-oil. In this work, bio-oil produced from commercial soybean oil was used in a thermal cracking process at 525ºC. The objective was to carry out ethyl esterification reactions via enzymatic catalysis in order to reduce the acidity index of the crude bio-oil. All reactions were carried out at 40ºC to avoid enzyme deactivation and different conditions of type and amount of catalyst, alcohol mass ratio and reaction time were evaluated. The best result was obtained after 6 hours of reaction with 60% acidity reduction, using Novozym 435 lipase as a catalyst at a concentration of 5% in relation to the substrate mass and 1:3 mass ratio.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83089431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Graphical method for PQ assessment: EDA tools using traditional indices and Higher-order Statistics PQ评估的图形化方法:使用传统指数和高阶统计量的EDA工具
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.390
P. Remigio-Carmona, O. Florencias-Oliveros, J. González-de-la-Rosa
{"title":"A Graphical method for PQ assessment: EDA tools using traditional indices and Higher-order Statistics","authors":"P. Remigio-Carmona, O. Florencias-Oliveros, J. González-de-la-Rosa","doi":"10.24084/repqj21.390","DOIUrl":"https://doi.org/10.24084/repqj21.390","url":null,"abstract":"This paper presents a new qualitative method for assessing the power quality (PQ) of electrical systems using both time domain traditional indices and higher-order statistics. The method employs engineering data analysis (EDA) tools to analyse and interpret the PQ data coming from real datasets. Boxplot of each index are considered an essential tool that deserves to be included and studied when an external dataset it is analysed. But this research intends to go a step further, and for this reason a new tool for the spatial visualization of supply quality based on a radar chart is proposed. Each of its vertices constitutes an index, integrating from 3rd to 6 th order statistics with the traditional indicators SNR, SINAD and crest factor. The proposed methodology is applied to the analysis of real available signals and both, boxplot and radarchart, results are compared and commented. Finally, relationships are established between the altered indicators and the type(s) of event found in the signal.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85053187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary Identification of the Dynamics of a Floating Offshore Wind Turbine Barge 海上浮式风力发电驳船的动力学初步辨识
Renewable Energy and Power Quality Journal Pub Date : 2023-07-01 DOI: 10.24084/repqj21.387
I. Galeote, S. Esteban, M. Santos
{"title":"Preliminary Identification of the Dynamics of a Floating Offshore Wind Turbine Barge","authors":"I. Galeote, S. Esteban, M. Santos","doi":"10.24084/repqj21.387","DOIUrl":"https://doi.org/10.24084/repqj21.387","url":null,"abstract":"Offshore wind turbines have become an increasingly attractive source of renewable energy because of their potential to access and utilize energy from deeper waters with more stable, stronger winds. The goal of this paper is to propose a mathematical model based on transfer functions to identify and study the behavior of the six degrees of freedom of floating turbines. For this purpose, the system has been simulated with OpenFAST for specific environmental conditions. A subset of data has been used to identify transfer functions to obtain a control-oriented model. The model has been progressively validated, extending the preliminary proposed model. The scope and limitations of this methodology have been assessed, as well as the possibilities of extending the present work to include a more functional methodology oriented to system co-design.","PeriodicalId":21076,"journal":{"name":"Renewable Energy and Power Quality Journal","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86744020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信