J. Serrano, J. A. Domínguez-Navarro, J. S. A. Sevil, R. D. López
{"title":"A case study of floating offshore wind park in the Mediterranean","authors":"J. Serrano, J. A. Domínguez-Navarro, J. S. A. Sevil, R. D. López","doi":"10.24084/REPQJ16.460","DOIUrl":"https://doi.org/10.24084/REPQJ16.460","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90472220","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}
The work deals with the application of artificial neural networks (ANNs) in the modeling of switched reluctance machines (SRMs). The performance of a SRM is determined by its geometry, materials used and levels of excitation. In this way, this work investigates the influence of the stator and rotor back iron thickness in the performance of SRM. A multilayer neural network is proposed to learn the nonlinear characteristics of the motor. Data of flux linkages and torque are obtained through simulations of finite elements and used for ANN training. The algorithm developed in Octave allows the user to adjust the network parameters. The results presented confirm the feasibility of using ANN to establish a predictive model of SRM performance, thus enabling further investigation in the future.
{"title":"Switched Reluctance Machine Modeling through Multilayer Neural Networks","authors":"A. C. F. Mamede, R. Camacho, R. Araújo","doi":"10.24084/repqj16.430","DOIUrl":"https://doi.org/10.24084/repqj16.430","url":null,"abstract":"The work deals with the application of artificial neural networks (ANNs) in the modeling of switched reluctance machines (SRMs). The performance of a SRM is determined by its geometry, materials used and levels of excitation. In this way, this work investigates the influence of the stator and rotor back iron thickness in the performance of SRM. A multilayer neural network is proposed to learn the nonlinear characteristics of the motor. Data of flux linkages and torque are obtained through simulations of finite elements and used for ANN training. The algorithm developed in Octave allows the user to adjust the network parameters. The results presented confirm the feasibility of using ANN to establish a predictive model of SRM performance, thus enabling further investigation in the future.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76744931","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}
G. J. Schäffer, F. Arduini, F. Moura, M. Mendonça, A. Rosentino, P. Rezende, M. Albertini
With the undoubted growth of power electronic devices, ie, non-linear loads, there was a need for a deeper study in the power calculation, taking into account the harmonic distortions caused by these loads. Therefore, the present work aims to present, based on a test electrical system, a comparative analysis between two power theories with great discussion at present, the first one being the IEEE 1459 standard and the second the Conservative Power Theory.
{"title":"Comparative Analysis between IEEE 1459 and Conservative Power Theory Through the Development of Power Meters","authors":"G. J. Schäffer, F. Arduini, F. Moura, M. Mendonça, A. Rosentino, P. Rezende, M. Albertini","doi":"10.24084/REPQJ16.262","DOIUrl":"https://doi.org/10.24084/REPQJ16.262","url":null,"abstract":"With the undoubted growth of power electronic devices, ie, non-linear loads, there was a need for a deeper study in the power calculation, taking into account the harmonic distortions caused by these loads. Therefore, the present work aims to present, based on a test electrical system, a comparative analysis between two power theories with great discussion at present, the first one being the IEEE 1459 standard and the second the Conservative Power Theory.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75151321","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}
{"title":"Multi-Energy Management System for Chungming Island in China","authors":"L. Shen, S. Zhang, C. Feng, A. Pourmovahed","doi":"10.24084/REPQJ16.210","DOIUrl":"https://doi.org/10.24084/REPQJ16.210","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77210597","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}
J. S. Artal-Sevil, R. Dufo, M. Astaneh, J. Dominguez, J. Bernal-Agustín
This paper studies the feasibility of using small electrical machines (e.g. automotive alternator, induction motors of domestic applications or electrical motors of some industrial application) as low cost generators for small wind turbine or small hydro power; its transformation in generators is not difficult. The objective is to provide a comparison among permanent magnet synchronous generator PMSG with different topologies (rotor configurations). The analysis was performed using FEMM-2D simulation software, which is based on finite element method. Small wind and hydro power systems are very attractive to support the energy demand for rural areas or developing countries where the electrical microgrid infrastructure is limited. Claw-pole automotive alternators can provide low cost alternative to permanent magnet synchronous generators for small wind and hydro turbines applications. The objective is the integration of hybrid energy conversion systems in microgrids and the development of small stand-alone systems in rural environment.
{"title":"Development of a small wind turbine for stand-alone system in rural environment. Reuse and recycling of electric motors","authors":"J. S. Artal-Sevil, R. Dufo, M. Astaneh, J. Dominguez, J. Bernal-Agustín","doi":"10.24084/repqj16.455","DOIUrl":"https://doi.org/10.24084/repqj16.455","url":null,"abstract":"This paper studies the feasibility of using small electrical machines (e.g. automotive alternator, induction motors of domestic applications or electrical motors of some industrial application) as low cost generators for small wind turbine or small hydro power; its transformation in generators is not difficult. The objective is to provide a comparison among permanent magnet synchronous generator PMSG with different topologies (rotor configurations). The analysis was performed using FEMM-2D simulation software, which is based on finite element method. Small wind and hydro power systems are very attractive to support the energy demand for rural areas or developing countries where the electrical microgrid infrastructure is limited. Claw-pole automotive alternators can provide low cost alternative to permanent magnet synchronous generators for small wind and hydro turbines applications. The objective is the integration of hybrid energy conversion systems in microgrids and the development of small stand-alone systems in rural environment.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80576594","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}
R. D. López, S. Ortega, J. S. A. Sevil, M. Astaneh, J. M. L. Rojas, J. A. D. Navarro, J. Agustín
{"title":"Analysis of power supply possibilities through lithium batteries connected to the AC grid","authors":"R. D. López, S. Ortega, J. S. A. Sevil, M. Astaneh, J. M. L. Rojas, J. A. D. Navarro, J. Agustín","doi":"10.24084/repqj16.456","DOIUrl":"https://doi.org/10.24084/repqj16.456","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75634720","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}
{"title":"Analysing Effect of Solar Photovoltaic Production on Load Curves and their Forecasting","authors":"B. Sinkovics, B. Hartmann","doi":"10.24084/repqj16.462","DOIUrl":"https://doi.org/10.24084/repqj16.462","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74582356","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}
J. A. Auñon, M. Sidrach‐de‐Cardona, A. Marfil, J. Varga
This paper analyses the viability of a new microcogeneration system with a Stirling engine-based micro-CHP (combined heat and power) and renewable solar energy: thermal and photovoltaic system in order to supply the energy demand of an isolated home. The right sizing of solar energy systems should allow optimizing both the available solar resources and gas consumption for one specific climatological conditions. The present work shows the first results of the experimental study of a micro-cogeneration system (micro-CHP based on the Stirling motor) supported with renewable energy. The system of self-government covers the theoretical daily consumption of a house. In this results, the different contributions of the subsystems to the daily thermal and electric demand are displayed.
{"title":"New microcogeneration with solar energy: stirling, thermal and photovoltaic systems","authors":"J. A. Auñon, M. Sidrach‐de‐Cardona, A. Marfil, J. Varga","doi":"10.24084/repqj16.285","DOIUrl":"https://doi.org/10.24084/repqj16.285","url":null,"abstract":"This paper analyses the viability of a new microcogeneration system with a Stirling engine-based micro-CHP (combined heat and power) and renewable solar energy: thermal and photovoltaic system in order to supply the energy demand of an isolated home. The right sizing of solar energy systems should allow optimizing both the available solar resources and gas consumption for one specific climatological conditions. The present work shows the first results of the experimental study of a micro-cogeneration system (micro-CHP based on the Stirling motor) supported with renewable energy. The system of self-government covers the theoretical daily consumption of a house. In this results, the different contributions of the subsystems to the daily thermal and electric demand are displayed.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74244566","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}
M. Freitas, G. P. Viajante, D. Andrade, E. N. Chaves, C. A. Queiroz, L. Silva, R.V.R. Silva, R. Fideli, J. L. Domingos
{"title":"Comparative Analysis of the 6/4 and 8/6 Switched Reluctance Generator in Different Operating Conditions","authors":"M. Freitas, G. P. Viajante, D. Andrade, E. N. Chaves, C. A. Queiroz, L. Silva, R.V.R. Silva, R. Fideli, J. L. Domingos","doi":"10.24084/REPQJ16.360","DOIUrl":"https://doi.org/10.24084/REPQJ16.360","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80466471","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}
This paper discusses a systematic approach for the development of a solar powered self-sustainable energy system. In remote locations, self-sustainable energy system configurations are of interest, and may prove more cost effective than a grid connected systems. This paper investigates a typical self-sustainable energy system configuration and performance optimization. The potential benefits of such a system design is investigated using data collected at a specific location and the performance of the system under variable conditions determined. This paper also described an optimal design and implementation of an efficient self-sustainable energy system.
{"title":"Development of a solar powered self-sustainable energy system","authors":"E. Constant, K. Thanapalan, M. Bowkett","doi":"10.24084/REPQJ16.299","DOIUrl":"https://doi.org/10.24084/REPQJ16.299","url":null,"abstract":"This paper discusses a systematic approach for the development of a solar powered self-sustainable energy system. In remote locations, self-sustainable energy system configurations are of interest, and may prove more cost effective than a grid connected systems. This paper investigates a typical self-sustainable energy system configuration and performance optimization. The potential benefits of such a system design is investigated using data collected at a specific location and the performance of the system under variable conditions determined. This paper also described an optimal design and implementation of an efficient self-sustainable energy system.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78396117","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}
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