Pub Date : 2021-07-31DOI: 10.15866/irecon.v9i4.20152
Apoorva Srivastava, R. S. Bajpai
This paper aims to integrate and control renewable energy sources for power management and operation of a standalone hybrid DC microgrid. The system consists of photovoltaic arrays, wind turbine and fuel cells with storage batteries as backup. It proposes a Model Predictive Control (MPC) scheme that accurately tracks the desired load current and output voltage for relative power sharing among multiple distributed sustainable energy resources. Sustainable energy sources are controlled to deliver maximum power using DC-DC boost converters. MPPT control strategy is designed based on model predictive control, which evaluates the suitable power references at each sampling time with optimal cost function, in order to achieve desired results under varying conditions of renewable energy sources. Commonly used Incremental Conductance algorithm is used as a base framework along with MPC to design MPPT controller. For power flow control, MPC controller with discrete time Kalman filter has been designed for modifying voltage and current references depending upon the input/output power variations from sources and loads respectively. The proposed MPC scheme has fast tracking response that can achieve the optimal power management between the Distributed Energy Resources (DERs) units, and loads connected to DC microgrid. The results are validated using MATLAB/SIMULINK simulation and experimental studies.
{"title":"Model Predictive Control of Renewable Energy Sources in DC Microgrid for Power Flow Control","authors":"Apoorva Srivastava, R. S. Bajpai","doi":"10.15866/irecon.v9i4.20152","DOIUrl":"https://doi.org/10.15866/irecon.v9i4.20152","url":null,"abstract":"This paper aims to integrate and control renewable energy sources for power management and operation of a standalone hybrid DC microgrid. The system consists of photovoltaic arrays, wind turbine and fuel cells with storage batteries as backup. It proposes a Model Predictive Control (MPC) scheme that accurately tracks the desired load current and output voltage for relative power sharing among multiple distributed sustainable energy resources. Sustainable energy sources are controlled to deliver maximum power using DC-DC boost converters. MPPT control strategy is designed based on model predictive control, which evaluates the suitable power references at each sampling time with optimal cost function, in order to achieve desired results under varying conditions of renewable energy sources. Commonly used Incremental Conductance algorithm is used as a base framework along with MPC to design MPPT controller. For power flow control, MPC controller with discrete time Kalman filter has been designed for modifying voltage and current references depending upon the input/output power variations from sources and loads respectively. The proposed MPC scheme has fast tracking response that can achieve the optimal power management between the Distributed Energy Resources (DERs) units, and loads connected to DC microgrid. The results are validated using MATLAB/SIMULINK simulation and experimental studies.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43094899","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}
Pub Date : 2021-07-31DOI: 10.15866/irecon.v9i4.19563
Angelica Palacios, Dario Amaya, Olga Ramos
Solar collectors are one of the higher technologies that involve solar radiation available on surface Earth. However, actually, numerous researches have been developed to improve thermal performance in all system, including surface concentration, receiver, transfer fluid and glass cover. The results of the design, the modeling, and the simulation of a parabolic trough collector and central receiver with three different geometries coupled under serial and parallel configuration are presented in this paper. Different geometries have been proposed in receiver pipe in order to increase transfer surface area and improve thermal efficiency. Each model has been simulated by Computational Fluid Dynamics (CFD) in SolidWorks® software specialized on thermal analysis. As results, the maximum temperature of 86°C has been achieved in this research with two collectors with fractal F1 receiver coupled in parallel configuration. In addition, the lower temperature has been obtained with a single cylindrical collector with a final temperature of 61°C. The principal contribution of this works is the analysis of the best configuration to a solar concentrate system as parabolic trough collector, under a serial or parabolic scheme with the purpose of enhancing the heat transfer on receiver and working fluid. Likewise, a novel design in receiver is proposed based on fractal geometries, which show in the study the best temperature results.
{"title":"Thermal Analysis of a Parabolic Trough Collectors with Cylindrical and Fractal Receiver Under Serial-Parallel Configuration","authors":"Angelica Palacios, Dario Amaya, Olga Ramos","doi":"10.15866/irecon.v9i4.19563","DOIUrl":"https://doi.org/10.15866/irecon.v9i4.19563","url":null,"abstract":"Solar collectors are one of the higher technologies that involve solar radiation available on surface Earth. However, actually, numerous researches have been developed to improve thermal performance in all system, including surface concentration, receiver, transfer fluid and glass cover. The results of the design, the modeling, and the simulation of a parabolic trough collector and central receiver with three different geometries coupled under serial and parallel configuration are presented in this paper. Different geometries have been proposed in receiver pipe in order to increase transfer surface area and improve thermal efficiency. Each model has been simulated by Computational Fluid Dynamics (CFD) in SolidWorks® software specialized on thermal analysis. As results, the maximum temperature of 86°C has been achieved in this research with two collectors with fractal F1 receiver coupled in parallel configuration. In addition, the lower temperature has been obtained with a single cylindrical collector with a final temperature of 61°C. The principal contribution of this works is the analysis of the best configuration to a solar concentrate system as parabolic trough collector, under a serial or parabolic scheme with the purpose of enhancing the heat transfer on receiver and working fluid. Likewise, a novel design in receiver is proposed based on fractal geometries, which show in the study the best temperature results.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43942157","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}
Pub Date : 2021-05-31DOI: 10.15866/irecon.v9i3.19562
Diego Rojas, Olga Ramos, Dario Amaya
{"title":"Optimization of Flat-Plate Solar Air Heater for Drying Mangifera Indica by Using Karush Kuhn Tucker (KKT) Conditions","authors":"Diego Rojas, Olga Ramos, Dario Amaya","doi":"10.15866/irecon.v9i3.19562","DOIUrl":"https://doi.org/10.15866/irecon.v9i3.19562","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41535725","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}
Pub Date : 2021-05-31DOI: 10.15866/irecon.v9i3.19646
A. Adeyanju
{"title":"Thermal Pyrolysis for the Transformation of Used Abandon Tire to Liquid Fuel","authors":"A. Adeyanju","doi":"10.15866/irecon.v9i3.19646","DOIUrl":"https://doi.org/10.15866/irecon.v9i3.19646","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42230466","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}
Pub Date : 2021-05-31DOI: 10.15866/irecon.v9i3.19929
S. Uhunamure, K. Shale
{"title":"Biogas, a Prospect for Renewable Energy Resource in South Africa","authors":"S. Uhunamure, K. Shale","doi":"10.15866/irecon.v9i3.19929","DOIUrl":"https://doi.org/10.15866/irecon.v9i3.19929","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43347130","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}
Pub Date : 2021-05-31DOI: 10.15866/irecon.v9i3.20365
N. Azazy, W. Helmy, H. Hasanien
{"title":"Optimal Siting and Sizing of DGs on Distribution Networks Using Grey Wolf Algorithm","authors":"N. Azazy, W. Helmy, H. Hasanien","doi":"10.15866/irecon.v9i3.20365","DOIUrl":"https://doi.org/10.15866/irecon.v9i3.20365","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49014863","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}
Pub Date : 2021-05-31DOI: 10.15866/irecon.v9i3.20066
Haitham A. Taha, M. Alham, H. Youssef
The wind and solar Distributed Generations (DGs) are currently the most used Renewable Energy Sources (RES) based DGs worldwide. The integration of RES in distribution networks has attracted great interest for several objectives; one of the main objectives is to maximize the RES hosting capacity of distribution networks. The wind speed and solar irradiance along with their associated generated power are stochastic in nature and uncertain, and thus their uncertainty should be considered. In this study, a general frame work is presented for the integration of renewable wind and solar DGs, Demand Response (DR), and renewable energy curtailment for hosting capacity maximization of distribution networks, considering renewables uncertainty. The proposed framework is implemented and tested on a standard IEEE 33-radial bus system. The obtained results demonstrate that using different types of renewables is more effective than using only one type for hosting capacity maximization of distribution networks. Moreover, using DR and renewable energy curtailment have proved their effectiveness as active network management (ANM) tools for enhancing the hosting capacity by controlling the load variation and renewables generation, respectively.
{"title":"Hosting Capacity Maximization of Wind and Solar DGs in Distribution Networks Using Demand Response and Renewables Curtailment","authors":"Haitham A. Taha, M. Alham, H. Youssef","doi":"10.15866/irecon.v9i3.20066","DOIUrl":"https://doi.org/10.15866/irecon.v9i3.20066","url":null,"abstract":"The wind and solar Distributed Generations (DGs) are currently the most used Renewable Energy Sources (RES) based DGs worldwide. The integration of RES in distribution networks has attracted great interest for several objectives; one of the main objectives is to maximize the RES hosting capacity of distribution networks. The wind speed and solar irradiance along with their associated generated power are stochastic in nature and uncertain, and thus their uncertainty should be considered. In this study, a general frame work is presented for the integration of renewable wind and solar DGs, Demand Response (DR), and renewable energy curtailment for hosting capacity maximization of distribution networks, considering renewables uncertainty. The proposed framework is implemented and tested on a standard IEEE 33-radial bus system. The obtained results demonstrate that using different types of renewables is more effective than using only one type for hosting capacity maximization of distribution networks. Moreover, using DR and renewable energy curtailment have proved their effectiveness as active network management (ANM) tools for enhancing the hosting capacity by controlling the load variation and renewables generation, respectively.","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42217715","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}
Pub Date : 2020-09-30DOI: 10.15866/irecon.v8i5.19105
J. Cárdenas, G. Valencia, J. Duarte Forero
{"title":"Comparative Analysis of Supercritical CO2 Brayton Cycles with Simple and Partial Cooling Configurations","authors":"J. Cárdenas, G. Valencia, J. Duarte Forero","doi":"10.15866/irecon.v8i5.19105","DOIUrl":"https://doi.org/10.15866/irecon.v8i5.19105","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42347107","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}
Pub Date : 2020-09-30DOI: 10.15866/irecon.v8i5.19362
Mohamed Makhad, K. Zazi, M. Zazi, Azeddine Loulijat
{"title":"Smooth Super Twisting Sliding Mode Control for Permanent Magnet Synchronous Generator Based Wind Energy Conversion System","authors":"Mohamed Makhad, K. Zazi, M. Zazi, Azeddine Loulijat","doi":"10.15866/irecon.v8i5.19362","DOIUrl":"https://doi.org/10.15866/irecon.v8i5.19362","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48733172","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}
Pub Date : 2020-09-30DOI: 10.15866/irecon.v8i5.19490
M. A. Memon, G. M. Bhutto
{"title":"Integration of Solar Based Energy Sources in Pakistan - A Review","authors":"M. A. Memon, G. M. Bhutto","doi":"10.15866/irecon.v8i5.19490","DOIUrl":"https://doi.org/10.15866/irecon.v8i5.19490","url":null,"abstract":"","PeriodicalId":37583,"journal":{"name":"International Journal on Energy Conversion","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41361449","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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