Pub Date : 2016-03-22DOI: 10.1109/IREC.2016.7478919
Imen Jarraya, K. Ammous, Abdulrahman Alahdal, A. Ammous
Currently, Wind farms have undergone rapid developments. They are part of the most promising techniques in terms of ecology, competitiveness and job creation. Our objective in this article is modeling and simulation of the Wind System using MATLAB. The used model incorporates wind turbine controlled by a maximum power point tracking strategy, permanent magnet synchronous generator, PWM rectifier and inverter based on Hysteresis control strategy.
{"title":"Modeling and simulation of an on-grid variable speed aerogenerator","authors":"Imen Jarraya, K. Ammous, Abdulrahman Alahdal, A. Ammous","doi":"10.1109/IREC.2016.7478919","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478919","url":null,"abstract":"Currently, Wind farms have undergone rapid developments. They are part of the most promising techniques in terms of ecology, competitiveness and job creation. Our objective in this article is modeling and simulation of the Wind System using MATLAB. The used model incorporates wind turbine controlled by a maximum power point tracking strategy, permanent magnet synchronous generator, PWM rectifier and inverter based on Hysteresis control strategy.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125905826","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 : 2016-03-22DOI: 10.1109/IREC.2016.7507628
A. Althobaiti, M. Armstrong, M. Elgendy
In recent years, there has been a rapid increase in the number of grid connected three phase inverter systems being connected to the distribution network. As a result, the need for high quality, low harmonic distortion, current injection into the grid is essential. To achieve this, careful consideration of the inverter controller is necessary. Many control methods are based on the traditional proportional-integral controller (PI), or the more recently adopted Proportional Resonant controller (PR). This paper presents a new technique of minimizing the error of the current control in a three phase grid connected inverter using a readily implementable Adaptive Proportional Resonance controller. Simulation and experimental results demonstrate the effectiveness of the proposed technique.
{"title":"Current control of three-phase grid-connected PV inverters using adaptive PR controller","authors":"A. Althobaiti, M. Armstrong, M. Elgendy","doi":"10.1109/IREC.2016.7507628","DOIUrl":"https://doi.org/10.1109/IREC.2016.7507628","url":null,"abstract":"In recent years, there has been a rapid increase in the number of grid connected three phase inverter systems being connected to the distribution network. As a result, the need for high quality, low harmonic distortion, current injection into the grid is essential. To achieve this, careful consideration of the inverter controller is necessary. Many control methods are based on the traditional proportional-integral controller (PI), or the more recently adopted Proportional Resonant controller (PR). This paper presents a new technique of minimizing the error of the current control in a three phase grid connected inverter using a readily implementable Adaptive Proportional Resonance controller. Simulation and experimental results demonstrate the effectiveness of the proposed technique.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114933813","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478873
T. Azizi, A. Touihri, Zouhour Kadachi, R. Gharbi, M. B. Karoui
Photovoltaic solar cells are non-linear devices, whose modeling is not an easy task. Different models for solar cells are available in the literature. Dye-sensitized solar cells (DSSCs) are considered as third photovoltaic generation and are proposed as alternative to conventional silicon solar cells. They have numerous advantages over silicon based solar cells such as low materials cost and simplicity of production methods. In this work we present studies on the DSSC fabricated by electrophoresis deposition techniques (EPD) and sensitized by several natural dyes. Comparative study between two Pspice electrical models using four and five parameters has been investigated using experimental results deduced from I-V curve. The obtained parameters are used as Pspice input data to simulate the I-V curve for the two models. The results show that the four parameters model is in agreement with the experimental results.
{"title":"Comparative study between two electrical model using experimental IȃV curves for DSSCs prepared by electrophoretic technics","authors":"T. Azizi, A. Touihri, Zouhour Kadachi, R. Gharbi, M. B. Karoui","doi":"10.1109/IREC.2016.7478873","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478873","url":null,"abstract":"Photovoltaic solar cells are non-linear devices, whose modeling is not an easy task. Different models for solar cells are available in the literature. Dye-sensitized solar cells (DSSCs) are considered as third photovoltaic generation and are proposed as alternative to conventional silicon solar cells. They have numerous advantages over silicon based solar cells such as low materials cost and simplicity of production methods. In this work we present studies on the DSSC fabricated by electrophoresis deposition techniques (EPD) and sensitized by several natural dyes. Comparative study between two Pspice electrical models using four and five parameters has been investigated using experimental results deduced from I-V curve. The obtained parameters are used as Pspice input data to simulate the I-V curve for the two models. The results show that the four parameters model is in agreement with the experimental results.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116102100","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478861
F. Belkhir, Georg Frey
Using physical instrumentation and measuring network to monitor a large set of process variables is of a crucial importance in any industrial plant. However, endowing the process with more sophisticated instrumentation will not only increase the investment capital in the plant, but also the maintenance planning and scheduling time. Furthermore, some process variables that are of relevance cannot be measured. A cost-effective way to overcome such limitations is by using the soft-sensing methodology. In this work, a virtual sensor is developed for a biomass heat recovery power plant to predict multifarious key process variables that will help in estimating the calorific value of biomass solid fuel. For this purpose, the process measurements, obtained from the existing physical instrumentation, are leveraged by using an analytic model, which is based on biomass combustion stoichiometry. Finally, the concept is validated by comparing the predicted steam amount obtained from the soft-sensor against the measured one.
{"title":"Soft-sensing of key process variables in a biomass combustion plant","authors":"F. Belkhir, Georg Frey","doi":"10.1109/IREC.2016.7478861","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478861","url":null,"abstract":"Using physical instrumentation and measuring network to monitor a large set of process variables is of a crucial importance in any industrial plant. However, endowing the process with more sophisticated instrumentation will not only increase the investment capital in the plant, but also the maintenance planning and scheduling time. Furthermore, some process variables that are of relevance cannot be measured. A cost-effective way to overcome such limitations is by using the soft-sensing methodology. In this work, a virtual sensor is developed for a biomass heat recovery power plant to predict multifarious key process variables that will help in estimating the calorific value of biomass solid fuel. For this purpose, the process measurements, obtained from the existing physical instrumentation, are leveraged by using an analytic model, which is based on biomass combustion stoichiometry. Finally, the concept is validated by comparing the predicted steam amount obtained from the soft-sensor against the measured one.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122235127","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478877
A. Balaska, A. Tahri, A. Stambouli, F. Tahri, T. Oozeki
The aim of this paper is to present a comparative study of performance evaluation of photovoltaic (PV) modules as part of the Sahara Solar Breeder project (SSB). In the end of 2013, five different PV module technologies which are: m-Si, CIS, HIT, Back Contact and a-Si_μc-Si, and a weather station were installed at the city of Saida located at the gate of the great Algeria's Sahara desert. The objective of the present work is the study of the behavior of solar PV modules in outdoor conditions and to compare their performance parameters in order to find which technologies are suitable for the Saharan climate conditions. The modules were characterised by measuring their I-V curve in outdoor at the location without shadow. Moreover measurements of various parameters such as irradiance, temperature and humidity, using the weather station were performed. Finally performance parameters as performance ratio, energy yield and temperature losses are given and analysed.
{"title":"Comparative performance evaluation of different technologies of photovoltaic modules in Algeria","authors":"A. Balaska, A. Tahri, A. Stambouli, F. Tahri, T. Oozeki","doi":"10.1109/IREC.2016.7478877","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478877","url":null,"abstract":"The aim of this paper is to present a comparative study of performance evaluation of photovoltaic (PV) modules as part of the Sahara Solar Breeder project (SSB). In the end of 2013, five different PV module technologies which are: m-Si, CIS, HIT, Back Contact and a-Si_μc-Si, and a weather station were installed at the city of Saida located at the gate of the great Algeria's Sahara desert. The objective of the present work is the study of the behavior of solar PV modules in outdoor conditions and to compare their performance parameters in order to find which technologies are suitable for the Saharan climate conditions. The modules were characterised by measuring their I-V curve in outdoor at the location without shadow. Moreover measurements of various parameters such as irradiance, temperature and humidity, using the weather station were performed. Finally performance parameters as performance ratio, energy yield and temperature losses are given and analysed.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129315309","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478889
I. Yahyaoui, F. Tadeo, Marcelo Eduardo Vieira Segatto
This paper focuses on the powers control of a photovoltaic generator connected to a single- phase grid. In addition to the solar panels, the system is equipped with a dc-dc converter, which allows the panels' maximum power point to be tracked, a single phase inverter, a filter, and loads, all connected to a single phase utility grid. In this study, the voltage oriented control method is used to control the power injected into the grid during the daytime, taking into account the grid characteristics. Simulation results are shown for the analysis of performance of a grid-coupled PV system under solar radiation change.
{"title":"Control strategy for small-scale photovoltaic systems connected to single-phase grids","authors":"I. Yahyaoui, F. Tadeo, Marcelo Eduardo Vieira Segatto","doi":"10.1109/IREC.2016.7478889","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478889","url":null,"abstract":"This paper focuses on the powers control of a photovoltaic generator connected to a single- phase grid. In addition to the solar panels, the system is equipped with a dc-dc converter, which allows the panels' maximum power point to be tracked, a single phase inverter, a filter, and loads, all connected to a single phase utility grid. In this study, the voltage oriented control method is used to control the power injected into the grid during the daytime, taking into account the grid characteristics. Simulation results are shown for the analysis of performance of a grid-coupled PV system under solar radiation change.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114821989","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478932
Béchir Wanassi, Ichrak Ben Hariz, C. Ghimbeu, C. Vaulot, M. B. Ben Hassen, M. Jeguirim
In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian spinning industry. AC was prepared using a carbonization at 700°C followed by a chemical activation (with H3PO4 and ZnCL2). Thermogravimetric analysis was used to analyze the carbonization step. There was a considerable decrease in weight loss in the region of 280°C to 380°C attributed mainly to the cellulose degradation. In a second step, the activated carbons were characterized different analytical techniques. In particular, the effect of carbonization and chemical activation on the cross-section and surface was detected with SEM. In addition, FTIR analysis showed the disappearance of many surface groups in range between 2000 cm-1 and 4000 cm-1 after activation while TPD-MS showed that with the acidic character of the activated carbon with H3PO4 comparing to ZnCL2. ZnCL2 activated carbon was used for the removal of textile dye, namely Alizarin S from aqueous solution for different experimental conditions. The maximum adsorption capacity of Alizarin S was Qmax= 181mg/g obtained at pH =3 and T=25°C.
{"title":"Valorization of cotton waste generated from the Tunisian textile industry through the production of adsorbents carbonaceous materials","authors":"Béchir Wanassi, Ichrak Ben Hariz, C. Ghimbeu, C. Vaulot, M. B. Ben Hassen, M. Jeguirim","doi":"10.1109/IREC.2016.7478932","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478932","url":null,"abstract":"In this study, activated carbon (AC) was prepared from waste cotton generated from the Tunisian spinning industry. AC was prepared using a carbonization at 700°C followed by a chemical activation (with H3PO4 and ZnCL2). Thermogravimetric analysis was used to analyze the carbonization step. There was a considerable decrease in weight loss in the region of 280°C to 380°C attributed mainly to the cellulose degradation. In a second step, the activated carbons were characterized different analytical techniques. In particular, the effect of carbonization and chemical activation on the cross-section and surface was detected with SEM. In addition, FTIR analysis showed the disappearance of many surface groups in range between 2000 cm-1 and 4000 cm-1 after activation while TPD-MS showed that with the acidic character of the activated carbon with H3PO4 comparing to ZnCL2. ZnCL2 activated carbon was used for the removal of textile dye, namely Alizarin S from aqueous solution for different experimental conditions. The maximum adsorption capacity of Alizarin S was Qmax= 181mg/g obtained at pH =3 and T=25°C.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125690562","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478926
D. Achour, A. Chaib, M. Kesraoui
In this paper a power control and load management strategy for an isolated hybrid energy system is proposed. The presented solution can deal with all situations especially when the lack amount of supply power is less than 30% of maximum power of the Diesel Generator. The whole system has been simulated using SIMULINK software. An added value of the work is the Hardware in the loop test where the load power variation has been input to the SIMULINK Program through a data acquisition card. The results showed that the responses follow the commands and the permanent supply of the loads was assured. The effectiveness of the proposed method has been proved by the obtained satisfying results.
{"title":"Power control and load management of an isolated hybrid energy system","authors":"D. Achour, A. Chaib, M. Kesraoui","doi":"10.1109/IREC.2016.7478926","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478926","url":null,"abstract":"In this paper a power control and load management strategy for an isolated hybrid energy system is proposed. The presented solution can deal with all situations especially when the lack amount of supply power is less than 30% of maximum power of the Diesel Generator. The whole system has been simulated using SIMULINK software. An added value of the work is the Hardware in the loop test where the load power variation has been input to the SIMULINK Program through a data acquisition card. The results showed that the responses follow the commands and the permanent supply of the loads was assured. The effectiveness of the proposed method has been proved by the obtained satisfying results.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125768326","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478953
S. Omar, A. Helal, I. ElArabawy
Due to the drastic increase of the wind turbines installed capacity, the grid integration codes address many restrictions over their performance during both normal and abnormal conditions. The main aim of such codes is to operate the wind turbines like other conventional power sources. In this paper a series grid side converter is added to the conventional DFIG wind turbine configuration to add low voltage ride through capability. This target is achieved without the need to neither measure nor estimate the stator voltage or flux, hence simplifying the control scheme. The system model and the control scheme for 1.5 MW DFIG wind turbine are constructed and simulated using MATLAB/SIMULINK environment. The simulation results are intensively proving the effectiveness of the proposed scheme.
{"title":"Stator voltage sensorless DFIG with low voltage ride-through capability using series and parallel grid side converters","authors":"S. Omar, A. Helal, I. ElArabawy","doi":"10.1109/IREC.2016.7478953","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478953","url":null,"abstract":"Due to the drastic increase of the wind turbines installed capacity, the grid integration codes address many restrictions over their performance during both normal and abnormal conditions. The main aim of such codes is to operate the wind turbines like other conventional power sources. In this paper a series grid side converter is added to the conventional DFIG wind turbine configuration to add low voltage ride through capability. This target is achieved without the need to neither measure nor estimate the stator voltage or flux, hence simplifying the control scheme. The system model and the control scheme for 1.5 MW DFIG wind turbine are constructed and simulated using MATLAB/SIMULINK environment. The simulation results are intensively proving the effectiveness of the proposed scheme.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"39 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131514136","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 : 2016-03-22DOI: 10.1109/IREC.2016.7478934
Dalia Fendri, M. Chaabene
Renewable energies represent suitable resources for loads supply in isolated area. Photovoltaic energy have great potential in sunny regions. An adequate energy planning should guarantee the functioning of priority loads face to climate instability. Timed Hybrid Petri Nets (THPN) formalism is proposed to model a standalone PVPs/Batteries system installed in isolated chalet. By means of this model, an energy planning algorithm is developed so as to satisfy the load demand and to make maximum use of renewable generation and energy storage. The algorithm makes decision on loads operation times based on a predefined priority (priority and secondary load). Obtained results show that the loads operation planning satisfies the priority loads during the whole day and covers the secondary load energy.
{"title":"Timed Hybrid Petri Net based modelling of a standalone PVPs/batteries system: Application to loads operation planning","authors":"Dalia Fendri, M. Chaabene","doi":"10.1109/IREC.2016.7478934","DOIUrl":"https://doi.org/10.1109/IREC.2016.7478934","url":null,"abstract":"Renewable energies represent suitable resources for loads supply in isolated area. Photovoltaic energy have great potential in sunny regions. An adequate energy planning should guarantee the functioning of priority loads face to climate instability. Timed Hybrid Petri Nets (THPN) formalism is proposed to model a standalone PVPs/Batteries system installed in isolated chalet. By means of this model, an energy planning algorithm is developed so as to satisfy the load demand and to make maximum use of renewable generation and energy storage. The algorithm makes decision on loads operation times based on a predefined priority (priority and secondary load). Obtained results show that the loads operation planning satisfies the priority loads during the whole day and covers the secondary load energy.","PeriodicalId":190533,"journal":{"name":"2016 7th International Renewable Energy Congress (IREC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243645","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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