Pub Date : 2017-11-01DOI: 10.1109/ICRERA.2017.8191089
A. Takahashi, T. Yachi
In order to efficiently use solar energy to generate electrical power, three-dimensional (3D) Fibonacci number photovoltaic modules (FPMs), which are designed in part based on natural plant leaf arrangements were proposed. It has been also proposed the large-scale power generation systems using multiple FPMs (hereinafter, power generation forests), and shown its power generation characteristics by the simulation with only direct solar radiation. In this paper, we use a newly developed method to also take into account scattered light. In order to maximize power generation from a FPM power generation forest, it will be necessary to more thoroughly investigate the power generated by single and multiple FPMs using both direct and indirect light in order to determine the most effective FPM arrangement.
{"title":"Arrangement of Fibonacci number photovoltaic modules by the simulation using direct and scattered light for power generation forests","authors":"A. Takahashi, T. Yachi","doi":"10.1109/ICRERA.2017.8191089","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191089","url":null,"abstract":"In order to efficiently use solar energy to generate electrical power, three-dimensional (3D) Fibonacci number photovoltaic modules (FPMs), which are designed in part based on natural plant leaf arrangements were proposed. It has been also proposed the large-scale power generation systems using multiple FPMs (hereinafter, power generation forests), and shown its power generation characteristics by the simulation with only direct solar radiation. In this paper, we use a newly developed method to also take into account scattered light. In order to maximize power generation from a FPM power generation forest, it will be necessary to more thoroughly investigate the power generated by single and multiple FPMs using both direct and indirect light in order to determine the most effective FPM arrangement.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"1 1","pages":"378-382"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83246132","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191256
Nagham El Ghossein, A. Sari, P. Venet
Lithium-Ion Capacitors (LICs) are a new technology of hybrid supercapacitors that aims to deliver relatively high energy and high power. Therefore, they are known for their constitution inspired from lithium-ion batteries and conventional supercapacitors. Due to their hybrid structure, they have a unique behavior during aging. This paper concerns the effects of high temperatures (60°C and 70°C) and two states of charge (fully charged and fully discharged) on the acceleration of aging of LICs. Fully charged and fully discharged cells were mounted at high temperatures and the evolution of their properties was monitored during 12 months. Electrochemical Impedance spectroscopy was the tool for regularly measuring their capacity. Results showed that fully discharged LICs encounter huge deterioration of performance. For example, at 60°C, a capacity decrease of 45 % was found. On another hand, fully charged cells lost around 12 % of their initial capacity Therefore, the state of charge that should be avoided when leaving LICs at rest is introduced for the first time in a paper. Moreover, based on the comparison of capacity decrease of fully discharged cells at different temperatures, the parameters of Arrhenius equation were analyzed. A physicochemical interpretation of the results was made according to the established results.
{"title":"Degradation behavior of Lithium-Ion capacitors during calendar aging","authors":"Nagham El Ghossein, A. Sari, P. Venet","doi":"10.1109/ICRERA.2017.8191256","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191256","url":null,"abstract":"Lithium-Ion Capacitors (LICs) are a new technology of hybrid supercapacitors that aims to deliver relatively high energy and high power. Therefore, they are known for their constitution inspired from lithium-ion batteries and conventional supercapacitors. Due to their hybrid structure, they have a unique behavior during aging. This paper concerns the effects of high temperatures (60°C and 70°C) and two states of charge (fully charged and fully discharged) on the acceleration of aging of LICs. Fully charged and fully discharged cells were mounted at high temperatures and the evolution of their properties was monitored during 12 months. Electrochemical Impedance spectroscopy was the tool for regularly measuring their capacity. Results showed that fully discharged LICs encounter huge deterioration of performance. For example, at 60°C, a capacity decrease of 45 % was found. On another hand, fully charged cells lost around 12 % of their initial capacity Therefore, the state of charge that should be avoided when leaving LICs at rest is introduced for the first time in a paper. Moreover, based on the comparison of capacity decrease of fully discharged cells at different temperatures, the parameters of Arrhenius equation were analyzed. A physicochemical interpretation of the results was made according to the established results.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"3 1","pages":"142-146"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83310355","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191110
A. Gutiérrez, M. Bressan, J. F. Jimenez, Corinne Alonso
This paper presents the development of a real-time Supervision Hardware-in-the-Loop (HIL) emulator of shaded PV systems. This study is focused on shaded conditions due to the impact of shadows in the final energy production and the global structural healthy. In this context, we propose a methodology to emulate in real-time the shaded PV system behavior. This proposed methodology is intended for evaluation of supervision and fault detection strategies using a Hardware-in-the-Loop approach. This study takes advantage of FPGAs given their features of adaptability and parallel processing suitable for emulation of complex shaded PV systems. The proposed methodology employs the High Level Specification of Embedded Systems (HiLeS) for automatic VHDL code generation, and the graphical Systems Modeling Language (SysML) to represent the PV system behavior. Experimental results show the emulation of current-voltage behavior of PV modules under normal and shaded conditions. Emulation results are compared with experimental and conventional computational approaches shown a high degree of accuracy.
{"title":"Development of real-time supervision HIL emulator of shaded PV systems","authors":"A. Gutiérrez, M. Bressan, J. F. Jimenez, Corinne Alonso","doi":"10.1109/ICRERA.2017.8191110","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191110","url":null,"abstract":"This paper presents the development of a real-time Supervision Hardware-in-the-Loop (HIL) emulator of shaded PV systems. This study is focused on shaded conditions due to the impact of shadows in the final energy production and the global structural healthy. In this context, we propose a methodology to emulate in real-time the shaded PV system behavior. This proposed methodology is intended for evaluation of supervision and fault detection strategies using a Hardware-in-the-Loop approach. This study takes advantage of FPGAs given their features of adaptability and parallel processing suitable for emulation of complex shaded PV systems. The proposed methodology employs the High Level Specification of Embedded Systems (HiLeS) for automatic VHDL code generation, and the graphical Systems Modeling Language (SysML) to represent the PV system behavior. Experimental results show the emulation of current-voltage behavior of PV modules under normal and shaded conditions. Emulation results are compared with experimental and conventional computational approaches shown a high degree of accuracy.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"1 1","pages":"499-504"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83353552","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191280
G. Malagón-Carvajal, C. Duarte, G. Ordóñez-Plata, C. Almeida, N. Kagan
The Compact Fluorescent Lamps (CFLs) are widely adopted in residential and commercial sector. This adoption is proposed following the energy conservation and environmental protection efforts. Despite, the CFLs consume low power, many users using these loads can cause a harmonic impact depending of the Attenuation-Amplification Effect. For instance, if this Effect is neglected (e.g., using Harmonic Current Source Model-HCSM), the collective harmonic current of these loads can be poorly estimated and the methods used to reduce harmonic distortion and to improve the power quality can be insufficient. This work proposes a Total Attenuation-Amplification Factor (TAF Index) to assess the relation with the widely adopted THDI Index. Likewise, this work analyses 1575 voltage and current measurements studying the variation incidence of wire length, distortion and voltage regulation on the Attenuation-Amplification Effect for a single CFL connected at the same time. Thus, this Effect is also assessed on 37 CFLs connected one by one using a CFL Time Domain Model. The results show low incidence on the Attenuation-Amplification Effect when a single load is fed and the voltage regulation and wire length of the branch circuit are varied. However, based on simulations an Amplification Effect is presented when several CFLs are connected in parallel configuration on distorted supply voltage.
{"title":"Harmonic attenuation-amplification effect on lighting branch circuits","authors":"G. Malagón-Carvajal, C. Duarte, G. Ordóñez-Plata, C. Almeida, N. Kagan","doi":"10.1109/ICRERA.2017.8191280","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191280","url":null,"abstract":"The Compact Fluorescent Lamps (CFLs) are widely adopted in residential and commercial sector. This adoption is proposed following the energy conservation and environmental protection efforts. Despite, the CFLs consume low power, many users using these loads can cause a harmonic impact depending of the Attenuation-Amplification Effect. For instance, if this Effect is neglected (e.g., using Harmonic Current Source Model-HCSM), the collective harmonic current of these loads can be poorly estimated and the methods used to reduce harmonic distortion and to improve the power quality can be insufficient. This work proposes a Total Attenuation-Amplification Factor (TAF Index) to assess the relation with the widely adopted THDI Index. Likewise, this work analyses 1575 voltage and current measurements studying the variation incidence of wire length, distortion and voltage regulation on the Attenuation-Amplification Effect for a single CFL connected at the same time. Thus, this Effect is also assessed on 37 CFLs connected one by one using a CFL Time Domain Model. The results show low incidence on the Attenuation-Amplification Effect when a single load is fed and the voltage regulation and wire length of the branch circuit are varied. However, based on simulations an Amplification Effect is presented when several CFLs are connected in parallel configuration on distorted supply voltage.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"42 1","pages":"283-289"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90948773","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191275
M. A. Kazemi, R. Sabzehgar, M. Rasouli
This paper presents an optimized scheduling method for Plugged-in Electric Vehicles (PEV) that are connected to a residential smart microgrid. Two modes of operation are studied: grid-tied and islanded mode. A Genetic Algorithm (GA)-based method is utilized to optimize an objective function, which includes the cost of energy production, and guarantees the best possible energy consumption profile. The profit of the PEV owners, which has been ignored in most of the existing strategies, is included in the proposed objective function. Furthermore, in order to make the study more realistic, the grid constraints are taken into consideration in the new strategy. Simulation results are used to validate the effectiveness of the proposed approach.
{"title":"An optimized scheduling strategy for plugged-in electric vehicles integrated into a residential smart microgrid for both grid-tied and islanded modes","authors":"M. A. Kazemi, R. Sabzehgar, M. Rasouli","doi":"10.1109/ICRERA.2017.8191275","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191275","url":null,"abstract":"This paper presents an optimized scheduling method for Plugged-in Electric Vehicles (PEV) that are connected to a residential smart microgrid. Two modes of operation are studied: grid-tied and islanded mode. A Genetic Algorithm (GA)-based method is utilized to optimize an objective function, which includes the cost of energy production, and guarantees the best possible energy consumption profile. The profit of the PEV owners, which has been ignored in most of the existing strategies, is included in the proposed objective function. Furthermore, in order to make the study more realistic, the grid constraints are taken into consideration in the new strategy. Simulation results are used to validate the effectiveness of the proposed approach.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"34 1","pages":"251-256"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90240798","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191193
Fereshteh Poloei, A. Bakhshai, Yanfei Liu
This paper proposes a novel simple adaptive and online approach to estimate the state of charge (SOC) in Lithium Ion (Li-Ion) batteries based on a new model parameter identification method. First, a novel discrete model for the Li-ion battery is developed. This model is the key step in the development of the proposed parameter estimation algorithm. The estimated parameters are used for on-line calculation of the battery's open circuit voltage (VOC) that is required for SOC estimation with no prior knowledge of battery parameters. The paper then proposes a moving window lease mean square approach to adaptively update the estimated parameters in a very fast and accurate manner. The SOC estimation will be updated at the end of every window cycle. The proposed method for SOC estimation provides a simple, fast, comprehensive, and precise estimation capable to track the changes of the model/battery parameters. Unlike other estimation strategies, only battery terminal voltage and current measurements are required.
{"title":"A novel online adaptive fast simple state of charge estimation for Lithium Ion batteries","authors":"Fereshteh Poloei, A. Bakhshai, Yanfei Liu","doi":"10.1109/ICRERA.2017.8191193","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191193","url":null,"abstract":"This paper proposes a novel simple adaptive and online approach to estimate the state of charge (SOC) in Lithium Ion (Li-Ion) batteries based on a new model parameter identification method. First, a novel discrete model for the Li-ion battery is developed. This model is the key step in the development of the proposed parameter estimation algorithm. The estimated parameters are used for on-line calculation of the battery's open circuit voltage (VOC) that is required for SOC estimation with no prior knowledge of battery parameters. The paper then proposes a moving window lease mean square approach to adaptively update the estimated parameters in a very fast and accurate manner. The SOC estimation will be updated at the end of every window cycle. The proposed method for SOC estimation provides a simple, fast, comprehensive, and precise estimation capable to track the changes of the model/battery parameters. Unlike other estimation strategies, only battery terminal voltage and current measurements are required.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"40 1","pages":"914-918"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89583675","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191087
Rabin Dhakal, T. Bajracharya, S. Shakya, B. Kumal, K. Khanal, S. Williamson, S. Gautam, D. P. Ghale
The gravitational water vortex power plant (GWVPP) is a new type of low head turbine system in which a channel and basin structure is used to form a vortex, where the rotational energy from the water can be extracted through a runner. This study is focused on the optimization of the runner to improve the efficiency of the GWVPP. Computational fluid dynamics (CFD) analysis is carried out on three different runner designs with straight, twisted and curved blade profiles. ANSYS CFX was used to analyze the fluid flow through the channel, basin, turbine hub and blade, and results were used to evaluate the efficiency of each of the runner designs. The CFD analysis showed curved blade profile to be the most efficient profile, with a peak efficiency of 82%, compared to 46% for the straight blade runner and 63% for the twisted blade version. An experimental test of the turbine system was carried out to validate the runner analysis, in a scale version of the GWVPP. The testing showed that the runner behaved as predicted from the CFD analysis, and had a peak efficiency point of 71% at 0.5m head.
{"title":"Computational and experimental investigation of runner for gravitational water vortex power plant","authors":"Rabin Dhakal, T. Bajracharya, S. Shakya, B. Kumal, K. Khanal, S. Williamson, S. Gautam, D. P. Ghale","doi":"10.1109/ICRERA.2017.8191087","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191087","url":null,"abstract":"The gravitational water vortex power plant (GWVPP) is a new type of low head turbine system in which a channel and basin structure is used to form a vortex, where the rotational energy from the water can be extracted through a runner. This study is focused on the optimization of the runner to improve the efficiency of the GWVPP. Computational fluid dynamics (CFD) analysis is carried out on three different runner designs with straight, twisted and curved blade profiles. ANSYS CFX was used to analyze the fluid flow through the channel, basin, turbine hub and blade, and results were used to evaluate the efficiency of each of the runner designs. The CFD analysis showed curved blade profile to be the most efficient profile, with a peak efficiency of 82%, compared to 46% for the straight blade runner and 63% for the twisted blade version. An experimental test of the turbine system was carried out to validate the runner analysis, in a scale version of the GWVPP. The testing showed that the runner behaved as predicted from the CFD analysis, and had a peak efficiency point of 71% at 0.5m head.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"108 1","pages":"365-373"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87594678","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191252
M. Longo, W. Yaïci, F. Foiadelli
The reduction of air pollutant emissions for the resolution of preserving and improving air quality across the world is a major concern to which all current governments are assigning significant amounts of commitments and resources. The effective improvement of air pollution involves strategic investments in the commercialisation and adoption of clean energy technologies by both private and public organisations, the conversion of contemporary houses to ‘smart houses’, the diffusion of renewable energies including photovoltaic systems, wind farms, and different forms of bioenergies, and the integration of electric-powered vehicles. In concert with these concepts, this paper aims to investigate the potential, the technical benefits and environmental aspects in terms of air pollutant emissions reduction using photovoltaic (PV) charging systems located in home's roof located in Ottawa in the context of electric mobility. The PV system evaluated was a solar roof combined with a charging system for electric vehicle. Different scenarios have been analysed considering different model of EVs and different state of charge. The results demonstrate that the PV systems are effective to feed EVs and eliminate emissions.
{"title":"Electric vehicles charged with residential's roof solar photovoltaic system: A case study in Ottawa","authors":"M. Longo, W. Yaïci, F. Foiadelli","doi":"10.1109/ICRERA.2017.8191252","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191252","url":null,"abstract":"The reduction of air pollutant emissions for the resolution of preserving and improving air quality across the world is a major concern to which all current governments are assigning significant amounts of commitments and resources. The effective improvement of air pollution involves strategic investments in the commercialisation and adoption of clean energy technologies by both private and public organisations, the conversion of contemporary houses to ‘smart houses’, the diffusion of renewable energies including photovoltaic systems, wind farms, and different forms of bioenergies, and the integration of electric-powered vehicles. In concert with these concepts, this paper aims to investigate the potential, the technical benefits and environmental aspects in terms of air pollutant emissions reduction using photovoltaic (PV) charging systems located in home's roof located in Ottawa in the context of electric mobility. The PV system evaluated was a solar roof combined with a charging system for electric vehicle. Different scenarios have been analysed considering different model of EVs and different state of charge. The results demonstrate that the PV systems are effective to feed EVs and eliminate emissions.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"27 1","pages":"121-125"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87832672","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191178
A. Dheeraj, V. Rajini
The single-ended forward converter is a buck derived Isolated DC-DC Converter. Forward converter is most suitable for low voltage and high current applications microprocessors, battery chargers, EHV etc. The active clamp transformer reset technique offers many advantages over conventional single-ended reset techniques, including lower voltage stress on the main switch, the ability to switch at zero voltage and duty cycle operation above 50 percent. Several journals have compared the functional merits of the active clamp over the more extensively used RCD clamp, third winding and resonant reset techniques. This paper presents how to effectively to apply various active clamp circuits like positive clamp, negative clamp or combination of both positive and negative clamp for most favorable circuit performance. This paper summarizes a comparative analysis on various active clamping circuits for forward converter.
{"title":"Comparison of active clamping circuits for isolated forward converter","authors":"A. Dheeraj, V. Rajini","doi":"10.1109/ICRERA.2017.8191178","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191178","url":null,"abstract":"The single-ended forward converter is a buck derived Isolated DC-DC Converter. Forward converter is most suitable for low voltage and high current applications microprocessors, battery chargers, EHV etc. The active clamp transformer reset technique offers many advantages over conventional single-ended reset techniques, including lower voltage stress on the main switch, the ability to switch at zero voltage and duty cycle operation above 50 percent. Several journals have compared the functional merits of the active clamp over the more extensively used RCD clamp, third winding and resonant reset techniques. This paper presents how to effectively to apply various active clamp circuits like positive clamp, negative clamp or combination of both positive and negative clamp for most favorable circuit performance. This paper summarizes a comparative analysis on various active clamping circuits for forward converter.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"1 1","pages":"839-841"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76019439","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 : 2017-11-01DOI: 10.1109/ICRERA.2017.8191165
A. Rodríguez-Cabero, J. Roldán-Pérez, M. Prodanović
The high penetration of renewable energy sources in electrical distribution networks is giving rise to new challenges in the low voltage network operation. Power electronics converters are widely used to connect these energy resources to the grid, and the control technique that emulates the operation of synchronous generators is attracting the attention of researchers in recent years. Such converters are referred to as synchronverters and they have been recently studied in the literature. This paper presents the modelling and analysis of a battery-supported synchronverter connected to the grid. Each dynamic element of the system is modelled in detail and all of them are then joined together forming a state-space model. The eigenvalue analysis was then used to evaluate the synchronverter robustness against variations in the grid inductance and resistance. The theoretical developments were validated experimentally on a 15 kVA prototype of a synchronverter connected to the grid. The small signal modelling procedure showed to be an accurate approach to represent synchronverters dynamics.
{"title":"Synchronverter small-signal modelling and eigenvalue analysis for battery systems integration","authors":"A. Rodríguez-Cabero, J. Roldán-Pérez, M. Prodanović","doi":"10.1109/ICRERA.2017.8191165","DOIUrl":"https://doi.org/10.1109/ICRERA.2017.8191165","url":null,"abstract":"The high penetration of renewable energy sources in electrical distribution networks is giving rise to new challenges in the low voltage network operation. Power electronics converters are widely used to connect these energy resources to the grid, and the control technique that emulates the operation of synchronous generators is attracting the attention of researchers in recent years. Such converters are referred to as synchronverters and they have been recently studied in the literature. This paper presents the modelling and analysis of a battery-supported synchronverter connected to the grid. Each dynamic element of the system is modelled in detail and all of them are then joined together forming a state-space model. The eigenvalue analysis was then used to evaluate the synchronverter robustness against variations in the grid inductance and resistance. The theoretical developments were validated experimentally on a 15 kVA prototype of a synchronverter connected to the grid. The small signal modelling procedure showed to be an accurate approach to represent synchronverters dynamics.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"210 1","pages":"780-784"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76134443","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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