Pub Date : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052757
S. K. Sahoo, S. Mondal, D. Kastha, A. Sinha, N. Kishore
In recent years, there has been significant growth in wind energy based power generation. This has encouraged research on the various aspects and effect of the installation of wind power plants. Wind turbine emulators (WTE) are being employed in research laboratories as they reproduce the torque developed by a wind turbine at a given wind speed. Commonly, DC motors or induction motors are employed for wind turbine emulation. However, DC motors require frequent maintenance, are expensive and bulky. With better controllability and lesser maintenance costs, doubly fed induction motor (DFIM) can be useful for wind turbine emulation. This paper presents modeling and control of DFIM as a WTE in MATLAB/SIMULINK environment. Further, a start-up sequence using direct torque control (DTC) is proposed for the DFIM.
{"title":"Wind turbine emulation using doubly fed induction motor","authors":"S. K. Sahoo, S. Mondal, D. Kastha, A. Sinha, N. Kishore","doi":"10.1109/ICTFCEN.2016.8052757","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052757","url":null,"abstract":"In recent years, there has been significant growth in wind energy based power generation. This has encouraged research on the various aspects and effect of the installation of wind power plants. Wind turbine emulators (WTE) are being employed in research laboratories as they reproduce the torque developed by a wind turbine at a given wind speed. Commonly, DC motors or induction motors are employed for wind turbine emulation. However, DC motors require frequent maintenance, are expensive and bulky. With better controllability and lesser maintenance costs, doubly fed induction motor (DFIM) can be useful for wind turbine emulation. This paper presents modeling and control of DFIM as a WTE in MATLAB/SIMULINK environment. Further, a start-up sequence using direct torque control (DTC) is proposed for the DFIM.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131129191","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052708
M. Chakkarapani, R. G. Praanesh, R. Raghav, G. S. Ilango, C. Nagamani
The ultimate aim of any Maximum Power Point Tracking (MPPT) algorithm for a photovoltaic (PV) system is to ensure that the maximum possible power is available to the load at all times, irrespective of the environmental conditions. To this end, several conventional and non-conventional MPPT algorithms have been proposed in literature. However, these algorithms neglect the effect of the converter design, dynamics and the value of load on the system. This paper investigates the effect of the dynamics and the non-idealities of the power electronic converter that is used for MPPT implementation on the performance of the MPPT algorithm. Based on the experimental results, design considerations for effective MPPT implementation are presented.
{"title":"On the issues in MPPT implentation for PV systems","authors":"M. Chakkarapani, R. G. Praanesh, R. Raghav, G. S. Ilango, C. Nagamani","doi":"10.1109/ICTFCEN.2016.8052708","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052708","url":null,"abstract":"The ultimate aim of any Maximum Power Point Tracking (MPPT) algorithm for a photovoltaic (PV) system is to ensure that the maximum possible power is available to the load at all times, irrespective of the environmental conditions. To this end, several conventional and non-conventional MPPT algorithms have been proposed in literature. However, these algorithms neglect the effect of the converter design, dynamics and the value of load on the system. This paper investigates the effect of the dynamics and the non-idealities of the power electronic converter that is used for MPPT implementation on the performance of the MPPT algorithm. Based on the experimental results, design considerations for effective MPPT implementation are presented.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123489697","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052741
A. Dhar, D. Pradhan, J. Roy
As the demand of time is cost reduction of solar photovoltaic power generation by reducing the active material usage, the unique micro-nanostructure geometry reported can effectively achieve this goal by reducing approximately 50% material usage. Analysis and optimization of the nanostructured geometry is presented in this work. The results are also compared with conventional textured silicon solar cell. It has been found that the reflection reduces significantly with the use of optimized nanostructured geometry. The challenge of trapping light within ultra-thin silicon solar cell has been addressed effectively by the implementation of optimized micro-nanostructured geometry. Simulations are done on both wave optics and ray optics module of comsol multiphysics to optically optimize the nanostructured geometry. It is expected that this micro-nanostructured silicon solar cell can achieve the Shockley-Queiesser limit within an ultra-thin absorber and thus will be able to reduce the material usage leading to low cost power conversion of solar photovoltaic technology.
{"title":"Nanostructures for highly efficient ultra-thin silicon solar cells","authors":"A. Dhar, D. Pradhan, J. Roy","doi":"10.1109/ICTFCEN.2016.8052741","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052741","url":null,"abstract":"As the demand of time is cost reduction of solar photovoltaic power generation by reducing the active material usage, the unique micro-nanostructure geometry reported can effectively achieve this goal by reducing approximately 50% material usage. Analysis and optimization of the nanostructured geometry is presented in this work. The results are also compared with conventional textured silicon solar cell. It has been found that the reflection reduces significantly with the use of optimized nanostructured geometry. The challenge of trapping light within ultra-thin silicon solar cell has been addressed effectively by the implementation of optimized micro-nanostructured geometry. Simulations are done on both wave optics and ray optics module of comsol multiphysics to optically optimize the nanostructured geometry. It is expected that this micro-nanostructured silicon solar cell can achieve the Shockley-Queiesser limit within an ultra-thin absorber and thus will be able to reduce the material usage leading to low cost power conversion of solar photovoltaic technology.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129928590","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052754
S. Sinha, A. Sinha, P. Bajpai
Hybrid storage devices are used in microgrids to provide power backup solutions when the distributed energy resources (DERs) are unable to supply the load demands. Combination of battery and supercapacitor (SC) banks provide an appropriate hybrid storage solution. The objective of this paper is to present a comparative study of charging and discharging process of both battery and SC banks and hence understand their application areas in a DC microgrid. Also the rate of charge-discharge and its control to prevent over charging or under-discharging of the storage devices is presented here.
{"title":"Analysis of hybrid storage system in DC microgrid","authors":"S. Sinha, A. Sinha, P. Bajpai","doi":"10.1109/ICTFCEN.2016.8052754","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052754","url":null,"abstract":"Hybrid storage devices are used in microgrids to provide power backup solutions when the distributed energy resources (DERs) are unable to supply the load demands. Combination of battery and supercapacitor (SC) banks provide an appropriate hybrid storage solution. The objective of this paper is to present a comparative study of charging and discharging process of both battery and SC banks and hence understand their application areas in a DC microgrid. Also the rate of charge-discharge and its control to prevent over charging or under-discharging of the storage devices is presented here.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123722523","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052723
Sujit Kumar, V. Dave
The hasty augmentation in PV cells technology made the installation and utilization of solar power very trouble-free. The solar cells fabricated by semiconductors, has reduced the efficiency of PV systems to 15–20%. Further, the performance of solar panel is still reduced by the accumulation of dust known as soiling. This paper introduces a technique of cleaning a solar panel using control model of automatic windshield wiper based on Levenberg — Marquardt (LM) neural network. A network model of pattern recognition based on LM algorithm is trained and tested with specialist's information data. The result showed that this model based on LM neural network is effectual to grip doubts and nonlinearities of the automatic windshield wiper system, without using mathematical model. The accuracy of developed ANN model to predict the accumulated dust over the panel was found to be 99%.
{"title":"ANN based controller to mitigate soiling loss on solar panels","authors":"Sujit Kumar, V. Dave","doi":"10.1109/ICTFCEN.2016.8052723","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052723","url":null,"abstract":"The hasty augmentation in PV cells technology made the installation and utilization of solar power very trouble-free. The solar cells fabricated by semiconductors, has reduced the efficiency of PV systems to 15–20%. Further, the performance of solar panel is still reduced by the accumulation of dust known as soiling. This paper introduces a technique of cleaning a solar panel using control model of automatic windshield wiper based on Levenberg — Marquardt (LM) neural network. A network model of pattern recognition based on LM algorithm is trained and tested with specialist's information data. The result showed that this model based on LM neural network is effectual to grip doubts and nonlinearities of the automatic windshield wiper system, without using mathematical model. The accuracy of developed ANN model to predict the accumulated dust over the panel was found to be 99%.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116631743","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052711
Abhinav Sinha, A. Shukla, R. Prasad
Now-a-days concentrated solar power plant (CSPP) is generally used for grid based power generation unit, i.e., for large scale power generation. A centralise tower consisting of heat transfer fluid which circulates throughout the plant. There are so many different kinds of heat transfer fluids (HTFs), each have different thermal and physical properties. In order to fulfil the energy requirements in rural areas, CSPP can be viewed as an alternative source for power generation ranging 10kW up to 1–2MW production capacity. Today, number of CSPP has already been installed at different locations along with large power capacities. These installed CSPP uses different types of HTF such as, therminol VP-1 synthetic oil, dowtherm A, etc As per govt. of India's central electrical authority report 2016, India produces 61% of electricity from coal which may depleted soon. But still India is unable to fulfill energy demand all over the country with non renewable energy sources. So they need some alternate sources of energy to bridging the gap between the demand and supply. In this paper we are reviewing the various properties of each heat transfer fluid with reference to CSPP in India. Then suggesting to utilize halide based salt in these plants for small scale power generations in rural areas and utilizing phase change material for two purpose, first to be working as a heat transfer fluid and second is to be using as heat storage material. This article also explains that how the solar radiations are concentrated to a solar power tower with the help of heliostats specifically for small capacity power generation unit, and thus to install small capacities solar power tower within the Indian smart cities with the help of different heat transfer fluids.
{"title":"A review on CSP technologies with heat transfer fluids used in Indian power plants","authors":"Abhinav Sinha, A. Shukla, R. Prasad","doi":"10.1109/ICTFCEN.2016.8052711","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052711","url":null,"abstract":"Now-a-days concentrated solar power plant (CSPP) is generally used for grid based power generation unit, i.e., for large scale power generation. A centralise tower consisting of heat transfer fluid which circulates throughout the plant. There are so many different kinds of heat transfer fluids (HTFs), each have different thermal and physical properties. In order to fulfil the energy requirements in rural areas, CSPP can be viewed as an alternative source for power generation ranging 10kW up to 1–2MW production capacity. Today, number of CSPP has already been installed at different locations along with large power capacities. These installed CSPP uses different types of HTF such as, therminol VP-1 synthetic oil, dowtherm A, etc As per govt. of India's central electrical authority report 2016, India produces 61% of electricity from coal which may depleted soon. But still India is unable to fulfill energy demand all over the country with non renewable energy sources. So they need some alternate sources of energy to bridging the gap between the demand and supply. In this paper we are reviewing the various properties of each heat transfer fluid with reference to CSPP in India. Then suggesting to utilize halide based salt in these plants for small scale power generations in rural areas and utilizing phase change material for two purpose, first to be working as a heat transfer fluid and second is to be using as heat storage material. This article also explains that how the solar radiations are concentrated to a solar power tower with the help of heliostats specifically for small capacity power generation unit, and thus to install small capacities solar power tower within the Indian smart cities with the help of different heat transfer fluids.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128870037","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052719
G. Ahmad, Sourav Mandal, T. K. Bhattacharya, J. Roy
Thinning down the active absorber layer is the current trend in solar cell technology. The thinner absorber layer has two main advantages (i) it reduces the material consumption and (ii) minimizes the time and energy required in production. For thin film silicon (Si) technology, thinning down the absorber layer is of particular interest since the device throughputs of vacuum deposition systems as well as the stability of the devices are significantly enhanced. The 3D nanorod structure in thin-film photovoltaics has got much attention due to their enhanced light trapping capability, and it also requires less thick active layer. The enhanced light trapping results in more efficient absorption of spectrum within the solar cell structure. This gives the higher short circuit current and hence higher power conversion efficiency. We have developed the ZnO nanorods on the glass substrate through galvanic cell based approach and designed a nanorod solar cell through numerical simulations using technology computer aided design (TCAD) tool. Numerical simulation shows that the highest conversion efficiency of 9.12% is obtained for the zinc oxide nanorod solar cell which is nearly 18.59% more than the planar a-Si:H solar cell with same absorber layer thickness.
{"title":"A simulation study of p-i-n amorphous silicon photovoltaic cell using ZnO nano rods","authors":"G. Ahmad, Sourav Mandal, T. K. Bhattacharya, J. Roy","doi":"10.1109/ICTFCEN.2016.8052719","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052719","url":null,"abstract":"Thinning down the active absorber layer is the current trend in solar cell technology. The thinner absorber layer has two main advantages (i) it reduces the material consumption and (ii) minimizes the time and energy required in production. For thin film silicon (Si) technology, thinning down the absorber layer is of particular interest since the device throughputs of vacuum deposition systems as well as the stability of the devices are significantly enhanced. The 3D nanorod structure in thin-film photovoltaics has got much attention due to their enhanced light trapping capability, and it also requires less thick active layer. The enhanced light trapping results in more efficient absorption of spectrum within the solar cell structure. This gives the higher short circuit current and hence higher power conversion efficiency. We have developed the ZnO nanorods on the glass substrate through galvanic cell based approach and designed a nanorod solar cell through numerical simulations using technology computer aided design (TCAD) tool. Numerical simulation shows that the highest conversion efficiency of 9.12% is obtained for the zinc oxide nanorod solar cell which is nearly 18.59% more than the planar a-Si:H solar cell with same absorber layer thickness.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124919090","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052705
J. B. Sangiri, Sudipto Ghosh, C. Chakraborty
Lithium-ion batteries are most preferable energy storage devices for its higher energy density, flexible form factor and light weight design than comparable battery technologies. Considerations of thermal effects in Lithium-ion cells (related to cycle and calendar life) are important for the safety issues because higher temperature may leads to the thermal runaway. Electro-thermal modeling enables us to understand the thermal behaviour of cells, quantification of heat generation inside the cell and changes in cell chemistry at the time of battery operation. The various electro-thermal models of Lithium-ion cells have been investigated using methods like control volume, finite elementary, differential method. Substantial diagnostic and practical modeling efforts are required to fully understand the thermal and electrical characteristics of the Lithium-ion cells across various operating conditions for higher discharge rate. Higher discharge rate (approximately 10C) is preferred for some particular application like Torpedo, underwater vehicles etc. Several factors associated with cell fabrications, such as electrode thickness, compactness, electronic conductivity etc, need to be optimized to achieve better cell performance at higher discharge rate. Thermal behaviour of the cell at high discharge rate is another important issue that must be address properly to mitigate safety related concerns.
{"title":"Electro-thermal modeling of Lithium-ion cell for higher discharge rate applications","authors":"J. B. Sangiri, Sudipto Ghosh, C. Chakraborty","doi":"10.1109/ICTFCEN.2016.8052705","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052705","url":null,"abstract":"Lithium-ion batteries are most preferable energy storage devices for its higher energy density, flexible form factor and light weight design than comparable battery technologies. Considerations of thermal effects in Lithium-ion cells (related to cycle and calendar life) are important for the safety issues because higher temperature may leads to the thermal runaway. Electro-thermal modeling enables us to understand the thermal behaviour of cells, quantification of heat generation inside the cell and changes in cell chemistry at the time of battery operation. The various electro-thermal models of Lithium-ion cells have been investigated using methods like control volume, finite elementary, differential method. Substantial diagnostic and practical modeling efforts are required to fully understand the thermal and electrical characteristics of the Lithium-ion cells across various operating conditions for higher discharge rate. Higher discharge rate (approximately 10C) is preferred for some particular application like Torpedo, underwater vehicles etc. Several factors associated with cell fabrications, such as electrode thickness, compactness, electronic conductivity etc, need to be optimized to achieve better cell performance at higher discharge rate. Thermal behaviour of the cell at high discharge rate is another important issue that must be address properly to mitigate safety related concerns.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121619081","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052720
T. Datta, A. Sinha, P. Bajpai
Wind power has evolved as a primary source of sustainable energy for bulk generation as well as small scale units. Power distribution systems with wind generation units like Doubly Fed Induction Generator (DFIG) are bound by the standards like IEEE 1547 to detect formation of power islands and disconnect the DFIG from the system. This approach is not an economically viable option as the DFIG system with appropriate control may successfully continue to supply power to the local loads and hence operate as an islanded Microgrid. However, this decreases the time frame within which islanding detection relays (IDR) must operate. This paper presents a comparative study of advanced techniques based on the principle of a classic Rate of Change of Frequency (ROCOF) relay that has been proposed in recent research works for utilization in distribution systems with DFIG. This work evaluates these IDRs in terms of their operating characteristics. Simulations have been carried out in PSCAD to obtain the operating curves and to assess the vulnerability of these IDRs to non-islanding transient. The effect of these techniques on power quality is also highlighted.
{"title":"Analysis of modified ROCOF relays for islanding detection of distribution systems with DFIG","authors":"T. Datta, A. Sinha, P. Bajpai","doi":"10.1109/ICTFCEN.2016.8052720","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052720","url":null,"abstract":"Wind power has evolved as a primary source of sustainable energy for bulk generation as well as small scale units. Power distribution systems with wind generation units like Doubly Fed Induction Generator (DFIG) are bound by the standards like IEEE 1547 to detect formation of power islands and disconnect the DFIG from the system. This approach is not an economically viable option as the DFIG system with appropriate control may successfully continue to supply power to the local loads and hence operate as an islanded Microgrid. However, this decreases the time frame within which islanding detection relays (IDR) must operate. This paper presents a comparative study of advanced techniques based on the principle of a classic Rate of Change of Frequency (ROCOF) relay that has been proposed in recent research works for utilization in distribution systems with DFIG. This work evaluates these IDRs in terms of their operating characteristics. Simulations have been carried out in PSCAD to obtain the operating curves and to assess the vulnerability of these IDRs to non-islanding transient. The effect of these techniques on power quality is also highlighted.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123009535","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 : 2016-11-01DOI: 10.1109/ICTFCEN.2016.8052738
Suparna Das, K. Dutta, P. P. Kundu
Bimetallic Ni-Ag alloy nanostructures with different ratios of Ni and Ag, prepared through a simple co-reduction process from the respective precursor metal salts, were employed as the electrocatalysts toward methanol oxidation reaction in acidic electrolyte. The previously reported superior catalytic performance exhibited by deposited Ni catalyst on sulfonated polypyrrole (SPPy) matrix is encouraging enough to further utilize SPPy as a support matrix and Ni as a primary metal catalyst. In this work, the activity of the synthesized Ni based catalyst was strongly dependent on the composition of the Ni-Ag/SPPy catalyst systems. The best performance was obtained upon utilizing a Ni:Ag ratio of 80:20. For example, this Ni-Ag (80:20)/SPPy catalyst system exhibited a higher area specific current density, a stable current density, a higher IF/IB ratio and a better single cell DMFC performance in acidic electrolyte, than that of the other prepared catalyst systems, and also, the state-of-the-art Pt-Ru on C.
以各自的前驱金属盐为原料，采用简单共还原法制备了不同镍银比例的双金属Ni-Ag合金纳米结构，作为酸性电解液中甲醇氧化反应的电催化剂。先前报道的沉积镍催化剂在磺化聚吡咯(SPPy)基体上表现出优异的催化性能，足以鼓舞人们进一步利用SPPy作为载体基质，Ni作为原生金属催化剂。在这项工作中，合成的Ni基催化剂的活性强烈依赖于Ni- ag /SPPy催化剂体系的组成。当Ni:Ag比为80:20时，获得了最佳性能。例如，该Ni-Ag (80:20)/SPPy催化剂体系在酸性电解液中表现出更高的面积比电流密度、稳定的电流密度、更高的IF/IB比和更好的单电池DMFC性能，比其他制备的催化剂体系以及最先进的Pt-Ru on C。
{"title":"Electrocatalytic potential of sulfonated polypyrrole-supported Ni-Ag towards methanol oxidation in acidic medium","authors":"Suparna Das, K. Dutta, P. P. Kundu","doi":"10.1109/ICTFCEN.2016.8052738","DOIUrl":"https://doi.org/10.1109/ICTFCEN.2016.8052738","url":null,"abstract":"Bimetallic Ni-Ag alloy nanostructures with different ratios of Ni and Ag, prepared through a simple co-reduction process from the respective precursor metal salts, were employed as the electrocatalysts toward methanol oxidation reaction in acidic electrolyte. The previously reported superior catalytic performance exhibited by deposited Ni catalyst on sulfonated polypyrrole (SPPy) matrix is encouraging enough to further utilize SPPy as a support matrix and Ni as a primary metal catalyst. In this work, the activity of the synthesized Ni based catalyst was strongly dependent on the composition of the Ni-Ag/SPPy catalyst systems. The best performance was obtained upon utilizing a Ni:Ag ratio of 80:20. For example, this Ni-Ag (80:20)/SPPy catalyst system exhibited a higher area specific current density, a stable current density, a higher IF/IB ratio and a better single cell DMFC performance in acidic electrolyte, than that of the other prepared catalyst systems, and also, the state-of-the-art Pt-Ru on C.","PeriodicalId":339848,"journal":{"name":"2016 21st Century Energy Needs - Materials, Systems and Applications (ICTFCEN)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131826258","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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