Pub Date : 2015-11-09DOI: 10.1109/ICGET.2015.7315083
M. Ahmed, M. S. Parvez, M. Hossain, Arup Kumar Pal, H. Hassan, M. Iqbal
A smart grid is an electricity network based on digital technology that is used to supply electricity to consumers via two-way digital communication. This system allows for monitoring, analysis, control and communication within the supply chain to help improve efficiency, reduce the energy consumption and cost, and maximize the transparency and reliability of the energy supply chain. The term “smart grid” is not familiar to Bangladesh. It will be good if it can be implemented in Bangladesh because of having load-shedding problem. The power system of Bangladesh is very complex and antique. If we want to reduce the complexity and eliminate load-shedding problem, there is no better way without smart grid. The regular grid system can easily be replaced by “smart grid”. The main theme of this paper is to implement smart grid in Bangladesh and to integrate renewable (mainly solar energy) energy with it to increase production of power and eliminate power shortage in Bangladesh.
{"title":"Minimization of power shortage by using renewable (solar) energy through smart grid, perspective: Bangladesh","authors":"M. Ahmed, M. S. Parvez, M. Hossain, Arup Kumar Pal, H. Hassan, M. Iqbal","doi":"10.1109/ICGET.2015.7315083","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315083","url":null,"abstract":"A smart grid is an electricity network based on digital technology that is used to supply electricity to consumers via two-way digital communication. This system allows for monitoring, analysis, control and communication within the supply chain to help improve efficiency, reduce the energy consumption and cost, and maximize the transparency and reliability of the energy supply chain. The term “smart grid” is not familiar to Bangladesh. It will be good if it can be implemented in Bangladesh because of having load-shedding problem. The power system of Bangladesh is very complex and antique. If we want to reduce the complexity and eliminate load-shedding problem, there is no better way without smart grid. The regular grid system can easily be replaced by “smart grid”. The main theme of this paper is to implement smart grid in Bangladesh and to integrate renewable (mainly solar energy) energy with it to increase production of power and eliminate power shortage in Bangladesh.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126157657","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315094
Abu Shama Mohammad Miraz, M. S. Faruk, Muhammad Asad Rahman
Cu2ZnSnS4 (CZTS) absorber layer has recently been put under extensive research as a potential replacement of CIGS absorber layer because of its excellent electrical and optical properties. In this work, CdS, ZnS, ZnSe, In2S3 and TiO2 have been used as buffer layers in a CZTS/Buffer/i-ZnO structure. The use of i-ZnO as a Transparent Conducting Oxide (TCO) layer has been seen to enhance the performance of an ideal CZTS absorber layer without deep level defects. The effects of deep level defects on the performance of the cells have been numerically analyzed in terms of the energetic distribution and capture cross-section parameters. CZTS/In2S3/i-ZnO structure showed the best efficiency of 11.68% (with VOC = 0.77V, JSC = 26.66 mA/cm2 and Fill Factor = 56.96%). A variation of impurity concentrations have been used to offset the deterioration of efficiency and an optimum acceptor concentration of 2×1016 cm-3 was found for the enhancement of lower performance caused by electron and hole capture cross section parameters. The efficiency of the CZTS/In2S3/i-ZnO structure improved up to 14.56%. Furthermore, layer thickness has also been investigated as a potential way of compensating the effects of deep level defects. Finally, temperature dependence of various structures has been observed.
{"title":"Numerical analysis of deep level defects in Cu2ZnSnS4 (CZTS) thin film solar cells","authors":"Abu Shama Mohammad Miraz, M. S. Faruk, Muhammad Asad Rahman","doi":"10.1109/ICGET.2015.7315094","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315094","url":null,"abstract":"Cu<sub>2</sub>ZnSnS<sub>4</sub> (CZTS) absorber layer has recently been put under extensive research as a potential replacement of CIGS absorber layer because of its excellent electrical and optical properties. In this work, CdS, ZnS, ZnSe, In<sub>2</sub>S<sub>3</sub> and TiO<sub>2</sub> have been used as buffer layers in a CZTS/Buffer/i-ZnO structure. The use of i-ZnO as a Transparent Conducting Oxide (TCO) layer has been seen to enhance the performance of an ideal CZTS absorber layer without deep level defects. The effects of deep level defects on the performance of the cells have been numerically analyzed in terms of the energetic distribution and capture cross-section parameters. CZTS/In<sub>2</sub>S<sub>3</sub>/i-ZnO structure showed the best efficiency of 11.68% (with V<sub>OC</sub> = 0.77V, J<sub>SC</sub> = 26.66 mA/cm<sup>2</sup> and Fill Factor = 56.96%). A variation of impurity concentrations have been used to offset the deterioration of efficiency and an optimum acceptor concentration of 2×1016 cm<sup>-3</sup> was found for the enhancement of lower performance caused by electron and hole capture cross section parameters. The efficiency of the CZTS/In<sub>2</sub>S<sub>3</sub>/i-ZnO structure improved up to 14.56%. Furthermore, layer thickness has also been investigated as a potential way of compensating the effects of deep level defects. Finally, temperature dependence of various structures has been observed.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126460214","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315105
Kazi Mohammad Arfatul Islam, Md Mizanur Rahman, Tabassum Mekhola Khan, Mohammed Saifuddin Munna
This paper emphasis on hybridization of Solar PV and biogas power plant which is designed to run simultaneously with the help of Programmable Logic Controller (PLC). Bangladesh is affluent in almost all these resources especially in Biogas Energy and Solar Energy. Solar Panels along with biogas plant can be used to produce power in different areas of this country. The electrical energy can be extracted from solar energy directly by means of Photovoltaic cells. On the other hand biogas energy is first converted to heat energy through biogas engine and this heat energy in turn is used to drive a turbine to get the electrical energy. From the simulation result, which done in MATlab simulink Authors observed that the efficiency of proposed hybrid plant is higher in proposed hybrid Solar PV and biogas power plant rather than the summation the of efficiency of individual power plant. In the hybrid system energy has a higher reliability, can be cost effective.. The research work demonstrates how these schemes can be combined together to achieve the desired goal. It shows that how we can get continues power from a hybrid power plant, where the solar PV will run for eight (8) hours in a day and biogas plant will run for rest sixteen (16) hours.
{"title":"Design and performance analysis of a hybrid Solar PV and biogas power plant using PLC","authors":"Kazi Mohammad Arfatul Islam, Md Mizanur Rahman, Tabassum Mekhola Khan, Mohammed Saifuddin Munna","doi":"10.1109/ICGET.2015.7315105","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315105","url":null,"abstract":"This paper emphasis on hybridization of Solar PV and biogas power plant which is designed to run simultaneously with the help of Programmable Logic Controller (PLC). Bangladesh is affluent in almost all these resources especially in Biogas Energy and Solar Energy. Solar Panels along with biogas plant can be used to produce power in different areas of this country. The electrical energy can be extracted from solar energy directly by means of Photovoltaic cells. On the other hand biogas energy is first converted to heat energy through biogas engine and this heat energy in turn is used to drive a turbine to get the electrical energy. From the simulation result, which done in MATlab simulink Authors observed that the efficiency of proposed hybrid plant is higher in proposed hybrid Solar PV and biogas power plant rather than the summation the of efficiency of individual power plant. In the hybrid system energy has a higher reliability, can be cost effective.. The research work demonstrates how these schemes can be combined together to achieve the desired goal. It shows that how we can get continues power from a hybrid power plant, where the solar PV will run for eight (8) hours in a day and biogas plant will run for rest sixteen (16) hours.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122956770","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315103
Muhammad Sifatul Alam Chowdhury, Al Mahmudur Rahman, N. Samrat
To ensure the safety of environment a major challenge to the vehicle manufacturer is the emission rate of vehicle. Emission of environment polluting particles especially CO2 from conventional vehicles is a direct threat to the environment. As global vehicle market are expanding day by day so this high rate of emission is already a nightmare to the environment specialist. That's why some of green technologies are introduced in the vehicle by which energy reuse can be happened in the vehicle. Which can impressively reduce the emission of polluting particles from the vehicle. The impressive add-ons among this technologies are fuel cell which can reduce the rate of environment pollution near zero level. Research are going on full swing on the other green technologies like the addition solar cell in the vehicle. Due to some limitations this awaited technology is yet to reach the remote people. Recovering exhaust heat and vibration energy can be a good source of energy in the vehicle. In this paper technologies invented in various time, used in the vehicle for a greener world like regenerative breaking system, fuel cell, energy harvesting from vibration, recovering exhaust heat and the use of photovoltaic panel in vehicle are briefly discussed. Beside this the business perspective of this technologies and cost of producing power from them are discussed.
{"title":"A comprehensive study on green technologies used in the vehicle","authors":"Muhammad Sifatul Alam Chowdhury, Al Mahmudur Rahman, N. Samrat","doi":"10.1109/ICGET.2015.7315103","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315103","url":null,"abstract":"To ensure the safety of environment a major challenge to the vehicle manufacturer is the emission rate of vehicle. Emission of environment polluting particles especially CO2 from conventional vehicles is a direct threat to the environment. As global vehicle market are expanding day by day so this high rate of emission is already a nightmare to the environment specialist. That's why some of green technologies are introduced in the vehicle by which energy reuse can be happened in the vehicle. Which can impressively reduce the emission of polluting particles from the vehicle. The impressive add-ons among this technologies are fuel cell which can reduce the rate of environment pollution near zero level. Research are going on full swing on the other green technologies like the addition solar cell in the vehicle. Due to some limitations this awaited technology is yet to reach the remote people. Recovering exhaust heat and vibration energy can be a good source of energy in the vehicle. In this paper technologies invented in various time, used in the vehicle for a greener world like regenerative breaking system, fuel cell, energy harvesting from vibration, recovering exhaust heat and the use of photovoltaic panel in vehicle are briefly discussed. Beside this the business perspective of this technologies and cost of producing power from them are discussed.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117341045","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315087
K. Khan, M. Ahmed, M. S. Parvez, M. Hossain
Bangladesh is facing a lot of drawbacks to acquire sustainable development owing to lack of electricity. Now a days the demand of power is increasing day by day in Bangladesh. Now Bangladesh needs a reliable green energy source to meet the demand. To improve the power crisis in our country geothermal energy can be a vital & useful alternative. Bangladesh is one of the largest deltas and having a large sedimentary basin. It has many abandoned gas wells (temperature: more than 100°C in the depth of 3 km to 4 km). The main theme of this paper is to discuss about geothermal energy and its prospects in Bangladesh.
{"title":"Scope of geothermal potential of Bangladesh: A review","authors":"K. Khan, M. Ahmed, M. S. Parvez, M. Hossain","doi":"10.1109/ICGET.2015.7315087","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315087","url":null,"abstract":"Bangladesh is facing a lot of drawbacks to acquire sustainable development owing to lack of electricity. Now a days the demand of power is increasing day by day in Bangladesh. Now Bangladesh needs a reliable green energy source to meet the demand. To improve the power crisis in our country geothermal energy can be a vital & useful alternative. Bangladesh is one of the largest deltas and having a large sedimentary basin. It has many abandoned gas wells (temperature: more than 100°C in the depth of 3 km to 4 km). The main theme of this paper is to discuss about geothermal energy and its prospects in Bangladesh.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132370434","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315082
M. Ahmed, M. S. Parvez, M. Hossain, Md. Maksudur Rahman
In this era of globalization to keep pace with the world Bangladesh is also going forward, but the people of rural areas being deprived from modern facilities & our country's economy is falling apart. For development of rural place of Bangladesh electrical power is necessary. Scientists are working desperately to power up the whole rural areas. Energy generation from biomass will be revolutionary system to power up rural areas of Bangladesh like Sailchapra. In every season about thousands tons of straw and two hundred tons of husk are produced from paddy in Sailchapra, which is a good source of biomass fuel. The Sailchapra can generate a large amount of electric power by gasification of this biomass fuel. The aim of this paper is to power up Sailchapra by implementing a biomass power plant.
{"title":"Simulation of standalone 80kW biomass fueled power plant in Sailchapra, Bangladesh","authors":"M. Ahmed, M. S. Parvez, M. Hossain, Md. Maksudur Rahman","doi":"10.1109/ICGET.2015.7315082","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315082","url":null,"abstract":"In this era of globalization to keep pace with the world Bangladesh is also going forward, but the people of rural areas being deprived from modern facilities & our country's economy is falling apart. For development of rural place of Bangladesh electrical power is necessary. Scientists are working desperately to power up the whole rural areas. Energy generation from biomass will be revolutionary system to power up rural areas of Bangladesh like Sailchapra. In every season about thousands tons of straw and two hundred tons of husk are produced from paddy in Sailchapra, which is a good source of biomass fuel. The Sailchapra can generate a large amount of electric power by gasification of this biomass fuel. The aim of this paper is to power up Sailchapra by implementing a biomass power plant.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114884615","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315092
S. Bhadra, A. K. M. Tanbir Sazid, M. Esraz-Ul-Zannat
Walking acts as an authentic link for intermodal transfer in major activity centers and helps to fulfil recreational and utilitarian trips in a city. To assess the condition and pattern of walking, walkability assessment is the primary option. In the last decade a large number of literatures in urban planning, public health and transportation have analyzed the role of the built environment on physical activity, typically walking. This study is the first approach of measuring neighborhood walkability for Khulna City which is the third largest city in Bangladesh. Different spatial analyses have been carried out to objectively assess walkability score for all 31 wards of Khulna City Corporation area using Geographic Information System (GIS). Final result shows the ranking of each ward based on their respective scores. The standard method of walkability measurement provided by IPEN (International Pedestrian Environment Network) has been followed in this study. Net residential density, net intersection density, land use mix and net retail floor area are selected as built environmental criteria. The result indicates that ward no 11 shows the highest standardized walkability score, where the lowest score was found for ward no 4. It was also found that 19.27% people live in high walkable area and 39.48% people live in low walkable area of the city. Outputs of the research will be very helpful for the decision makers, city managers etc. who are dealing with the development and environment of a city and finally the researcher to do research further on the given subject.
{"title":"An objective assessment of walkability in Khulna City: A GIS based approach","authors":"S. Bhadra, A. K. M. Tanbir Sazid, M. Esraz-Ul-Zannat","doi":"10.1109/ICGET.2015.7315092","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315092","url":null,"abstract":"Walking acts as an authentic link for intermodal transfer in major activity centers and helps to fulfil recreational and utilitarian trips in a city. To assess the condition and pattern of walking, walkability assessment is the primary option. In the last decade a large number of literatures in urban planning, public health and transportation have analyzed the role of the built environment on physical activity, typically walking. This study is the first approach of measuring neighborhood walkability for Khulna City which is the third largest city in Bangladesh. Different spatial analyses have been carried out to objectively assess walkability score for all 31 wards of Khulna City Corporation area using Geographic Information System (GIS). Final result shows the ranking of each ward based on their respective scores. The standard method of walkability measurement provided by IPEN (International Pedestrian Environment Network) has been followed in this study. Net residential density, net intersection density, land use mix and net retail floor area are selected as built environmental criteria. The result indicates that ward no 11 shows the highest standardized walkability score, where the lowest score was found for ward no 4. It was also found that 19.27% people live in high walkable area and 39.48% people live in low walkable area of the city. Outputs of the research will be very helpful for the decision makers, city managers etc. who are dealing with the development and environment of a city and finally the researcher to do research further on the given subject.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114950662","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315080
Masuma Akter Rumi, Asaduzzaman, D. M. Hasibul Hasan
Despite the growing popularity of smartphones, it's extensive power consumption is still now a burning issue. In this regard, we propose and evaluate a system of CPU power consumption reduction which supports Dynamic Voltage and Frequency Scaling (DVFS) and User Driven Frequency Scaling (UDFS) at the same time. At first, a DVFS is used to scale the frequency level continuously based on loads present at that time. Then a UDFS is used to consider user satisfaction. Starting from the highest frequency level, UDFS gradually reduces the frequency level until users feel discomfort. The proposed technique calculates an optimum frequency as the starting frequency and then reduces that frequency until user shows discomfort. When CPU reaches in ideal state, processor frequency goes to the lowest level to save battery life. Our proposed technique is implemented in Samsung Galaxy S2 and it reduces 25% power consumption compared to default DVFS and 3% than existing UDFS technique.
{"title":"CPU power consumption reduction in android smartphone","authors":"Masuma Akter Rumi, Asaduzzaman, D. M. Hasibul Hasan","doi":"10.1109/ICGET.2015.7315080","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315080","url":null,"abstract":"Despite the growing popularity of smartphones, it's extensive power consumption is still now a burning issue. In this regard, we propose and evaluate a system of CPU power consumption reduction which supports Dynamic Voltage and Frequency Scaling (DVFS) and User Driven Frequency Scaling (UDFS) at the same time. At first, a DVFS is used to scale the frequency level continuously based on loads present at that time. Then a UDFS is used to consider user satisfaction. Starting from the highest frequency level, UDFS gradually reduces the frequency level until users feel discomfort. The proposed technique calculates an optimum frequency as the starting frequency and then reduces that frequency until user shows discomfort. When CPU reaches in ideal state, processor frequency goes to the lowest level to save battery life. Our proposed technique is implemented in Samsung Galaxy S2 and it reduces 25% power consumption compared to default DVFS and 3% than existing UDFS technique.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125082080","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315104
Mohammed Saifuddin Munna, Mohammad Ariful Islam Bhuyan, K. M. Rahman, Md Ashiqul Hoque
This paper proposed a design, implementation & performance of an energy efficient solar tracking system based on closed loop technique. This solar tracking system is autonomous dual axis hybrid type. Solar efficiency depends on PV cell and its tracking system. In our works we concentrate on the panel tracking system. Our tracking system is a sensor based tracking system and it can track the sun continuously. A sensor placed on the surface of the panel and sensor compare light intensity continuously. Then our control unit sends signal to actuator unit to reposition the panel. This system is energy efficient because the actuator unit shut down in cloudy weather and turns on in sunny weather. Powerful microcontroller used to calculate and evaluate the light intensity form sensor unit, then send instruction to actuator unit. For graceful and accurate angular motion we used the servo actuator system. It's no need additional real time clock to track annual motion and daily motion because it's based on active closed loop system. Our implemented design is more efficient and convenient than other tracker
{"title":"Design, implementation and performance analysis of a dual-axis autonomous solar tracker","authors":"Mohammed Saifuddin Munna, Mohammad Ariful Islam Bhuyan, K. M. Rahman, Md Ashiqul Hoque","doi":"10.1109/ICGET.2015.7315104","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315104","url":null,"abstract":"This paper proposed a design, implementation & performance of an energy efficient solar tracking system based on closed loop technique. This solar tracking system is autonomous dual axis hybrid type. Solar efficiency depends on PV cell and its tracking system. In our works we concentrate on the panel tracking system. Our tracking system is a sensor based tracking system and it can track the sun continuously. A sensor placed on the surface of the panel and sensor compare light intensity continuously. Then our control unit sends signal to actuator unit to reposition the panel. This system is energy efficient because the actuator unit shut down in cloudy weather and turns on in sunny weather. Powerful microcontroller used to calculate and evaluate the light intensity form sensor unit, then send instruction to actuator unit. For graceful and accurate angular motion we used the servo actuator system. It's no need additional real time clock to track annual motion and daily motion because it's based on active closed loop system. Our implemented design is more efficient and convenient than other tracker","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585433","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 : 2015-11-09DOI: 10.1109/ICGET.2015.7315099
Golap Kanti Dey, K. Ahmmed
In our research work electrical characterization with different generation of solar cells depending upon the emergence as- First Generation: Mono and Poly-crystalline Silicon, Second Generation: Thin-film Solar Cell, Third Generation: Full Spectrum Utilization with comparative efficiency study of different solar cells is investigated. Besides, major part of our research is Multi-Junction Solar Cells (MJSC), for Space Solar Power Satellite (SSPS) system, created from III-V semiconductor materials, exhibit high efficiencies comparing to other existing photovoltaic technology. Here we have shown MJSC's are composed of 3 layers of material that have different bandgaps. The upper layer has the largest bandgap while the lower layer has the smallest bandgap. This model allows less energetic photons to pass through the upper layers and be absorbed by the lower layer, which increases the overall efficiency. One significant estimation is that generated photocurrent in each layer must be the same since the layers are in series. Besides, for most effective absorption from the spectrum of incident radiation, the bandgaps of each layer should differ by approximately equal energies. Due to the high cost, multi-junction solar cells are usually used in the SSPS system, in Microwave Power Beaming from space to ground based receiving station and as collector cells where a large amount of sunlight is reflected onto the cell.
{"title":"Performance characterization of photovoltaic technology with highly efficient Multi-Junction Solar Cells for Space Solar Power Satellite system","authors":"Golap Kanti Dey, K. Ahmmed","doi":"10.1109/ICGET.2015.7315099","DOIUrl":"https://doi.org/10.1109/ICGET.2015.7315099","url":null,"abstract":"In our research work electrical characterization with different generation of solar cells depending upon the emergence as- First Generation: Mono and Poly-crystalline Silicon, Second Generation: Thin-film Solar Cell, Third Generation: Full Spectrum Utilization with comparative efficiency study of different solar cells is investigated. Besides, major part of our research is Multi-Junction Solar Cells (MJSC), for Space Solar Power Satellite (SSPS) system, created from III-V semiconductor materials, exhibit high efficiencies comparing to other existing photovoltaic technology. Here we have shown MJSC's are composed of 3 layers of material that have different bandgaps. The upper layer has the largest bandgap while the lower layer has the smallest bandgap. This model allows less energetic photons to pass through the upper layers and be absorbed by the lower layer, which increases the overall efficiency. One significant estimation is that generated photocurrent in each layer must be the same since the layers are in series. Besides, for most effective absorption from the spectrum of incident radiation, the bandgaps of each layer should differ by approximately equal energies. Due to the high cost, multi-junction solar cells are usually used in the SSPS system, in Microwave Power Beaming from space to ground based receiving station and as collector cells where a large amount of sunlight is reflected onto the cell.","PeriodicalId":404901,"journal":{"name":"2015 3rd International Conference on Green Energy and Technology (ICGET)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128439845","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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