Pub Date : 1900-01-01DOI: 10.1109/ICDRET.2016.7421521
M. Islam, M. Khan, A. Yousuf, Woon Chee Wai, C. Cheng
In this study, generation of electricity from pretreated palm oil mill effluent (POME) using Klebsiella variicola was investigated. POME wastewater with a COD value 68,360 mg/l was subjected to pretreatment with ultrasonication and used as a substrate. MFCs (Microbial Fuel Cell), enriched with pretreated palm oil mill effluent (POME) were subjected to generate electricity by using inoculation of K. variicola, collected from city wastewater. K. Variicola was isolated from city wastewater as well as from biofilm of MFC and identified using BIOLOG gene III analysis. The electrochemical activity and the performance of the MFC were evaluated by polarization curve measurement. The MFC showed average power density of 1648.70 mW/m3 and 1280.56 mW/m3 were obtained from ultrasonication pretrated POME and untreated POME respectively. The COD removal efficiency by K. variicola for POME with pretreatment was 74% and that for untreated was 48%. These results showed that the power output and COD removal efficiency can be raised in significant amount using pretreated POME in MFC.
{"title":"Electricity generation form pretreated palm oil mill effluent using Klebsiella Variicola as an inoculum in Microbial fuel cell","authors":"M. Islam, M. Khan, A. Yousuf, Woon Chee Wai, C. Cheng","doi":"10.1109/ICDRET.2016.7421521","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421521","url":null,"abstract":"In this study, generation of electricity from pretreated palm oil mill effluent (POME) using Klebsiella variicola was investigated. POME wastewater with a COD value 68,360 mg/l was subjected to pretreatment with ultrasonication and used as a substrate. MFCs (Microbial Fuel Cell), enriched with pretreated palm oil mill effluent (POME) were subjected to generate electricity by using inoculation of K. variicola, collected from city wastewater. K. Variicola was isolated from city wastewater as well as from biofilm of MFC and identified using BIOLOG gene III analysis. The electrochemical activity and the performance of the MFC were evaluated by polarization curve measurement. The MFC showed average power density of 1648.70 mW/m3 and 1280.56 mW/m3 were obtained from ultrasonication pretrated POME and untreated POME respectively. The COD removal efficiency by K. variicola for POME with pretreatment was 74% and that for untreated was 48%. These results showed that the power output and COD removal efficiency can be raised in significant amount using pretreated POME in MFC.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128176054","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 : 1900-01-01DOI: 10.1109/ICDRET.2016.7421514
Muhammad M. Roomi, A. I. Maswood, Md Shafquat Ullah Khan, M. Tariq
Renewable energy sources integrated with power electronic converters plays an important role in satisfying the energy demands in variable applications. Fuel cell being a promising technology to use as a source of electricity, the mathematical modeling of the fuel cell is studied and testing of power electronic converters are carried out in this paper. Matlab/Simulink models of the fuel cell integrated with the converters are developed. Results show the variations in the amount of fuel utilized by the stack, its corresponding consumption and efficiency of a 65kW fuel cell integrated with the traditional and Z-source converters. In addition to the stack variation, output dc voltage of converters, and inverter three phase output voltages and currents are also presented.
{"title":"Study of traditional and Z-source converter under variable fuel-flow-rate of PEMFC","authors":"Muhammad M. Roomi, A. I. Maswood, Md Shafquat Ullah Khan, M. Tariq","doi":"10.1109/ICDRET.2016.7421514","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421514","url":null,"abstract":"Renewable energy sources integrated with power electronic converters plays an important role in satisfying the energy demands in variable applications. Fuel cell being a promising technology to use as a source of electricity, the mathematical modeling of the fuel cell is studied and testing of power electronic converters are carried out in this paper. Matlab/Simulink models of the fuel cell integrated with the converters are developed. Results show the variations in the amount of fuel utilized by the stack, its corresponding consumption and efficiency of a 65kW fuel cell integrated with the traditional and Z-source converters. In addition to the stack variation, output dc voltage of converters, and inverter three phase output voltages and currents are also presented.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128333821","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 : 1900-01-01DOI: 10.1109/ICDRET.2016.7421529
Kashfia Naz Nikita, Sk Nazmul Islam, M. S. Islam, M. Saha, M. F. Khan
Bangladesh receives an average daily solar energy of 4-6.5 kWh/m2/day [1] which is highly suitable for generation of electricity through solar PV. As Bangladesh is one of the highly densely populated countries in the world [2], so, it is difficult to get empty space for generation of solar PV based power. Population growth is quite high, approximately 1.6% per year [3] and the available space is shrinking at a very fast rate. Also, as the livelihood of around 70% [4] of the population depends on agriculture, so arable lands cannot be used for solar PV based generation. However, there are some marshy lands in Bangladesh whose soil structure is mainly sandy in nature and such soil is not suitable for harvesting crops or vegetation [5]. The main aim of this paper is to focus on such lands of Bangladesh which are suitable for PV based generation. In this context, the authors have surveyed some areas in the north western zone of Bangladesh to study the possibility of solar PV based power generation. A suitable marshy land was found in the district of Sirajganj. The approximate area of the proposed land is around 44 acres where around 13MW of solar PV based power can be generated. The most advantageous part of the location of the land is that a 230kV grid line is situated together with a North West Power Generation Co., Ltd (NWPGCL) sub-station within 1km from the northern edge of the proposed area. The generated power can be directly hooked up with the 230kV grid line. Hence significant amount of energy can be extracted from Solar PV power plant to feed the national grid. The Renewable Energy Policy of the Power Ministry, Government of Bangladesh (GOB) has fixed the target to produce 5% of the total power generation by 2015 and 10% by 2020 from renewable energy sources. This means that at least 800MW power has to be generated from renewable sources by 2015 and 2000MW by 2020, taking into consideration of the predictive load growth for the coming years [6]. Relevant financial data found through RETScreen software shows that such project is quite feasible and the cost of energy stands at Tk 7.70/kWh.
{"title":"Prospect of solar PV based power generation in the marshy lands of Bangladesh: An analysis through RETScreen software","authors":"Kashfia Naz Nikita, Sk Nazmul Islam, M. S. Islam, M. Saha, M. F. Khan","doi":"10.1109/ICDRET.2016.7421529","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421529","url":null,"abstract":"Bangladesh receives an average daily solar energy of 4-6.5 kWh/m2/day [1] which is highly suitable for generation of electricity through solar PV. As Bangladesh is one of the highly densely populated countries in the world [2], so, it is difficult to get empty space for generation of solar PV based power. Population growth is quite high, approximately 1.6% per year [3] and the available space is shrinking at a very fast rate. Also, as the livelihood of around 70% [4] of the population depends on agriculture, so arable lands cannot be used for solar PV based generation. However, there are some marshy lands in Bangladesh whose soil structure is mainly sandy in nature and such soil is not suitable for harvesting crops or vegetation [5]. The main aim of this paper is to focus on such lands of Bangladesh which are suitable for PV based generation. In this context, the authors have surveyed some areas in the north western zone of Bangladesh to study the possibility of solar PV based power generation. A suitable marshy land was found in the district of Sirajganj. The approximate area of the proposed land is around 44 acres where around 13MW of solar PV based power can be generated. The most advantageous part of the location of the land is that a 230kV grid line is situated together with a North West Power Generation Co., Ltd (NWPGCL) sub-station within 1km from the northern edge of the proposed area. The generated power can be directly hooked up with the 230kV grid line. Hence significant amount of energy can be extracted from Solar PV power plant to feed the national grid. The Renewable Energy Policy of the Power Ministry, Government of Bangladesh (GOB) has fixed the target to produce 5% of the total power generation by 2015 and 10% by 2020 from renewable energy sources. This means that at least 800MW power has to be generated from renewable sources by 2015 and 2000MW by 2020, taking into consideration of the predictive load growth for the coming years [6]. Relevant financial data found through RETScreen software shows that such project is quite feasible and the cost of energy stands at Tk 7.70/kWh.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133798748","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 : 1900-01-01DOI: 10.1109/ICDRET.2016.7421509
Avijit Saha, Naznin Nahar Nipu, Md Fayyaz Khan
Normally, I-V characteristic of a solar PV under STC is a standard curve plotted through a sun simulator. However, in real life situation, the performance of the module is often affected by different environmental parameters that are not taken into account while plotting the curve. The open circuit voltage and short circuit current are directly dependent on irradiance and temperature. Due to dust accumulation, the overall temperature of a solar cell increases when compared under standard operating conditions. Again, due to partial shading, the temperature of the shaded cells increases thereby reducing the output of the shaded cells. This paper focuses on the environmental effects on the performance of a solar PV module through simulation by P-Spice based on experimental data. Through PSpice simulation, it has been found that the overall output of the solar PV decreases substantially with the generation of hot spots due to accumulation of dust and partial shading of the solar panels.
{"title":"PSpice based study of environmental effect on the performance of the solar PV module","authors":"Avijit Saha, Naznin Nahar Nipu, Md Fayyaz Khan","doi":"10.1109/ICDRET.2016.7421509","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421509","url":null,"abstract":"Normally, I-V characteristic of a solar PV under STC is a standard curve plotted through a sun simulator. However, in real life situation, the performance of the module is often affected by different environmental parameters that are not taken into account while plotting the curve. The open circuit voltage and short circuit current are directly dependent on irradiance and temperature. Due to dust accumulation, the overall temperature of a solar cell increases when compared under standard operating conditions. Again, due to partial shading, the temperature of the shaded cells increases thereby reducing the output of the shaded cells. This paper focuses on the environmental effects on the performance of a solar PV module through simulation by P-Spice based on experimental data. Through PSpice simulation, it has been found that the overall output of the solar PV decreases substantially with the generation of hot spots due to accumulation of dust and partial shading of the solar panels.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"336 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114372468","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 : 1900-01-01DOI: 10.1109/ICDRET.2016.7421483
Md Shafquat Ullah Khan, A. I. Maswood, H. D. Tafti, Muhammad M. Roomi, M. Tariq
Viability and reliability of the wind power has made Wind Turbine Systems (WTSs) a popular renewable energy resource. A bidirectional DC/DC converter is proposed in this study for the WTS. The proposed DC/DC converter controls the DC-link voltage by injecting the difference between the extracted power from permanent magnet synchronous generator (PMSG) and the output power of the grid-tied inverter, to the energy storage system. The proposed DC/DC converter controller compensates the shortage of extracted active power from PMSG under wind reduced speed condition in order to inject the constant power to the grid during normal operation. The back to back (BTB) neutral point clamped (NPC) converter is proposed to extract the maximum power from PMSG and inject the extracted power to the grid. The proposed WTS structure achieves fault ride through capability and it can inject reactive power to the grid in order to enhance the PCC voltages under voltage sags. The proportional resonant (PR) current controller is implemented for both rectifier and grid-tied inverter due to its fast response and low steady state error. The adaptive space vector modulation (ASVM) is used to generate the switching signal while balances the DC-link capacitor voltages. The performance of the proposed controller is investigates under grid faults as well as reduced wind speed condition and results have proven the applicability of the proposed controller.
{"title":"Control of bidirectional DC/DC converter for back to back NPC-based wind turbine system under grid faults","authors":"Md Shafquat Ullah Khan, A. I. Maswood, H. D. Tafti, Muhammad M. Roomi, M. Tariq","doi":"10.1109/ICDRET.2016.7421483","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421483","url":null,"abstract":"Viability and reliability of the wind power has made Wind Turbine Systems (WTSs) a popular renewable energy resource. A bidirectional DC/DC converter is proposed in this study for the WTS. The proposed DC/DC converter controls the DC-link voltage by injecting the difference between the extracted power from permanent magnet synchronous generator (PMSG) and the output power of the grid-tied inverter, to the energy storage system. The proposed DC/DC converter controller compensates the shortage of extracted active power from PMSG under wind reduced speed condition in order to inject the constant power to the grid during normal operation. The back to back (BTB) neutral point clamped (NPC) converter is proposed to extract the maximum power from PMSG and inject the extracted power to the grid. The proposed WTS structure achieves fault ride through capability and it can inject reactive power to the grid in order to enhance the PCC voltages under voltage sags. The proportional resonant (PR) current controller is implemented for both rectifier and grid-tied inverter due to its fast response and low steady state error. The adaptive space vector modulation (ASVM) is used to generate the switching signal while balances the DC-link capacitor voltages. The performance of the proposed controller is investigates under grid faults as well as reduced wind speed condition and results have proven the applicability of the proposed controller.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130577497","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 : 1900-01-01DOI: 10.1109/ICDRET.2016.7421472
Md. Abdul Gaffar, M. H. Sabuj, Fatima Mostafa, Tanvir Istiaque, M. F. Khan
Storage device in renewable energy applications plays an important role for efficient operation. For solar PV applications, storage device is an integral part during post sun shine hours to supply power to the load. For Solar Home System (SHS), approximately 60% of the total cost is due to storage battery and the battery needs replacement in every five years or so. If the performance of the battery can be enhanced, not only the cost of energy will come down appreciably but the reliability of the system will improve. Battery is needed in PV system to store the excess energy from the sun and release the power to the system again when it is needed. In other words, to enhance a system performance we have to increase the battery performance. In this paper, the parameters which play important role for optimum performance has been studied. The major two parameters that affect the battery performance are load current and temperature. It has been found that, when the discharge current is high, battery capacity reduces and the vice-versa. Again in case of temperature, when temperature increases more than the rated standard value of 25°C, capacity increases but the life time of the battery decreases. On the other hand, when the ambient temperature goes down, capacity of battery decreases but lifetime of the battery is increased. To analyse the effect of temperature and load current on battery performance, the standard equivalent circuit of battery is considered first and then the equivalent circuit is simulated using Simulink under MATLAB environment.
{"title":"Simulink based performance analysis of lead acid batteries with the variation of load current and temperature","authors":"Md. Abdul Gaffar, M. H. Sabuj, Fatima Mostafa, Tanvir Istiaque, M. F. Khan","doi":"10.1109/ICDRET.2016.7421472","DOIUrl":"https://doi.org/10.1109/ICDRET.2016.7421472","url":null,"abstract":"Storage device in renewable energy applications plays an important role for efficient operation. For solar PV applications, storage device is an integral part during post sun shine hours to supply power to the load. For Solar Home System (SHS), approximately 60% of the total cost is due to storage battery and the battery needs replacement in every five years or so. If the performance of the battery can be enhanced, not only the cost of energy will come down appreciably but the reliability of the system will improve. Battery is needed in PV system to store the excess energy from the sun and release the power to the system again when it is needed. In other words, to enhance a system performance we have to increase the battery performance. In this paper, the parameters which play important role for optimum performance has been studied. The major two parameters that affect the battery performance are load current and temperature. It has been found that, when the discharge current is high, battery capacity reduces and the vice-versa. Again in case of temperature, when temperature increases more than the rated standard value of 25°C, capacity increases but the life time of the battery decreases. On the other hand, when the ambient temperature goes down, capacity of battery decreases but lifetime of the battery is increased. To analyse the effect of temperature and load current on battery performance, the standard equivalent circuit of battery is considered first and then the equivalent circuit is simulated using Simulink under MATLAB environment.","PeriodicalId":365312,"journal":{"name":"2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114034848","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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