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Ali Durusu
Dept of ECE, IIITDM Kancheepuram, Chennai, India

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Conference paper
Published: 01 September 2020 in 2020 International Conference on Smart Energy Systems and Technologies (SEST)
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Due to rapid urbanization, inclination in the energy demand has been experienced in the recent years which posed the threat of energy security and global warming. Artificial lighting in buildings shares an impactful amount of energy consumption, which needs to be minimize. Semitransparent building integrated photovoltaic (BIPV) cells have the potential of generating clean energy and allowing the daylight harvesting in the building, which can minimize the energy consumption across lighting by a great extent. In this paper opportunities of energy saving across low voltage DC (LVDC) nanogrid powered LED lighting in an industrial building by considering daylight harvesting and BIPV cells has been investigated. Results reflects that a significant amount of energy can be conserved across LED lighting by utilizing BIPV cells which allows daylight through it in the room. Moreover, a notable amount of clean energy can also be generated using semitransparent BIPV cells.

ACS Style

Ajay Shankar; K. Vijayakumar; B. Chitti Babu; Ali Durusu. Smart LED Lighting System for Energy Efficient Industrial and Commercial LVDC Nanogrid Powered Buildings with BIPV. 2020 International Conference on Smart Energy Systems and Technologies (SEST) 2020, 1 -6.

AMA Style

Ajay Shankar, K. Vijayakumar, B. Chitti Babu, Ali Durusu. Smart LED Lighting System for Energy Efficient Industrial and Commercial LVDC Nanogrid Powered Buildings with BIPV. 2020 International Conference on Smart Energy Systems and Technologies (SEST). 2020; ():1-6.

Chicago/Turabian Style

Ajay Shankar; K. Vijayakumar; B. Chitti Babu; Ali Durusu. 2020. "Smart LED Lighting System for Energy Efficient Industrial and Commercial LVDC Nanogrid Powered Buildings with BIPV." 2020 International Conference on Smart Energy Systems and Technologies (SEST) , no. : 1-6.

Journal article
Published: 31 August 2020 in European Journal of Science and Technology
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Bu çalışmada, fotovoltaik (PV) sistem eğitim seti sunulmuştur. Bu basit ve hızlı eğitim seti, fotovoltaik panellerin kirlenme, eğim açısı ve güç çıkışı arasındaki ilişkiyi göstermeyi sağlamaktadır. Tasarlanan eğitim seti düşük maliyetli olup lise ve lisans öğrencilerinin kullanımına uygundur. Geliştirilen eğitim seti Hakkari Üniversitesi Çölemerik Meslek Yüksekokulu Elektrik Programı öğrencilerine eğitim amaçlı kullandırılmıştır. Tasarlanan eğitim setini kullanan öğrencilerin fotovoltaik sistemleri öğrenmedeki etkisini belirlemek için anket yapılmıştır. Anketten elde edilen sonuçlar, tasarlanan deney setinin fotovoltaik sistem eğitimine uygun olduğunu öğrencilerin çoğunluğundan alınan olumla geri dönüş ile göstermiştir.

ACS Style

Ali Erduman; Erşan Ömer Yüzer; Ali Durusu; Fikret Yildiz. Fotovoltaik Sistemlerin Öğretimini Destekleyen Bir Eğitim Kiti. European Journal of Science and Technology 2020, 916 -922.

AMA Style

Ali Erduman, Erşan Ömer Yüzer, Ali Durusu, Fikret Yildiz. Fotovoltaik Sistemlerin Öğretimini Destekleyen Bir Eğitim Kiti. European Journal of Science and Technology. 2020; (19):916-922.

Chicago/Turabian Style

Ali Erduman; Erşan Ömer Yüzer; Ali Durusu; Fikret Yildiz. 2020. "Fotovoltaik Sistemlerin Öğretimini Destekleyen Bir Eğitim Kiti." European Journal of Science and Technology , no. 19: 916-922.

Journal article
Published: 01 June 2020 in Energies
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Considering the recent drop (up to 86%) in photovoltaic (PV) module prices from 2010 to 2017, many countries have shown interest in investing in PV plants to meet their energy demand. In this study, a detailed design methodology is presented to achieve high benefits with low installation, maintenance and operation costs of PV plants. This procedure includes in detail the semi-hourly average time meteorological data from the location to maximise the accuracy and detailed characteristics of different PV modules and inverters. The minimum levelised cost of energy (LCOE) and maximum annual energy are the objective functions in this proposed procedure, whereas the design variables are the number of series and parallel PV modules, the number of PV module lines per row, tilt angle and orientation, inter-row space, PV module type, and inverter structure. The design problem was solved using a recent hybrid algorithm, namely, the grey wolf optimiser-sine cosine algorithm. The high performance for LCOE-based design optimisation in economic terms with lower installation, maintenance and operation costs than that resulting from the use of maximum annual energy objective function by 12%. Moreover, sensitivity analysis showed that the PV plant performance can be improved by decreasing the PV module annual reduction coefficient.

ACS Style

Tekai Eddine Khalil Zidane; Mohd Rafi Adzman; Mohammad Faridun Naim Tajuddin; Samila Mat Zali; Ali Durusu; Saad Mekhilef. Optimal Design of Photovoltaic Power Plant Using Hybrid Optimisation: A Case of South Algeria. Energies 2020, 13, 2776 .

AMA Style

Tekai Eddine Khalil Zidane, Mohd Rafi Adzman, Mohammad Faridun Naim Tajuddin, Samila Mat Zali, Ali Durusu, Saad Mekhilef. Optimal Design of Photovoltaic Power Plant Using Hybrid Optimisation: A Case of South Algeria. Energies. 2020; 13 (11):2776.

Chicago/Turabian Style

Tekai Eddine Khalil Zidane; Mohd Rafi Adzman; Mohammad Faridun Naim Tajuddin; Samila Mat Zali; Ali Durusu; Saad Mekhilef. 2020. "Optimal Design of Photovoltaic Power Plant Using Hybrid Optimisation: A Case of South Algeria." Energies 13, no. 11: 2776.

Journal article
Published: 06 April 2020 in Bitlis Eren Üniversitesi Fen Bilimleri Dergisi
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ACS Style

Ali Durusu; Ali Erduman. PV Panellerin Farklı Koşullar Altında I-V Eğrisini Çıkartan ve Maksimum Güç Noktası Takibi Yapan Deney Sisteminin Tasarımı. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 2020, 1 .

AMA Style

Ali Durusu, Ali Erduman. PV Panellerin Farklı Koşullar Altında I-V Eğrisini Çıkartan ve Maksimum Güç Noktası Takibi Yapan Deney Sisteminin Tasarımı. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2020; ():1.

Chicago/Turabian Style

Ali Durusu; Ali Erduman. 2020. "PV Panellerin Farklı Koşullar Altında I-V Eğrisini Çıkartan ve Maksimum Güç Noktası Takibi Yapan Deney Sisteminin Tasarımı." Bitlis Eren Üniversitesi Fen Bilimleri Dergisi , no. : 1.

Journal article
Published: 01 February 2020 in Electric Power Systems Research
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ACS Style

Mehmet Bircan; Ali Durusu; Bedri Kekezoglu; Onur Elma; Ugur Savas Selamogullari. Experimental determination of ZIP coefficients for residential appliances and ZIP model based appliance identification: The case of YTU Smart Home. Electric Power Systems Research 2020, 179, 1 .

AMA Style

Mehmet Bircan, Ali Durusu, Bedri Kekezoglu, Onur Elma, Ugur Savas Selamogullari. Experimental determination of ZIP coefficients for residential appliances and ZIP model based appliance identification: The case of YTU Smart Home. Electric Power Systems Research. 2020; 179 ():1.

Chicago/Turabian Style

Mehmet Bircan; Ali Durusu; Bedri Kekezoglu; Onur Elma; Ugur Savas Selamogullari. 2020. "Experimental determination of ZIP coefficients for residential appliances and ZIP model based appliance identification: The case of YTU Smart Home." Electric Power Systems Research 179, no. : 1.

Research article
Published: 17 December 2019 in The International Journal of Electrical Engineering & Education
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With the increase in the market share of renewable energy sources, the feasibility analysis of the renewable energy-based power systems has also gained importance. In this study, a MATLAB-based interface for the feasibility analysis of photovoltaic systems is proposed in order to be used in educational purposes. The interface has been presented to the students of Yildiz Technical University as an educational material, and positive feedback has been received from the majority of the students.

ACS Style

Ayse C Bilu; Ali Durusu; Kadir Dogansahin; Bedri Kekezoglu. A new educational software package for photovoltaic system feasibility: PVGUI. The International Journal of Electrical Engineering & Education 2019, 1 .

AMA Style

Ayse C Bilu, Ali Durusu, Kadir Dogansahin, Bedri Kekezoglu. A new educational software package for photovoltaic system feasibility: PVGUI. The International Journal of Electrical Engineering & Education. 2019; ():1.

Chicago/Turabian Style

Ayse C Bilu; Ali Durusu; Kadir Dogansahin; Bedri Kekezoglu. 2019. "A new educational software package for photovoltaic system feasibility: PVGUI." The International Journal of Electrical Engineering & Education , no. : 1.

Conference paper
Published: 01 December 2019 in 2019 IEEE 7th Conference on Systems, Process and Control (ICSPC)
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Photovoltaic (PV) technology has become increasingly an important source of energy. In PV systems, the inverter is a crucial device. Hence, it can be employed in different structures to build the PV plant and to improve the system performance. In this paper, the minimum Levelized cost of electricity (LCOE) is computed by the proposed optimization procedure for comparison purpose between the most used topologies for PV plants, central and string structures. Two cases with a nominal power limit of 100 kWp and, no power limit using all PV plant area are considered. As a result, PV plant using central layout presents the lowest LCOE with limited nominal power and with no limit compared to string mode. Additionally, the sensitivity analysis proves that by increasing the inverter efficiency, the PV plant LCOE decreases.

ACS Style

Tekai Eddine Khalil Zidane; Mohd Rafi Adzman; Samila Mat Zali; Saad Mekhilef; Ali Durusu; Mohammead Faridun Naim Tajuddin. Cost-Effective Topology for Photovoltaic Power Plants using Optimization Design. 2019 IEEE 7th Conference on Systems, Process and Control (ICSPC) 2019, 210 -215.

AMA Style

Tekai Eddine Khalil Zidane, Mohd Rafi Adzman, Samila Mat Zali, Saad Mekhilef, Ali Durusu, Mohammead Faridun Naim Tajuddin. Cost-Effective Topology for Photovoltaic Power Plants using Optimization Design. 2019 IEEE 7th Conference on Systems, Process and Control (ICSPC). 2019; ():210-215.

Chicago/Turabian Style

Tekai Eddine Khalil Zidane; Mohd Rafi Adzman; Samila Mat Zali; Saad Mekhilef; Ali Durusu; Mohammead Faridun Naim Tajuddin. 2019. "Cost-Effective Topology for Photovoltaic Power Plants using Optimization Design." 2019 IEEE 7th Conference on Systems, Process and Control (ICSPC) , no. : 210-215.

Journal article
Published: 22 September 2019 in Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji
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ACS Style

Ali Erduman; Bahri Uzunoğlu; Ali Durusu. Meteorolojik, Finansal ve Elektrik Şebeke Verileri Kullanılarak Rüzgâr Enerji Santralleri için Bara Bölgelerini Belirlemeye Yönelik Yeni Bir Önişlem Yaklaşımı. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji 2019, 7, 676 -687.

AMA Style

Ali Erduman, Bahri Uzunoğlu, Ali Durusu. Meteorolojik, Finansal ve Elektrik Şebeke Verileri Kullanılarak Rüzgâr Enerji Santralleri için Bara Bölgelerini Belirlemeye Yönelik Yeni Bir Önişlem Yaklaşımı. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji. 2019; 7 (3):676-687.

Chicago/Turabian Style

Ali Erduman; Bahri Uzunoğlu; Ali Durusu. 2019. "Meteorolojik, Finansal ve Elektrik Şebeke Verileri Kullanılarak Rüzgâr Enerji Santralleri için Bara Bölgelerini Belirlemeye Yönelik Yeni Bir Önişlem Yaklaşımı." Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji 7, no. 3: 676-687.

Journal article
Published: 08 June 2019 in Solar Energy
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At present, photovoltaic (PV) power plants are growing rapidly to respond to the high demand for energy. In this case, improving the levelized cost of electricity (LCOE) and produced energy for PV power plants is a complicated design tradeoff that involves several parameters, such as meteorological data variation, nonlinear operation of the PV plant components, inverter types, and PV module efficiency. Hence, this study intended to present the application of recent meta-heuristic techniques, namely, salp swarm algorithm (SSA), whale optimization algorithm (WOA), and grey wolf optimization (GWO), for two different cases. The technology of crystalline silicon (c-Si) and thin-film cadmium telluride (CdTe) PV modules is adopted for economic considerations and to determine the suitable PV module for the PV power plant. The optimization process is considered to minimize the LCOE and suggest the optimal sizing of PV modules and inverters on the basis of several candidates and their arrangement within the available area with optimal PV module tilt angle and orientation, as well as the optimal distribution of PV modules among the inverters. The new approaches have been compared with particle swarm optimization (PSO) algorithm. The proposed technique (GWO) shows significant results compared with other methods (PSO) in solving the optimal design of the PV power plant. The PV plant LCOE using thin-film (CdTe) has the lowest value compared to crystalline silicon (c-Si). The PV module efficiency and technology affect the overall dimension of the PV power plant.

ACS Style

Tekai Eddine Khalil Zidane; Mohd Rafi Bin Adzman; Mohammad Faridun Naim Tajuddin; Samila Mat Zali; Ali Durusu. Optimal configuration of photovoltaic power plant using grey wolf optimizer: A comparative analysis considering CdTe and c-Si PV modules. Solar Energy 2019, 188, 247 -257.

AMA Style

Tekai Eddine Khalil Zidane, Mohd Rafi Bin Adzman, Mohammad Faridun Naim Tajuddin, Samila Mat Zali, Ali Durusu. Optimal configuration of photovoltaic power plant using grey wolf optimizer: A comparative analysis considering CdTe and c-Si PV modules. Solar Energy. 2019; 188 ():247-257.

Chicago/Turabian Style

Tekai Eddine Khalil Zidane; Mohd Rafi Bin Adzman; Mohammad Faridun Naim Tajuddin; Samila Mat Zali; Ali Durusu. 2019. "Optimal configuration of photovoltaic power plant using grey wolf optimizer: A comparative analysis considering CdTe and c-Si PV modules." Solar Energy 188, no. : 247-257.

Journal article
Published: 31 August 2018 in European Journal of Science and Technology
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ACS Style

Ali Erduman; Bedri Kekezoğlu; Ali Durusu. Küçük Güçlü Rüzgar Santrallerinin Kurulumu ve Şebekeye Etkilerinin Teknik ve Ekonomik Açıdan Değerlendirilmesi: Uygulama Çalışması. European Journal of Science and Technology 2018, 1 -6.

AMA Style

Ali Erduman, Bedri Kekezoğlu, Ali Durusu. Küçük Güçlü Rüzgar Santrallerinin Kurulumu ve Şebekeye Etkilerinin Teknik ve Ekonomik Açıdan Değerlendirilmesi: Uygulama Çalışması. European Journal of Science and Technology. 2018; (13):1-6.

Chicago/Turabian Style

Ali Erduman; Bedri Kekezoğlu; Ali Durusu. 2018. "Küçük Güçlü Rüzgar Santrallerinin Kurulumu ve Şebekeye Etkilerinin Teknik ve Ekonomik Açıdan Değerlendirilmesi: Uygulama Çalışması." European Journal of Science and Technology , no. 13: 1-6.

Journal article
Published: 31 August 2018 in European Journal of Science and Technology
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One of the most important parameters in order to obtain maximum solar radiation for solar power system is the optimum tilt angle of photovoltaic (PV) panels. In this article, the optimum tilt angles of photovoltaic panels are determined for regions of different climatic zones. The annual maximum energy output of PV panels is calculated in MATLAB considering irradiance data only. Annual, seasonal and monthly optimum tilt angles of PV arrays of approximately same latitude with different climatic zones are calculated for fixed tilt angles on the basis of maximum energy output. The incident global solar radiation on the horizontal surface is separated to its direct and diffuse components with a solar angle based mathematical model. Depending on region’s latitudes, direct and diffuse radiation, and tilt angle of PV panels, the incident global radiation on inclined surface is calculated for USA conditions. This study is conducted for seven different regions with very close latitudes but different climate zones. It is clear from the result that PV panels with fixed tilt angles located in approximately-same latitudes may result in different optimum tilt angle due to the dissimilar climatic impacts.

ACS Style

Ali Ajder; Ali Durusu; Ismail Nakir. İklim Koşullarının PV Panel Optimum Eğim Açısına Etkisi. European Journal of Science and Technology 2018, 84 -90.

AMA Style

Ali Ajder, Ali Durusu, Ismail Nakir. İklim Koşullarının PV Panel Optimum Eğim Açısına Etkisi. European Journal of Science and Technology. 2018; (13):84-90.

Chicago/Turabian Style

Ali Ajder; Ali Durusu; Ismail Nakir. 2018. "İklim Koşullarının PV Panel Optimum Eğim Açısına Etkisi." European Journal of Science and Technology , no. 13: 84-90.

Journal article
Published: 20 February 2018 in Journal of Solar Energy Engineering
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Photovoltaic (PV) hybrid systems and their optimal energy management are still being actively studied. PV systems must be positioned at optimal tilt and azimuth angles to obtain maximum system performance. This paper presents the effect of energy management of a grid-connected PV-battery-load system on optimal PV placement using a linear programing (LP) method. The optimal placement of PV arrays aims to minimize the electricity cost of a fixed PV system for investors by considering monthly average daily global radiation, ambient temperature, wind speed, demand management constraints, and electricity tariffs in Turkey. The analysis is extended to consider 68 locations across Turkey. The analysis reveals that the optimal placement (optimal tilt and azimuth angle) can be different from that of previous studies because of multiple objective considerations. The optimal tilt angle results are lower than the local latitude in the range of 0 deg–8 deg in all regions. Furthermore, the optimal azimuth angle results are in the range of 6 deg–24 deg westbound throughout Turkey. These results can play a significant role for investments in the design of grid-connected PV-battery-load systems.

ACS Style

Huseyin Akdemir; Ali Durusu; Ali Erduman; Ismail Nakir. Effect of Energy Management of a Grid Connected Photovoltaic/Battery/Load System on the Optimal Photovoltaic Placement on a National Scale: The Case of Turkey. Journal of Solar Energy Engineering 2018, 140, 1 .

AMA Style

Huseyin Akdemir, Ali Durusu, Ali Erduman, Ismail Nakir. Effect of Energy Management of a Grid Connected Photovoltaic/Battery/Load System on the Optimal Photovoltaic Placement on a National Scale: The Case of Turkey. Journal of Solar Energy Engineering. 2018; 140 (2):1.

Chicago/Turabian Style

Huseyin Akdemir; Ali Durusu; Ali Erduman; Ismail Nakir. 2018. "Effect of Energy Management of a Grid Connected Photovoltaic/Battery/Load System on the Optimal Photovoltaic Placement on a National Scale: The Case of Turkey." Journal of Solar Energy Engineering 140, no. 2: 1.

Journal article
Published: 22 December 2017 in Journal of Solar Energy Engineering
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A secure and reliable supply of energy is important for economic stability and even in social life. Increasing human population, industrialization, and rising living standards lead to increased electrical energy demand. Uncertainties in oil prices, shortage of fossil fuel reserves, and environmental pollution from conventional fuels leads solar energy as an alternative resource for electricity production. The share of installed photovoltaic (PV) capacity as a percent of total installed power generating capacity is increasing every year. In this study, an improved methodology to design large-scale PV power plant is proposed. The proposed methodology is performed for designing optimal configurations of PV power plants. The design methodology is performed using commercially available PV modules and inverters. In addition, solar radiation, ambient temperature, wind speed, shadow effect, and location and shape of plant field are taken into consideration as input parameters. The alternatives and parameters are evaluated with the purpose of minimizing the levelized cost of generated electricity (LCOE). The methodology includes the use of a genetic algorithm (GA) for determining the optimal number of PV modules and inverters, optimum tilt angle of PV modules, required installation area for the plant and optimum cable cross section and lengths. In the paper, the methodology is implemented, and case studies and results using pvsyst software for the same case studies are compared with each other.

ACS Style

Ali Durusu; Ali Erduman. An Improved Methodology to Design Large-Scale Photovoltaic Power Plant. Journal of Solar Energy Engineering 2017, 140, 1 .

AMA Style

Ali Durusu, Ali Erduman. An Improved Methodology to Design Large-Scale Photovoltaic Power Plant. Journal of Solar Energy Engineering. 2017; 140 (1):1.

Chicago/Turabian Style

Ali Durusu; Ali Erduman. 2017. "An Improved Methodology to Design Large-Scale Photovoltaic Power Plant." Journal of Solar Energy Engineering 140, no. 1: 1.

Original paper
Published: 22 November 2017 in Electrical Engineering
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Photovoltaic (PV) systems are one of the clean and sustainable energy source. The performance and lifetime of the PV system are mainly affected by maximum power point tracker (MPPT) algorithms, ambient conditions (e.g., radiation, temperature and wind speed) and PV technologies (i.e., monocrystalline, polycrystalline and thin film). In the literature, some of the power electronic converters in the PV system have been analyzed for different locations and mission profiles. However, lifetime evaluation of MPPT has not been investigated under different PV technologies. In this study, a lifetime evaluation for MPPT is presented in terms of three different PV technologies. The output power of PV technologies is obtained by PV model with a high accuracy based on measured radiation, temperature and wind speed profile. The power distribution and relative damages are calculated for each PV technology. Lifetime evaluations of MPPT have been carried out considering relative damages. MPPT lifetime is calculated as 42.5 years for monocrystalline, 46 years for polycrystalline and 47.5 years for thin film PV technology. The results reveal that PV technology has a significant impact on the lifetime of MPPT.

ACS Style

Hakan Akca; Ramazan Ayaz; Ali Durusu. Lifetime analysis of semiconductor switch of MPPT for different photovoltaic technologies considering ambient conditions. Electrical Engineering 2017, 100, 1881 -1889.

AMA Style

Hakan Akca, Ramazan Ayaz, Ali Durusu. Lifetime analysis of semiconductor switch of MPPT for different photovoltaic technologies considering ambient conditions. Electrical Engineering. 2017; 100 (3):1881-1889.

Chicago/Turabian Style

Hakan Akca; Ramazan Ayaz; Ali Durusu. 2017. "Lifetime analysis of semiconductor switch of MPPT for different photovoltaic technologies considering ambient conditions." Electrical Engineering 100, no. 3: 1881-1889.

Journal article
Published: 30 June 2017 in Pressacademia
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ACS Style

Mehmet Bircan; Ali Durusu; Bedri Kekezoglu; Onur Elma; Ugur Savas Selamogullari. Determination of zip coefficients for residential loads. Pressacademia 2017, 5, 176 -180.

AMA Style

Mehmet Bircan, Ali Durusu, Bedri Kekezoglu, Onur Elma, Ugur Savas Selamogullari. Determination of zip coefficients for residential loads. Pressacademia. 2017; 5 (1):176-180.

Chicago/Turabian Style

Mehmet Bircan; Ali Durusu; Bedri Kekezoglu; Onur Elma; Ugur Savas Selamogullari. 2017. "Determination of zip coefficients for residential loads." Pressacademia 5, no. 1: 176-180.

Journal article
Published: 25 April 2017 in Journal of Solar Energy Engineering
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This study presents a numerical approach to calculate the optimum photovoltaic (PV) tilt angle by considering the three different PV technologies (monocrystalline, polycrystalline, and thin film). This analysis focuses on determination of optimum tilt angle considering seasonal and yearly solar radiation on a plane (Wh/m2) and seasonal and yearly energy production (Wh) of PVs. The angle at maximum global radiation and maximum energy output is considered as the optimum tilt angle. It is found that optimum tilt angles obtained by total radiation and total energy output are different from each other considering seasonal and yearly base. Total radiation-based tilt angle results show that the optimum tilt angle is 13 deg in spring, 9 deg in summer, 17 deg in autumn, 12 deg in winter, and 12 deg as yearly. Energy production-based optimum tilt angles vary from 5 deg to 13 deg for monocrystalline, from 11 deg to 15 deg for polycrystalline, and from 12 deg to 25 deg for thin film technology according to seasonal and yearly tilt angle results.

ACS Style

Ramazan Ayaz; Ali Durusu; Hakan Akca. Determination of Optimum Tilt Angle for Different Photovoltaic Technologies Considering Ambient Conditions: A Case Study for Burdur, Turkey. Journal of Solar Energy Engineering 2017, 139, 041001 .

AMA Style

Ramazan Ayaz, Ali Durusu, Hakan Akca. Determination of Optimum Tilt Angle for Different Photovoltaic Technologies Considering Ambient Conditions: A Case Study for Burdur, Turkey. Journal of Solar Energy Engineering. 2017; 139 (4):041001.

Chicago/Turabian Style

Ramazan Ayaz; Ali Durusu; Hakan Akca. 2017. "Determination of Optimum Tilt Angle for Different Photovoltaic Technologies Considering Ambient Conditions: A Case Study for Burdur, Turkey." Journal of Solar Energy Engineering 139, no. 4: 041001.

Chapter
Published: 10 March 2017 in Lecture Notes in Energy
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Solar energy is one of the most important energy, which is environmentally friendly such as clean, inexhaustible and free, among the renewable energy sources. Studies on solar photovoltaic (PV) energy generation system were promoted in last two decades. The main application of PV systems are in stand-alone (water pumping, lighting, electrical vehicle, etc.), hybrid and grid-connected (PV power plants) configuration. Stand-alone PV power generation system is considered as good alternative for places that are far from conventional power generation/transmission/distribution system. PV generation systems have two big problems; PV conversion efficiency is very low and PV electricity generation is effected from changing of weather condition. PV output varies periodically in a year and in a day, and is not stable due to environmental condition. Accordingly, in order to increase PV output and PV efficiency, it is crucial to analyze PV output considering solar radiation, temperature, wind speed, shadow, etc. Maximum power point trackers (MPPTs) are employed for extracting power from photovoltaic (PV) panels. MPPTs enforce the solar modules to operate at maximum power point (MPP) under the fluctuations of ambient conditions. Therefore, they take a vital role for increasing of PV system efficiency. In this part, the case studies of MPPT system, which includes stand-alone and hybrid PV systems, will be briefly reviewed, followed by discussion of the MPPT modeling, design, etc. Several stand-alone and hybrid MPPT application will be presented. Latest developments in MPPT methods will be summarized. Finally some of the present challenges facing the MPPT techniques will be explored.

ACS Style

Ali Durusu; Ismail Nakir; Mugdesem Tanrioven. Photovoltaic System: Case Studies. Lecture Notes in Energy 2017, 37, 235 -260.

AMA Style

Ali Durusu, Ismail Nakir, Mugdesem Tanrioven. Photovoltaic System: Case Studies. Lecture Notes in Energy. 2017; 37 ():235-260.

Chicago/Turabian Style

Ali Durusu; Ismail Nakir; Mugdesem Tanrioven. 2017. "Photovoltaic System: Case Studies." Lecture Notes in Energy 37, no. : 235-260.

Conference paper
Published: 11 December 2015 in Third International Conference on Advances in Mechanical and Automation Engineering - MAE 2015
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ACS Style

Ali Durusu; Ali Erduman; Mugdesem Tanrioven; Muğdeşem Tanrıöven. Effect of PV Orientation on Energy Generation and Economy A Case Study for Istanbul Turkey. Third International Conference on Advances in Mechanical and Automation Engineering - MAE 2015 2015, 11 -14.

AMA Style

Ali Durusu, Ali Erduman, Mugdesem Tanrioven, Muğdeşem Tanrıöven. Effect of PV Orientation on Energy Generation and Economy A Case Study for Istanbul Turkey. Third International Conference on Advances in Mechanical and Automation Engineering - MAE 2015. 2015; ():11-14.

Chicago/Turabian Style

Ali Durusu; Ali Erduman; Mugdesem Tanrioven; Muğdeşem Tanrıöven. 2015. "Effect of PV Orientation on Energy Generation and Economy A Case Study for Istanbul Turkey." Third International Conference on Advances in Mechanical and Automation Engineering - MAE 2015 , no. : 11-14.

Journal article
Published: 17 November 2015 in Journal of Energy Resources Technology
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Photovoltaic (PV) systems are considered as a support unit and eco-friendly energy source for the electric vehicles. If the surface of the electric vehicle is covered by PV cells, it is possible to store considerable amount of energy in the battery system. In this study, different maximum power point trackers (MPPT) with different maximum power point (MPP) tracking algorithms have been tested on a PV structure moving according to a predefined motion loop. Compatibility of each algorithm to moving systems, such as electric vehicles, is presented in a real experimental environment. As a result of these experiments, positive factors in each algorithm have been defined and a new MPP tracking algorithm convenient for moving vehicle has been proposed. The proposed MPPT algorithm shows a better performance than other MPPT algorithms under fast varying radiations. However, proposed algorithm brings slightly higher costs compared to usage of other MPPT algorithms since it requires the measurement of solar irradiance. The developed algorithm is described in detail and comparative analysis and performance evaluation with other algorithms are presented.

ACS Style

Ismail Nakir; Ali Durusu; Hakan Akca; Ali Ajder; Ramazan Ayaz; Enes Ugur; Mugdesem Tanrioven. A New MPPT Algorithm for Vehicle Integrated Solar Energy System. Journal of Energy Resources Technology 2015, 138, 021601 .

AMA Style

Ismail Nakir, Ali Durusu, Hakan Akca, Ali Ajder, Ramazan Ayaz, Enes Ugur, Mugdesem Tanrioven. A New MPPT Algorithm for Vehicle Integrated Solar Energy System. Journal of Energy Resources Technology. 2015; 138 (2):021601.

Chicago/Turabian Style

Ismail Nakir; Ali Durusu; Hakan Akca; Ali Ajder; Ramazan Ayaz; Enes Ugur; Mugdesem Tanrioven. 2015. "A New MPPT Algorithm for Vehicle Integrated Solar Energy System." Journal of Energy Resources Technology 138, no. 2: 021601.

Conference paper
Published: 01 October 2014 in 2014 International Conference on Renewable Energy Research and Application (ICRERA)
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LEDs are used in many areas today. Street lighting is one of them and high-power LEDs are utilized in this area. Electrical energy is converted into light with an efficiency in 10-25% range. The rest is converted into heat. The generated heat is largely caused from LED chip. Furthermore, Driver circuit would also causes heat rise. Removing of this heat from the system is important in order to LED system efficiency because increasing of temperature causes a reduction of luminous flux. Excellent thermal management plays a significant role in terms of efficiency, reliability and durability. In this study, losses are caused from the LED chip and the heat sink which are part of the LED lighting systems are examined. These elements are thermally analyzed. The impacts of these losses on efficiency will be presented.

ACS Style

Hakan Akca; Yusuf Yasa; Ramazan Ayaz; Ali Durusu; Ali Ajder; Ismail Nakir; Muğdeşem Tanriöven. Thermal management of power LED system. 2014 International Conference on Renewable Energy Research and Application (ICRERA) 2014, 760 -764.

AMA Style

Hakan Akca, Yusuf Yasa, Ramazan Ayaz, Ali Durusu, Ali Ajder, Ismail Nakir, Muğdeşem Tanriöven. Thermal management of power LED system. 2014 International Conference on Renewable Energy Research and Application (ICRERA). 2014; ():760-764.

Chicago/Turabian Style

Hakan Akca; Yusuf Yasa; Ramazan Ayaz; Ali Durusu; Ali Ajder; Ismail Nakir; Muğdeşem Tanriöven. 2014. "Thermal management of power LED system." 2014 International Conference on Renewable Energy Research and Application (ICRERA) , no. : 760-764.