Browsing by Author "Poyrazoğlu, Göktürk"
Now showing items 41-60 of 76
-
Investigation on the effects of dc-link capacitors to DC/AC converter under various operation conditions
Bilgin, Mert Serdar (2019-05-29)In the designing stage of a DC/AC converter, determining parameters of components has an essential role such as value, size and material type. DC-Link capacitors are the critical components for DC/AC converters and define ... -
Load profile segmentation for electricity market settlement
Gunsay, M.; Bilir, C.; Poyrazoğlu, Göktürk (IEEE, 2020-09)An unsupervised learning method is used to create clusters for electricity load profiles within a group of real customers. A time-series analysis method (hierarchical clustering) is adopted. A case study is conducted with ... -
Modeling and simulation of three-phase bidirectional electric vehicle charger
The aim of this research is to investigate how an electric vehicle (EV) charger with controllers performs and affects the EV battery, integrated to the grid. At present, typical applications of EV chargers usually include ... -
Modeling and simulation of three-phase bidirectional electric vehicle charger
Şahinler, Görkem Berk; Poyrazoğlu, Göktürk (IEEE, 2021)This paper aims to investigate how an electric vehicle (EV) charger with a controller performs and affects the EV battery, integrated into the grid. A bidirectional electric vehicle charging system is designed and modeled ... -
Modeling battery sizing optimization algorithms for various use cases
Battery energy storage systems (BESS) increase energy controllability and grid flexibility. One of the most important issues in BESS investments is optimal BESS sizing for various needs. In this thesis, it is aimed to ... -
Multi-criteria decision model for the assessment of offshore wind energy potential of Tunisia
Zahmoul, Houda; El Sayed, Ahmad; Poyrazoğlu, Göktürk (IEEE, 2021-05-05)This paper investigates the potential for the development of offshore wind power plants in Tunisia. The goal of this research is to increase the possibility of using renewable energy available in the country and reduce the ... -
A new LED driver design with CRM flyback topology and high power factor and low total harmonic distortion
Kavcı, Mustafa (2018-01)In many of today's solid-state lighting (SSL) applications, Critical Conduction Mode (CRM) Flyback PFC converter is a popular solution due to its limited component count and simple structure with respect to other switched ... -
Optimal battery sizing & dispatch model for transformer loss reduction: A new local servicb
Sancar, Semanur; Kartcı, Emin; Poyrazoğlu, Göktürk (IEEE, 2022)The possible services of batteries are expanding within the scope of transforming electricity networks. In this study, the potential of batteries to increase transformer efficiency is revealed. It is aimed to maximize the ... -
Optimal battery sizing & dispatch model for transformer loss reduction: A new local service
Sancar, Semanur; Kartcı, Emin; Poyrazoğlu, Göktürk (IEEE, 2022)The possible services of batteries are expanding within the scope of transforming electricity networks. In this study, the potential of batteries to increase transformer efficiency is revealed. It is aimed to maximize the ... -
Optimal battery sizing in micro-grid by linear programming
Poyrazoğlu, Göktürk; Taşkıran, Burak Arda; Kayabölen, Naim (IEEE, 2020-10-20)Energy storage plays a crucial role in the micro-grid design in which no grid connection is possible. Although the cost of storage reduced in the past decade, it is still considerably high; thus, the optimization of the ... -
The optimal placement model for electric vehicle charging stations
Arayıcı, Kerem Can; Poyrazoğlu, Göktürk (IEEE, 2019)Nowadays, due to the increase in prices and the environmental pollution of fossil fuels, individuals and governments are tending towards the concept of electric vehicles. Therefore, the popularity of electric vehicles is ... -
Optimal vehicle-to-grid controller for energy arbitrage and frequency regulation markets
Kocer, Baki; Türkyılmaz, İsmail; Poyrazoğlu, Göktürk (IEEE, 2021)Vehicle-to-Grid (V2G) is a technology that is both beneficial for electric vehicle users and the sustainability of the world. Drivers plug their vehicles into the charging station and V2G technology provides bidirectional ... -
Optimizing distributed generation sizing and siting using particle swarm optimization: A comparative study
Ahmed, Eıhab Elgaıly Elmukshfı; Poyrazoğlu, Göktürk (IEEE, 2023)In recent years, distributed generation (DG) has become increasingly popular as a means of mitigating the impact of climate change and ensuring a reliable and resilient power supply. To optimize the use of DG, it is essential ... -
A pilot project for power quality improvements in distribution system by a Li-ion battery
Çetin, A.; Ozen, C.; Bayatmakoo, A.; Kaya, K.; Poyrazoğlu, Göktürk (IEEE, 2022)Power quality (PQ) metrics deterioration occurs in the distribution system by increasing the distributed generation plants, the existence of non-linear and harmonic loads. As a distribution system operator running under ... -
A platform for personal e-mobility with route forecasting
Kaya, Kamil; Poyrazoğlu, Göktürk (IEEE, 2020)This study reports a new e-mobility platform to construct effective usage of charging points by electric vehicle users to eliminate long charge durations. The e-mobility platform includes such subsystems as smartphones, ... -
A platform for personal e-mobility with route forecasting
Kaya, Kamil (2021-01-14)Decreasing fossil fuel sources and increasing carbon exhaust rate makes human-beings lead to search on different technological fields and to develop new technology. Also, thanks to developing tendency to the clean energy ... -
The potential and economic analysis of grid-connected solar PV power in Kenya
Samu, Remember; Poyrazoğlu, Göktürk; Fahrioglu, M. (IEEE, 2019-06)This present study is aimed at minimizing the dependence on fossil fuels thus reducing greenhouse gas (GHG) emissions and also to curb for the rising energy demands in Kenya. 23 locations are considered for their techno-economic ... -
Prediction algorithm & learner selection for European day-ahead electricity prices
Ülgen, Toygar; El Sayed, Ahmad; Poyrazoğlu, Göktürk (IEEE, 2020-10)The prediction of day-ahead electricity prices with higher accuracy is always helpful for the market players of the power exchange. This study was intended in the first place to find out the best time series prediction ... -
Predictor analysis for electricity price forecasting by multiple linear regression
Ülgen, Toygar; Poyrazoğlu, Göktürk (IEEE, 2020)This paper examines the multiple linear regression method on electricity price forecasting. Numerous predictors are analyzed to reduce the mean absolute percentage error. The training data includes the dates from September ... -
Price estimation by random walk mean reversion in day-ahead electricity market
Poyrazoğlu, Göktürk (IEEE, 2019)The fluctuations in the Day-ahead electricity market (DAM) prices generally follow the periodic demand variance. However, the observations of historical data also reveal large jumps or spikes that might be defined as the ...
Share this page