Browsing Master's Theses by Author "Poyrazoğlu, Göktürk"
Now showing items 1-20 of 22
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A4WP-QI combo system for continious wireless charging range coverage with resonance filtering
Sağlam, Üstün (2019-01-02)Distribution of wireless power charging field uniformly on a large area pad is critical for receivers, especially for wearable devices because of their small form factor receiver coil. Since the receiver coil size is quite ... -
Applications of time-series methods in electricity price forecasting
Ülgen, Toygar (2021-01-18)The prediction of day-ahead electricity prices with higher accuracy is always helpful for the market players of the power exchange. Models were designed in the first place to find out the best time-series estimation method ... -
Development of novel methodologies for rotational dynamics applications
Abbasi, Ahmad (2020-12-31)In this thesis, a novel methodology is proposed to determine the parameters of a rotating unbalance in a rotor-bearing system. For that purpose, the weighted sum of squared difference between the analytical and predicted ... -
Development of novel methodologies for the damage detection in mechanical systems
Firoozi, Behnam (2020-12-31)The present study examines the capability of various optimization algorithms and proposes novel hybrid algorithms for the more precise prediction of open-edge cracks in mechanical systems. The natural frequencies of the ... -
Electrical and financial analyses of ev charging stations by statistical and probabilistic simulation
Increasing environmental pollution with the increase of vehicles that have internal combustion engines has led people to alternative methods due to the transportation sector's share in environmental pollution. Last decade, ... -
Energy consumption modeling and optimization of speed profile for plug-in electric vechiles
Tasooji, Tohid Kargar (2018-05)In recent years, there is a surge in research on Plug-in Electric Vehicles (PEVs), as PEVs are one of the ways that we can reduce carbon emissions. Dramatic cost reduction in PEVs has resulted in their becoming mainstream ... -
Experimental analysis of the impact of the refrigerator components on conducted electromagnetic interference
As the number of electronic devices in our daily lives increases day by day, the risk of electromagnetic interference (EMI) between the devices and between the device and the grid increases. Refrigerators are the only ... -
Experimental impact analysis of the refrigerator cable design on disturbance power test
The ever-increasing variety of electronic products brings with it many tests and controls. Especially for a product such as a refrigerator, which has an important place in the lives of users and works non-stop for almost ... -
High frequency power supply design
Zengin, Özlem Özden (2019-08-20)Portability, power density, and energy e ciency are among the hottest topics of today. Therefore, the need for higher power-capacity, smaller size, and higher e ciency power supply is increasing day by day. At this point, ... -
Image fusion hardware implementation with an optimized reduction circuit
Aydın, Furkan (2018-08)In this thesis, the hardware implementation of a real-time image fusion algorithm using a High-Level Synthesis (HLS) tool is presented. Image fusion combines two or more images through a color transformation process. Di ... -
An improved speed controller for PMSM drive with unbalanced load using load torque observer
Yoldaş, Koray (2019-05-22)In order to overcome disturbance effects as load torque variations in Permanent Magnet Synchronous Motor (PMSM), an improved controller with feed forward compensation is presented in this study. Washing machines which are ... -
Integrated design and application of a campus-wide distributed-photovoltaic system
Sefer, Burak (2018-05)After releasing the regulations on unlicensed electricity generation in Turkey, the main structure of the regulatory mechanism has just finished in 2014 and renewable energy generation started to grow dramatically. Ozyegin ... -
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 ... -
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 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 ... -
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 ... -
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 ... -
Real data oriented quantitative research on the deployment of electric vehicle chargers in the distribution network
It is very evident that the number of electric vehicles worldwide will increase and that the dominant mobility concept in the future will be at the center of EVs. As a requirement of e-mobility, EVs should be rechargeable ... -
A robust voltage control method for universal ev battery charge llc resonant converters
In this study, a novel control method for LLC resonant converter with wide output voltage range and constant switching frequency is proposed targeting wide range of Electric Vehicle (EV) battery charger standards. In ... -
Safety test procedures, standards and results for Electric Bike Battery
Recently, battery project studies have been increasing worldwide. Companies carrying out these projects must have their products checked for design safety and must obtain test approval reports in order to release their ...
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