Aydemir, Mehmet Timur
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A.,Mehmet Timur
A., Mehmet Timur
Aydemir, Mehmet Timur
AYDEMIR, MEHMET TIMUR
Aydemir M.
MEHMET TIMUR AYDEMIR
AYDEMIR, Mehmet Timur
Mehmet Timur AYDEMIR
M. Aydemir
Mehmet Timur, Aydemir
Aydemir,Mehmet Timur
Aydemir,M.T.
Aydemir, M. T.
M. T. Aydemir
Mehmet Timur Aydemir
Aydemir, M.
Aydemir, MEHMET TIMUR
Aydemir T.
AydemIr, M. Timur
Aydemir, M.T.
Aydemir, M.Timur
Aydemir, M. Timur
A., Mehmet Timur
Aydemir, Mehmet Timur
AYDEMIR, MEHMET TIMUR
Aydemir M.
MEHMET TIMUR AYDEMIR
AYDEMIR, Mehmet Timur
Mehmet Timur AYDEMIR
M. Aydemir
Mehmet Timur, Aydemir
Aydemir,Mehmet Timur
Aydemir,M.T.
Aydemir, M. T.
M. T. Aydemir
Mehmet Timur Aydemir
Aydemir, M.
Aydemir, MEHMET TIMUR
Aydemir T.
AydemIr, M. Timur
Aydemir, M.T.
Aydemir, M.Timur
Aydemir, M. Timur
Job Title
Prof. Dr.
Email Address
Main Affiliation
Electrical-Electronics Engineering
Status
Current Staff
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ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
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WoS Researcher ID
Sustainable Development Goals
15
LIFE ON LAND
0
Research Products
16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
14
LIFE BELOW WATER
0
Research Products
6
CLEAN WATER AND SANITATION
0
Research Products
3
GOOD HEALTH AND WELL-BEING
0
Research Products
17
PARTNERSHIPS FOR THE GOALS
0
Research Products
4
QUALITY EDUCATION
0
Research Products
2
ZERO HUNGER
0
Research Products
10
REDUCED INEQUALITIES
0
Research Products
7
AFFORDABLE AND CLEAN ENERGY
5
Research Products
13
CLIMATE ACTION
1
Research Products
1
NO POVERTY
0
Research Products
9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
1
Research Products
12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
11
SUSTAINABLE CITIES AND COMMUNITIES
1
Research Products
5
GENDER EQUALITY
0
Research Products
Documents
71
Citations
984
h-index
14
Documents
63
Citations
751
Scholarly Output
21
Articles
15
Views / Downloads
272/1900
Supervised MSc Theses
0
Supervised PhD Theses
0
WoS Citation Count
178
Scopus Citation Count
234
WoS h-index
6
Scopus h-index
8
Patents
0
Projects
0
WoS Citations per Publication
8.48
Scopus Citations per Publication
11.14
Open Access Source
8
Supervised Theses
0
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| Journal | Count |
|---|---|
| Electrical Engineering | 2 |
| 2021 14th Ieee International Conference on Industry Applications (Induscon) | 1 |
| 2021 8th International Conference on Electrical and Electronics Engineering (Iceee 2021) | 1 |
| 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 -- 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 -- 29 October 2023 through 2 November 2023 -- Nashville -- 195932 | 1 |
| Cluster Computing | 1 |
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Now showing 1 - 10 of 21
Article A Novel Multiscale Graph Signal Processing and Network Dynamics Approach to Vibration Analysis for Stone Size Discrimination via Nonlinear Manifold Embeddings and a Convolutional Self-Attention Model(Springer Wien, 2025) Mirza, Fuat Kaan; Oz, Usame; Hekimoglu, Mustafa; Aydemir, Mehmet Timur; Pural, Yusuf Enes; Baykas, Tuncer; Pekcan, OnderUnderstanding nonlinear dynamics is critical for analyzing the hidden complexities of vibrational behavior in real-world systems. This study introduces a graph-theoretic approach to analyze the complex nonlinear temporal patterns in vibrational signals, utilizing the Tri-Axial Vibro-Dynamic Stone Classification dataset. This dataset captures high-resolution acceleration signals from controlled stone-crushing experiments, providing a unique opportunity to investigate temporal dynamics associated with distinct stone sizes. A 12-level Maximal Overlap Discrete Wavelet Transform is employed to perform multiscale signal decomposition, enabling the construction of transition graphs that encode transient and stable structural characteristics. Conceptually, transition graphs are analyzed as dynamic networks to uncover the interactions and temporal patterns embedded within vibrational signals. These networks are studied using a comprehensive suite of complexity metrics derived from information theory, graph theory, network science, and dynamical systems analysis. Metrics such as Shannon and Von Neumann's entropy evaluate signal dynamics' stochasticity and information retention. At the same time, the spectral radius measures the network's stability and structural robustness. Lyapunov exponents and fractal dimensions, informed by chaos theory and fractal geometry, further capture the degree of nonlinearity and temporal complexity. Complementing these dynamic measures, static network metrics-including the clustering coefficient, modularity, and the static Kuramoto index-offer critical discernment into the network's community structures, synchronization phenomena, and connectivity efficiency. Manifold learning techniques address the high-dimensional feature space derived from complexity metrics, with UMAP outperforming ISOMAP, Spectral Embedding, and PCA in preserving critical data structures. The reduced features are input into a convolutional self-attention model, combining localized feature extraction with long-term sequence modeling, achieving 100% classification accuracy across stone-size categories. This study presents a comprehensive framework for vibrational signal analysis, integrating multiscale graph-based representations, nonlinear dynamics quantification, and UMAP-based dimensionality reduction with a convolutional self-attention classifier. The proposed approach supports accurate classification and contributes to the development of data-driven tools for automated diagnostics and predictive maintenance in industrial and engineering contexts.Conference Object Design and Thermal Analysis of a High-Voltage High-Frequency Transformer(IEEE Computer Society, 2025) Shan, A.; Ozdemir, M.A.; Tamyürek, B.; Aydin, E.; Aydemir, M.T.High-voltage high-frequency (HVHF) transformers are one of the crucial components in HVDC power supplies. However, they occupy more space, and compared to other components in the system, they experience more energy losses. HVHF transformers need special attention to both thermal and electrical properties, mainly because of the use of ferrite cores. Ferrite materials show temperature-dependent properties, and transformer efficiency, reliability, and safety are enormously affected by the thermal behavior of ferrite cores. At high operating temperatures, the core performance may be reduced, leading to an increase in total losses and a decrease in the insulation life. Therefore, for optimal transformer design, it is very crucial to select an appropriate core material and predict its thermal behavior accurately. This article focuses on the thermal analysis and modeling of a 10 kVA, 500V/11 kV HVHF transformer using ANSYS simulation tools. Finite element analysis (FEA) is used to calculate the core losses and temperature distribution, enabling a deeper understanding of thermal limitations and design choices. © 2025 IEEE.Conference Object Citation - Scopus: 1Dual Side Control Design for a 600w Lcc Compensated Wireless Power Transfer System(Institute of Electrical and Electronics Engineers Inc., 2022) Pashaei, A.; Aydin, E.; Aydemir, M.T.The purpose of this paper is to design a dual side control for a 600 W LCC resonant WPT electrical bicycle with an 85 kHz resonant frequency. Primary side control use inverter voltage and current to determine mutual inductance and load value in coils misalignment case. The secondary side control uses a DC-DC converter that has two voltage and current feedback with a PI controller to achieve CC/CV charging in the battery. Additionally, with primary side control the high-frequency inverter operates in ZVS mode. Optimal design parameters are obtained and results and control method feasibility validated by simulations. © 2022 IEEE.Article Yüksek Da Gerilim Uygulamaları için Empedans Kaynaklı Yükseltici Çevirici Tasarımı(2023) Aydemir, Mehmet Timur; Dağ, Bülent; Özdemir, Mehmet Akif; Aydın, Emrullah; Tamyürek, BünyaminBu çalışmada yüksek DA gerilimli bir güç kaynağında kullanılmak üzere yüksek kazançlı yeni nesil bir empedans kaynaklı yükseltici çeviricinin güç katı tasarımı yapılmıştır. Ele alınan empedans kaynaklı çevirici yeni geliştirilmiş bir topoloji olup, çeviricinin temel çalışma prensibi daha önceki bir çalışmada detaylı şekilde incelenmiştir. Bu çalışmada çeviricinin hedeflenen uygulamaya yönelik tasarımı için gereken gerilim-denge ve akım-denge eşitlikleri çıkarılmıştır ve bu eşitlikler kullanılarak uygun devre elemanları değerleri belirlenmiştir. Tasarlanan çeviricinin performansı Matlab-Simulink benzetim modeli ile doğrulanmıştır.Article Citation - WoS: 2Citation - Scopus: 5Design and Implementation of a 10 Kv/10 Kw High-Frequency Center-Tapped Transformer(Springer, 2022) Rahman, Showrov; Candan, Muhammed Yusuf; Tamyurek, Bunyamin; Aydin, Emrullah; Mese, Huseyin; Aydemir, M. TimurHigh voltage high-frequency (HVHF) transformers have a crucial part in the realization of high voltage direct current (HVDC) isolated power supplies. Nevertheless, they are the bulkiest component in the system besides being one of the major contributors to the power losses. Special care is therefore required to design HVHF transformers. The main objective of this paper is to design and implement a high voltage (10 kV), high-frequency (50 kHz) center-tapped transformer with high efficiency, small size, and low cost. The proposed transformer is designed as part of a 100 kV, 10 kW DC/DC converter for supplying power to a particle accelerator. The proposed transformer steps up the input voltage (500 V) to 10 kV. Then, a five-stage full-wave Cockcroft-Walton voltage multiplier (CWVM) is used for boosting the voltage to 100 kV. A detailed step-by-step design guideline for designing an HVHF transformer is also presented. To reduce the transformer's parasitic capacitance, the secondary windings are wrapped in segments. This taken approach has been illustrated in the paper and later verified through finite element analysis (FEA). The FEA analysis shows that the transformer parasitic capacitance has reduced significantly. Following the presented design guideline, the implemented prototype transformer has been built and later tested with a single-stage CWVM. The experimental results demonstrate that the prototype transformer has successfully met the design requirements including the small size, less weight, and low-cost objectives.Review Citation - WoS: 77Citation - Scopus: 103A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications(IEEE-Inst Electrical Electronics Engineers Inc, 2022) Erel, Mehmet Zahid; Bayindir, Kamil Cagatay; Aydemir, Mehmet Timur; Chaudhary, Sanjay K.; Guerrero, Josep M.Capacitive power transfer (CPT) technology is becoming increasingly popular in various application areas. Due to its limitations, such as low frequency, low coupling capacitance, and the high voltage stress on metal plates, the studies on high power CPT applications fell behind previously. Therefore, the wideband gap (WBG) semiconductor devices and the compensation topologies are further adopted to tackle these limitations. The main purpose of the paper is to review CPT applications in terms of performance parameters, advantages, disadvantages, and also challenges. Initially, the basic principles of CPT technology are examined, which cover compensation topologies, coupler structures, transfer distance, power electronic components, and system control methods. Then, CPT applications are evaluated for performance parameters (i.e., power level, operation frequency, system efficiency, transfer distance) along with compensation types, inverter types, and coupler types. The applications are categorized into six main groups according to industrial topics as safety, consumer electronics, transport, electric machines, biomedical, and miscellaneous. Herein, power level changes from mu W to kW ranges, the operation frequency varies from 100s of kHz to 10s of MHz ranges as well. The maximum system efficiency is recorded as 97.1 %. The transfer distance varies from mu m range to 100s of mm ranges. The full-bridge inverter topology and four-plate coupler structure are noticeable in CPT applications. Finally, advantages, disadvantages, and challenges of CPT applications are evaluated in detail. This review is expected to serve as a reference for researchers who study on CPT systems and their applications.Article Solar Energy-Powered Wireless Charging System for Three-Wheeled E-Scooter Applications(Pergamon-elsevier Science Ltd, 2025) Erel, Mehmet Zahid; Ozdemir, Mehmet Akif; Aydemir, Mehmet TimurWireless power transfer (WPT) is a remarkable charging technology that addresses the range limitations and complexity of light electric vehicles. This study presents a novel approach to a solar-powered WPT system designed for three-wheeled e-scooter applications. The proposed system offers compact, lightweight, and costeffective solution with a ferrite-less structure and a series-series (SS) compensation topology, resulting in enhanced system efficiency and adaptability. The compact and efficient converters are designed to enhance performance and reduce system size. A Proportional-Integral (PI) controlled Perturb and Observe (P&O) maximum power point tracking (MPPT) method is implemented to optimize energy extraction from three solar panels. The design is validated through comprehensive simulations and demonstrates a superior dynamic response over the Incremental Conductance MPPT (ICM) method. Performance tests confirm the reliability of the experimental prototype, achieving a system efficiency of 88.5 % at 300-W output power over a 100 mm transfer distance under fully aligned condition. Comparative analyses with existing solar-powered e-cycle systems highlight the proposed design's superiority in efficiency, cost-effectiveness, and adherence to safety standards. The results indicate that the proposed design enhances sustainable urban transportation by reducing carbon emissions and decreasing reliance on fossil fuels, facilitating the wider integration of renewable energy sources.Article Citation - WoS: 19Citation - Scopus: 20A Nano-Scale Design of Arithmetic and Logic Unit for Energy-Efficient Signal Processing Devices Based on a Quantum-Based Technology(Springer, 2025) Zohaib, Muhammad; Navimipour, Nima Jafari; Aydemir, Mehmet Timur; Ahmadpour, Seyed-SajadSignal processing had a significant impact on the development of many elements of modern life, including telecommunications, education, healthcare, industry, and security. The semiconductor industry is the primary driver of signal processing innovation, producing ever-more sophisticated electronic devices and circuits in response to global demand. In addition, the central processing unit (CPU) is described as the "brain" of a computer or all electronic devices and signal processing. CPU is a critical electronic device that includes vital components such as memory, multiplier, adder, etc. Also, one of the essential components of the CPU is the arithmetic and logic unit (ALU), which executes the arithmetic and logical operations within all types of CPU operations, such as addition, multiplication, and subtraction. However, delay, occupied areas, and energy consumption are essential parameters in ALU circuits. Since the recent ALU designs experienced problems like high delay, high occupied area, and high energy consumption, implementing electronic circuits based on new technology can significantly boost the performance of entire signal processing devices, including microcontrollers, microprocessors, and printed devices, with high-speed and low occupied space. Quantum dot cellular automata (QCA) is an effective technology for implementing all electronic circuits and signal processing applications to solve these shortcomings. It is a transistor-less nanotechnology being explored as a successor to established technologies like CMOS and VLSI due to its ultra-low power dissipation, high device density, fast operating speed in THz, and reduced circuit complexity. This research proposes a ground-breaking ALU that upgrades electrical devices such as microcontrollers by applying cutting-edge QCA nanotechnology. The primary goal is to offer a novel ALU architecture that fully utilizes the potential of QCA nanotechnology. Using a new and efficient approach, the fundamental gates are skillfully utilized with a coplanar layout based on a single cell not rotated. Furthermore, this work presents an enhanced 1-bit and 2-bit arithmetic logic unit in quantum dot cellular automata. The recommended design includes logic, arithmetic operations, full adder (FA) design, and multiplexers. Using the powerful simulation tools QCADesigner, all proposed designs are evaluated and verified. The simulation outcomes indicates that the suggested ALU has 42.48 and 64.28% improvements concerning cell count and total occupied area in comparison to the best earlier single-layer and multi-layer designs.Review Citation - WoS: 38Citation - Scopus: 50Inductive Power Transfer for Electric Vehicle Charging Applications: a Comprehensive Review(Mdpi, 2022) Aydin, Emrullah; Aydemir, Mehmet Timur; Aksoz, Ahmet; El Baghdadi, Mohamed; Hegazy, OmarNowadays, Wireless Power Transfer (WPT) technology is receiving more attention in the automotive sector, introducing a safe, flexible and promising alternative to the standard battery chargers. Considering these advantages, charging electric vehicle (EV) batteries using the WPT method can be an important alternative to plug-in charging systems. This paper focuses on the Inductive Power Transfer (IPT) method, which is based on the magnetic coupling of coils exchanging power from a stationary primary unit to a secondary system onboard the EV. A comprehensive review has been performed on the history of the evolution, working principles and phenomena, design considerations, control methods and health issues of IPT systems, especially those based on EV charging. In particular, the coil design, operating frequency selection, efficiency values and the preferred compensation topologies in the literature have been discussed. The published guidelines and reports that have studied the effects of WPT systems on human health are also given. In addition, suggested methods in the literature for protection from exposure are discussed. The control section gives the common charging control techniques and focuses on the constant current-constant voltage (CC-CV) approach, which is usually used for EV battery chargers.Article Citation - WoS: 6Citation - Scopus: 9A New Capacitive Coupler Design for Wireless Capacitive Power Transfer Applications(Elsevier - Division Reed Elsevier India Pvt Ltd, 2023) Erel, Mehmet Zahid; Bayindir, Kamil Cagatay; Aydemir, Mehmet TimurCapacitive power transfer (CPT) technology has become a promising alternative solution for wireless charging applications. This paper proposes a novel coupler design to form a resonant capacitor by inserting dielectric material between two bent metal plates for each primary and secondary circuit. The main purpose of the proposed coupler is to eliminate the external capacitors and solve the low coupling capacitance for CPT applications. A comparison to the conventional four-plate coupler is presented, which shows specifically higher coupling capacitance, lower required inductance, and lower cost. Finally, the effectiveness of the proposed coupler structure is verified by simulation and experimental results. (c) 2023 Karabuk University. Publishing services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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