Browsing by Author "Aydemir, M.T."

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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.
Citation - Scopus: 1
Dual 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.
Novel Designs of Fault-Tolerant Nano-Scale Circuits for Digital Signal Processing Using Quantum Dot Technology
(Elsevier B.V., 2026) Zohaib, M.; Navimipour, N.J.; Aydemir, M.T.; Ahmadpour, Seyed-Sajad
Digital signal processing (DSP) is a crucial engineering field dedicated to the processing and analysis of digital signals. DSP is particularly significant in critical sectors such as telecommunications, medical imaging, and secure communications, where it demands high accuracy, reliability, and real-time performance. In addition, the fault-tolerant (F-T) Arithmetic and Logic Unit (ALU) provides a fundamental building block of DSP architectures, enabling the accurate implementation of arithmetic and logical functions that are essential for advanced computational tasks. However, traditional ALUs were designed using complementary metal-oxide semiconductors (CMOS) and very large-scale integration (VLSI), which led to several challenges, such as high energy consumption, high occupied area, and slow operating speed. These limitations can be effectively addressed through nanotechnology, specifically quantum-dot cellular automata (QCA), which offers high speed, reduces occupying area, and has low power consumption. Accordingly, this paper proposes a QCA-based ALU circuit for DSP applications. The proposed designs integrate an F-T full adder (FA), a QCA-based multiplexer (MUX), and an ALU circuit to enhance performance and efficiency for DSP applications. The validation and verification of all suggested designs are performed using the simulation tool QCADesigner. © 2025 Elsevier B.V.