Tekgün, Burak

Profile URL
https://hdl.handle.net/20.500.12573/2735
Name Variants
Burak Tekgün Tckgun, Burak Tekgun, Burak
Job Title
Doç. Dr.
Email Address
burak.tekgun@agu.edu.tr
Main Affiliation
02.05. Elektrik & Elektronik Mühendisliği
Status
Current Staff
Website
ORCID ID
0000-0003-2720-8816
Scopus Author ID
55364451700
Turkish CoHE Profile ID
34FFD0DB79D49C7C
Google Scholar ID
ZufKQ0UAAAAJ
WoS Researcher ID
Z-1095-2018
Files
5264_Burak_Tekgün.jpeg (4.13 KB)
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Sustainable Development Goals

NO POVERTY1
NO POVERTY
0
Research Products
ZERO HUNGER2
ZERO HUNGER
0
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GOOD HEALTH AND WELL-BEING3
GOOD HEALTH AND WELL-BEING
0
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QUALITY EDUCATION4
QUALITY EDUCATION
0
Research Products
GENDER EQUALITY5
GENDER EQUALITY
0
Research Products
CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
1
Research Products
AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
12
Research Products
DECENT WORK AND ECONOMIC GROWTH8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
1
Research Products
REDUCED INEQUALITIES10
REDUCED INEQUALITIES
0
Research Products
SUSTAINABLE CITIES AND COMMUNITIES11
SUSTAINABLE CITIES AND COMMUNITIES
2
Research Products
RESPONSIBLE CONSUMPTION AND PRODUCTION12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
CLIMATE ACTION13
CLIMATE ACTION
0
Research Products
LIFE BELOW WATER14
LIFE BELOW WATER
1
Research Products
LIFE ON LAND15
LIFE ON LAND
0
Research Products
PEACE, JUSTICE AND STRONG INSTITUTIONS16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
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PARTNERSHIPS FOR THE GOALS17
PARTNERSHIPS FOR THE GOALS
0
Research Products
Documents

37

Citations

254

h-index

9

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Documents

35

Citations

189

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No records found in other affiliations.
Scholarly Output

36

Articles

13

Views / Downloads

323/220

Supervised MSc Theses

2

Supervised PhD Theses

2

WoS Citation Count

125

Scopus Citation Count

169

Patents

0

Projects

3

WoS Citations per Publication

3.47

Scopus Citations per Publication

4.69

Open Access Source

10

Supervised Theses

4

JournalCount
7th International Conference on Electric Power and Energy Conversion Systems -- NOV 12-14, 2024 -- U ARAB EMIRATES2
IEEE 3rd Global Power, Energy and Communication Conference (IEEE GPECOM) -- OCT 05-08, 2021 -- ELECTR NETWORK2
6th International Conference on Electric Power and Energy Conversion Systems (EPECS) -- OCT 05-06, 2020 -- ELECTR NETWORK2
7th Global Power Energy and Communication Conference-GPECOM-Annual -- JUN 11-13, 2025 -- Bochum, GERMANY2
6th Global Power, Energy and Communication Conference (GPECOM) -- JUN 04-07, 2024 -- Budapest, HUNGARY1
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Scholarly Output Search Results

Now showing 1 - 10 of 36
  • Conference Object
    Citation - Scopus: 1
    A Dithered Carrier Level Shifted Sine Pulse Width Modulation Technique for EMI Reduction in Cascaded H-Bridge Multi-Level Inverters
    (IEEE, 2025-06-11) Unal, Semih; Tekgun, Burak
    Growing utilization of high-power equipment, particularly in renewable energy systems and electric vehicle applications, has increased the popularity of multi-level inverters (MLI), owing to their capacity to produce high-fidelity sine wave output, compactness, and readily modifiable control devices. Electromagnetic Interference (EMI) is a prevalent problem associated with MLI topologies. Passive EMI filters can easily eliminate this problem. Still, the bulky components used inside these filters lead to a rise in the system's overall size, weight, and production cost. This work presents a novel modulation technique called dithered carrier level shifted sine pulse width modulation (DCLS-SPWM) with the target of reducing electromagnetic interference in cascaded H-bridge multi-level inverters (CHB-MLIs). This method reduces EMI by diffusing harmonics, typically concentrated in lower frequency bands, into higher stages. In the case of DCLS-SPWM, the carrier signal frequency is dithered over a time interval while maintaining the same overall number of switching events. This destabilizes the steady-state conditions intrinsic to the modulation, resulting in a more uniform harmonic distribution. In this study, a 9-level CHB-MLI simulation is built using MATLAB-Simulink, where each module receives a 100V DC input. The efficacy of the proposed DCLS-SPWM method on harmonic reduction is analyzed and validated.
  • Conference Object
    Citation - WoS: 5
    Citation - Scopus: 5
    Investigation of the Effects of Multi-Layer Winding Structures in Two Pole Synchronous Reluctance Machines
    (IEEE, 2021-10-05) Tekgun, Didem; Cosdu, Muhammed Muhsin; Tekgun, Burak; Alan, Irfan; Muhsin Cosdu, Muhammed
    In this paper, a comparative study is performed between single, various double, and triple-layer winding structures to investigate the effects of the winding MMF harmonics and end winding length on the two-pole synchronous reluctance machines (SynRM). A two-step design approach is used including winding and geometry optimization using multi-objective differential evolution (MODE) algorithm. In the first stage, a Pareto front is obtained which determines the number of turns for each coil group for all winding configurations. Later in the second stage, three results are selected from the first stage to perform a geometric optimization to distinguish the effects of the THD and end winding length on the synchronous performance of a 4 kW two-pole SynRM. For the same average torque output, efficiency, mass, and the torque ripple of the selected designs are investigated and compared. Based on the analysis, it is concluded that rather than focusing on shortening the end winding length, reducing the MMF harmonics have a more positive effect on the machine performance as reduced harmonics resulted in efficiency improvement up to 2 points and torque ripple is reduced up to 8 points while having similar motor mass.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Design and Real-Time Implementation of a Sliding Mode Observer Utilizing Voltage Signal Injection and PLL for Sensorless Control of IPMSMs
    (Elsevier - Division Reed Elsevier India Pvt Ltd, 2024-11) Ates, Ertugrul; Tekgun, Burak; Ablay, Gunyaz; Barut, Murat
    In this study, a sliding mode observer (SMO) based on high-frequency (HF) voltage signal injection and a phase-locked loop (PLL) is proposed for estimating the extended electromotive force (EEMF), rotor position, and rotor velocity of an interior permanent magnet synchronous machine (IPMSM). This approach addresses real-time estimation challenges associated with standard SMO and PLL at very low speeds and standstill. A reliable and accurate sensorless speed control system for IPMSM is then developed and implemented in real time using the proposed SMO and PLL, covering a wide range of speeds, including low-speed and standstill conditions. The SMO effectively estimates the EEMF, while the PLL extracts the rotor velocity and position based on these estimates. Compared to conventional SMO and PLL methods, real-time results from an 8-pole, 0.4 kW IPMSM demonstrate the superior efficiency of the proposed system.
  • Conference Object
    Citation - WoS: 5
    Citation - Scopus: 5
    Design and Control of a Single Phase DC/Rectified AC/AC Inverter for Low THD Applications
    (Institute of Electrical and Electronics Engineers Inc., 2018-10) Tekgun, Burak; Tekgun, Didem; Alan, İrfan; Badawy, Mohamed O.
    In this paper, a single phase DC/Rectified AC/AC (DC/RAC/AC) inverter is analyzed and compared to classical single phase PWM inverters. A traditional AC power supply (PS) system consists of a DC/DC converter, a cascaded H-bridge inverter, and a passive filter to generate the sinusoidal output voltage. The presented DC/RAC/AC inverter has a similar structure; however, the control of the cascaded units differ. The presented method generates rectified sine wave at the output of the DC/DC converter unit and the H-bridge inverter alternates the rectified sine wave to generate the full sine wave without having an additional output filter; hence, the switching losses at the H-bridge inverter is limited to the line frequency (50-60 Hz). Moreover, the bulk DC bus capacity at the output of the DC/DC converter is reduced significantly. Therefore, the power consumed by the passive elements are minimized. The circuit modes of operation are analyzed and the system is simulated in Matlab/Simulink environment for both traditional and proposed topologies. Results show that the proposed system is superior to the traditional one in terms of efficiency, generated THD with a simplified control structure, and it offers a reduced system size and cost. © 2019 Elsevier B.V., All rights reserved.
  • Research Project
    Alçaltıcı/Yükseltici Dc/Dc/Ac Eviricilerle Yüksek Performanslı Anahtarlamalı Relüktans Motoru Sürücü Sistemi Tasarımı Ve Gerçeklemesi
    (2021) Tekgün, Burak; Boynuegri, Ali Rifat; Yaşa , Yusuf; Alan, Irfan
    Anahtarlamalı relüktans motorları (ARM) 1800?lü yılların ortalarında keşfedilmesine rağmen, 1960?lı yıllarda yarı iletken anahtarların icat edilmesine kadar potansiyeli anlaşılamamış makinalardır. Modern yarı iletken teknolojisinin icadı ve gelişmesi ile birlikte ARM?lerin kullanımı yaygınlaşmıştır. ARM?ler basit yapıları, düşük üretim maliyetleri ve sağlamlıklarından dolayı birçok uygulamada tercih edilmişlerdir. Geleneksel olarak ARM, her bir faz için iki yarı iletken anahtar ve iki diyot kullanılarak oluşturulan sürücülerle sabit giriş gerilimi işlenerek, sırasıyla fazlar enerjilendirilmektedir. Faz sargılarındaki akımın enerjilendirilme esnasında yükselme süresi ve enerji kesildiği durumdaki akımın azalma süresi DC bara voltajına bağlıdır. Bu durum uygulamalarda enerjilendirme süresinin akımın sıfıra gitme süresi de göz önüne alınıp kısa tutulmasına, dolayısıyla komütasyon esnasında düşük tork üretimine, yüksek tork salınımına ve ortalama tork üretiminde azalmaya sebep olmaktadır. Bu projede, geleneksel sürücü topolojisinden farklı olarak ARM, bir DC/DC dönüştürücü ve tek fazlı bir tam-köprü evirici yardımı ile ideale yakın bir enerjilendirme akımı oluşturularak ARM daha yüksek performans ile kontrol edilmesi sağlanmıştır. Projede önerilen ARM sürücüsü her bir fazı bir DC/DC dönüştürücü ve bir tam-köprü evirici içeren modüler yapılı sürücülerden oluşmaktadır. Önerilen sürücü yapısını geleneksel ARM topolojilerinden ayıran özelliği DC/DC dönüştürücü devresidir. Burada makinanın faz sargılarının ihtiyaç duyduğu akım dalga şekli DC/DC dönüştürücü ile sağlanmaktadır. Tork üretiminin pozitif olabilmesi için stator ve rotor kutuplarının tam hizalandığı andan kısa bir süre önce negatif gerilim uygulanarak, faz akımının hızlı bir şekilde kesilmesi gerekmektedir. Bu durumda ise gerilim önerilen devredeki tam-köprü devresi yardımıyla tersine çevrilerek ve DC/DC dönüştürücünün çıkış gerilimi en yüksek seviyesine getirilmek suretiyle akımın hızlı şekilde sıfıra inmesi sağlanmıştır ve böylelikle makinanın performansı artmıştır. sadece DC/DC çevirici katında yüksek frekanslı anahtarlama olduğundan anahtarlama kayıplarının azalarak ve geleneksel topolojiye göre daha yüksek verim sağlanmıştır. Önerilen sürücü sisteminin AC motorların sürücüleri olarak yenilenebilir enerji sistemlerinde ara yüz elemanı olarak uygulanabilir olması, arıza giderme zamanında önemli ölçüde azalmaya neden olarak üretimdeki sürdürülebilirliğin artırılmasına destek olacağı öngörülmektedir.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Investigating the Tradeoff Between the MMF Distortion and End Turn Length of a 2-Pole Line Start SynRM Performance
    (Springer int Publ Ag, 2023-07-19) Tekgun, Didem; Cosdu, Muhammed M.; Tekgun, Burak; Alan, Irfan
    Conventional 2-pole AC machine windings have long end windings and generate harmonics, which increase losses and reduce torque density. This study investigates the performance tradeoff between the level of distortion (THD) in winding magneto-motive force (MMF) and end turn length on a 2-pole line start Synchronous Reluctance Machine (LS-SynRM) machine. A two-stage approach is used, winding and geometry optimization. Various multilayer winding configurations having unevenly distributed number of turns are investigated. First, the percentage of the turns in a coil group is optimized for minimum harmonics and end turn length for all structures. Second, geometric optimization is performed on selected winding configurations. Sixteen different configurations are optimized, and Pareto optimal solutions are obtained. Later, these solutions are graded with a new score-based assessment method to quantify the quality of the results. It is concluded that the designs having lower THD in winding MMF perform better than the designs with shorter end turns in terms of efficiency and torque density.
  • Article
    An Adaptation Mechanism of Model Reference Adaptive System Based on Variable Structure Control for Online Parameter Estimation of IPMSM
    (Wiley, 2026-01) Tekgun, Burak; Barut, Murat; Ates, Ertugrul
    This study introduces stator currents-based model reference adaptive system (MRAS) estimators that employ variable structured control (VSC) in the adaptation mechanism to enable the online estimation of stator resistance and permanent magnet (PM) flux in interior permanent magnet synchronous motors (IPMSMs). These MRAS estimators estimate stator resistance and PM flux by analysing the error between the stator currents measured as the reference model and the stator currents generated by the adaptive model. The performance of the proposed estimators is assessed through simulation studies. Furthermore, the proposed approach is compared to a conventional MRAS employing a fixed-gain proportional-integral (PI) controller. Simulation results and error analyses indicate that the VSC-based MRAS algorithms outperform traditional PI-based MRAS in terms of accuracy and reliability. Additionally, the proposed method eliminates the reliance on a fixed-gain PI controller, a common component in conventional MRAS systems.
  • Conference Object
    Citation - WoS: 2
    Citation - Scopus: 2
    LLC Laser Driver for Laser Wireless Power Transfer Application
    (IEEE, 2024-06-04) Yigit, Hayri; Boynuegri, A. Rifat; Tekgun, Burak
    Laser Wireless Power Transfer (LWPT) represents a cutting-edge technology for the long-range transmission of energy, distinguished by its capability for high-power transfer and adaptability to mobile applications. The effectiveness of this system is significantly tied to its transmitter component, comprising the Laser Diode (LD) and its associated driving circuitry. This research address to enhance system efficiency by introducing a specially designed LLC converter circuit, aimed at improving the overall efficiency of both the driver circuit and the LD driving process while minimizing current ripple. The proposed circuit underwent comprehensive simulation using MATLAB/SIMULINK, resulting in noteworthy outcomes that showcased an impressive efficiency of 98.44% within the LD driver circuit.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 3
    Investigating the Role of Stator Slot Indents in Minimizing Flooded Motor Fluid Damping Loss
    (MDPI, 2023-12-14) Tekgun, Didem; Tekgun, Burak
    This research examines how fluid damping loss affects the operation of a two-pole, 5.5 HP (4 kW) induction machine (IM) within the context of different slot opening configurations developed for downhole water pump applications. Since these motors operate with their cavities filled with fluid, the variations in fluid viscosity and density, compared to air, result in the occurrence of damping losses. Furthermore, this loss can be attributed to the motor's stator and rotor surface geometry, as the liquid within the motor cavity moves unrestrictedly within the motor housing. This study involves the examination of the damping loss in a 24-slot IM under different stator slot indentations. The investigation utilizes computational fluid dynamics (CFD) finite element analysis (FEA) and is subsequently validated through experiments. The aim of this work is to emphasize the significance of fluid damping loss in submerged machines. Results reveal that the damping loss exceeds 8% of the motor output power when the stator surface has indentations, and it diminishes to 3.2% of the output power when a custom wedge structure is employed to eliminate these surface indentations.
  • Conference Object
    Citation - WoS: 1
    Citation - Scopus: 1
    Four Switch Buck-Boost Quasi Single-Stage Inverter With Smooth Mode Transition Using Three-Mod Modulation Technique
    (IEEE, 2024-11-12) Keskinkilic, Ebubekir; Tckgun, Burak; Tekgun, Burak
    Quasi-single-stage inverters (QSSI) attract attention due to their simple structure and bidirectional operation capability. However, in the buck-boost DC-DC conversion stage, smooth transition, and efficient conversion cannot be achieved when the output voltage is close to the input voltage with the traditional two-mode control method. This is due to the pulse width ratio limitations, and non-idealities of the active and passive components. In this paper, a comparative analysis of the mode transition techniques in QSSIs is presented using methods available for DC/DC converters. The system efficiency and output voltage signal quality are selected as the performance metrics as they are important performance parameters in many applications. A 2kW QSSI is controlled using single-mode, two-mode, and three-mode modulation techniques. Simulation and experimental studies are conducted for validation. Based on these studies, it is concluded that the single-mode modulation technique performed the best in eliminating dead zone effects and reducing total harmonic distortion (THD), whereas the two-mode modulation technique achieved the highest system efficiency. The three-mode modulation has superior performance on dead zone elimination compared to the two-mode modulation and better system efficiency than the single-mode modulation method. Experimental results indicate that the three-mode modulation achieved an efficiency of 91.12% with a THD of 3.73%.