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Öğe 3 Fazlı Asenkron Motorun Farklı Çalışma Koşulları Altındaki Tepkisinin Vektör Kontrol Tekniği ile Analizi(2020) Demirbaş, Muhammet; Dursun, MustafaAsenkron motorlar yaygın kullanım alanlarına sahiptir. Tasarımları güvenilir ve ucuz olmasıyla birlikte kontrolüzordur. Bu nedenle kontrol sistemini basitleştirmek amacıyla çeşitli sistemler geliştirilmiştir. Bu sistemlerdenbirisi de Vektör Kontrol (Alan Yönlendirmeli Kontrol) dür. Bu çalışmada 3 fazlı sincap kafesli bir asenkronmotorun doğrudan, kapalı çevrim, vektör kontrol tasarımı Matlab/Simulink ortamında yapılmıştır. Belirlenensabit bir referans hıza ulaşma durumu, belirli aralıklarla değişen referans hızlara ulaşma durumu, devreye yükalındığı durumda daha önce belirlenmiş referans hıza tekrar ulaşma durumu gibi durumlar incelenmiş veasenkron motorun referans hızlara rahatlıkla ulaştığı görülmüştür. Tasarımın doğruluğu ve işe yararlığıispatlanmıştır.Öğe THE ANALYSIS OF DIFFERENT TECHNIQUES FOR SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR(Univ Osijek, Tech Fac, 2015) Dursun, Mustafa; Boz, Ali FuatThis paper presents the use of proportional integral (PI), proportional integral derivative (PID) and fuzzy logic (FL) speed controller techniques in the permanent magnet synchronous motor (PMSM) drive. PI and PID controllers require precise linear mathematical model of the system. On the other hand, FL needs linguistic description of the system. The dynamic response of PMSM with the controllers was studied under different load disturbances. The effectiveness of the fuzzy logic controller was compared with the conventional PI and PID controllers. The FL controller responded better than conventional techniques under transient load conditions and also achieved faster settling response.Öğe Application of speed control of permanent magnet synchronous machine with PID and Fuzzy Logic Controller(Sila Science, 2012) Doğan, Metin; Dursun, MustafaPermanent magnet synchronous motors (PMSM), so that the production of high power density and high torque for industrial applications, more and side with a wide range of applications. In this study was presented in the MATLAB / SIMULINK simulation environment of Permanent Magnet Synchronous Motor. PMSM has been driven with insulated gate bipolar transistors (IGBT) inverter as producing Pulse Width Modulation (PWM). Proportional-Integral-Derivative (PID) and fuzzy logic controllers for speed control with graphical analysis of the differences between them were made. It has been entered reference input for speed control of PMSM and is examined in approach to the reference input of output speed. it was seen that Permanent magnet synchronous motor speed control application of fuzzy logic controller given better results according to the other two controller.Öğe Control of DC link Voltage Unit with Fuzzy Logic Controller in the Wind Farm(Ieee, 2013) Döşoğlu, Mehmet Kenan; Poyraz, Gökhan; Dursun, Mustafa; Öztürk, AliIn this study, the analysis of wind farm that has Double Feed Induction Generator (DFIG) with Fuzzy Logic Controller (FLC) in its operation connected to the grid is realized. In wind farm, DC voltage control is modeled with FLC. Bus voltages that are connected to grid, load bus voltage, DC link voltage, active and reactive power variations of wind farm are examined. Simulation results are demonstrated with figures by Fuzzy Logic Controller (FLC)-Proportion Integrate (PI) comparison. As a result of the studies, it is observed that FLC makes the system stable in a shorter time than PI.Öğe Değişken Hızlı Rüzgâr Türbinlerinde Kullanılan Sabit Mıknatıslı Senkron Generatör ile Maksimum Güç Noktası İzleme Algoritması(2017) Dursun, Mustafa; Çiftçi, AyşeRüzgâr türbininden maksimum güç çekme işlemi enerjinin verimli ve optimum kullanımı açısından önemli bir konudur. Bu çalışmada şebekeye bağlı rüzgâr türbininde en yüksek değerde güç elde edebilmek için maksimum güç nokta takibi (MGNT) arama algoritması geliştirilmiştir. Algoritma olarak rüzgâr türbininde kanat uç hız oranı yöntemi kullanılmıştır. Ayrıca alan yönlendirmeli vektör kontrol tekniği kullanılarak hem şebeke tarafı hem de generatör tarafı kontrol edilmiştir. Bu teknik ile sabit mıknatıslı senkron generatörde aktif ve reaktif güç, doğru akım (DA) bara gerilimi, generatör açısal hızı gibi değerlerin istenilen seviyede tutulması sağlanmıştırÖğe Enhancement Fractional-Order Sliding Mode Controller Design for Induction Motor Vector Control(Springer Int Publ Ag, 2023) Dursun, MustafaInduction motors play an important role in many fields where variable frequency drive is required. Therefore, it is very important to properly control the speed of an induction motor. Three-phase induction motors, especially squirrel-cage induction motors, are nonlinear machines due to the interaction of time-varying electrical and mechanical parameters, unknown load inputs and motor conditions. Although field-oriented control provides reasonable control performance, its performance decreases due to the fact that it is a linear control method (because it uses proportional-integral-differential (PID) controllers) because it cannot handle parameter changes and nonlinear dynamics. The low disturbance rejection capability of conventional PI controllers requires the use of advanced controller structures. In this study, a field-oriented control of an induction motor with a fractional-order sliding mode controller (FOSMC) is proposed. This structure is used instead of PI controllers in the field-oriented control. The performance analysis of the field-oriented control structure developed using FOSMC has been carried out under five different scenarios such as constant speed, variable speed, sudden load change and variable motor internal resistance and reactance. The same scenarios are compared in detail with the conventional PI and sliding mode controller (SMC). In the studies conducted in the MATLAB/Simulink environment, the FOSMC controller emerged as the frontrunner, exhibiting the most accurate speed response profile under complex scenarios, followed by the SMC and PI control approaches, respectively.Öğe Fitness distance balance-based Runge–Kutta algorithm for indirect rotor field-oriented vector control of three-phase induction motor(Springer Science and Business Media Deutschland GmbH, 2023) Dursun, MustafaIn this article, a study has been carried out to further develop the Runge–Kutta (RK) algorithm, which has a current and robust mathematical structure, using the fitness distance balance (FDB) method, and to test it for induction machine control. The RK algorithm was developed to avoid local optimum solutions, speed up convergence, and seek out the best possible solutions globally. Despite offering promising solutions, it is clear that this algorithm has its shortcomings, especially in solving high-dimensional problems like asynchronous motor control. In this study, the FDB method was used to build the guide selection process in the RK algorithm to reach the optimal solution. The developed FDB-based RK algorithm has been tested and verified on the CEC17 benchmark problems for 30-dimensional search spaces. The results of the proposed algorithm have been compared to the performance of the classical RK algorithm, and it shows that the changes in the design of the RK algorithm are successful. The proportional–integral–derivative (PID) parameters employed as a controller in the indirect rotor field-oriented control approach of a three-phase induction motor have then been optimized using the accuracy-proven algorithm. The FDB-RK, RK, genetic algorithm, particle swarm (PSO), differential evolution, artificial bee colony, and weighted average of vectors (INFO) algorithms have been used in this study with three different fitness functions and Wilcoxon and Freidman statistical analyses to find the best values for PID parameters. According to the data, FDB-RK-based PID controller has the best performance among the techniques. © 2023, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.Öğe Investigation with ZIP load Model of Voltage Stability Analysis in Wind Turbine integrated Power System(Ieee, 2018) Döşoğlu, Mehmet Kenan; Dursun, MustafaEffect on maximum loading parameter in power systems of the grid integrated wind turbine relation is important for voltage stability. In this study, the effects on static voltage stability of static impedance, current, and active power (ZIP) load modeling in wind turbine integrated to 11 buses power system are investigated. The impacts of ZIP load modelling on different parameter values were evaluated in terms of voltage-maximum loading parameters. Besides, voltage profile of 11 buses power system with wind turbine connected to different generator buses was examined. With use of wind turbine have shown that static voltage stability is more effective and maximum load parameter value is increased.Öğe LCL Filter Design for Grid Connected Three-Phase Inverter(Ieee, 2018) Dursun, Mustafa; Döşoğlu, M. KenanIn this study, LCL filter design was performed by simulating and theoretical analysis detail of a grid-connected system in MATLAB / Simulink environment. Inverters connected to the grid, filter is required as an interface between the inverter and the electric grid. The most effective filter for suppressing of the current harmonics occurring from the switching frequency injected into the grid is the LCL filter. The LCL filter must be designed appropriately to achieve high quality grid currents. LCL parameters are calculated for synchronized operation of the converter and grid. Simulation results were shown that, the LCL filter designed for harmonics has decreased in high degree harmonics in inverter output.Öğe NEW MODEL ADAPTIVE SYSTEM DESIGN FOR SENSORLESS SPEED CONTROL OF PMSM(Yildiz Technical Univ, 2017) Dursun, MustafaIn this study, simulation studies of permanent magnet synchronous motor (PMSM) based on model reference adaptive control method were performed using Matlab / Simulink package program. Instead of the PI controller traditionally used in the Model Reference Adaptive System (MRAS), system performance is examined using fuzzy logic and hierarchical fuzzy logic controllers (HFC). It is clearly seen in the simulation studies that the hierarchical controller is superior to the fuzzy logic controller by giving better dynamic response and less steady state error.Öğe Optimization of harmonics formed in asynchronous motors through SPWM and genetic algorithms(2011) Doğan, Metin; Dursun, Mustafa; Boz, Ali Fuat; Poyraz, GökhanThis study on the elimination of harmonics which form in three-phase asynchronous motors driven by inverters uses genetic algorithms (GA), one of the optimization methods, to suppress the undesired harmonics. By the use of Matlab/Simulink program, the study aims to identify the optimum switching angles in the optimum number. Optimum switching angles are the angles which make the first harmonic amplitude the biggest and the harmonic largest first-harmonic amplitudes which is to eliminated the smallest. The model has been developed by using sinusoidal pals width modulation (SPWM) technique in simulink environment. No technical help of this model using the (standard condition) the harmonic values, the values of the harmonic occured by using SPWM and the results obtained with GA is presented in tables and graphs and analyzed the differences between them. As a result, greatly reduced of harmonics clearly shown also with the help of graphs in the study made with GA. ©2011 Academic Journals.Öğe Reduction of Asynchronous Motor Loss by Heuristic Methods (PSO-GA)(Kaunas Univ Technology, 2012) Doğan, M.; Dursun, MustafaM. Dogan, M. Dursun. Reduction of Asynchronous Motor Loss by Heuristic Methods (PSO-GA) // Electronics and Electrical Engineering. - Kaunas: Technologija, 2012. - No. 1(117). - P. 53-58. The purpose of this article is to compensate the loss of performance caused by asynchronous motor feed. It was aimed to increase inverter output quality in order to reduce voltage instability at the current output and to minimize the harmonics of the inverters used to feed the motor. Many studies have made use of various algorithms to realize the aim mentioned in the article. Particle Swarm Optimization and Genetic Algorithm methods of optimization were used in this article to increase the current output quality, to minimize harmonics and to increase motor performance. Ill. 8, bibl. 15, tabl. 2 (in English; abstracts in English and Lithuanian).Öğe Response and Analysis of Permanent Magnet Synchronous Motor According to Different Reference Signals(2018) Döşoğlu, Mehmet Kenan; Dursun, MustafaPermanent magnet synchronous motors (PMSM) are frequently used in many applications, and so great importance in response to variable speed conditions. These engines, which are also used in electric vehicles, can be given to the best response in different road conditions. For this reason, a simulation is performed using vector control technique in MATLAB / Simulink environment. By giving different reference signals, the response of the motor is analyzed with current, speed and torque curves, and the study to be done in the future is provided with light.Öğe Sensorless control application of PMSM with a novel adaptation mechanism(Springer, 2018) Dursun, Mustafa; Boz, Ali Fuat; Kale, Murat; Karabacak, MuratThis paper proposes a novel adaptation design to replace the classical proportional-integral controller used in model reference adaptive system (MRAS) speed estimation. The proposed adaptation scheme is an association of two fuzzy units. The rules of each module were obtained by user experience and numerical data. In the traditional fuzzy logic controllers, the computational complication enhances with the attributes of the system variable quantities; the number of rules increases incrementally while the number of control variables increases. This negatively affects the response time of the system. This novel design was deduced to reduce the number of rules for a linear function of system variables. By this way, the response of the system became faster. Detailed simulation and experimental results were obtained for comparison of this novel method with traditional MRAS techniques. The results showed that the proposed method was faster in speed tracking and exhibited higher prediction accuracy and less oscillation than the traditional method. Thus, the proposed MRAS method was clearly seen to be applicable and reliable.Öğe Üç Fazlı Eviriciler İçin LCL Filtre Tasarımı ve Deneysel Analizi(2019) Fidan, İsrafil; Dursun, Mustafa; Fidan, ŞehmusHarmoniklere sebep olan eviriciler endüstride rüzgâr türbinlerinden, kesintisiz güç kaynaklarına kadar birçokalanda kullanılmaktadır. Harmonikler, sinüsoidal 3 fazlı AC formun bozulmasına sebep olmasının yanı sıragerilim düşümleri, kesicilerin hatalı çalışması, motorlarda verimin düşmesi/sarsıntılı çalışma, trafolardaizolasyon sorunları gibi sorunlara sebep olmaktadır. Bu problemleri çözmek adına eviriciler üzerinden güçtransferini en üst düzeye çıkarmak ve kaliteli enerji aktarımı için aktif veya pasif çeşitli filtreler kullanılmaktadır.Bu sebeple eviricilerin çıkışında L, LC, LCL, LLCL gibi pasif filtrelerin kullanılması kaçınılmaz olmaktadır. Buçalışmada 3 fazlı eviriciler için LCL filtre tasarımı gerçekleştirilmiştir. Böylece IEEE 519’da belirlenenharmonik sınırlamalarının altında 3 fazlı akım ve gerilim üretilerek eviricinin kendisinin sebep olduğuharmonikler azaltılacaktır.Öğe Üç Fazlı Gerilim Kaynaklı Evirici için SDGM, ÜHDGM ve HDGM Tekniklerinin MATLAB/SİMULİNK ile Karşılaştırmalı Analizi(2018) Dursun, Mustafa; Döşoğlu, KenanBazı güç elektroniği devrelerinin kontrolünde darbe genişlik modülasyon (DGM) teknikleri büyük önemtaşımaktadır. Mikroişlemci teknolojilerinin gelişmesi darbe genişlik modülasyon tekniklerinin çeşitlilikkazanmasına yol açmıştır. En yaygın kullanılan teknikleri sinüs DGM (SDGM), uzay vektör DGM (UVDGM),üçüncü harmonik DGM (ÜHDGM) ve histerisiz DGM (HDGM) olarak sıralayabiliriz. Bu tekniklerin bir birlerineolan avantaj ve dezavantajları bulunmaktadır. Bu çalışmada SDGM, ÜHDGM ve HDGM teknikleriMATLAB/SIMULINK ortamında üç fazlı gerilim kaynaklı bir eviriciye uygulanmıştır. 1 kW’lık bir omik yüküzerinde oluşan akım, gerilim grafikleri ile gerilimde meydana gelen toplam harmonik bozulumların(THB)karşılaştırılması yapılmıştır. Simülasyon sonuçlarından, HDGM yönteminde oluşan harmonik seviyenin IEEE 519standartlarına en uygun olduğu görülmüştür.