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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 Analysis of Optimization Algorithms Used in Permanent Magnet Synchronous Motor Control According to Different Performance Indices(Duzce University, 2024) Mert, Engin; Dursun, MustafaPermanent magnet synchronous motors (PMSM) can be produced at lower costs with new developments in magnet technology and are widely used in many industrial areas due to their low energy consumption. The widespread use of PMSM brings with it the requirement for high accuracy control performance. In order to achieve high performance accuracy, vector control technique is generally preferred. However, the parameter values of the controllers used in this technique are very important for motor performance. Tuning these parameters by optimization techniques instead of classical methods has become a popular topic. Nowadays, modern control methods show more effective control behavior than classical control methods, which has made the use of modern control methods widespread and studies on modern control methods have intensified. In this study, the analysis of different optimization algorithms used in the control of an PMSM according to their performance indices is investigated in Matlab-Simulink environment. As a result of simulation with different optimization algorithms under the same conditions, the analysis of optimization algorithms using different performance indices such as integral of the absolute value of the error (IAE), integral of the square of the error (ISE), Integral of the Square of the Error Multiplied by Time (ITSE), and Integral of the Absolute Error Multiplied by Time (ITAE) is carried out.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 Değişken Hızlı Rüzgâr Türbinlerinde Kullanılan Sürekli Mıknatıslı Senkron Generatörün Maksimum Güç İzleme Algoritması ile Vektör Kontrolü(Düzce Üniversitesi, 2017) Çiftçi, Ayşe; Dursun, MustafaRüzgâr 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 sağlanmıştır. Yapılan bu çalışmada generatör belirlediğimiz bir rüzgâr hızı ile optimum devir sayısıyla çalıştırılmış ve mevcutrüzgâr enerjisi potansiyelinden maksimum seviyede yararlanılmıştır.Öğe Design and implementation of the FPGA-based chaotic van der pol oscillator(Ceyhun YILMAZ, 2018) Dursun, Mustafa; Kaşifoğlu, ElifIn this study, the chaotic Van der Pol system was implemented for real-time chaos applications on FPGA chip. The chaotic Van der Pol system was also modelled numerically by using the Euler algorithm ODE (Ordinary Differential Equation) solver on Matlab. Numerical structure of the chaotic Van der Pol oscillator designed on Matlab was taken as reference for the design of FPGA-based chaotic Van der Pol oscillator unit. The chaotic Van der Pol system was coded in Very High-Speed Integrated Circuits Hardware Description Language (VHDL) with 32-bit IEEE-754-1985 floating point number standard. The designed chaotic Van der Pol system was synthesized in the Xilinx ISE Project Navigator program and was implemented on the Xilinx VIRTEX-6 chip family, XC6VLX75T device, FF784 package. The maximum operating frequency of the FPGA-based chaotic Van der Pol oscillator unit obtained from Place and Route processes was 498.728 MHz. Additionally, chip statistics of the FPGA-based Van der Pol oscillator were presented.Öğe Elektrik Dağıtım Şebekelerinde Rüzgar ve Güneş Enerji Santrallerinin Şebeke Entegrasyonunun DİGSİLENT'ta Esnek AC İletim Sistemleri (FACTS) ile İncelenmesi(Düzce Üniversitesi, 2024) Dinçer, Kumru; Dursun, MustafaGünümüzde, artan nüfus ve ilerleyen teknolojik gelişmeler enerji tüketimini artırmaktadır. Tüketim oranını koruyabilecek bir ölçekte üretilemeyen, yeniden oluşturulamayan veya yeniden kullanılamayan doğal kaynaklar genellikle sabit miktardadır ve doğanın yeniden oluşturabileceğinden çok daha hızlı tüketilir. Kısıtlı olmalarından dolayı dünya ülkelerini ekonomik, politik ve çevresel açıdan etkilemektedir. Bu bağlamda yenilenebilir enerji kaynakları fosil yakıtlar ve nükleer enerji kaynaklarına karşı güçlü bir alternatiftir ve ekonomik, politik ve çevresel açıdan problemleri en aza indirgemek için büyük bir potansiyele sahiptir. Rüzgar ve güneş enerjisi gibi yenilenebilir enerji kaynakları, çevre dostu olmaları ve sürdürülebilir enerji üretimine katkı sağlamaları açısından önemlidir. Son zamanlarda , talep edilen yükün sürekli değişmesi güç sistemlerinin daha karmaşık bir hal alması gibi nedenlerden dolayı yüksek güçlü santrallerin kurulumu hız kazanmıştır. Ancak, bu yüksek güçteki enerji kaynaklarının dağıtım şebekelerine entegrasyonu bazı zorlukları beraberinde getirmektedir. Bu makalede, Elektrik Dağıtım Şebekelerinde Rüzgar ve Güneş Enerji Santrallerinin Şebeke Entegrasyonunun DİGSİLENT'ta Esnek AC İletim Sistemleri (FACTS) ile İncelenmesi üzerine bir değerlendirme sunulacaktır.Öğe 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 Estimation of the Induction Motor Parameters Using Biogeography Based Optimization Method(Düzce Üniversitesi, 2013) Saraçoğlu, Bilal; Güvenç, Uğur; Dursun, Mustafa; Poyraz, Gökhan; Duman, SerhatIn this study, the determination of the electrical equivalent circuit parameters induction motors (IM) was carried out via Biogeography-Based Optimization (BBO). As an objective function in the algorithm, the equations of full-load torque, startup torque and breakdown torque of induction motors were used. The determination of the equivalent circuit parameters was performed with three different induction motors. Determination of the equivalent circuit parameters was performed for the induction motors which are 1.1kW and 0.37kW. The obtained results from the proposed approach are compared to obtained results from the Genetic Algorithm (GA).Öğe FARKLI NOKTALARDAKİ HAT KOPMALARININ GERİLİM KARARLILIĞI ÜZERİNDEKİ ETKİLERİ(Isparta University of Applied Sciences, 2019) Döşoğlu, Kenan; Dursun, Mustafa; Güvenç, UğurÇok baralı güç sistemlerinde gerilim-maksimum yüklenme ilişkisini belirlemek için birçok durum bulunmaktadır. Bunlardan biriside güç sistemlerinde hat kopma olayıdır. Bu çalışmada, IEEE 14 baralı güç sisteminde farklı noktalarda meydana gelen hat kopmalarının gerilim kararlılığı üzerindeki etkileri incelenmiştir. Hat kopmaları hatta bulunan kesicilerin belli bir süre devre dışı kalması olması olarak ele alınmıştır. 19 noktada meydana gelen hat kopmalarının gerilim-maksimum yüklenme parametresine etkileri gözlemlenmiştir. Ayrıca bu çalışmada bara gerilim profil değişimlerimde etkiler incelenmiştir. Yapılan bu çalışma sonucunda, hat kopmalarının farklı iletim hatlarında sistem yüklenme parametre değerini ve çalışma limitlerini azalttığı görülmüştür. Özelliklede yüklenme parametre değerini ve çalışma limitlerini kritik değere getiren durum iletim hattı 2-3 arasındaki hat kopması olmuştur.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 Improvement and Analysis of Phase-Phase Failure of Double Feed Induction Generator Using Maximum Power Monitoring Method(Düzce Üniversitesi, 2022) Dursun, MustafaThis study presents an analysis and control method for the doubly fed induction generator (DFIG) based wind energy production under the conditions of sudden grid voltage dips. The control aims are as follows: limiting the rotor currents, suppressing the fluctuations in the torque and suppressing the dc-link voltage fluctuation via the converter controls and ensuring maximum power point tracking. Rotor side converter (RSC) and grid side converter (GSC) structures have been given in the article and their limitations have been specified. Maximum power tracking control block has also been included in the system and its structure has been given. In this study; while RSC is controlled in a way that it will suppress the fluctuations in the torque and rotor currents, GSC is controlled in a way that it will suppress the fluctuations in dc-link voltage while taking the rotor power impact into consideration. Crowbar unit has been used in the rotor side to minimize these impacts. This unit is activated at the moment when a grid dip occurs and deactivates the RSC side. In this way, RSC side will not be affected by the high current fluctuations. The detailed results of the study were carried out in the MATLAB/Simulink environment,and the effectiveness of the proposed method was supported by the graphic results.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.
