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تاثير ظاهرة تارجح الطاقة الكهربائية على المرحلات المسافية == Power swing phenomenon and its effects on distance protection

Author name: عادل عناد شنان
Supervisor name: فلاح خير الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Higher Diploma
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:

اشتغال المحرك الحثي ثلاثي الطور في ظروف عدم الاتزان == Operation Of A Three Phase Induction Motor Under Unbalanced Conditions

Author name: محمود طه محمود
Supervisor name: فاروق خليل عموري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Al Mosul - College Of Engineering
Language: English
University location: Mosul

تصميم محولة التردد العالي والمحاثة لمحولات نوع (DC-DC) == Design of High Frequency Transformer and Inductor for DC-DC Converters

Author name: ريم فلاح حسن
Supervisor name: قاسم رشيد حميد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:

المعوضات الاستاتيكية المثلى في تحليل سريان الحمل بالاعتماد على خوارزمية مستعمرة النحل الاصطناعي المحدثة == Optimized of SVC in Load Flow Analysis Based on Modified Artificial Bee Colony Algorithm

Author name: هشام مؤيد نايف
Supervisor name: قاسم عبد الرزاق الانباري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

التقنيات المثلى لتخمين الحالة الاستاتيكية في نظم القدرة == Optimized Techniques for Static State Estimation in Power Systems

Author name: محمد فالح حسن
Supervisor name: قاسم عبد الرزاق الانباري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تعزيز وثوقية منظومة التوزيع باضافة وحدات توليدية موزعة باعتماد منهجية فروع المنطقة == Reliability Enhancement of a Distribution System by Injecting Distributed Generation Based on Zone Branches Methodology

Author name: غسان حرز عبدعلي
Supervisor name: وفاء سعيد مجيد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

دراسة منظومه فوتوفولتائيه مربوطة بالشبكة == Study of Grid-Connected Photovoltaic System

Author name: عماد عبد الرضا حميد
Supervisor name: قاسم عبد الرزاق علي الانباري | علي جعفر مهدي الحسيني
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تحري سريان القذرة المستمرة مع اضافه متسعات التوازي في شبكه التوزيع الكهربائية == Investigation of Continuation Power Flow and Capacitor Placement in Electrical Distribution System

Author name: علاء سعد حسين
Supervisor name: قاسم عبد الرزاق الانباري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

اداء السرعة للمسيطر الاتجاهي لمحرك تزامني بمغناطيس دائم مغذى بمحول مصفوفة غير مباشر == Speed Performance Based Vector-Controlled Permanent Magnet Synchronous Motor Fed by Indirect Matrix Converter

Author name: زينب محمود عبد
Supervisor name: تركي كحيوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تصميم ومحاكاة وبناء ملف حثي لاغراض التقسية السطحية لمسنن من الفولاذ الكاربوني CK-45 == Design, Simulation and Implementation of an Induction Coil for Surface Hardening of a Carbon Steel (CK-45) Gear

Author name: حمدان فراس صبيح
Supervisor name: عصام محمود عبد الباقي | صاحب محمد مهدي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تخمين خسائر المحرك الحثي ثلاثي الطور بواسطة طريقة العنصر المحدد == Losses Estimation of Three Phase Induction Motor by Finite Element Method

Author name: احمد نعيم عبد الصاحب
Supervisor name: عامر مجبل علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

تحليل وتصميم منظومة فوتوفولتائية تغذي مضخة ري ذات محرك حثي ثلاثي الطور باستخدام تقنية تضمين عرض النبضة للمتجه الفضائي == Analysis and Design of a Photovoltaic System Fed Three-Phase Induction Motor as Irrigation Pump Using Space Vector Pulse Width Modulation Technique

Author name: احمد ثائر محسن
Supervisor name: عصام محمود عبد الباقي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

توزيع المجال الكهربائي لمحولة 33\0،416 كيلوفولت وتقييم العوازل باعتماد طريقة العنصر المحدد == Electric Field Distribution of 33/0.416kV Transformer and Insulation Assessment Based on FEM

Author name: ابراهيم جليل جبر
Supervisor name: قاسم رشيد حميد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:

سماحية العطب للمبدلات في السيطرة المتجهه للمحركات التزامنية ذات المغناطيس الدائم == Inverter Fault Tolerant Operation Vector Control in a PMSM Drive

Author name: احمد جاسم جاسب
Supervisor name: Adel A. Obed | Ali K. Abdulabbas
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

تصميم ومحاكاة وتنفيذ مصدر قدرة بتردد عالي لتغذية فرن حثي == Design, Simulation and Implementation of a High Frequency Power Source Feeding an Induction Furnace

Author name: محمد حميد خزعل الفضلي
Supervisor name: Isam M. Abdulbaqi | Rabee' H. Thejel
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

توظيف تقنية SVPWM كفوئة والسيطرة التنبؤية على رباعي الارجل ثلاثي الطور == An Efficient SVPWM and Predictive Control of Four-leg Three-phase Voltage Source Inverter

Author name: رياض غانم عمر السعدي
Supervisor name: Rabee' Hashim Thejel
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

تحليل وتنفيذ الدوائر الفائقة الفوضوية اعتمادا على المصفوفات التناظرية المبرمجة حقليا == ANALYSIS AND IMPLEMENTATION OF HYPERCHAOTIC CIRCUITS BASED ON FIELD PROGRAMMABLE ANALOG ARRAYS (FPAAs

Author name: فاضل رحمة طاهر
Supervisor name: Ramzy S. Ali
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Doctorate
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

استخدام المتحكم الدقيق PIC 16F877A للسيطرة على سرعة عدد من محركات التيار المستمر == IC 16F877A MICROCONTROLLER BASED MULTIPLE DC MOTORS SPEED CONTROL

Author name: سرور مؤيد داود الصالح
Supervisor name: Rabee' H. Thejel
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University Of Basrah - College Of Engineering
Language: English
University location: Basrah
First pages:

مبدل فوتوفولطائي مايكروي احادي المرحلة نوع فلايباك المغذي للشبكة == Single Stage Grid - Connected Flyback Photovoltaic Microinverter

Author name: مصطفى عباس فضل
Supervisor name: تركي كحیوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Solar energy systems based on photovoltaic (PV) cells have attracted considerable interest in recent years due to their abilities of clear and seemingly limitless generated energy. Solar energy systems based on microinverter architectures are earning in publicity as they are less prone to shading and PV cell malfunction since each PV panel in the system has its own low power inverter.In this thesis two alternative modes of operation for the current source flyback microinverter are suggested : the discontinuous conduction mode (DCM), where a constant switching frequency (CSF) control method is applied, and the boundary conduction mode (BCM) between continuous conduction mode (CCM) and DCM, where a variable switching frequency (VSF) control method is used. These two control methods are analytically studied and compared in order to establish their advantages as well as their suitability for the development of an inverter for grid - connected PV applications.An optimum design methodology is developed, aiming for an inverter with the smallest possible volume for the maximum power transfer to the public grid and wide PV energy exploitation. The main advantages of the current source flyback microinverter are very high power density and high efficiency due to its simple structure, as well as high power factorregulation. The design and control methodology are validated by Powersimulation software (PSIM) and a laboratory hardware prototype is buildusing analogue and digital devices.The microcontroller type (PIC - 18F45K22) is used to implement perturb and observe (P&O) maximum power point tracking (MPPT) algorithm, and C language is used for programing the microcontroller. The simulation and experimental results are obtained to verify the proposed flyback microinverter.

مسيطر السرعة المثالي بالاعتماد على المتجه المسيطر لمسوق محرك التيار المستمر عديم الفرش == Optimal Speed Controller Based On Vector Controlled For A Brushless DC Motor Drive

Author name: مصطفى بشار عبد الملك
Supervisor name: تركي كحيوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: اصبحت محركات التيار المستمر عديمة الفرش شائعة جدا في الكثير من المجالات مثل في الصناعة والتطبيقات المنزلية؛ وذلك يعود الى مميزاتها العديدة على محركات التيار المستمر ذوات الفرش والمحركات الحثية؛ مثل كفائتها العالية, كثافة قدرتها العالية وحجمها الصغيرنسب | Brushless DC (BLDC) motors have become very popular in various fields such as in industry or home appliances; and that is due to their many advantages over the brushed DC motors and the induction motors such as their higher efficiency, high power density and respectively low volume. The traditional and most popular way to drive BLDC motor is by using six - step or trapezoidal technique. This technique however has several problems such as high torque ripple and high distortion in the currents. This thesis presents a BLDC motor drive system where the performance of the motor is improved on various aspects. The first aspect is to improve the speed response by using particle swarm optimization (PSO) technique to find the optimal parameters of the speed controller. The second aspect is to reduce the torque ripple associated with the traditional driving technique and also improve the dynamic response of the motor by using vector or field - oriented control to drive the motor. The third aspect is improving the total harmonic distortion (THD) of the voltages and currents by using multilevel inverter. The last aspect is driving the motor in sensorless operation for reduced cost and for applications where speed and position sensors cannot be used; this operation uses a flux - linkage observer with a phase - locked loop (PLL) structure to estimate the position and speed of the rotor. The control methods are modeled using MATLAB/Simulink program and the results show that the proposed systems has significant improvement in performance as compared with the traditional technique in terms of speed response, torque ripple and THD of the voltages and currents

خوارزمية فعالة للسيطرة على التردد اثناء تغيير الحمل في منظومة القدرة == An Effective Algorithm Of Load Frequency Control In Power System

Author name: ساره عباس حسين
Supervisor name: قاسم عبد الرزاق الانباري | عباس حسين مري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: في السنوات السابقة، زادت اهمية تحسين النظام الكهربائي. وان ثبوت التردد هو واحدة من الاشياء التي اثرت في خصائص النظام الكهربائي هي ثبوتية التردد. ولهذه الغاية، وحدة التوليد ملحقة بمسيطر اوتوماتيكي على التردد اثناء تغيير الحمل (LFC) لتنظيم القدرة الفعالة | In recent years, the importance of improving electrical power has been increased. One of the things influenced the characteristic of electrical power is the constancy of frequency. To this end, the generator unit is equipped with an automatic load frequency control (LFC) to adjust the active power produced and restore the frequency and tie line power exchange to their nominal value.The total model of a hybrid power system has a high dimension. The classical design tools are inadequate to cope with all dynamic features. Artificial intelligence techniques are found to be a promising tool to optimally minimize the transient dynamics and control efforts in a load frequency control. This thesis shows the execution of various Artificial Intelligence techniques on the tuning of PID controller in a load frequency control system to compute the PID controller. The techniques of genetic algorithm technique GA, particle swarm optimization PSO and artificial bee colony ABC were applied on four areas, six tie lines power system. The dynamic model was formulated in state variables form. A comparison between these techniques with different performance indices was presented. Results of the test system 1 and 2 were computed and compared. They showed that in test system 2 the load frequency controller can chase the load fluctuation in a short time. The IAE performance index gives an optimum dynamic performance using ABC. From the outcomes, they show that the test system 2 outputs regarding settling time and maximum overshoot were the best performances.

تصميم وبناء شاحنة بطاريات ذكية لمنظومة القدرة التي تعمل بالالواح الفوتوفولطائية == Design And Implementation Of An Intelligent Battery Charger For A Photovoltaic Power System

Author name: حسين سعود مرض
Supervisor name: عصام محمود عبد الباقي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: ان الهدف الرئيسي من هذه الرسالة هو استخدام الطاقة الشمسية لشحن بطاريات الرصاص الحمضية. تعتبر الشاحنة من اهم اجزاء المنظومة الشمسية وذلك لكون بطاريات الخزن هي الجزء الوحيد المحدود العمر منها. بطاريات التخزين ضرورية في جميع المنظومات الكهربائية الشمسية المس | The main goal of this thesis is to use the photovoltaic (PV) power to charge Lead - acid batteries. The charger is the most important part of the solar system because the only limited - age part of this system is the storage batteries. Storage batteries are essential in all standalone PV power systems. Their efficiency and life time affects significantly the overall PV system performance and economics. The storage battery's effectiveness depends on the charging process. Hence, this thesis deals with the study, simulation and design of an intelligent charger fed by solar system due to the latest technologies.The developed charging method entitled "the decreased charging current based on state of charge" is adopted in this thesis to charge a lead - acid battery. The principle of decreased charging current is to make the real charging current as close as possible to the maximum acceptable current. The advantage of this technique is to mix between the rapidity of charging and prevents of the overcharging and generates gases.The maximum power point tracking (MPPT) technique is adopted to maximize the PV output power, whatever of the temperature and irradiation conditions. The design considers different operating conditions of load, battery state of charge (SOC) and ambient effect in order to achieve the best charging condition of the batteries and to be compatible with the user requirements. The flexible, simple and cheap design is the objective of this charger.This PV charging system is composed of a solar panel, lead - acid batteries, buck converter as power charging circuit and a microcontroller as a control unit.The simulation results are achieved by using Simulink Proteus Isis Professional software. These results demonstrated the validity of the proposed charging technique. The battery charger prototype was tested and the obtained results agree with those obtained from the simulation

تصميم مسيطر وتحليل مولد حثي ثنائي التغذية مع سرعة الرياح المتغيرة == Controller Design And Analysis of Doubly - Fed Induction Generator With Variable Speed Wind

Author name: سراج منهل حمید
Supervisor name: حسین ثاني رشك
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: The Wind Energy is one of renewable energy and has become very popular and more attractive, as a result of many factors, some of these factors are, rising oil prices, worldwide awareness of the decline in world oil production, an raise in the price of natural gas. Therefore the need for renewable energy has been very important.This work deals with Doubly Fed Induction Generator (DFIG) based wind turbine. By studying the performance of DFIG connected to the grid with constant and variable speed wind. Three cases are considered and implemented using Matlab/Simulink. The first case is studied the effect of the size of capacitance at DC - bus with constant wind speed using space vector pulse width modulation (SVPWM) switching frequency 10KHZ and two values of capacitance.The second case is studied the effect of three phase fault condition, at 33KV line.The third case is that when the input is variable speed wind, the simulation results illustrate that is with variable wind speed and conventional values of PI controllers gains the generator system behavior show increasing in rising time and maximum overshoot of generated power, the control circuit is needed for optimization to improve the generated power. This optimization can be made by tuning the controllers parameters with optimal values, so the optimization is made by using Particle Swarm Optimization (PSO). The new optimal controllers parameters(PI - PSO) make the system more efficient from the results by reducing the ripple of DC - Voltage and maximum overshoot. And the generated active power get more smooth and rising time has been reduced.

تخمين حالة منظومة الشبكة العراقية استنادا الى تقنية امثلية الحشد الجزيئي == Iraqi Super Grid Network State Estimation Using Particle Swarm Optimization (PSO) Techniqu

Author name: انمار جاسم حميد
Supervisor name: افانين انور عبود
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: يعتبر تخمين حالة منظومات القدرة الكهربائية من الامور المهمة في تشغيل منظومات القدرة وخصوصا في حالة الحمل الزائد على شبكة الطاقة الكهربائية من خلال دوره في ضمان تشغيل اكثر اقتصاديا وامانا. تم في هذا العمل دراسة تخمين حالة منظومة القدرة واقتراح طريقة فعا | Due to the increasing stress on power system networks, state estimation recently became a main matter in the operation of power systems through its important role in ensuring the secure and economical operation of the power system. This work presents a study of a problem of power system state estimation, and proposes an efficient and reliable optimization approach to solve the power system state estimation problem. Two programs have been proposed and implemented in order to overcome the disadvantage of the classical optimization problem and search for the optimal solution of state estimation in power systems, the first program is a conventional state estimation program based on Weighted Least Square (WLS) method, and the second program is an intelligent program based on Particle Swarm Optimization (PSO) technique. All programs have been implemented using MATLAB and have been developed to solve the state estimation problem of the Iraqi Super Grid network (400kV). The proposed programs have been examined and tested on the 14 - bus IEEE and 30 - bus IEEE test standard system. The results were compared with those of the previous published papers. Then, the two programs were applied on the Iraqi Super Grid network (400 kV). The tests proved that the two methods are very efficient and suitable for on - line applications since they are concise and require few computations. The results show that the convergence of the (PSO) technique to the optimal solution is more accurate than (WLS) method. On the other hand, the PSO has an acceptable execution time compared with the freezing time of Iraqi Supervisory Control and Data Acquisition (SCADA) system approved by the Iraqi national grid.

اعادة تشكيل واضافة متسعات في قطاع توزيع كهرباء بغداد == Reconfiguration And Capacitor Placement In A Baghdad Distribution Sector

Author name: اديب ناصر حسين
Supervisor name: ثامر محمد عبد الوهاب
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: University of Technology - Electrical Engineering Department - Electrical Engineering Branch
Language: English
University location: Baghdad
First pages:
Abstract: يعد تخطيط شبكات التوزيع الكهربائية من الاولويات في الوقت الحاضر في العراق نظرا للزيادة الهائلة في الاحمال الكهربائية والتوسعات المفروضة على الشبكات نتيجة التوسع العمراني الكبير والسريع.يتحقق الاداء الامثل للشبكة بتقليل المفاقيد‘ تحسين الجهد (Voltage pr | Planning of electrical distribution networks is considered of highest priority at the present time in Iraq, due to the huge increase in electrical power demand and expansions imposed on distribution networks as a result of the great and rapid urban development. Optimum performance of the electrical network is achieved by reducing losses, improving voltage profile and alleviating overload for the system components. Such operation provides for energy salvage and redundancy in the electrical network. A planning method is proposed in this work to achieve optimum operating conditions of the network by combining the network reconfiguration in conjunction with the insertion of capacitors of optimal sizing and locations. This method is classified as a huge discrete non - linear optimization problem due to the large number of variables along with the presence of constraints and objectives. The power losses and voltages in buses for all cases are obtained by backward/forward load flow method. The proposed planning of distribution networks is based on the powerful and advanced CYMDist software as a tool for the simulation of distribution networks and performing the required analysis. CYMDist is practical and efficient analysis software, which is used by many electrical companies worldwide as well as the Iraqi ministry of electricity.Optimal network reconfiguration and capacitor placement methods are tested on IEEE 33 - bus and IEEE 34 - bus test systems, respectively. The results show excellent matching as compared with previous work mentioned in the literature.The work is implemented on an actual sector from Baghdad city distribution network, which is Al_Bayaa 11kV, 145 bus, four feeders system. The presented results show that minimum active power losses with improved voltage profile had been achieved. So the network can operate normally without any constraints violation.
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