24 results on '"Farsadi, Murtaza"'
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2. A non‐isolated single‐switch ultra‐high step‐up DC–DC converter with coupled inductor and low‐voltage stress on switch.
- Author
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Nadermohammadi, Ali, Maalandish, Mohammad, Seifi, Ali, Abolhassani, Pouya, Hosseini, Seyed Hossein, and Farsadi, Murtaza
- Subjects
DC-to-DC converters ,CLAMPING circuits ,ELECTROSTATIC discharges ,HIGH voltages ,POWER electronics ,LOW voltage systems ,VOLTAGE - Abstract
This paper presents a non‐isolated single‐switch ultra‐high step‐up (UHSU) DC–DC converter with a three‐winding coupled inductor (CI) which is utilized to achieve ultra‐high voltage gain with a small amount of duty cycle leading to low conduction losses of the power switch and higher efficiency. The voltage gain of the suggested UHSU converter is adjusted by two methods: the duty cycle of the power switch and the three‐winding CI turn ratio, therefore enhancing the design flexibility of the suggested converter. Due to the utilization of the passive clamp circuit in the structure of the proposed converter, it is possible to select a power switch with low voltage rated and small ON‐state resistance, further enhancing the converter efficiency. The operation modes are discussed in detail and to clarify the salient features of the proposed converter, a comparison with other configurations is provided. Finally, to accredit the performance of the proposed converter, a 150‐W laboratory archetype with an input and output voltage of 20 and 300 V, respectively, at 50 kHz switching frequency is fabricated. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Intelligent Fault Detection and Classification Schemes for Smart Grids Based on Deep Neural Networks.
- Author
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Alhanaf, Ahmed Sami, Balik, Hasan Huseyin, and Farsadi, Murtaza
- Subjects
ARTIFICIAL neural networks ,DEEP learning ,CONVOLUTIONAL neural networks ,FAULT location (Engineering) ,FAULT currents ,ELECTRIC potential measurement - Abstract
Effective fault detection, classification, and localization are vital for smart grid self-healing and fault mitigation. Deep learning has the capability to autonomously extract fault characteristics and discern fault categories from the three-phase raw of voltage and current signals. With the rise of distributed generators, conventional relaying devices face challenges in managing dynamic fault currents. Various deep neural network algorithms have been proposed for fault detection, classification, and location. This study introduces innovative fault detection methods using Artificial Neural Networks (ANNs) and one-dimension Convolution Neural Networks (1D-CNNs). Leveraging sensor data such as voltage and current measurements, our approach outperforms contemporary methods in terms of accuracy and efficiency. Results in the IEEE 6-bus system showcase impressive accuracy rates: 99.99%, 99.98% for identifying faulty lines, 99.75%, 99.99% for fault classification, and 98.25%, 96.85% for fault location for ANN and 1D-CNN, respectively. Deep learning emerges as a promising tool for enhancing fault detection and classification within smart grids, offering significant performance improvements. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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4. Control For a DC Micro grid Feeding Uncertain Loads in More Electric Aircraft.
- Author
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El Samarji, Abdel Rahman and FARSADI, Murtaza
- Subjects
AIRCRAFT industry ,MICROGRIDS ,PID controllers ,ENERGY consumption - Abstract
This project proposes an improved hybrid solar and wind with battery management system with specialized and accurate controllers developed using PID controller, the main concern of the project is developing an intelligent system which will work in synchronization with all other components of microgrid. The algorithm is developed in such a way that all sources should operate according to the variable load conditions. [1]We have proposed algorithm which is efficient in terms of making system reliable and stable, we have involved renewable resources as solar and wind energy for generation thus saving fuel consumption ultimately it affects economy of country. Simulation has been done which demonstrate the whole scenario of operation of all components of microgrid. Simulation model consists of model of renewable sources and battery with its controller grid and Load. To test the effectiveness of the system it is simulated on MATLAB. We can analyze the system effectiveness at different conditions namely as step changes in irradiance and several load condition. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
5. Robust optimal operation of smart distribution grids with renewable based generators.
- Author
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ZARE SEHSALAR, Omid, GALVANI, Sadjad, and FARSADI, Murtaza
- Subjects
ELECTRIC generators ,SMART power grids ,ENERGY storage ,FIX-point estimation ,REACTIVE power ,RENEWABLE natural resources ,POWER resources - Abstract
Modern distribution systems are equipped with various distributed energy resources (DERs) because of the importance of local generation. These distribution systems encounter more and more uncertainties because of the ever-increasing use of renewable energies. Other sources of uncertainty, such as load variation and system components' failure, will intensify the unpredictable nature of modern distribution systems. Integrating energy storage systems into distribution grids can play a role as a flexible bidirectional source to accommodate issues from constantly varying loads and renewable resources. The overall functionality of these modern distribution systems is enhanced using communication and computational abilities in smart grid frameworks. Robust operation of these systems is effectively taken into consideration to manage the uncertainty, which offers an explicit way to control the desired conservativeness. This paper presents an optimal operating program for smart grids equipped with wind generators, controllable distributed generators, energy storage systems, and reactive power compensators. In order to make the studies more practical, uncertainty about wind generators and grid loads is taken into account. Furthermore, the presented operating program is robust in various conditions, i.e. there is no need to change the operating program in a wide range of probable states. The point estimation method and fuzzy clustering method are used for probabilistic assessment of the distribution system in the presence of uncertainties. The IEEE 37-node standard test system, which is a highly unbalanced system, is selected for the case study and the results are discussed comprehensively. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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6. The Effect of Different Mppt on the Linear Load and Non-Linear Load in Pv System.
- Author
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SAEED, Halmat and FARSADI, Murtaza
- Subjects
IRRADIATION ,CLIMATE change ,COMPUTER algorithms - Abstract
The output power of a PV array is dependent on environmental factors such as solar irradiation and temperature. So, it has a non-linear I-V characteristic. Maximum Power Point (MPP) is a point on the I-V, P-V characteristic curve of a PV array where the PV device generates maximum output power. The location of MPP shifts as the climate changes. MPPT's aim is to keep the solar operating voltage as similar to MPP as possible under changing environmental conditions. They must run at their MPPT considering the inhomogeneous shift in environmental conditions in order to continuously gather the full power from the PV array. Here the most commonly used MPPT algorithms for PV applications are illustrated because they are easy to implement which are Perturb and Observe (P&O), Hill Climbing (HC) and Incremental Conductance (INC). In this paper, the applications of those three MPPT algorithms in PV systems at linear and nonlinear loads have been investigated. Comparative analysis has been done and the efficient one based on different testing scenarios has been determined based on output results. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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7. New Control Method For Dual Voltage Rectifier.
- Author
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OMAR, Rai Muhammad and FARSADI, Murtaza
- Subjects
ELECTRIC current rectifiers ,AC DC transformers ,VOLTAGE regulators - Abstract
In this paper, a novel AC-DC converter having dual stage voltage rectifiers and voltage summation architecture is designed. Voltages of the two DC-buses are added together at the output port via down-stream DC-DC transformers (DCXs). The DC output voltage is controlled by regulating the voltage of the adjustable DC-busses of the DV-rectifiers. Therefore, voltage regulation is not required for the DCXs, which can always operate at their highest operation point to guarantee maximum efficiency. As the voltage of the adjustable DC-buses are changeable, multilevel voltages can be obtained with the DVrectifier, which is benefit for reduction of switching losses and improvement of conversion efficiency. To achieve current regulation of AC input port and voltage regulation of the two DC-buses simultaneously, multi-mode operation and smooth mode transition strategies are proposed for the DV-rectifier. Operation principles, control strategies and characteristics of the DV-rectifier and DCX-based AC-DC converter are analyzed in detail. Feasibility and effectiveness of the proposed solutions are verified with experimental results. [ABSTRACT FROM AUTHOR]
- Published
- 2019
8. Extended Topology for a Boost DC–DC Converter.
- Author
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Shahir, Farzad Mohammadzadeh, Babaei, Ebrahim, and Farsadi, Murtaza
- Subjects
TOPOLOGY ,CASCADE converters ,ELECTRIC inductance ,PROTOTYPES ,HIGH voltages - Abstract
In this paper, a new structure for a nonisolated boost dc–dc converter is proposed. The proposed converter generates higher voltage gain than some conventional nonisolated boost dc–dc converters. In this paper, the voltage and current equations of the elements and voltage gain in continuous conduction mode and discontinuous conduction mode are extracted. Then, the critical inductance converter is extracted and the current stresses in the switches are calculated. To achieve high voltage gain, a generalized structure based on the proposed structure generates for dc–dc converters. Meanwhile, the root mean square current relations of devices are obtained for an extended structure. Finally, the results of PSCAD/EMTDC software and laboratory prototype are used to reconfirm theoretical concept. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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9. Comparing the Performance of ABC Algorithm and ACO Algorithm for Mobile Robot Path Planning in Dynamic Environments with Different Complexities.
- Author
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PURIAN, Fatemeh Khosravi and FARSADI, Murtaza
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MOBILE robots ,SWARM intelligence ,FUZZY logic - Abstract
Mobile robot path planning is an important branch of research in robotics science. in this paper, a new approach for solving mobile robot path planning in dynamic environments, based on the Swarm Intelligence Algorithms feature of an optimized ABC algorithm is proposed. The proposed ABC will optimize the fuzzy rules' parameters that have been used for On-line path planning in dynamic environments. In this study, there is a proposed evaluation function, accordingly, the found path is smoother and cleaner than the previous studies using other algorithms. In this research, the ABC and ACO are combined with fuzzy logic; two algorithms are compared with each other. The performance of both combined algorithms in the execution speed and the number of occurrences for obtaining the optimal path in various unknown environments have been evaluated using MATLAB simulation methods. The obtained results from the comparison of the performance of these two algorithms developed optimization algorithms for mobile robots' path planning. [ABSTRACT FROM AUTHOR]
- Published
- 2018
10. Voltage-Lift Technique Based Nonisolated Boost DC–DC Converter: Analysis and Design.
- Author
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Mohammadzadeh Shahir, Farzad, Babaei, Ebrahim, and Farsadi, Murtaza
- Subjects
ELECTRIC potential ,DIRECT currents ,CONVERTERS (Electronics) ,MEMBRANE potential ,DISCONTINUOUS functions ,ELECTRIC inductors - Abstract
In this paper, a new structure of nonisolated boost dc–dc converters based on voltage-lift technique is proposed. In comparison with conventional nonisolated boost dc–dc converters, the proposed converter generates higher voltage gain. In this paper, the relations between voltage and current of all elements in continuous conduction mode and discontinuous conduction mode are calculated as well as voltage gain in each mode. Then, the critical inductance and stress of switch current are extracted. Finally, the validity of given theories is examined by using the experimental results. [ABSTRACT FROM PUBLISHER]
- Published
- 2018
- Full Text
- View/download PDF
11. Analysis and design of voltage-lift technique-based non-isolated boost dc-dc converter.
- Author
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Shahir, Farzad Mohammadzadeh, Babaei, Ebrahim, and Farsadi, Murtaza
- Subjects
CASCADE converters ,ELECTRIC power factor ,PULSE width modulation ,ELECTROMAGNETIC interference ,KIRCHHOFF'S voltage law - Abstract
In this study, a new structure is proposed for non-isolated boost dc-dc converters using voltage-lift technique. The increasing voltage gain in the proposed converter is achieved step-to-step by a simple structure. In the proposed converter, there is a direct connection to an inductor in input side which provides free current ripple for the input source. Here, the proposed converter performance analysis and their relations are presented in continuous conduction mode and discontinuous conduction mode as well as voltage gain equations for each mode in detail. Then, switching current stress equations in each mode and critical inductance equations are extracted for design considerations. Finally, the carried theoretical analysis and satisfying operation of the proposed converter are verified via experimental results of laboratory prototype. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
12. A New Structure for Nonisolated Boost DC-DC Converter.
- Author
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Shahir, Farzad Mohammadzadeh, Babaei, Ebrahim, and Farsadi, Murtaza
- Subjects
CASCADE converters ,DIRECT currents ,ELECTRIC inductance ,ELECTRIC potential ,COMPUTER software - Abstract
In this paper, a new structure of nonisolated boost DC-DC converters is proposed. The operation of the proposed structure in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) is presented. Then, the critical inductance relation between CCM and DCM is obtained. The voltage gain and current stress of switches are calculated. Finally, the validity of the presented theoretical issues is reconfirmed by using simulation results obtained from PSCAD/EMTDC software. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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13. A Novel State-of-Charge Balancing Method Using Improved Staircase Modulation of Multilevel Inverters.
- Author
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Gholizad, Amin and Farsadi, Murtaza
- Subjects
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ELECTRIC inverters , *ELECTRIC charge , *ELECTRIC interference , *ELECTRIC batteries , *ELECTRONIC modulation - Abstract
Multilevel converters have received more attention recently. Multilevel converters can be used not only in high-voltage high-power applications, but also in energy storage systems, thanks to reduced harmonics and electromagnetic interferences. State-of-charge (SoC) balancing of the storage system cells within cascaded multilevel inverters, e.g., batteries, can be one of the challenges in practical applications. Different methods have been studied and reported in technical literature. However, the SoC balancing is still a challenging issue. In this paper, a new method is proposed to solve this problem by applying several clever but simple changes to the staircase modulation switching scheme without changing the output waveform properties. Validations for this simple method were performed through simulation and experimental prototype. Despite the simplicity of the method, the simulation and experimental results show that SoC balancing of the cells has significantly improved. [ABSTRACT FROM PUBLISHER]
- Published
- 2016
- Full Text
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14. Solving economic emission load dispatch problems using particle swarm optimization with smart inertia factor.
- Author
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Shahir, Farzad Mohammadzadeh, Farsadi, Murtaza, Zafari, Heydar, and Sadighmanesh, Abdolreza
- Published
- 2015
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15. Analyzing of coordinate operational of UPFC based on matrix converter and wind turbine generator under unbalanced load.
- Author
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Farsadi, Murtaza, Shahir, Farzad Mohammadzadeh, Nazarpour, Darioush, and Heris, Farhad Nazari
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- 2015
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16. Optimal placement and operation of BESS in a distribution network considering the net present value of energy losses cost.
- Author
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Farsadi, Murtaza, Sattarpour, Tohid, and Nejadi, Amin Yazdani
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- 2015
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17. Solving unit commitment and economic dispatch simultaneously considering generator constraints by using nested PSO.
- Author
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Farsadi, Murtaza, Hosseinnejad, Hadi, and Dizaji, Tohid Sattarpour
- Published
- 2015
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18. A new switched-capacitors boost inverter for renewable energy sources and POD control modulation.
- Author
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Kalashani, Mostafa Barzegar and Farsadi, Murtaza
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- 2014
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19. Modified parallel resonance type Fault Current Limiter.
- Author
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Farsadi, Murtaza, Dizaji, Tohid Sattarpur, and Kakesoury, Bijan
- Abstract
In this paper a new parallel resonance Fault Current Limiter (FCL) has been modified in a way that can sustain the magnitude of fault current and control it in a desired value. The operation is based on using parallel L&C resonance circuit with a resistor that reduces transient time and a pair of thyristors for controlling the value of fault current. Injected impedance can be controlled by changing firing angles of thyristors. Simulation with PSCAD/EMTDC software shows effectiveness of this topology for controlling fault current. [ABSTRACT FROM PUBLISHER]
- Published
- 2013
20. Application of PMSM for electric generation from ocean waves by EPEW.
- Author
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Enferad, Ehsan, Farsadi, Murtaza, and Enferad, Shirin
- Published
- 2011
21. Mitigation of SSR and LFO with a TCSC based-conventional damping controller optimized by the PSO algorithm and a fuzzy logic controller.
- Author
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GHAHRAMANI, Hasan, LAK, Akbar, FARSADI, Murtaza, and HOSSEINI, Hossein
- Subjects
SUBSYNCHRONOUS resonance ,FLEXIBLE AC transmission systems ,STEAM-turbines ,FUZZY logic ,PARTICLE swarm optimization ,ELECTRIC power systems ,THYRISTORS - Abstract
The subsynchronous resonance (SSR) phenomenon may occur when a steam turbine-generator is connected to a long transmission line with series compensation. Flexible AC transmission systems (FACTS) devices are widely applied to damp the SSR and low-frequency oscillation (LFO). A thyristor-controlled series capacitor (TCSC) is a commercially available FACTS device that was developed for damping the SSR and LFO. In this paper, 2 control methods for damping the SSR and LFO are added to the TCSC main controller in order to demonstrate that the SSR damping capability of the TCSC can be enhanced by proper modulation of the firing angle. The control methods are presented, namely the conventional damping controller (CDC) and fuzzy logic damping controller (FLDC). The particle swarm optimization (PSO) algorithm is used for searching optimized parameters of the CDC. Fast Fourier transform is carried out in order to evaluate the effect of the TCSC-based FLDC in damping the SSR and LFO. The study system was adopted from the IEEE second benchmark model by altering a part of the fixed series capacitor to the TCSC. The MATLAB/Simulink was used to verify the effectiveness of each control method. The simulation results show that the FLDC has an excellent ability in damping the SSR and LFO in the power system toward the CDC-optimized PSO algorithm. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
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22. Application of D-STATCOM to Improve the Power Quality and Transient Operation of Induction Motor.
- Author
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Sarijali, Amin and Farsadi, Murtaza
- Subjects
ELECTRIC power ,INDUCTION motors ,ELECTRIC potential ,ROTARY converters ,TRANSISTORS - Abstract
This paper discusses the operation of a distribution static compensator (D-STATCOM) based on three leg voltage source converter (VSC) in three. Phase four wire distribution systems. This device causes power quality improvement under unbalanced load, and regulates voltage when an induction Motor in system starts up. The proposed controller of D-STATCOM mitigates the neutral current and compensates harmonics current, reactive power, and balances the system. The insulated gate bipolar transistor (IGBT) based VSC is supported by a capacitor and is controlled for the required compensation of the load current. The performance of the three phase four wire D-STATCOM simulated in PSCAD/EMTDC soft ware. [ABSTRACT FROM AUTHOR]
- Published
- 2011
23. Multilayer architecture for voltage and frequency control in networked microgrid
- Author
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Hassan, Bilal, Farsadi, Murtaza, and Elektrik-Elektronik Mühendisliği Anabilim Dalı
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Elektrik ve Elektronik Mühendisliği ,Electrical and Electronics Engineering - Abstract
Uzaktan taşınması gereken artan güç talebi, Dağıtılmış Enerji Kaynaklarının (DER)hızlı ve etkili bir çözümünü oluşturur. Entegrasyon (DER'ler) yük ve Üretim tarafıarasındaki mesafeyi azaltabilir ve iletim hatlarını, Dağıtımı ve karbon emisyonunu enaza indirebilir. Bu tür zorluklar, her bir alt sisteme bağlı olan yükü ve ana şebekeyeverilen ekstra gücü veren farklı tipte (DER'ler) ağa bağlı mikro ızgaralar kullanılarakaşılabilir. Güç sisteminin hataları etkili bir şekilde algılamasına ve kontrol etmesineve kontrol algoritmalarıyla geçiş yapmasına izin veren mikrogrid, böylece tüm sistemkesintilerden kaçar ve güç geri yükleme sürelerini en aza indirir. Bu çalışmada dörtyüklü alt sistemimiz var. Bu çalışmada mikrogrid sistemi, fotovoltaik ve rüzgartürbininin ızgara tarafına bağlı olanı yüklemek için arzu gücü verdiği adalı moddaanaliz edilir. Bu romanda tüm mikrogrid, güç paylaşımı PID tarafından kontroledilen bataryaya bağlanmıştır. Her mikro ızgara yük ve ızgara ile bağlanır. Buromanda yenilenebilir enerji kaynakları, yük için arzu voltajı ve ana şebekeye kalangüç veren rüzgar türbini ve PV'dir. PID kontrol tekniği, çıkış voltajını bir arzu vestandart değerde kontrol edebilir. Hibrid AC mikro şebekenin tüm kontrol stratejileriSIMULINK / MATLAB [1] 'de simüle edilmiştir.Ağa bağlı bir mikro ızgara sistemi,ağa bağlı sistemin güvenilirliğini artırmak için bağlı mikro ızgaralar arasında gücüpaylaşma kapasitesine sahip bitişik bir mikro ızgara kümesidir. Ağa bağlı bir mikroızgara sisteminde, mikro ızgara, senkronize olmayan bir ızgara olan adalı mikroızgara gibi farklı yapılandırmalarda çalıştırılabilir. bağlı mikro şebeke, senkronizeızgara bağlantılı mikro şebeke ve ağ bağlantılı mikro şebeke The demand of growing power that requirements to be remotely transported creates afast and effective solution of Distributed Energy Resources (DERs). Integration(DERs) can reduce the distance between load and Generation side and decrease thetransmission lines, Distribution and the minimize carbon emission. Such challengescan be overcome by using networked microgrids, in which different type of (DERs)that give the power to load that connected to each subsystem and extra power givento main grid. Microgrid allowing the power system to sense and control the errorsefficiently and do switching with control algorithms so that whole system escapeblackouts and minimize the power restoration times. In this work we have foursubsystems with load. In this work microgrid system is analyzed in islanded mode inwhich photovoltaic and wind turbine give desire power to load that attached withgrid side. In this novel all microgrid are attached with battery whose power sharing iscontrol by PID. Each microgrid is connect with load and grid. In this novel therenewable energy resources are wind turbine and PV that given a desire voltage toload and the remaining power to main grid. The PID control technique can controloutput voltage at a desire and standard value.All control strategies of the hybrid ACmicrogrid are simulated in SIMULINK/MATLAB.A networked microgrid system isa cluster of adjacent microgrids that has capability to share power between theconnected microgrids in order to increase the reliability of networked system.In anetworked microgrid system, microgrid can be operate in different configurationslike islanded microgrid, an asynchronously grid-connected microgrid, asynchronously grid-connected microgrid, and networked microgrid 63
- Published
- 2020
24. Investigation of new control methods for hybrid AC/DC microgrids
- Author
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Khan, Ameer Abdullah, Farsadi, Murtaza, and Elektrik-Elektronik Mühendisliği Ana Bilim Dalı
- Subjects
Elektrik ve Elektronik Mühendisliği ,Electrical and Electronics Engineering - Abstract
Son olarak güç dönüştürücüler farklı türleri vardır. Bazı türlerde (örneğin ana supply), bir Güç Kaynağı birden fazla yük vermek için gereklidir. Bir güç Dönüştürücü planlarken birincil zorluklardan biri özellikle kullanılan yoğunluk switchmiktarı orta derecede büyük olduğunda etkinliğinigenişletmektir. Tek bir kaynaktan birkaç yük sağlanmış olsa da, anahtarlarda güç talihsizliği azaltılamaz durumda, bu noktada tek bir kaynak kullanarak normal kullanımı tamamen yapılabilir değildir. Talihsizliği azaltmak ve etkinliği artırmak için, öneri yeni bir yapı anahtarları azalmış sayıda verir. Bu teorinin kapsamı sadece dc-dc dönüştürücü ile sınırlı değildir, convertertek bir dc sou rce üç faz AC loadskaynağı içinayrıca tanıtıldı. Bu söylem, inverter kısmının geliştirilmiş bir eksikliği toleranslı düzenlemeiçerir. Oluşturulan Waveforms simulations are satisfactory sonuçlarının bir gösteri olarak dahil. droop control inverters paralel çalışma için bir well-known sistemidir. Her durumda, droop control sistemi Verim Empedans çeşitli ile Invertörler için yapısını değiştirir Aridurum ve sustainable canlılık sorunları have dağıtılmış yenilenebilir güç generation ve microgrids yükselen iyileştirilmesi gelişmiş endişeleri söylüyorlar. Yenilenebilir power kaynakları normalde dağınık olduğundan, power framework içindifficult manage sonsuz, henüz büyüyen, Aralıklı d alışılmış bir şekilde stributed power generation. Böylece d istributed generation kaynakları, load ve potansiyel olarak energy storages, bir sys denetlemek için tematik görünümalınmalıdır. Tüm bu dağıtılmış üniteleri bir arayagetirerek, dağıtım tarafında bir micro Güç Sistemi şekillenir, sher yerdemicrogrid atama. Distribution Güç Sistemi geçmişte bir kez sadece yük olarak kabul edilir göz önüne alındığında, microgrids geneasyon ve torage birimlerinin dahilçok temel düzeyde değişen kontrol ve conventional güç çerçevesinin operational structure. Tradyiyonal güç çerçevesi AC'ye bağlı olduğundan, microgrid'ler başlangıç zamanında normal olarak AC tabanlı olarak görülüyor. Üç fazlı AC taşıma commonly Ortak Kaplin PCC purpose olarakkullanılır. PCC normalde ana güç arabirimi between bir yardımcı program ağı ve Microgrid olarak ayarlanır.Paralel olarak ilişkili dağıtılmış enerji kaynakları güç dönüştürücüler doğru kontrol microgrid içinde yüksek kalibreli ve güvenilirlik canlılık kaynağı sağlamak için temel. Kontrol sarkması geniş AC adalı microgrids bu dönüştürücüler kontrol etmek için kullanılır. Kontrol droop ayrı ayrı, aktif ve reaktif güç paylaşımı neden frekans ve gerilim yönlendirir. Kontrol droop hassas bir aktif güç paylaşımı gerçekleştirir olmasına rağmen, voltaj regülasyon sorunları üreten reaktif güç paylaşımı nda imprecisions sunar. Bu şekilde, bu yazı denetimi takip olarak düzenlenir. İlk olarak, sunum bir microgrid içinde sarktıcı kontrolü ve güç dönüştürücüler içinuygulanmasının önemini tasvir eder. İkinci bölüm, güç paylaşımı konularının ele alınabilmesi için yazışma çerçevelerini kullanmanın önemini göstermektedir. Üçüncü alan güç paylaşımında bu denetimin kısıtlamalarını ortaya kaldırır. Dördüncü bölümde, improved droop kontrol teknikleri ile ilgili en son çalışmaları hızlı bir şekilde inceleyip inceliyoruz. Droop kontrol elektrik dağıtım şebekesi hiçbir yardım yoktur bağımsız microgrids jeneratörler arasında faiz gücü paylaşımı için anahtar çözümdür. Dinamik güç ayrışdırma ve alıcı güç kontrolü, gerilim kılavuzu, kontrol sallanan ve çerçeve gücü üzerinde Droop kazanımları incelenir. Sonraki Yük türü nde, çeşitli hatalar uygulanarak indüksiyon motor öznitelikleri izlenir. Simülasyon sonuçlarına göre, mikroızgaranın hızlı frekans yakınsaması nasıl başaracağına ve koruma çerçevesi çalışmasının çerçeve kararlılığını ne kadar hızlı iyileştirebileceğine hata yoğunluğu ve süre'nin karar vereceği gösterilmiştir. Mikroızgarada dengesiz doğrusalolmayan yük dikkate alınır ve yüklü denetleyicilerin harmonik distorsiyon, çerçeve dengeleme ve gerilim düzenlemesi üzerindeki etkileri gözlenir. Droop kontrol bir elektrik şebekesine bağlı bir senkron jeneratör sürüş bir prime mover bir hız kontrolörüdür. Sarkmaz hız kontrol modunda, jeneratör yüksizden tam yüke yüklendiğinde hız sabit bir yüzde azalır. Bu, paralel çalışma durumunda her yük için kararlı bir çalışma noktası sağlar. Örneğin, bir jeneratör yardımcı program ızgarası ile paralel ve bu yardımcı program ızgara jeneratör hızı ve voltaj belirleyecektir. Hız ayar noktası biraz daha düşük olduğunda, hız valisi frekansı düşürmek için bir girişim yakıt kaynağı tamamen kapatacaktır. Eğer ayar noktası biraz daha yüksekse, hız valisi yakıt kaynağını tamamen açacaktır. Bu sorunları çözmek için, biz sarkmak kontrolleri kullanın. Anahtar Kelimeler: PWM (Darbe genişliği Modülasyonu), Conventional droop kontrolü, Boost dönüştürücüler, Voltaj regülatö There are different types of power converters as of late. In some types for example main supply, it is needed to give more than one load from a power supply. One of the primary difficulties while planning a power converter is to expand its effectiveness particularly when the quantity of intensity switches utilized is moderately vast.While a few loads are provided from a single source, if the Power misfortune in the switches can't be diminished, at that point the normal utilization of utilizing a single source isn't entirely do able. To reduce the misfortune and Increase effectiveness, the proposal gives a novel structure diminished number of switches. The extent of thistheory isn't restricted to the dc-dc converter just, the converter to supply three phase C loads from a single dc source is additionally introduced. This discourse incorporates an improved deficiency tolerant arrangement of theInverter part. The created waveforms from the simulations are incorporated as a showing of satisfactory outcomes. droop control is a well-known system for the parallel operation of inverters. In any case, the droop control system changes its structure for Inverters with various kinds of yield impedance The arising concerns on condition and sustainable vitality issues have advanced the improvement of distributed renewable power generation and the rising of Microgrids. Since renewable power sources are normally dispersed, it is difficult for the powerframework to manage an endless, yet growing, intermittent distributed power generation in a customary manner. To viably oversee distributed generation sources, load, and potentially energy storages, a systematic view must be taken. By integrating all these distributed units together, a micro power system is shaped from the distribution side, subsequently the designation of microgrid. given that distribution power system is once in the past considered as load just, the inclusion of generation and storage units in microgrids is on a very basic level changing the control and operational structure of conventional power framework. As traditional power framework depends on AC, microgrids are viewed as normally AC based at beginning time. A Three-Phase AC transport is commonly utilized as the purpose of common coupling PCC. PCC is ordinarily set as the main power interface between a utility network and the microgrid. The proper control of the distributed energy resources power converters associated in parallel is basic to provide vitality supply of high caliber and dependability inside microgrid. The control droop is broadly used to control these converters in AC islanded microgrids. The control droop directs frequency and voltage which causes the active and reactive power sharing, separately. Even though the control droop accomplishes a precise active power sharing, it presents Imprecisions in reactive power sharing which produces issues in voltage regulation. In this way, this writing audit is organized as pursues. To begin with, the presentation depicts the significance of droop control and its application to power converters inside a microgrid. The second segment demonstrates the significance of utilizing correspondence frameworks to take care of power sharing issues. The third area introduces the restrictions of this control in power sharing. In the fourth segment, we quickly examine and dissect the most recent works about improved droop control techniques. Droop control is the key solution for sharing the interest power between generators in independent microgrids where there is no help from the electricity distribution grid. Droop gains on decoupling of dynamic power and receptive power control, voltage guideline, control swaying and framework strength are examined. In the subsequent Load type think about, by applying the various kinds of faults, induction motor attributes are watched. By simulation results it is demonstrated that the fault intensity and duration will decide how the microgrid accomplishes quick frequency convergence and how quick protection framework operation can improve framework stability. Imbalanced nonlinear load is considered in the microgrid and the impacts of installed controllers on harmonic distortion, framework equalization and voltage regulation are observed. Droop control is a speed controller of a prime mover driving a synchronous generator connected to an electrical grid. In the droop speed control mode, the speed willdecrease by a fixed percentage when the generator is loaded from no-load to full load. This provides a stable working point for each load in case of parallel operation. For example, a generator is paralleled with the utility grid and this utility grid will determine the generator speed and voltage. When the speed setpoint is slightly lower, the speed governor will fully close the fuel supply to lower the frequency. If the setpoint slightly higher, the speed governor will fully open the fuel supply. To solve these problems, we use droop controls.Keywords: PWM (Pulse width Modulation), Conventional droop control, Boost converters, Voltage regulator 82
- Published
- 2019
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