Shahram Javadi
Electrical Engineering Department, I.A.U., Central Tehran Branch, Iran
[ 1 ] - Modeling and Improvement of Function of Solar Resources using Comparative Multipurpose Algorithm of PSO
In this article using comparative multi-purpose algorithm of PSO, optimum capacity of new resources and their spinning storage is defined. Spinning reserve requirements and optimized to maximize profit per unit is determined according to uncertainty. In fact by increasing the level of cost reservation, power supply increases but penalty of blackout decreases. In this paper in has been tried to ...
[ 2 ] - UPFC Siting and Sizing in Power Network Using Two Different Evolutionary Algorithm
In emerging electric power systems, increased transactions often lead to the situations where the system no longer remains in secure operating region. The flexible Ac transmission system (FACTS) controllers can play an important role in the power system security enhancement. However, due to high capital investment, it is necessary to locate these controllers optimally in the power system. FACTS...
[ 3 ] - Integrated Fuzzy Control of Temperature, Light and Emergency Conditions for Smart Home Application
Smart home is composed of several controllers with different plants in control. If each controller works independently, without considering the mutual effect of the others in the control process, the whole system could definitely not converge to an optimum desired status and may not ever reach the demanded condition. The function of different controller system may has conflict In some condition...
[ 4 ] - Dynamic Demand Management in an Airconditioner System by Frequency Control in Smart Grid Environment
As there is a rapid growth both in the number of power consumers and also the limitations energy resources, it is clearly accepted that the old version of power grid must change into smart grid from head to toe. One of the most important advantages of smart grid which makes it much more exclusive rather than other typical systems is the two-way connectivity between the utility and the costumers...
[ 5 ] - Risk Analysis and Economic Load Dispatch Evaluation of Network with High Wind Power Penetration
This study based on investigation for integration wind power into conventional power system with its impact on fossil fuel generators and their generation management. Wind power as environmental friendly energy source can reduce the operational cost of the system due to considering no cost for energizing the generator in comparing with fossil fuel generators. However due to unpredictable nature...
[ 6 ] - An Improved MPPT Method of Wind Turbine Based on HCS Method by Using Fuzzy Logic System
In this paper presents a Maximum Power Point Tracking (MPPT) technique based on the Hill Climbing Search (HCS) method and fuzzy logic system for Wind Turbines (WTs) including of Permanent Magnet Synchronous Generator (PMSG) as generator. In the conventional HCS method the step size is constant, therefor both steady-state response and dynamic response of method cannot provide at the same time an...
[ 7 ] - Comparing AODV and ADV Routing Protocols in Urban Environment
In vehicular ad hoc networks there is the ability to communicate between vehicles. This Communication which is wireless should be rapid and reliable. These networks have unique characteristic. This communication among vehicles has many advantages in safety and comfort applications. Since, the roads are always encountered to accidents and risks, using optimized tools could be useful in these sit...
[ 8 ] - Design of Maximum Power Point Tracking in Solar Array Systems Using Fuzzy Controllers
In recent year's renewable energy sources have become a useful alternative for the power generation. The power of photovoltaic is nonlinear function of its voltage and current. It is necessary to maintain the operation point of photovoltaic in order to get the maximum power point (MPP) in various solar intensity. Fuzzy logic controller has advantage in handling non-linear system. Maximum power ...
[ 9 ] - 3D Face Recognition using Patch Geodesic Derivative Pattern
In this paper, a novel Patch Geodesic Derivative Pattern (PGDP) describing the texture map of a face through its shape data is proposed. Geodesic adjusted textures are encoded into derivative patterns for similarity measurement between two 3D images with different pose and expression variations. An extensive experimental investigation is conducted using the publicly available Bosphorus and BU-3...
[ 10 ] - The Forecasting of Iran Natural Gas Consumption Based On Neural-Fuzzy System Until 2020
In this paper, an Adaptive-Network-based Fuzzy Inference System (ANFIS) is used for forecasting of natural gas consumption. It is clear that natural gas consumption prediction for future, surly can help Statesmen to decide more certain. There are many variables which effect on gas consumption but two variables that named Gross Domestic Product (GDP) and population, are selected as two input var...
[ 11 ] - Decreasing Starting Current for Separate Excited DC Motor using ANFIS Controller
Today, DC motors is still being used globally due to their easy speed controllability. In this article, an Adaptive Neuro-Fuzzy Inference System (ANFIS) controller is designed for DC motors. The main purpose of performing such task is to reduce the DC motor starting current and deleting the ripple current during starting time in considering control parameters such as: rise time, settling time, ...
[ 12 ] - Hybrid Fuzzy-PID Application in Boilers to Obtain Optimum Efficiency
Many real time processes have complex, uncertain and nonlinear dynamics. Boilers are nonlinear, time varying, multi-input multi-output (MIMO) systems, whose states generally vary with operating conditions. The major problem in controlling that system is that its drum water pressure and steam flow dynamics include an integrator that results a critically stable behavior. Conventional controller p...
[ 13 ] - Energy-Saving in Wireless Sensor Networks Based on Optimization Sink Movement Control
A sensor network is made up of a large number of sensors with limited energy. Sensors collect environmental data then send them to the sink. Energy efficiency and thereby increasing the lifetime of sensor networks is important. Direct transfer of the data from each node to the central station will increase energy consumption. Previous research has shown that the organization of nodes in cluster...
[ 14 ] - Evaluation of Optimal Fuzzy Membership Function for Wind Speed Forecasting
In this paper, a new approach is proposed in order to select an optimal membership function for inputs of wind speed prediction system. Then using a fuzzy method and the stochastic characteristics of wind speed in the previous year, the wind speed modeling is performed and the wind speed for the future year will be predicted. In this proposed method, the average and the standard deviation of in...
[ 15 ] - بهینهسازی ژنراتور القایی تغذیه دوگانه توسط روش اجزای محدود جهت بهبود عملکرد توربین بادی سرعت متغیر
In this paper, an optimized double-fed induction generator in wind power plants has been studied. The equations of optimal design is extracted and for evaluation of generator performance, a model has been presented and based on this model, the generator is optimized using finite element analysis (FEA). The aims of the optimizations are improvement of voltage and current waveform to could reach ...
[ 16 ] - Optimal Siting and Sizing of Hybrid Energy Systems (PV-WT-CHP) and Electric Vehicle Charging Stations Simultaneously based on Game Theory Approach
This paper proposes a methodology for practical siting and sizing of Hybrid energy systems (HESs) consist of: wind turbine (WT), photovoltaic (PV) and combined heat and power (CHP) units. In this method, the interaction of Plug-in Electric Vehicles (PIEVs) in the electric distribution system is considered. Electric Vehicle are seen to have some negative impacts on electric distribution system p...
[ 17 ] - مکانیابی خطای تکفاز به روش امپدانسی با بهرهگیری از روشهای شناسایی الگو
شبکه توزیع بهعنوان بخشی از ساختار کلی سیستمهای قدرت، آخرین حلقهی زنجیره تولید و انتقال انرژی محسوب میگردد. ازجمله مهمترین مسائل موجود در خطوط توزیع، مسئله بروز خطا است که با توجه به ساختار ذاتی شبکههای توزیع و انشعابات متعدد، مکانیابی آن اهمیت ویژهای دارد. روشهای امپدانسی بهعنوان معمولیترین روش برای مکانیابی خطا میباشد. این روش با مشکلاتی مانند چند پاسخی بودن و عدم تشخیص بخش خطا رو...
[ 18 ] - Double phase fault location in microgrids with the presence of electric vehicles and Distributed parameters line model
Nowadays, renewable energy is increasingly used in smart grids and microgrids to reduce the use of fossil fuels and improve network efficiency. Like all power system devices, microgrids are subject to transient and steady-state faults, such as short circuits. These faults impair reliability and consumer dissatisfaction. To accurately, automatically, and economically determine the location of a ...
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