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دسترسی آزاد مقاله
1 - کنترل مستقیم توان در ژنراتورهای القایی توربین بادی با تغذیه دوگانه با استفاده از کنترلگر فازی
فرهاد بهادری جهرمیباد یک منبع مناسب و قدرتمند انرژی است. تولید توان در یک توربین بادی با سرعت متغیر، موضوعی جالب توجه است چراکه در سیستم¬های مبدل انرژی باد، حداکثر بهره¬برداری در هر سرعتی قابل دستیابی است. اما این سیستم برای محاسبه سرعت بهینه توربین نیاز به پارامترهای آن دارد. در این مقا چکیده کاملباد یک منبع مناسب و قدرتمند انرژی است. تولید توان در یک توربین بادی با سرعت متغیر، موضوعی جالب توجه است چراکه در سیستم¬های مبدل انرژی باد، حداکثر بهره¬برداری در هر سرعتی قابل دستیابی است. اما این سیستم برای محاسبه سرعت بهینه توربین نیاز به پارامترهای آن دارد. در این مقاله، یک روش کنترلی برای ردگیری نقطه توان بیشینه در سیستم مبدل انرژی باد ارائه می¬شود که به منظور شبیه¬سازی و طراحی از این روش و کنترل فازی به روش ممدانی استفاده شده است. در این مقاله، سیستم مبدل انرژی باد، مولد القایی دوسو تغذیه که با روتور و استاتور به شبکه متصل می¬شود، می¬باشد. ورودی سیستم کنترل، تفاضل سرعت مطلوب ژنراتور و سرعت واقعی آن است. سرعت مطلوب همان سرعت دورانی است که در آن ژنراتور توان بیشینه را از توربین بادی دریافت می¬کند. پس از انجام شبیه¬سازی ها و طراحی کنترل¬کننده فازی مناسب برای سیستم، مشخص شد که انتخاب نادرست یک پارامتر تأثیر نامطلوبی بر روند کنترل یک سیستم دارد. پرونده مقاله -
دسترسی آزاد مقاله
2 - بررسی پتانسیل انرژی باد جهت احداث نیروگاه برق بادی در استان کردستان با استفاده از توزیع ویبول
مطلّب بایزیدی بهرام قلیزاده محمد ادیب عباسیزمینه و هدف: انرژی باد یکی از مهمترین انرژی های قابل دسترس در سطح زمین می باشد و می تواند به انرژی الکتریسیته تبدیل شود. انرژی باد در مقایسه با انرژی سوخت های فسیلی به علت گستردگی، در دسترس بودن و پایداری، کاهش آلودگی هوا و اقتصادی بودن در ابعاد وسیعی مورد استفاده قرار چکیده کاملزمینه و هدف: انرژی باد یکی از مهمترین انرژی های قابل دسترس در سطح زمین می باشد و می تواند به انرژی الکتریسیته تبدیل شود. انرژی باد در مقایسه با انرژی سوخت های فسیلی به علت گستردگی، در دسترس بودن و پایداری، کاهش آلودگی هوا و اقتصادی بودن در ابعاد وسیعی مورد استفاده قرار گرفته است. در این مقاله هدف بررسی پتانسیل انرژی باد ایستگاه های سینوپتیک و اقلیم شناسی با استفاده از توزیع ویبول و آمارهای ثبت شده هواشناسی و با بکارگیری نرم افزار Windographer می باشد. روش بررسی: در این تحقیق 6ایستگاه سینوپتیک و یک ایستگاه اقلیم شناسی مورد بررسی قرار گرفت، داده های ساعتی سرعت و جهت باد ایستگاه های مورد مطالعه طی سالهای 2005 الی 2007 میلادی با تابع توزیع ویبول برازش و نمودارهای مربوطه رسم گردیدند. آنگاه با بهره گیری از نرم افزارهای متداول نمودارهای گلباد، سرعت باد، منحنی قدرت و در نهایت چگالی انرژی باد مناطق فوق برآورد گردید. همچنین نقشه پهنه بندی وضعیت بهره وری انرژی باد برای منطقه ترسیم گردید. بحث و نتیجه‌گیری: با توجه به اینکه چگالی قدرت باد در ایستگاه هزار کانیان در ارتفاع 50 متری،745 وات بر متر مربع می باشد، طبق جدول کلاس بندی اطلس انرژی باد آمریکا در کلاس 6 قرار داشته جزء مناطق پر باد و پارک بادی محسوب می گردد. بعد از آن ایستگاههای بیجار در شرق استان کردستان، با چگالی انرژی 301 وات بر متر مربع، ایستگاه زرینه در شمال استان کردستان با توان 290 وات بر متر مربع قرار می گیرند. سایر ایستگاههای موجود در استان دارای میانگین سرعت باد کمی بوده و توان انر‍ژی آنها کمتر از 200 وات بر متر مربع بودکه طبق استانداردهای بین المللی جزو مناطق کم باد محسوب شده و برای نصب توربین های بادی جهت استحصال برق مناسب نمی باشند پرونده مقاله -
دسترسی آزاد مقاله
3 - مروری بر چالش های فنّی اتصال سیستم های تبدیل انرژی باد به شبکه
مجید طاوسی احسان حیدریان فروشانی محمد حسن امیریون محسن پارسا مقدمتولید برق بادی سهم قابل توجهی در تولید جهانی برق دارد. نفوذ بالای نیروی باد چالش های عملیاتی و کنترلی بسیاری را به همراه دارد که بر قابلیت اطمینان و پایداری سیستم های قدرت تأثیر می گذارد. در این مقاله، چالش‌های فنّی گزارش‌شده ناشی از یکپارچه‌سازی سیستم تبدیل انرژی باد د چکیده کاملتولید برق بادی سهم قابل توجهی در تولید جهانی برق دارد. نفوذ بالای نیروی باد چالش های عملیاتی و کنترلی بسیاری را به همراه دارد که بر قابلیت اطمینان و پایداری سیستم های قدرت تأثیر می گذارد. در این مقاله، چالش‌های فنّی گزارش‌شده ناشی از یکپارچه‌سازی سیستم تبدیل انرژی باد در شبکه و روش‌های راه‌حل‌های پیشنهادی ارائه شده‌اند. معماری و اجزاء سیستم تولید باد در ابتدای این مقاله برای اهداف تحلیل و مطالعات پایداری مورد بررسی قرار می‌گیرند، سپس به چالش‌های فنی مختلف پرداخته می‌شود؛ هر چالش به صورت جداگانه، با تمرکز بر ادغام عمده انرژی باد در سیستم‌های قدرت مورد بحث قرار می گیرد. برخی راه‌حل‌ها، از جمله کد شبکه، فناوری‌های ذخیره‌سازی انرژی، استراتژی های مناسب کنترل و سایر روش‌های مورد استفاده برای کاهش اثرات یکپارچه‌سازی، نیز گنجانده شده‌اند. این بررسی، مقدمه‌ای از موضوعات ضروری برای یکپارچه‌سازی شبکه انرژی بادی و فناوری‌های موجود در جهت غلبه بر مشکلات مربوطه را فراهم می‌کند. پرونده مقاله -
دسترسی آزاد مقاله
4 - Design and analysis of hybrid systems solar, wind, osmotic for green plants using ant colony optimization algorithm
mohsen rasinezam hossein shayeghiNature has always proven that it is able to overcome its problems. However, human manipulation has led to environmental degradations. The dryness of a thousand-year Urmia Lake (a brinewater lake in Iran) is an example of environmental degradation that happened due to su چکیده کاملNature has always proven that it is able to overcome its problems. However, human manipulation has led to environmental degradations. The dryness of a thousand-year Urmia Lake (a brinewater lake in Iran) is an example of environmental degradation that happened due to successive droughts and construction of dams on the basin of this lake. This study examines methods for the revival of Urmia Lake,by making use of the water gathered behind the dam of Urmia Lake for agricultural purposes. This examination will be carried out by constructing several green plants around this lake over 20 years. The cost and amount of this construction project is analyzed with MATLAB software and by using the Ant Colony Algorithm. پرونده مقاله -
دسترسی آزاد مقاله
5 - Modeling and Stability Control of Wind Turbines Equipped with Synchronous Generator Using Static Synchronous Compensators
Reza Elmamouz Saeed Barghandan Mohsen EbadpourNowadays, among the renewable energy resources, wind energy is more economically viable than other new sources. To achieve the maximum power at different wind speeds, the turbine speed must be variable over a wide range. Electricity generation from wind is performed by چکیده کاملNowadays, among the renewable energy resources, wind energy is more economically viable than other new sources. To achieve the maximum power at different wind speeds, the turbine speed must be variable over a wide range. Electricity generation from wind is performed by different models of wind turbines with different generators. Due to the capabilities and advantages such as relatively high power density, low noise, high efficiency, high reliability and low maintenance costs, wind turbines equipped with permanent magnet synchronous generator (PMSG) are in increasing use. This paper presents a method for modeling and controlling the stability of PMSG-equipped power systems using static synchronous compensator (STATCOM). STATCOM is a static synchronous generator that is installed in parallel with the power grid and is used as a reactive power compensator which plays an effective role in voltage stability. The main goal of this study is to develop a reliable control strategy for wind farms and STATCOM to investigate the effect of reactive power losses under constant and sub-fault conditions. Furthermore, to increase the attenuation of the synchronous generator of single-machine system with infinite bus, STATCOM with PID controller is connected to the studied system to rise the dynamic stability of the PMSG based wind turbine. پرونده مقاله -
دسترسی آزاد مقاله
6 - A Comparison between OTC and P&O MPPT Control Methods Applied to Small Sized Wind Power Plants
Shirmohammadi ramin Ali ajamiThis paper provides a review of OTC and P&O MPPT controllers used for extracting maximum power from the wind energy systems using permanent magnet synchronous generators. Hence, the output power of wind energy system varies continually as wind speed changes, it is d چکیده کاملThis paper provides a review of OTC and P&O MPPT controllers used for extracting maximum power from the wind energy systems using permanent magnet synchronous generators. Hence, the output power of wind energy system varies continually as wind speed changes, it is desirable to determine the one optimal generator speed that ensures maximum energy yield. Thus, it is important to include a controller that can track the maximum peak regardless of wind speed. After explaining the basic concepts of OTC and P&O algorithms by implementing the algorithms on MATLAB -SIMULINK platform, a comparison has been made between the performance of these two MPPT algorithms on the basis of speed responses and ability to achieve the maximum energy. The priority of OTC algorithm is validated through analyzing simulation results پرونده مقاله -
دسترسی آزاد مقاله
7 - Application of Wind Energy in Urban Regional Planning Toward Ecological Sustainability(Case Study: Hashtgerd)
Mehrdad Mazloomi Azin FarzamThe remarkable development of sciences and technologies in the world of]o today has apparently brought mankind comfort and well-being, but it has also created new problems for humans including environmental pollution, widespread changes in world weather conditions, etc. چکیده کاملThe remarkable development of sciences and technologies in the world of]o today has apparently brought mankind comfort and well-being, but it has also created new problems for humans including environmental pollution, widespread changes in world weather conditions, etc. Fossil fuels cause numerous environmental pollutions. In other words, on the one hand poisonous gases enter the environment following the burning of fossil fuels, make breathing difficult for people, and pollute the environment. On the other hand, accumulation of these gases in the atmosphere prevents heat from escaping the earth, leading to temperature increases and widespread weather changes on earth called the greenhouse effect. The best way to stop the increasing trend in the concentrations of these poisonous gases is to use clean energies such as solar, wind, geothermal, and hydrogen energies instead of energy obtained from burning fossil fuels and thus to prevent environmental pollutions and the problems they caused. Since cities are the major consumers of energy, the need for utilizing clean energies (including wind energy) becomes more obvious because attention to the way energy is provided for cities, and the management of this energy, will influence the preservation of environmental health and the optimal use of energy resources of the earth. With this purpose in mind, optimizing energy consumption and utilization of new energies in cities will be taken into account from the very first in urban and regional planning. Through utilizing renewable energy in cities, we will achieve the above-mentioned goals, including reduced use of fossil energy and saving costs, and movement towards sustainable development and environmental health. In this project, the SWOT table of utilizing renewable energy was prepared for the region of Hashtgerd in order to analyze the available information and offer a strategy suitable for the subject of the research. Following that, a flowchart of studies and conditions required for utilization of this energy, with emphasis on ecological sustainability, was prepared to select suitable conditions for utilizing wind energy in cities. Important and effective indicators in these processes were then used to draw up tables for analyzing and estimating various conditions, amounts of generated electricity and reduction in emission. Moreover, using the KLIMM software, two regions around Hashtgerd were selected for establishing wind farms, taking the required areas for the farms and electricity consumption in Hashtgerd into consideration. Finally, a region south of Hashtgerd was judged the most suitable site with respect to location and other characteristics. پرونده مقاله -
دسترسی آزاد مقاله
8 - Assessment of Wind Energy Potential in Green-Mountain, Libya
Saad Alfalahi Walaa Mahdi Sabah Alwatar Mohammed Abdulhadi Aiman NouhAbstract:The annual capacity additions from renewable sources across the globe are growing at a rapid rate. Considering the efforts made by the international community to mitigate the effects of global warming, it is anticipated that it will continue to rise. As a resul چکیده کاملAbstract:The annual capacity additions from renewable sources across the globe are growing at a rapid rate. Considering the efforts made by the international community to mitigate the effects of global warming, it is anticipated that it will continue to rise. As a result, many nations across the globe are increasing their installed capacities by capitalizing on renewable resources, such as wind resources, in order to satisfy the rising demand for electrical power. In the first part of this study, a wind resource assessment is carried out to determine the wind potential at several different places in the Green Mountain Province, which is in the northeastern part of Libya. The sites with valuable annual wind speed frequency distribution and power density are then evaluated further to determine the technological features required for a wind farm to be constructed there. Wind turbines are chosen based on their power characteristic curves, and those curves must match the resultant wind distribution. To determine the system's financial and technical parameters, the data from the most prominent site are analyzed using two different processing technologies, both of which implement the Weibull Distribution Model. The findings indicate the possibility of implementation at least at two locations, with hub heights of 10 and 50 meters, respectively. پرونده مقاله -
دسترسی آزاد مقاله
9 - Experimental Investigation and Analysis of Manufacturing Wind Turbine Blades Produced by Hydroforming of Aluminum Alloy AA5754
Javad Shahbazi Karami Hamed Bakhtiarizade Mohsen ShahmoradiDevelopment of new technologies and combined with creativity and innovation, plays the fundamental role in developing of any community′s value. Thus, in this research the design and production of hydroforming device was introduced. One of the best and most efficie چکیده کاملDevelopment of new technologies and combined with creativity and innovation, plays the fundamental role in developing of any community′s value. Thus, in this research the design and production of hydroforming device was introduced. One of the best and most efficient technologies in the world of metal forming is wind turbine blade producing with hydroforming method which seems as an innovative manner in this field. The aim of this paper is design a small wind turbine blade. Application of this blade is for spaces with size limitation and building large-scale wind turbines. The first step of design process involves choosing and determining the airfoil blade wind turbine, distributing along the radius, angle of the airfoil and chording length distribution along the radius. Turbine blades modeled in CATIA software and transferred to finite element software, ABAQUS. Critical blades points under the hydrostatic pressure have been identified and outputs such as displacement, Von Misses stress obtained from hydroforming simulation process. In the final stage, after ensuring the software outputs blade has been modeled and produced. پرونده مقاله -
دسترسی آزاد مقاله
10 - هماهنگی روز-پیش عملیات خودروهای الکتریکی و منابع انرژی بادی در برنامه-ریزی امنیت مقید مشارکت واحدها (SCUC)
محمدجواد عبداللهی مجید معظمیدر این مقاله برنامه‌ریزی امنیت مقید مشارکت واحدها (SCUC) در حضور همزمان منابع انرژی بادی و خودروهای قابل اتصال به شبکه (PEV) مورد مطالعه قرار گرفته است. برنامه‌ریزی SCUC موجب فراهم آوردن یک جدول زمان‌بندی بهینه برای مشارکت واحدهای تولیدی با هدف حداکثر کردن امنیت و حداقل چکیده کاملدر این مقاله برنامه‌ریزی امنیت مقید مشارکت واحدها (SCUC) در حضور همزمان منابع انرژی بادی و خودروهای قابل اتصال به شبکه (PEV) مورد مطالعه قرار گرفته است. برنامه‌ریزی SCUC موجب فراهم آوردن یک جدول زمان‌بندی بهینه برای مشارکت واحدهای تولیدی با هدف حداکثر کردن امنیت و حداقل‌سازی هزینه و همچنین ارضای قیود شبکه و واحدها، در یک بازه زمانی، به عنوان یکی از زمینه‌های بسیار مهم تحقیقاتی در سیستم‌های قدرت است. امروزه ارتباط بین ذخیره کننده‌های انرژی و شبکه توجه بسیاری از پژوهشگران و بهره‌برداران شبکه را به خود معطوف کرده است. از جمله نوین‌ترین راه کارهای پیشنهادی برای جایگزینی سوخت‌های فسیلی، استفاده از انرژی خودروهای الکتریکی و انرژی بادی برای تامین توان است و در حال حاضر یکی از راهبردهای موثر برای بررسی اثرات ناشی از اتصال V2G و مزرعه بادی در بهره‌برداری بهینه از شبکه تولید، اجرای SCUC بر روی شبکه‌های قدرتی است که V2G و مزرعه بادی به شین‌های آن متصل‌اند. در این مقاله از روش تئوری بازیها برای حل مسئله روز-پیش مشارکت واحدها به صورت قطعی با در نظر گرفتن قید امنیت در حضور همزمان V2G و واحد بادی استفاده شده است. مسئله در دو سناریوی مختلف کنترل خودروها به دست بهره‌بردار و مصرف‌کننده در سه روز متفاوت با بارهای کم، متوسط و زیاد بررسی شده است. نتایج حاصل از مطالعات عددی نشان دهنده تاثیر حضور V2G و انرژی بادی بر کاهش هزینه‌های تولید و بهبود شاخص‌های بهره‌برداری سیستم قدرت می‌باشد پرونده مقاله -
دسترسی آزاد مقاله
11 - Maximizing Energy Storages Revenue Using Two-Level Model and Considering High Influence of Wind Resources and Market Balance Constraints
Mojtaba Najafi Sadegh DerakhshanIn this paper, a method is presented to maximize the revenue from price difference due to the presence of storage systems in the power system with a high penetration level of wind resources. To account for price changes due to the profitability of price differences, a t چکیده کاملIn this paper, a method is presented to maximize the revenue from price difference due to the presence of storage systems in the power system with a high penetration level of wind resources. To account for price changes due to the profitability of price differences, a two-level model is presented that maximizes the earnings from price differences and has been carried out at a low level of market-clearing procedure. The high level uses low-level production prices and adjusts the storage outputs that affect the low-level price. Conversion techniques have been used for single-line programming with respect to system balance constraints. In order to check the performance, the proposed method will be implemented on the IEEE 118 bus test network. Analyzing the results revealed that the proposed method has improved significantly compared with the traditional method and has been able to achieve higher arbitrage income. By applying a two-level model can soften clearly the marginal price by lowering the price at peak times and raising it at non-peak times and the storage’s charging power of the traditional model is much lower than that of the two-level model at low marginal hours. The results show that proposed algorithms can increase revenue from traditional to two-level models from $ 43280 to $ 65700, respectively. پرونده مقاله -
دسترسی آزاد مقاله
12 - A New Control Method for Smoothing PMSG-based Offshore Wind Farm Output Power
Navid Ghardash khaniNowadays, propagation of wind turbines make challenges to supply safe power to the grid. Because of wind speed changes, supervisors are concerned to wind turbines, be able to produce appropriate electric power during the wind speed changes. As a matter of fact, investor چکیده کاملNowadays, propagation of wind turbines make challenges to supply safe power to the grid. Because of wind speed changes, supervisors are concerned to wind turbines, be able to produce appropriate electric power during the wind speed changes. As a matter of fact, investors are mostly like to invest on offshore wind farms, because of their more stable and continuous wind speed rather than onshore ones. Although offshore wind farms are more reliable than onshore ones, their power control is a very important issue. In this paper a method is presented to control wind farms output power. This method is able to fix wind farm output power even during the wind speed changes. On the other hand by this method, the wind farm is able to operate such as a PV BUS. The proposed wind farm configuration and control system is validated by simulation on Matlab/Simulink software. We also formulate and model the wind turbine, VSC converters of HVDC link and the PMSG generator. Moreover they are modeled and simulated on d-q frame by MATLAB/Simulink. پرونده مقاله -
دسترسی آزاد مقاله
13 - Power Management and Dynamic Assessment of a Hybrid Wind, PV, and Battery Energy System
Mehdi Shafiee Saeed Jazebi Abbas-Ali Zamani Farzad KarimzadehThis paper presents power management and dynamic assessment of a small hybrid wind and photovoltaic (PV) energy system integrated with battery storage as the auxiliary power source. The system consists of a small wind turbine, photovoltaic cells, a battery, and an elect چکیده کاملThis paper presents power management and dynamic assessment of a small hybrid wind and photovoltaic (PV) energy system integrated with battery storage as the auxiliary power source. The system consists of a small wind turbine, photovoltaic cells, a battery, and an electric power converter. The load is supplied with the contribution of all renewable energy sources through an energy management system. Excess wind and photovoltaic energy is redirected to charge the battery. This hybrid energy system is stand-alone, reliable, and ultra-high efficient. A boost converter and a DC/AC inverter are utilized to produce a constant and reliable AC output voltage. The control strategy of voltage regulators is based on PI controllers that are tuned using the particle swarm optimization (PSO) algorithm. The dynamic response of the system to variations in the power source and the load is investigated. Simulation results show the strong self-adaption of the system to sudden operational variations. The combination of wind and PV sources is well-suited for the geographical regions with both windy and sunny days. This standalone system is ideal for suburban and rural areas remote from the electrical grids. پرونده مقاله -
دسترسی آزاد مقاله
14 - Capacity assessment of large-scale wind hydrogen production in very hot and humid region of Iran: A case study
Maryam Khalili GeshniganiIn recent years, hydrogen production from renewable energy has been attracting the attention of investors and politicians in the world. Although green hydrogen is still in its early stages in Iran, it has a high potential for development. Considering the importance of t چکیده کاملIn recent years, hydrogen production from renewable energy has been attracting the attention of investors and politicians in the world. Although green hydrogen is still in its early stages in Iran, it has a high potential for development. Considering the importance of the above-mentioned facts and Iran's very good wind potential, the present study was the first attempt to investigate hydrogen production from wind energy in the hot and humid climate zone of Iran. The investigated stations were 5 cities of Khuzestan province and 4 large scale wind turbines were selected to be evaluated. A numerical analysis on wind data and the best fit of the Weibull function for the stations were done. Based on the coefficients k and c of the Weibull function, the amount of hydrogen produced by electrolysis was calculated. The results of the study showed that the EWT 900-52 wind turbine produced the most wind electricity, an annual 4645.85 megawatt hours of wind electricity equivalent to 68.3 tons of hydrogen, in all the investigated stations. Moreover, the suitable station was found to be Dezful, which can produce 20.36, 16.45, 11.93 and 9.44 tons of hydrogen when using wind turbines EWT 52-900, AWE 54-900, AWE 52-750 and Hewind 43-600 respectively. پرونده مقاله -
دسترسی آزاد مقاله
15 - Power Frequency Control of the Grid using PMSG-Based Wind Farm Connected by HVDC Link Controlled by a New Method Based on Fuzzy Logic Controller
Ali Mastanabadi Gholamreza Aghajani Davar MirabbasiBy development of the power system in presence of the sustainable energies, the issue of grid frequency control is becoming more important. In traditional power systems, the frequency is mostly controlled by the hydroelectric power plants. This makes it troublesome in c چکیده کاملBy development of the power system in presence of the sustainable energies, the issue of grid frequency control is becoming more important. In traditional power systems, the frequency is mostly controlled by the hydroelectric power plants. This makes it troublesome in cases of dry spell or the absence of the hydro power plants. In this paper, a new method based on using wind farm equipped with PMSG, connected through HVDC link and controlled by fuzzy logic controller, is proposed to investigate the feasibility of using wind farms to improve the frequency control performance. The proposed system is tested on a four area grid and simulated in MATLAB /Simulink. It is concluded that the best performance, which is up to 26% improvement in settling time of the frequency deviation, is achieved by the proposed system in comparison to using the traditional control method and using wind farm controlled by conventional controllers. پرونده مقاله -
دسترسی آزاد مقاله
16 - Investigate and Improve the Reliability of Small Size Wind Energy Conversion Systems Connected to the Network
Omid FeizollahzadeWith the increasing expansion of electronic power converters in industrial applications, converter reliability.Power electronics have become very important. Electronic converters as intermediaries in systems Power generation from PV and Wind is also important in electri چکیده کاملWith the increasing expansion of electronic power converters in industrial applications, converter reliability.Power electronics have become very important. Electronic converters as intermediaries in systems Power generation from PV and Wind is also important in electrical drives and the aerospace industry. This article introduces comprehensive methods for assessing reliability. Methods reviewed Used for power extraction systems from WECS wind energy based on PMSG permanent magnet generator Placed. In these systems, it is usually a diode rectifier with a step-up converter and inverter on the side The network is exploited. The task of the inverter on the network side is to stabilize the DC link voltage and adjust the reactive power. The amplifier converter is also responsible for regulating the output voltage of the rectifier in order to obtain maximum power. in this Thesis uses both ordinary incremental inverter and interleave increment inverter and the capability Reliability is analyzed. پرونده مقاله -
دسترسی آزاد مقاله
17 - Maximum Power Point Tracking of Wind Energy Conversion System using Fuzzy- Cuckoo Optimization Algorithm Strategy
Mohammad Sarvi Mohammad ParpaeiNowadays the position of the renewable energy is so important because of the environment pollution and the limitation of fossil fuels in the world. Energy can be generated more and more by the renewable sources, but the fossil fuels are non-renewable. One of the most im چکیده کاملNowadays the position of the renewable energy is so important because of the environment pollution and the limitation of fossil fuels in the world. Energy can be generated more and more by the renewable sources, but the fossil fuels are non-renewable. One of the most important renewable sources is the wind energy. The wind energy is an appropriate alternative source of fossil fuel. The replacement rate of renewable energy to fossil fuels is rising, although the production cost is higher than fossil fuels. To further reduce cost of wind production, many methods have been proposed. One of the suitable approaches is the maximum power point tracking strategy. In this paper, a new intelligent maximum power point tracker called Fuzzy- Cuckoo strategy for small- scale wind energy conversion systems is proposed. The maximum power point tracker proposed uses measured wind speed to detect the maximum output power and its respective optimal rotational speed. The main contribution of the proposed approach is to exactly track the maximum power point, so the output power fluctuations captured by wind turbine are less than conventional approaches. The simulations are performed in MATAL/SIMULINK software. The superiority of the proposed approach is validated in two situations, low and rapid changes in wind speed. The maximum power point of wind energy conversion systems can be tracked by the proposed approach in any situation. The higher accuracy of the Fuzzy- cuckoo strategy than the conventional trackers is another advantage of the proposed approach. پرونده مقاله
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