Relevant bibliographies by topics / Wind energy conversion systems (WECS)

Academic literature on the topic 'Wind energy conversion systems (WECS)'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Wind energy conversion systems (WECS).'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Wind energy conversion systems (WECS)"

1

Meenakshi, Ram, and Ranganath Muthu. "An Overview of Maximum Power Point Tracking Techniques for Wind Energy Conversion Systems." Advanced Materials Research 622-623 (December 2012): 1030–34. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.1030.

Full text
Abstract:
This paper presents on overview of maximum power point tracking (MPPT) techniques for different types of wind energy conversion systems (WECS). In order to obtain maximum power from the wind turbine (WT), variable speed wind energy conversion systems (VSWECSs) are preferred over constant speed wind energy conversion systems (CSWECSs).In VSWECS, the rotational speed of the turbine is varied by controlling the aerodynamic or electrical parameters of WECS to maintain a constant tip-speed ratio (TSR). This is called maximum power point tracking and different techniques are applied to WECS namely Squirrel Cage Induction Generators (SCIGs) based WECS, Permanent Magnet Synchronous Generators (PMSGs) based WECS.
APA, Harvard, Vancouver, ISO, and other styles
2

Shi, Yun-Tao, Yuan Zhang, Xiang Xiang, Li Wang, Zhen-Wu Lei, and De-Hui Sun. "Stochastic Hybrid Estimator Based Fault Detection and Isolation for Wind Energy Conversion Systems with Unknown Fault Inputs." Energies 11, no. 9 (August 24, 2018): 2227. http://dx.doi.org/10.3390/en11092227.

Full text
Abstract:
In recent years, the wind energy conversion system (WECS) has been becoming the vital system to acquire wind energy. However, the high failure rate of WECSs leads to expensive costs for the maintenance of WECSs. Therefore, how to detect and isolate the faults of WECSs with stochastic dynamics is the pressing issue in the literature. This paper proposes a novel comprehensive fault detection and isolation (FDI) method for WECSs. First, a stochastic model predictive control (SMPC) controller is studied to construct the closed-loop system of the WECS. This controller is based on the Markov-jump linear model, which could precisely establish the stochastic dynamics of the WECS. Meanwhile, the SMPC controller has satisfied control performance for the WECS. Second, based on the closed-loop system with SMPC, the stochastic hybrid estimator (SHE) is designed to estimate the continuous and discrete states of the WECS. Compared with the existing estimators for WECSs, the proposed estimator is more suitable for WECSs since it considers both the continuous and discrete states of WECSs. In addition, the proposed estimator is robust to the fault input. Finally, with the proposed estimator, the comprehensive FDI method is given to detect and isolate the actuators’ faults of the WECS. Both the system status and the actuators’ faults can be detected by the FDI method and it can effectively quantify the actuators’ fault by the fault residuals. The simulation results suggest that the SHE could effectively estimate the hybrid states of the WECS, and the proposed FDI method gives satisfied fault detection performance for the actuators of the WECS.
APA, Harvard, Vancouver, ISO, and other styles
3

Aguemon, Dourodjayé Pierre, Richard Gilles Agbokpanzo, Frédéric Dubas, Antoine Vianou, Didier Chamagne, and Christophe Espanet. "A Comprehensive Analysis and Review on Electrical Machines in Wind Energy Conversion Systems." Advanced Engineering Forum 35 (February 2020): 77–93. http://dx.doi.org/10.4028/www.scientific.net/aef.35.77.

Full text
Abstract:
Wind energy conversion systems (WECS) have developed rapidly in recent years in terms of capacity and wind turbines design. This development led to improve power quality, to reduce the costs and increase the energy yield. WECS are expected to be reliable, effective and more cost-competitive. A comprehensive analysis and review on electrical machines in WECS (viz., wind turbine generators) has been presented in this paper. Design, (dis) advantages, and market penetration of different wind turbine generators are analyzed and discussed. Some comparisons have been made on the permanent-magnet (PM) synchronous machines, promising generator for future wind turbines, especially offshore wind turbines.
APA, Harvard, Vancouver, ISO, and other styles
4

Li, T., A. J. Feng, and L. Zhao. "Neural Network Compensation Control for Output Power Optimization of Wind Energy Conversion System Based on Data-Driven Control." Journal of Control Science and Engineering 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/736586.

Full text
Abstract:
Due to the uncertainty of wind and because wind energy conversion systems (WECSs) have strong nonlinear characteristics, accurate model of the WECS is difficult to be built. To solve this problem, data-driven control technology is selected and data-driven controller for the WECS is designed based on the Markov model. The neural networks are designed to optimize the output of the system based on the data-driven control system model. In order to improve the efficiency of the neural network training, three different learning rules are compared. Analysis results and SCADA data of the wind farm are compared, and it is shown that the method effectively reduces fluctuations of the generator speed, the safety of the wind turbines can be enhanced, the accuracy of the WECS output is improved, and more wind energy is captured.
APA, Harvard, Vancouver, ISO, and other styles
5

Le, Xuan Chau, Minh Quan Duong, and Kim Hung Le. "Review of the Modern Maximum Power Tracking Algorithms for Permanent Magnet Synchronous Generator of Wind Power Conversion Systems." Energies 16, no. 1 (December 29, 2022): 402. http://dx.doi.org/10.3390/en16010402.

Full text
Abstract:
Wind energy conversion systems (WECSs) are considered green generators, environmentally friendly, and fully suitable energy sources to replace fossil energy sources. WECS’s output power is hugely dependent on the random nature of the wind. There are many solutions to improve the output power for WECSs, such as adjusting the profile of turbine blades, locating installation places, improving generators, etc. Nevertheless, maximum power point tracking (MPPT) algorithms for WECSs are optimal and the most effective because they are flexible in controlling different variable wind speeds and match all types of WECS. The parameters on the generator side control or the grid side control will be adjusted when MPPT algorithms are used, allowing the output power of WECSs to be maximized while maintaining stability in variable-speed wind. There are various MPPT algorithms, but the current problem is their efficiency and whether it requires deep knowledge to select the best MPPT solutions because each method has different advantages and disadvantages. This study has implemented an overview of modern maximum power tracking algorithms applied to permanent magnet synchronous generators in WECS with MPP methods based on speed convergence, efficiency, self-training, complexity, and measurement of wind parameters.
APA, Harvard, Vancouver, ISO, and other styles
6

Padmanathan, K., N. Kamalakannan, P. Sanjeevikumar, F. Blaabjerg, J. B. Holm-Nielsen, G. Uma, R. Arul, R. Rajesh, A. Srinivasan, and J. Baskaran. "Conceptual Framework of Antecedents to Trends on Permanent Magnet Synchronous Generators for Wind Energy Conversion Systems." Energies 12, no. 13 (July 8, 2019): 2616. http://dx.doi.org/10.3390/en12132616.

Full text
Abstract:
Wind Energy Conversion System (WECS) plays an inevitable role across the world. WECS consist of many components and equipment’s such as turbines, hub assembly, yaw mechanism, electrical machines; power electronics based power conditioning units, protection devices, rotor, blades, main shaft, gear-box, mainframe, transmission systems and etc. These machinery and devices technologies have been developed on gradually and steadily. The electrical machine used to convert mechanical rotational energy into electrical energy is the core of any WECS. Many electrical machines (generator) has been used in WECS, among the generators the Permanent Magnet Synchronous Generators (PMSGs) have gained special focus, been connected with wind farms to become the most desirable due to its enhanced efficiency in power conversion from wind energy turbine. This article provides a review of literatures and highlights the updates, progresses, and revolutionary trends observed in WECS-based PMSGs. The study also compares the geared and direct-driven conversion systems. Further, the classifications of electrical machines that are utilized in WECS are also discussed. The literature review covers the analysis of design aspects by taking various topologies of PMSGs into consideration. In the final sections, the PMSGs are reviewed and compared for further investigations. This review article predominantly emphasizes the conceptual framework that shed insights on the research challenges present in conducting the proposed works such as analysis, suitability, design, and control of PMSGs for WECS.
APA, Harvard, Vancouver, ISO, and other styles
7

Mwaniki, Julius, Hui Lin, and Zhiyong Dai. "A Condensed Introduction to the Doubly Fed Induction Generator Wind Energy Conversion Systems." Journal of Engineering 2017 (2017): 1–18. http://dx.doi.org/10.1155/2017/2918281.

Full text
Abstract:
The increase in wind power penetration, at 456 GW as of June 2016, has resulted in more stringent grid codes which specify that the wind energy conversion systems (WECS) must remain connected to the system during and after a grid fault and, furthermore, must offer grid support by providing reactive currents. The doubly fed induction generator (DFIG) WECS is a well-proven technology, having been in use in wind power generation for many years and having a large world market share due to its many merits. Newer technologies such as the direct drive gearless permanent magnet synchronous generator have come up to challenge its market share, but the large number of installed machines ensures that it remains of interest in the wind industry. This paper presents a concise introduction of the DFIG WECS covering its construction, operation, merits, demerits, modelling, control types, levels and strategies, faults and their proposed solutions, and, finally, simulation. Qualities for the optimal control strategy are then proposed. The paper is intended to cover major issues related to the DFIG WECS that are a must for an overview of the system and hence serve as an introduction especially for new entrants into this area of study.
APA, Harvard, Vancouver, ISO, and other styles
8

Nazir, Muhammad Shahzad, Yeqin Wang, Muhammad Bilal, Hafiz M. Sohail, Athraa Ali Kadhem, H. M. Rashid Nazir, Ahmed N. Abdalla, and Yongheng Ma. "Comparison of Small-Scale Wind Energy Conversion Systems: Economic Indexes." Clean Technologies 2, no. 2 (April 3, 2020): 144–55. http://dx.doi.org/10.3390/cleantechnol2020010.

Full text
Abstract:
Wind energy is considered as one of the most prominent sources of energy for sustainable development. This technology is of interest owing to its capability to produce clean, eco-friendly, and cost-effective energy for small-scale users and rural areas where grid power availability is insufficient. Wind power generation has developed rapidly in the past decade and is expected to play a vital role in the economic development of countries. Therefore, studying dominant economic factors is crucial to properly approach public and private financing for this emerging technology, as industrial growth and energy demands may outpace further economic studies earlier than expected. In this study, a strategy-focused method for performing economic analysis on wind energy based on financial net present value, levelized cost of energy, internal rate of return, and investment recovery period is presented. Numerical and simulation results depict the most optimal and economical system from a 3 and a 10 kW wind energy conversion system (WECS). Moreover, the aforementioned criteria are used to determine which WECS range is the most suitable investment with the shortest payback period. Finally, an economically viable and profitable wind energy system is recommended.
APA, Harvard, Vancouver, ISO, and other styles
9

Hao, Wang Shen, Feng Qin Li, Jie Han, Xin Min Dong, and Hong Chen. "Study on Fault Diagnosis Platform in Wind Energy Conversion Systems Based on JESS." Advanced Materials Research 230-232 (May 2011): 925–29. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.925.

Full text
Abstract:
There is a constant need for the reduction of operational and maintenance costs of Wind Energy Conversion System(WECS). The most efficient way of reducing these costs would be to continuously monitor the condition of these systems, which allows for early detection of the degeneration of the generator health, facilitating a proactive response, minimizing downtime, and maximizing productivity. Wind generators are also inaccessible since they are situated on extremely high towers.There are also plans to increase the number of offshore sites increasing the need for a remote means of WECS monitoring that overcomes some of the difficulties of accessibility problems. Therefore it is important of condition monitoring and fault diagnosis in WECS. The monitoring schemes of transfer its monitor status with JESS technology was put forward in this paper. A remote condition monitoring platform (RCMP) was designed and constructed in this project. And its result brings us an effective solution to deal with the WECS condition monitoring.
APA, Harvard, Vancouver, ISO, and other styles
10

B S, Yogananda, and Dr K. Thippeswamy. "Improvement of Power Quality in Wind Energy Conversion Systems." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 12–20. http://dx.doi.org/10.22214/ijraset.2022.41877.

Full text
Abstract:
Abstract: Wind Energy Conversion Systems (WECS) show variability in their output power as a result of changing their main engines (wind speed). This introduces a new grid uncertainty factor and poses many challenges to electricity system designers and utilities in terms of grid network integrity, ie power system security, power system stability and power quality. This paper discusses the various challenges of wind energy when integrated into the grid and identifies different mitigation strategies for its smooth integration. Keywords: wind energy system, Power quality, Power filters, Reactive Power, controllers
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Wind energy conversion systems (WECS)"

1

GuimarÃes, JÃssica Santos. "Wind energy conversion system connected to the grid." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16813.

Full text
Abstract:
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Este trabalho apresenta o desenvolvimento de um sistema de conversÃo de energia eÃlica (WECS - Wind Energy Conversion System) com gerador sÃncrono de imà permanente (PMSG - Permanent Magnet Synchronous Generator) operando com velocidade variÃvel. O circuito de processamento de energia à dividido em dois estÃgios. No estÃgio AC-DC, uma topologia boost bridgeless trifÃsica unidirecional absorve a energia fornecida pelo gerador e injeta no link DC. Neste conversor, a tÃcnica de autocontrole permite a extraÃÃo de corrente com baixa taxa de distorÃÃo harmÃnica (THD â Total Harmonic Distortion) e alto fator de potÃncia. AlÃm disso, um algoritmo de rastreamento do mÃximo ponto de potÃncia (MPPT - Maximum Power Point Tracking) determina a velocidade de rotaÃÃo do gerador que irà garantir o ponto adequado de operaÃÃo. Este modo de operaÃÃo à mantido enquanto a potÃncia disponÃvel for menor que a potÃncia nominal do conversor. Caso contrÃrio, o algoritmo de MPPT à desabilitado e uma malha de controle de potÃncia mecÃnica garante a condiÃÃo nominal de potÃncia. No estÃgio de conversÃo DC-AC, um inversor trifÃsico ponte completa, cujo controle à baseado na teoria das potÃncias instantÃneas, provà energia à rede elÃtrica cumprindo com as exigÃncias normativas. Uma anÃlise teÃrica completa à apresentada assim como os resultados de simulaÃÃo considerando o protÃtipo com a potÃncia nominal de 6 kW equivalente a turbina eÃlica utilizada. Resultados experimentais satisfatÃrios sÃo apresentados para uma potÃncia de 3 kW: o rendimento do sistema completo à superior a 90%; a corrente que circula no gerador apresenta THD de aproximadamente 2,6% e fator de potÃncia de 0,942; e a corrente injetada na rede elÃtrica possui THD de 1,639% e fator de potÃncia de 0,994.
This master thesis presents the development of a Wind Energy Conversion System (WECS) with Permanent Magnet Synchronous Generator (PMSG) operating at variable speed. The energy processing circuit is divided into two stages. In the AC-DC stage, an unidirectional three-phase bridgeless boost topology absorbs the energy supplied by the generator and injects it into the DC link. In this converter, the self-control technique allows the current extraction with low THD and high power factor. Furthermore, a - Maximum Power Point Tracking (MPPT) determines the rotational speed of the generator that will ensure the proper operating point. This mode of operation is maintained while the available power remains lower than the converter rated power. Otherwise, the MPPT algorithm is disabled and a mechanical power control loop ensures the rated power condition. On the DC-AC conversion stage, a three-phase full-bridge inverter, whose control is based on the theory of instantaneous power, provides energy to the grid complying with regulatory requirements. A complete theoretical analysis is presented as well as the simulation results considering the prototype with a rated power of 6 kW equivalent of wind turbine used. Satisfactory experimental results are shown to an output of 3 kW: the efficiency of the total system is above 90%; the current through the generator has a THD of about 2.6% with a power factor of 0.942; moreover, the current injected into the grid has a THD of about 1.639% and a power factor of 0.994.
APA, Harvard, Vancouver, ISO, and other styles
2

Dalala', Zakariya Mahmoud. "Design and Analysis of a Small-Scale Wind Energy Conversion System." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/51846.

Full text
Abstract:
This dissertation aims to present detailed analysis of the small scale wind energy conversion system (WECS) design and implementation. The dissertation will focus on implementing a hardware prototype to be used for testing different control strategies applied to small scale WECSs. Novel control algorithms will be proposed to the WECS and will be verified experimentally in details. The wind turbine aerodynamics are presented and mathematical modeling is derived which is used then to build wind simulator using motor generator (MG) set. The motor is torque controlled based on the turbine mathematical model and the generator is controlled using the power electronic conversion circuits. The power converter consists of a three phase diode bridge followed by a boost converter. The small signal modeling for the motor, generator, and power converter are presented in details to help building the needed controllers. The main objectives of the small scale WECS controller are discussed. This dissertation focuses on two main regions of wind turbine operation: the maximum power point tracking (MPPT) region operation and the stall region operation. In this dissertation, the concept of MPPT is investigated, and a review of the most common MPPT algorithms is presented. The advantages and disadvantaged of each method will be clearly outlined. The practical implementation limitation will be also considered. Then, a MPPT algorithm for small scale wind energy conversion systems will be proposed to solve the common drawback of the conventional methods. The proposed algorithm uses the dc current as the perturbing variable and the dc link voltage is considered as a degree of freedom that will be utilized to enhance the performance of the proposed algorithm. The algorithm detects sudden wind speed changes indirectly through the dc link voltage slope. The voltage slope is also used to enhance the tracking speed of the algorithm and to prevent the generator from stalling under rapid wind speed slow down conditions. The proposed method uses two modes of operation: A perturb and observe (PandO) mode with adaptive step size under slow wind speed fluctuation conditions, and a prediction mode employed under fast wind speed change conditions. The dc link capacitor voltage slope reflects the acceleration information of the generator which is then used to predict the next step size and direction of the current command. The proposed algorithm shows enhanced stability and fast tracking capability under both high and low rate of change wind speed conditions and is verified using a 1.5-kW prototype hardware setup. This dissertation deals also with the WECS control design under over power and over speed conditions. The main job of the controller is to maintain MPPT while the wind speed is below rated value and to limit the electrical power and mechanical speed to be within the system ratings when the wind speed is above the rated value. The concept of stall region and stall control is introduced and a stability analysis for the overall system is derived and presented. Various stall region control techniques are investigated and a new stall controller is proposed and implemented. Two main stall control strategies are discussed in details and implemented: the constant power stall control and the constant speed stall control. The WECS is expected to work optimally under different wind speed conditions. The system should be designed to handle both MPPT control and stall region control at the same time. Thus, the control transition between the two modes of operation is of vital interest. In this dissertation, the light will be shed on the control transition optimization and stabilization between different operating modes. All controllers under different wind speed conditions and the transition controller are designed to be blind to the system parameters pre knowledge and all are mechanical sensorless, which highlight the advantage and cost effectiveness of the proposed control strategy. The proposed control method is experimentally validated using the WECS prototype developed. Finally, the proposed control strategies in different regions of operation will be successfully applied to a battery charger application, where the constraints of the wind energy battery charger control system will be analyzed and a stable and robust control law will be proposed to deal with different operating scenarios.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
3

Yunus, A. M. Shiddiq. "Application of SMES Unit to improve the performance of doubly fed induction generator based WECS." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/1450.

Full text
Abstract:
Due to the rising demand of energy over several decades, conventional energy resources have been continuously and drastically explored all around the world. As a result, global warming is inevitable due to the massive exhaust of CO2 into the atmosphere from the conventional energy sources. This global issue has become a high concern of industrial countries who are trying to reduce their emission production by increasing the utilization of renewable energies such as wind energy. Wind energy has become very attractive since the revolution of power electronics technology, which can be equipped with wind turbines. Wind energy can be optimally captured with wind turbine converters. However, these converters are very sensitive if connected with the grid as grid disturbances may have a catastrophic impact on the overall performance of the wind turbines.In this thesis, superconducting magnetic energy storage (SMES) is applied on wind energy conversion systems (WECSs) that are equipped with doubly fed induction generators (DFIGs) during the presence of voltage sags and swells in the grid side. Without SMES, certain levels of voltage sags and swells in the grid side may cause a critical operating condition that may require disconnection of WECS to the grid. This condition is mainly determined by the voltage profile at the point of common coupling (PCC), which is set up differently by concerned countries all over the world. This requirement is determined by the transmission system operator (TSO) in conjunction with the concerned government. The determined requirement is known as grid codes or fault ride through (FRT) capability.The selection of a SMES unit in this thesis is based on its advantages over other energy storage technologies. Compared to other energy storage options, the SMES unit is ranked first in terms of highest efficiency, which is 90-99%. The high efficiency of the SMES unit is achieved by its low power loss because electric currents in the coil encounter almost no resistance and there are no moving parts, which means no friction losses. Meanwhile, DFIG is selected because it is the most popular installed WECS over the world. In 2004 about 55% of the total installed WECS worldwide were equipped with DFIG. There are two main strategies that can be applied to meet the grid requirements of a particular TSO. The first strategy is development of new control techniques to fulfil the criterion of the TSOs. This strategy, however, is applicable only to the new WECS that have not been connected to the power grid. If new control techniques are applied to the existing gridconnected WECSs, they will not be cost effective because the obsolete design must be dismantled and re-installed to comply with current grid code requirements. The second strategy is the utilization of flexible AC transmission system (FACTS) devices or storage energy devices to meet the grid code requirements. This strategy seems more appropriate for implementation in the existing WECS-grid connection in order to comply with the current grid code requirements. By appropriate design, the devices might be more cost effective compared to the first strategy, particularly for the large wind farms that are already connected to the grid.A new control algorithm of a SMES unit, which is simple but still involves all the important parameters, is employed in this study. Using the hysteresis current control approach in conjunction with a fuzzy logic controller, the SMES unit successfully and effectively improves the performance of the DFIG during voltage sag and swell events in the grid side; thus, this will prevent the WECS equipped with DFIG from being disconnected from the grid according to the selected fault ride through used in this study. The dynamic study of DFIG with SMES during short load variation is carried out as an additional advantage of SMES application on a DFIG system. In this study, the proposed SMES unit is controlled to compensate the reduced transfer power of DFIG during the short load variation event. Moreover, the SMES unit is also engaged in absorbing/storing some amount of excessive power that might be transferred to the grid when the local loads are suddenly decreased. Finally, the studies of intermittent misfires and fire-through that take place within the converters of DFIG are carried out in order to investigate the impact of these converter faults on the performance of DFIG. In this part, the proposed SMES unit is controlled to effectively improve the DFIG’s performance in order to prevent it from being disconnected or shut down from the power grid during the occurrence of these intermittent switching faults.
APA, Harvard, Vancouver, ISO, and other styles
4

Buehrle, Bridget Erin. "Modeling of Small-Scale Wind Energy Conversion Systems." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/50920.

Full text
Abstract:
As wind turbines are increasingly being adopted for meeting growing energy needs, their implementation for personal home use in the near future is imminent. There are very few studies conducted on small-scale turbines in the one to two meter diameter range because the power generated at this scale is currently not sufficient to justify the cost of installation and maintenance. The problem is further complicated by the fact that these turbines are normally mounted at low altitudes and thus there is necessity to have the optimum operating regime in the wind speed range of 3-10 mph (1.34 -- 4.47 m/s). This thesis discusses two methods for increasing the efficiency of horizontal axis small-scale wind energy conversion systems, 1) adding a diffuser to increase the wind speed at the rotor and 2) designing tubercles to enhance the flow characteristics over blades. Further, it was identified during the course of thesis that for simple installation and maintenance in the residential areas vertical axis turbines are advantageous. Thus, the second chapter of this thesis addresses the design of vertical axis turbines with power generation capability suitable for that of a typical US household.
    The study of the diffuser augmented wind turbine provides optimum dimensions for achieving high power density that can address the challenges associated with small scale wind energy systems; these challenges are to achieve a lower start-up speed and low wind speed operation. The diffuser design was modeled using commercial computational fluid dynamics code. Two-dimensional modeling using actuator disk theory was used to optimize the diffuser design. A statistical study was then conducted to reduce the computational time by selecting a descriptive set of models to simulate and characterize relevant parameters\' effects instead of checking all the possible combinations of input parameters. Individual dimensions were incorporated into JMP® software and randomized to design the experiment. The results of the JMP® analysis are discussed in this paper. Consistent with the literature, a long outlet section with length one to three times the diameter coupled with a sharp angled inlet was found to provide the highest amplification for a wind turbine diffuser.
    The second study consisted of analyzing the capabilities of a small-scale vertical axis wind turbine. The turbine consisted of six blades of extruded aluminum NACA 0018 airfoils of 0.08732 m (3.44 in) in chord length. Small-scale wind turbines often operate at Reynolds numbers less than 200,000, and issues in modeling their flow characteristics are discussed throughout this thesis. After finding an appropriate modeling technique, it was found that the vertical axis wind turbine requires more accurate turbulence models to appropriately discover its performance capabilities.
    The use of tubercles on aerodynamic blades has been found to delay stall angle and increase the aerodynamic efficiency. Models of 440 mm (17.33 in) blades with and without tubercles were fabricated in Virginia Tech\'s Center for Energy Harvesting Materials and Systems (CEHMS) laboratory. Comparative analysis using three dimensional models of the blades with and without the tubercles will be required to determine whether the tubercle technology does, in fact, delays the stall. Further computational and experimental testing is necessary, but preliminary results indicate a 2% increase in power coefficient when tubercles are present on the blades.

Master of Science
APA, Harvard, Vancouver, ISO, and other styles
5

Trilla, Romero Lluís. "Power converter optimal control for wind energy conversion systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/134602.

Full text
Abstract:
L'energia eòlica ha incrementat la seva presència a molts països i s'espera que tingui encara un pes més gran en la generació elèctrica amb la implantació de la tecnologia eòlica marina. En aquest context el desenvolupament de models dels Sistemes de Generació per Turbina de Vent (SGTV) precisos és important pels operadors de xarxa per tal d'avaluar-ne el comportament. Els codis de xarxa ofereixen un seguit de normes per validar models amb dades obtingudes de proves de camp. A la primera part d'aquesta tesi un model de SGTV amb màquina d'inducció doblement alimentada (DFIG) és validat d'acord amb les normatives espanyola i alemanya. Avui dia molts parc eòlics utilitzen DFIG i, en conseqüència, les dades de camp disponibles son per aquesta tecnologia. Per a la indústria eòlica marina un avanç prometedor son els SGTV amb generadors síncrons d'imants permanents (PMSG). Per aquesta raó la segona part d'aquesta tesi es centra en SGTV basats en PMSG amb convertidor back-to-back de plena potència. Aquest convertidor es pot dividir en dues parts: el costat de xarxa (GSC) que interactua amb la xarxa elèctrica i el costat de màquina (MSC) que controla el generador. En general, el sistema de control del convertidor recau en els tradicionals controladors PI i, en ocasions, incorpora desacoblaments per reduir les influencies creuades entre les variables. Aquest controlador pot ser sintonitzat i implementat fàcilment donat que la seva estructura és simple, però, no presenta una resposta ideal donat que no aprofita tots els graus de llibertat disponibles en el sistema. És important desenvolupar controladors fiables que puguin oferir una resposta previsible del sistema i proveir robustesa i estabilitat. En especial per zones on la presència eòlica és gran i per parcs eòlics connectats a xarxes dèbils. En aquest treball es proposa un sistema de control pel convertidor basat en teoria de control H-infinit i en controladors Lineals amb Paràmetres Variants (LPV). La teoria de control òptim proveeix un marc de treball on més opcions es poden tenir en consideració a l'hora de dissenyar el controlador. En concret la teoria de control H-inifinit permet crear controladors multivariables per tal d'obtenir una òptima resposta del sistema, proveir certa robustesa i assegurar l'estabilitat. Amb aquesta tècnica durant la síntesi del controlador el pitjor cas de senyals de pertorbació és contemplat, d'aquesta manera el controlador resultant robustifica l'operació del sistema. Es proposa aquest control per al GSC posant especial èmfasi en obtenir un control de baixa complexitat que mantingui els beneficis d'aplicar la teoria de control òptim i faciliti la seva implementació en computadors industrials. Pel MSC es proposa una estratègia diferent basada en control LPV donat que el punt d'operació del generador canvia constantment. El sistema de control basat en LPV és capaç d'adaptar-se dinàmicament al punt d'operació del sistema, així s'obté en tot moment la resposta definida durant el procés de disseny. Amb aquesta tècnica l'estabilitat del sistema sobre tot el rang d'operació queda garantida i, a més, s'obté una resposta predictible i uniforme. El controlador està dissenyat per tenir una estructura simple, com a resultat s'obté un control que no és computacionalment exigent i es proveeix una solució que pot ser utilitzada amb equips industrials. S'utilitza una bancada de proves que inclou el PMSG i el convertidor back-to-back per tal d'avaluar experimentalment l'estratègia de control dissenyada al llarg d'aquest treball. L'enfoc orientat a la implementació dels controls proposats facilita el seu ús amb el processador de senyals digitals inclòs a la placa de control de la bancada. Els experiments realitzats verifiquen en un ambient realista els beneficis teòrics i els resultats de simulació obtinguts prèviament. Aquestes proves han ajudat a valorar el funcionament dels controls en un sistema discret i la seva tolerància al soroll de senyals i mesures
Wind energy has increased its presence in many countries and it is expected to have even a higher weight in the electrical generation share with the implantation of offshore wind farms. Consequently, the wind energy industry has to take greater responsibility towards the integration and stability of the power grid. In this sense, there are proposed in the present work control systems that aim to improve the response and robustness of the wind energy conversion systems without increasing their complexity in order to facilitate their applicability. In the grid-side converter it is proposed to implement an optimal controller with its design based on H-infinity control theory in order to ensure the stability, obtain an optimal response of the system and also provide robustness. In the machine-side converter the use of a Linear Parameter-Varying controller is selected, this choice provides a controller that dynamically adapts itself to the operating point of the system, in this way the response obtained is always the desired one, the one defined during the design process. Preliminary analysis of the controllers are performed using models validated with field test data obtained from operational wind turbines, the validation process followed the set of rules included in the official regulations of the electric sector or grid codes. In the last stage an experimental test bench has been developed in order to test and evaluate the proposed controllers and verify its correct performance.
APA, Harvard, Vancouver, ISO, and other styles
6

Mendonca, Jose Manuel de Araujo Baptista. "Microcomputer on-line control of wind energy conversion systems." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38101.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wu, Feng. "Modelling and control of wind and wave energy conversion systems." Thesis, University of Birmingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525483.

Full text
Abstract:
The modelling and control of wind and wave energy conversion systems is carried out in this thesis. The thesis comprises two parts. The first part is focused on the modelling and control of wind conversion system while the second part is on the modelling and control of wave energy conversion system (WEe). In the first part, the small signal stability of the \\lind turbine (\VT) with doubly fed induction generator (DFIG) and the WT with direct-drive permanent magnet generator (DDPMG) an: analysed using detailed models. A parameter tuning algorithm and a nonlinear controller are proposed, respectively, to improve dynamic performance of WT with DFIG. The impacts of WT with DFIG, WT with DDPMG and WT the induction generator (lG) on power system transient stability are compared. In the second part, a new coordinate transformation is proposed for the model of Archimedes wave swing (A WS) based WEe system, the transformed model is compatible with the power system dynamic analysis. The controllers for A WS based WEe are designed so as to extract maximum power from the wave, output constant power and maintain the terminal voltage. The application of battery energy storage in smoothing the output power of WEe system is studied.
APA, Harvard, Vancouver, ISO, and other styles
8

MacRae, Angus Neil. "Economic and cost engineering aspects of wind energy conversion systems." Thesis, Robert Gordon University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258961.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Macmillan, Susan. "An appraisal of wind energy conversion systems for agricultural enterprises." Thesis, Robert Gordon University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330282.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zoric, I. "Multiple three-phase induction generators for wind energy conversion systems." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/8387/.

Full text
Abstract:
During the past decade, there has been a considerable increase in the number of published works on multiphase machines and drives. This increased interest has been largely driven by a need for the so-called green energy, i.e. energy generated from renewable sources such as wind, and also an increased emphasis on greener means for transportation. Some of the advantages multiphase machines offer over three-phase counterparts are better fault tolerance, smaller current and power per phase, and higher frequency torque ripple. This thesis examines use of a multiphase induction generator in wind energy conversion systems (WECS). In particular, multiphase generators that comprise multiple 3-phase winding sets, where each winding set is supplied using an independent 3-phase voltage source inverter (VSI), are studied. It is claimed that these topologies offer advantages in cases where a WECS is connected to a multitude of independent ac or dc microgrids, systems where a single high-voltage dc link is needed or where a simple fault tolerance is achieved when a complete winding set is switched off. All of these examples require an arbitrary power or current sharing between winding sets. In order to achieve arbitrary current and power sharing, the control can be implemented using multi stator (MS) variables, so that the flux and torque producing currents of each winding set can be arbitrarily set. As an alternative, this thesis uses vector space decomposition (VSD) to implement the control, while individual winding set flux/torque producing currents are governed by finding the relationships between MS and VSD variables. This approach has all the advantages of both MS and VSD, i.e. access to individual winding set variables of MS and the ability to implement control in the multiple decoupled two dimensional subspaces of VSD, while heavy cross coupling between winding set variables, a weakness of MS, is avoided. Since the goal of the thesis is to present use of multiphase machines in WECS, modelling and simulation of a simple multiphase WECS in back-to-back configuration has been performed at first. All systems relevant to machine control where considered, such as grid and machine side VSIs, grid filter, indirect rotor field oriented control, current control in both flux/torque producing and non-producing subspaces, low order harmonic elimination, maximum power point tracking control, and voltage oriented control of the grid side VSI. Moreover, various WECS supply topologies were considered where developed current and power sharing would be a necessary requirement. Development of the proposed current sharing control commences with an analysis of multiple 3-phase machine modelling in terms of both MS and VSD variables. Since the actual control is implemented using decoupled VSD variables, VSD modelling has been studied in detail, resulting in an algorithm for creation of the VSD matrix applicable to any symmetrical or asymmetrical multiphase machine with single or multiple neutral points. Developed algorithm always decouples the machine into orthogonal two-dimensional subspaces and zero sequence components while making sure that all odd-order harmonics are uniquely mapped. Harmonic mapping analysis is offered as well. Next, relationship between MS and VSD variables has been developed by mapping MS variables into VSD subspaces. Since VSD matrix creation algorithm is valid for any multiphase machine, relationship between MS and VSD variables is applicable to any multiple 3-phase machine regardless of the configuration (symmetrical/asymmetrical), number of neutral points or machine type (synchronous or induction). Established relationship between MS and VSD has been used to implement current sharing control in decoupled VSD subspaces of the machine. It is shown that in order to achieve arbitrary current sharing it is only necessary to impose currents in flux/torque non-producing subspaces. Hence, total machine’s flux and torque are not affected at all. Besides verification by Matlab simulations, two topologies are experimentally investigated, a parallel machine side converter configuration and the case when a single high voltage dc link is created by cascading dc-links of the machine side VSIs. In the first case the ability of arbitrary current sharing between winding sets is validated, while the second tested topology demonstrates use of the developed control for the purpose of voltage balancing of the cascaded dc links.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Wind energy conversion systems (WECS)"

1

Meeting of Experts, Aerodynamic Calculational Methods for WECS (12th 1984 Copenhagen, Denmark). Implementing agreement for co-operation in the development of large scale wind energy conversion systems: 12th Meeting of Experts, Aerodynamic Calculational Methods for WECS, Copenhagen, October 29-30, 1984. Jülich: Zentralbibliothek der Kernforschungsanlage, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Muyeen, S. M., ed. Wind Energy Conversion Systems. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2201-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

L, Freris L., ed. Wind energy conversion systems. New York: Prentice Hall, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Heier, Siegfried. Grid integration of wind energy conversion systems. Chichester: Wiley, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Muyeen, S. M. Wind energy conversion systems: Technology and trends. London: Springer, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sumathi, S., L. Ashok Kumar, and P. Surekha. Solar PV and Wind Energy Conversion Systems. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14941-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Grid integration of wind energy conversion systems. 2nd ed. Chichester, West Sussex, England: Wiley, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Khaligh, Alireza. Energy harvesting: Solar, wind, and ocean energy conversion systems. Boca Raton: Taylor & Francis, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Khaligh, Alireza. Energy harvesting: Solar, wind, and ocean energy conversion systems. Boca Raton: CRC Press, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

C, Onar Omer, ed. Energy harvesting: Solar, wind, and ocean energy conversion systems. Boca Raton: Taylor & Francis, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Wind energy conversion systems (WECS)"

1

Abu-Siada, Ahmed, Mohammad A. S. Masoum, Yasser Alharbi, Farhad Shahnia, and A. M. Shiddiq Yunus. "Applications of Unified Power Flow Controller in Wind Energy Conversion System." In Recent Advances in Renewable Energy, 17–48. UAE: Bentham Science Publishers Ltd., 2017. http://dx.doi.org/10.2174/9781681085425117020003.

Full text
Abstract:
Unified power flow controller (UPFC) is one of the Flexible ac Transmission System (FACTS) devices that possess the ability of modulating both active and reactive power at the point of common coupling in four quadrant operational modes. This chapter illustrates UPFC topology, controllers with some case studies for various applications of UPFC in the DFIG-based WECS. New applications for UPFC are proposed to improve the overall performance of a DFIG-based WECS during voltage sag and voltage swell events at the grid side.
APA, Harvard, Vancouver, ISO, and other styles
2

Mahto, Tarkeshwar, Hasmat Malik, and V. Mukherjee. "Condition Monitoring, and Fault Detection and Diagnostics of Wind Energy Conversion System (WECS)." In Advances in Intelligent Systems and Computing, 121–54. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1532-3_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Arockiaraj, S., B. V. Manikandan, and B. Sakthisudharsun. "Intensive Analysis of Sub Synchronous Resonance in a DFIG Based Wind Energy Conversion System (WECS) Connected with Smart Grid." In Communications in Computer and Information Science, 242–53. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0716-4_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shetty, Sudeep, H. L. Suresh, M. Sharanappa, and C. H. Venkat Ramesh. "Performance of Wind Energy Conversion System During Fault Condition and Power Quality Improvement of Grid-Connected WECS by FACTS (UPFC)." In Emerging Research in Computing, Information, Communication and Applications, 211–25. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6001-5_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mathew, Sathyajith. "Wind energy conversion systems." In Wind Energy, 89–143. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30906-3_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Mathew, Sathyajith. "Performance of wind energy conversion systems." In Wind Energy, 145–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30906-3_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sumathi, S., L. Ashok Kumar, and P. Surekha. "Wind Energy Conversion Systems." In Solar PV and Wind Energy Conversion Systems, 247–307. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14941-7_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Belu, Radian. "Wind Energy Conversion Systems." In Fundamentals and Source Characteristics of Renewable Energy Systems, 253–302. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2020. | Series: Nano and energy series |: CRC Press, 2019. http://dx.doi.org/10.1201/9780429297281-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Muyeen, S. M. "Introduction." In Wind Energy Conversion Systems, 1–22. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2201-2_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Rachidi, F., M. Rubinstein, and A. Smorgonskiy. "Lightning Protection of Large Wind-Turbine Blades." In Wind Energy Conversion Systems, 227–41. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2201-2_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Wind energy conversion systems (WECS)"

1

Salameh, Ziyad. "Keynote speech 2: Wind energy conversion systems (WECS)." In 2013 1st International Conference & Exhibition on the Applications of Information Technology to Renewable Energy Processes and Systems (IT-DREPS). IEEE, 2013. http://dx.doi.org/10.1109/it-dreps.2013.6588134.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bhutto, Darya Khan, Jamshed Ahmed Ansari, Syed Sabir Hussain Bukhari, and Faheem Akhtar Chachar. "WIND ENERGY CONVERSION SYSTEMS (WECS) GENERATORS: A REVIEW." In 2019 2nd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET). IEEE, 2019. http://dx.doi.org/10.1109/icomet.2019.8673429.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Swamy, M. P. Shadakshara, P. Rakshith, K. S. Varchasvi, N. M. Nithyashree, and H. P. Vinay. "MPPT controlled wind energy conversion system(WECS) supplying DC micro-grid." In 2020 Third International Conference on Smart Systems and Inventive Technology (ICSSIT). IEEE, 2020. http://dx.doi.org/10.1109/icssit48917.2020.9214151.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wiik, Jan Arild, Arkadiusz Kulka, Takanori Isobe, Kazuhiro Usuki, Marta Molinas, Taku Takaku, Tore Undeland, and Ryuichi Shimada. "Loss and Rating Considerations of a Wind Energy Conversion System with Reactive Compensation by Magnetic Energy Recovery Switch (MERS)." In 2008 Wind Power to the Grid - EPE Wind Energy Chapter - 1st Seminar (EPE-WECS). IEEE, 2008. http://dx.doi.org/10.1109/epewecs.2008.4497316.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ruchika, Ritika Gour, Pulkit Jain, Rashmi, Rajveer Mittal, and S. S. Deswal. "PMSG based isolated wind energy conversion system (WECS) for variable load." In 2012 IEEE 5th India International Conference on Power Electronics (IICPE). IEEE, 2012. http://dx.doi.org/10.1109/iicpe.2012.6450453.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Azzouz, Maher, Abdel-latif Elshafei, and Hasan Emara. "Evaluation of fuzzy-based maximum power tracking in wind energy conversion systems (WECS)." In 2010 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2010. http://dx.doi.org/10.1109/fuzzy.2010.5584571.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

R. F. B. de Souza, Victor, Luciano S. Barros, and Flavio B. Costa. "Performance Comparison of Converter Topologies for Double Fed Induction Generator-based Wind Energy Conversion Systems." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1512.

Full text
Abstract:
The advancements in power electronics have supported the widespread penetration of wind energy conversion systems (WECS) in electric grids. In this context, power converters have crucial functionality in the control of active and reactive power injection, moreover they are directly related to voltage and current harmonic distortion levels, mechanical and thermal stress that are experienced by the wind turbine. Currently, several topologies have been tested in order to improve the performance and increase the power processing of WECS to support the network demand. Based on the relevance of this issue, this paper presents a performance comparison of a Double Fed Induction Generator(DFIG)-based WECS employing three topologies of back-toback converters: two-level voltage source converter topology (2L-VSC), neutral point clamped (NPC) and modular multilevel converter (MMC). Simulation results present DFIG currents, voltages, torque, speed and the total harmonic distortion (THD), highlighting the performance improvement employing multilevel topologies and the impacts of using each topology.
APA, Harvard, Vancouver, ISO, and other styles
8

Benadja, Mounir, and Ambrish Chandra. "Sensorless control for wind energy conversion system (WECS) with power quality improvement." In 2014 IEEE Power & Energy Society General Meeting. IEEE, 2014. http://dx.doi.org/10.1109/pesgm.2014.6939128.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Acharya, Sayan, Samir Hazra, Kasunaidu Vechalapu, and Subhashish Bhattacharya. "Medium voltage power conversion architecture for high power PMSG based wind energy conversion system (WECS)." In 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2017. http://dx.doi.org/10.1109/ecce.2017.8096600.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sai. P, Sri Datta, K. Vidyadhari, Harija Rani K., and Sastry V. Vedula. "Performance Analysis of Parallel-Connected Grid Independent Wind Energy Conversion Systems (WECS) with Energy Storage." In 2020 International Conference on Emerging Frontiers in Electrical and Electronic Technologies (ICEFEET). IEEE, 2020. http://dx.doi.org/10.1109/icefeet49149.2020.9186969.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Wind energy conversion systems (WECS)' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography