Relevant bibliographies by topics / Wind converter

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Wind converter'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Wind converter"

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Akhmatov, Vladislav. "Full-Load Converter Connected Asynchronous Generators for MW Class Wind Turbines." Wind Engineering 29, no. 4 (June 2005): 341–51. http://dx.doi.org/10.1260/030952405774857833.

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Wind turbines equipped with full-load converter-connected asynchronous generators are a known concept. These have rating up to hundreds of kW and are a feasible concept for MW class wind turbines and may have advantages when compared to conventional wind turbines with directly connected generators.* The concept requires the use of full-scale frequency converters, but the mechanical gearbox is smaller than in conventional wind turbines of the same rating. Application of smaller gearbox may reduce the no-load losses in the wind turbines, which is why such wind turbines with converter connected generators may start operation at a smaller wind speed. Wind turbines equipped with such converted connected asynchronous generators are pitch-controlled and variable-speed. This allows better performance and control. The converter control may be applied to support the grid voltage at short-circuit faults and to improve the fault-ride-through capability of the wind turbines, which makes the concepts relevant for large wind farms. The Danish transmission system operator Energinet-DK has implemented the general model of wind turbines equipped with converter connected asynchronous generators with the simulation tool Powerfactory (DlgSilent). The article presents Energinet-DK's experience of modeling this feasible wind turbine concept.
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Sheryazov, Saken Koishybayevich, Sultanbek Sansyzbayevich Issenov, and Argyn Bauyrzhanuly Kaіdar. "EVOLUTION OF ENERGY CONVERTERS FOR WIND TURBINES." Bulletin of Toraighyrov University. Energetics series, no. 1.2021 (March 29, 2021): 317–29. http://dx.doi.org/10.48081/fxjn4704.

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A wind generator system requires a power conversion circuit called a power converter that is capable of regulating the generator frequency and line voltage. Several types of converter topologies have been developed over the past decades; each of them has its own advantages and disadvantages. Currently, there are mainly two converter topologies used in industrial wind turbines. Most of the proposed converters require line filters and transformers to improve the power quality and raise the voltage level accordingly. These heavy and bulky components add significantly to tower construction, turbine installation and maintenance costs. Recent advances in power semiconductors and magnetic materials have led to the development of new converter designs that could be a possible solution to reduce the size, weight and cost of power converters. This article provides an in-depth study of energy converter technology, ongoing research and development.
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Leila, Merabet, Mekki Mounira, Ourici Amel, and Saad Salah. "Modelling and control of wind turbine doubly fed induction generator with MATLAB simulink." Global Journal of Computer Sciences: Theory and Research 7, no. 2 (December 1, 2017): 77–91. http://dx.doi.org/10.18844/gjcs.v7i2.2714.

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This paper describes the modelling and control system of a wind turbine, using a doubly fed induction generator. This configuration makes the wind turbine suitable for variable speed wind energy application. The power captured by the wind turbine is converted into electrical power by the induction generator, and it is transmitted to the grid by the stator and the rotor windings. The control system generates voltage command signals for rotor converter and grid converter, respectively, in order to control the power of the wind turbine. Reactive power exchanged with the network through the converters is set to 0 VAr. The control strategy has been developed using MATLAB/Simulink. The simulation results are presented and discussed in the conclusions. Keywords: Wind energy, doubly fed induction generator, grid power, modelling, control.
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Quester, Matthias, Fisnik Loku, Otmane El Azzati, Leonel Noris, Yongtao Yang, and Albert Moser. "Investigating the Converter-Driven Stability of an Offshore HVDC System." Energies 14, no. 8 (April 20, 2021): 2341. http://dx.doi.org/10.3390/en14082341.

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Offshore wind farms are increasingly built in the North Sea and the number of HVDC systems transmitting the wind power to shore increases as well. To connect offshore wind farms to adjacent AC transmission systems, onshore and offshore modular multilevel converters transform the transmitted power from AC to DC and vice versa. Additionally, modern wind farms mainly use wind turbines connected to the offshore point of common coupling via voltage source converters. However, converters and their control systems can cause unwanted interactions, referred to as converter-driven stability problems. The resulting instabilities can be predicted by applying an impedance-based analysis in the frequency domain. Considering that the converter models and system data are often confidential and cannot be exchanged in real systems, this paper proposes an enhanced impedance measurement method suitable for black-box applications to investigate the interactions. A frequency response analysis identifies coupling currents depending on the control system. The currents are subsequently added to the impedance models to achieve higher accuracy. The proposed method is applied to assess an offshore HVDC system’s converter-driven stability, using impedance measurements of laboratory converters and a wind turbine converter controller replica. The results show that the onshore modular multilevel converter interacts with AC grids of moderate short-circuit ratios. However, no interactions are identified between the offshore converter and the connected wind farm.
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Thayumanavan, Porselvi, Deepa Kaliyaperumal, Umashankar Subramaniam, Mahajan Sagar Bhaskar, Sanjeevikumar Padmanaban, Zbigniew Leonowicz, and Massimo Mitolo. "Combined Harmonic Reduction and DC Voltage Regulation of A Single DC Source Five-Level Multilevel Inverter for Wind Electric System." Electronics 9, no. 6 (June 12, 2020): 979. http://dx.doi.org/10.3390/electronics9060979.

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Wind power generation has increased in the past twenty years due to the development of power electronic converters. Power generation through wind has advantages over other renewable sources, such as having more efficiency, being pollution-free, and its abundant availability. Power electronic converters play a vital role in the wind energy conversion system. This paper presents a wind-electric system with a permanent magnet synchronous generator, diode rectifier, DC-DC converter (buck-Boost or Cuk converter), and a three-phase five-level inverter. The five-level inverter is a modified form of a cascaded H-bridge inverter that uses a single DC source as an input irrespective of several levels and phases. As the wind speed changes, the Permanent Magnet Synchronous Generator (PMSG) voltage and frequency changes, but for practical applications, these changes should not be allowed; hence, a voltage controller is used that maintains the output voltage of a DC converter, andthus a constant AC output is obtained. The DClink voltage is maintained at the desired voltage by a Proportional plus Integral (PI)-based voltage controller. The DC link voltage fed to the multilevel inverter (MLI) is converted to AC to feed the load. The MLI is controlled with a new Selected Harmonic Elimination (SHE), which decreases the total harmonic distortion (THD). The system is simulated with an Resistive plus Inductive (RL) load and is tested experimentally with the same load;the results prove that the Cuk converter has a better efficiency compared to the Buck-Boost converter, and the system has less THD when compared with the conventional SHE Pulse Width Modulation (PWM) technique.
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Rannestad, Bjorn, Anders Eggert Maarbjerg, Kristian Frederiksen, Stig Munk-Nielsen, and Kristian Gadgaard. "Converter Monitoring Unit for Retrofit of Wind Power Converters." IEEE Transactions on Power Electronics 33, no. 5 (May 2018): 4342–51. http://dx.doi.org/10.1109/tpel.2017.2716946.

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Shafiee, Mahmood, Michael Patriksson, Ann-Brith Strömberg, and Lina Bertling Tjernberg. "Optimal Redundancy and Maintenance Strategy Decisions for Offshore Wind Power Converters." International Journal of Reliability, Quality and Safety Engineering 22, no. 03 (June 2015): 1550015. http://dx.doi.org/10.1142/s0218539315500151.

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Analysis of field failure data collected from various wind farm databases indicates that the power converters are among the most critical components in offshore wind turbines, since they suffer from a high failure rate. One efficient approach to enhance the reliability and availability of the wind power systems is through using a redundant converter design, in which a set of power converters is placed together in parallel. The main advantage of a multiple parallel converter system is that the failure of one converter will not necessarily lead to the failure of the entire system. It may however increase the wind turbine's acquisition cost, volume, and weight. In this paper, we propose an approach of joint redundancy and maintenance strategy optimization for offshore wind power converters, aiming to simultaneously determine the "optimal allocation of redundant converters" and the "optimal threshold number of converters that are allowed to fail before sending a maintenance crew to the offshore platform". The optimal solution under various system-level constraints (such as reliability, weight, and the available space in nacelle) is derived and the conditions required to make using a redundant system beneficial are discussed. The proposed design is applied to an offshore wind turbine system and its performance is evaluated using a Monte-Carlo simulation technique. Finally, the results are compared with the conventional power converter system and a sensitivity analysis is conducted in order to make the proposed approach applicable for the next generation of wind turbines.
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Sharma, Himanshu, Nitai Pal, Pankaj Kumar, and Ashiwani Yadav. "A control strategy of hybrid solar-wind energy generation system." Archives of Electrical Engineering 66, no. 2 (June 27, 2017): 241–51. http://dx.doi.org/10.1515/aee-2017-0018.

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AbstractSynchronization in the energy generated by renewable energy sources is one of the significant issue associated with the converter used in the system module. The presented paper concentrates on the design aspect of a PV and wind power input to a DC-DC converter which can be practically useful in hybrid renewable energy power systems. In this regard, the proposed converter can be utilized to obtain a smooth regulated output voltage from the given input renewable energy power sources. The proposed converter can be efficiently work under critical conditions having very few ripple in current waveform of input or output. A major advantage with this type of converter is the simple circuit with respect to the conventional converters in some critical situations. At the end, the result based on the simulation exercise and various experiments, performance of the converter in different situations is presented so that the efficiency of the designed converter arrangement is accepted.
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Buswig, Y. M. Y., Wahyu Mulyo Utomo, Zainal Alam Haron, and S. S. Yi. "Multi-Input Boost Converter for Hybrid PV and Wind Generator Systems." Advanced Materials Research 925 (April 2014): 619–24. http://dx.doi.org/10.4028/www.scientific.net/amr.925.619.

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A renewable energy source that works alone can’t achieve customers’ requirements for a stable power supply. Therefore, the paper proposes a multi-input converter for hybrid renewable energy system. This converter is designed for two input sources, PV and wind generator in order to design high efficiency and high performance converters for renewable energy applications. The proposed multi-input converter is composed by interleaved technique with two step-up converters and the two inputs are accommodated with some extra semiconductors, inductances and diodes. The modes of operation based on the status of the four switches, where S1 and S2 operate as main switches in order to deliver energy from both voltage sources. A constant output power to the load is provided by switching S3 switch, which guarantied the appropriate output voltage by reduce the ripple and improve the reliability. Simulations of multi-input converter has been performed using MATLAB/SIMULINK. The simulation results confirm the validity of the proposed method, which can be seen as a promising new topology that ensure multi-input converter suitable for renewable energy applications.
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Lazarov, Vladimir, Daniel Roye, Zahari Zarkov, and Dimitar Spirov. "Analysis of DC converters for wind generators." Facta universitatis - series: Electronics and Energetics 22, no. 2 (2009): 235–44. http://dx.doi.org/10.2298/fuee0902235l.

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The present paper investigates the system behavior of a rectifier and a DC boost converter used in a wind generator with variable speed. In many cases a combination of diode rectifier and a DC boost converter is used as interface between the generator and the inverter in order to match the requirements for the DC bus voltage. Different models of the converters have been developed in Malab/Simulink and PSPICE environments. Comparison between the simulations and experiments is shown. The power losses are also discussed. .
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Dissertations / Theses on the topic "Wind converter"

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Winberg, Helena, and Micaela Tiestö. "Theoretical analysis of the performance of a small wind energy converter." Thesis, University of Gävle, University of Gävle, Ämnesavdelningen för energi- och maskinteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4939.

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This thesis has been done in Barcelona, Spain, in cooperation with the University of Gävle (HiG) and the Universitat Politècnica de Catalunya (UPC). At UPC there is a project carried out where the goal is to analyze the characteristics and performance of the wind turbine IT-100, with an intention to optimize it. This is carried out by assignment of Engineers Without Borders and Practical Action. The purpose of the thesis has been to present what power, value of tension and current the turbine will produce in different wind velocities.

 

The IT-100 is built to generate electricity to the population in the countryside in, among other countries, Peru. The energy the turbine captures from the wind will be used to charge vehicle batteries that are used in the households as a source of electricity. This is an effective, cheap and environmental-friendly way of supplying households with electricity.

 

The idea of using the energy in the wind has been known for thousands of years. It started with simple windmills for grinding grain and later more complicated machines like wind turbines were created. Wind power is one of the worlds cleanest sources of energy with as good as no emissions at all while in running.

 

The result of the work with this thesis work is an Excel file where the, by the purpose requested, parameters are presented in relation to different wind velocities. With some conditions set from the start, some known values of reference and the rotor blades rotational speed as a key variable, these parameters were possible to calculate.

 

During the work, the project came upon some difficulties such as; not enough information about the wind turbine, too little previous knowledge among the students and trouble with the Spanish language. However, on the whole the project has been successful and a good learning experience.

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Abu-hamdeh, Muthanna S. "Modeling of Bi-directional Converter for Wind Power Generation." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259684130.

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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.

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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.
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Zhou, Yao. "High voltage DC/DC converter for offshore wind application." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/18749.

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With the increasing interest in offshore wind power, the related technologies, including HVDC networks, are gaining similar levels of attention. For large scale wind farms far from shore, high voltage DC transmission can provide several advantages over traditional high voltage AC transmission. This thesis focuses on DC/DC converters, a core part of the HVDC network, especially for use in the high voltage, high power and offshore wind environment. The thesis examines a wide range of possible DC/DC converter topologies for the application. Different topologies are compared and evaluated in detail for use in a high power situation. Based on these results, three DC/DC converter topologies are selected for more detailed modelling. The simulation processes and results are presented in the thesis, which reveals the limitations and behaviour of the topologies when they are used at the MW level. In addition, the high power semiconductor switching devices are discussed and evaluated for each topology. To assess the suitability of the DC/DC converter topologies in the offshore wind application, the selected converter topologies are also analysed and modelled combined with a PMSG wind turbine. Finally, a down-scaled DC/DC converter prototype is built to verify the analysis and simulation results.
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Prieto, Araujo Eduardo. "Power converter control for offshore wind energy generation and transmission." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/396110.

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This thesis discusses the control of different power converters that will have a key role in future offshore wind power systems, enabling the integration of the power generated by the wind turbines into the mainland grid. First, an overview of the evolution of wind turbines is presented, from the first prototypes to the latest topologies in use. Then, a new decentralized control strategy of a triple three-phase permanent magnet synchronous generator, a machine topology specifically designed for offshore wind, is presented. The proposed controller is tested on a wind turbine emulator with a scaled down 30 kW nine-phase generator. It has been suggested that future wind power plants could use medium voltage DC collection networks. These would require DC/DC converters to adapt the voltages between the turbine output and the DC collection grid. Based on this idea, the control design of a DC/DC Dual Bridge Series Resonant Converter (DBSRC) unit is developed and tested in a scaled 50 kW converter prototype. The availability of significant energy resources far from the coast favors the idea of creating offshore wind farms. This poses important technical and economical challenges. To this end, Voltage Source Converter-based High Voltage Direct Current (VSC-HVDC) technology enables high power transmission across distances where High Voltage Alternating Current (HVAC) is impractical. The Modular Multilevel Converter (MMC) is the preferred topology to reach high AC and DC voltages. In this work, the control design of a half-bridge based MMC to enable the converter operation under both normal and unbalanced AC voltage conditions, is addressed. Finally, considering that many offshore wind power plants will be installed in the North Sea in the coming years, a multi-terminal HVDC grid interconnecting several production plants and different points of the mainland grid is envisaged. To deal with DC multi-terminal grid voltage stability, a methodology to address the grid primary voltage control design is proposed based on multivariable frequency methods which are able to evaluate the dynamic behavior of the system.
La present tesi tracta sobre el control dels diferents convertidors que tindran un paper essencial en els futurs sistemes eòlics marins, permetent la integració de la potència generada pels aerogeneradors a la xarxa terrestre. En primer lloc, es presenta un estudi sobre levolució dels aerogeneradors, des dels primers conceptes a les opcions en ús més modernes. A continuació, es detalla una estratègia de control descentralitzada d'una màquina síncrona d'imants permanents de triple estator trifàsic, una topologia específicament dissenyada per eòlica marina. La proposta de control es valida per mitjà d'un emulador de turbina eòlica juntament amb una màquina de nou fases a escala de 30 kW. En els darrers anys s'ha contemplat la possibilitat de que els futurs parcs eòlics emprin corrent continu dins la seva xarxa interna. Per tal de construir aquesta xarxa resulten necessaris convertidors d'adaptació DC/DC entre la sortida de la turbina i la xarxa interna del parc en corrent continu. En base a aquesta proposta, es realitza el disseny del control d'un convertidor DC/DC Dual Bridge Series Resonant Converter (DBSRC). Per validar els resultats obtinguts, es desenvolupa un prototip del convertidor a escala de 50 kW. L'alta disponibilitat de recursos eòlics en indrets allunyats de la costa, afavoreix la creació de nous parcs eòlics marins, fet que presenta reptes econòmics i tècnics importants. Amb aquesta finalitat, la tecnologia Voltage Source Converter High Voltage Direct Current (VSC-HVDC) permet realitzar la transmissió de potència salvant llargues distàncies, on la transmissió High Voltage Alternating Current (HVAC) no és adient. El Modular Multilevel Converter (MMC) és la topologia preferida per assolir altes tensions en AC i DC. En aquest treball, es desenvolupa el disseny del control d'un convertidor MMC amb cel¿les de mig pont per tal d'operar en presència de sots de tensió desequilibrats a la xarxa. Finalment, degut a que en un futur proper s'instal·laran al mar del Nord un gran nombre de parcs eòlics marins, es preveu la creació d'una gran xarxa multiterminal HVDC interconnectant diferents plantes de producció eòlica amb diferents punts de la xarxa terrestre. Per tal d'assegurar l'estabilitat de la xarxa, es proposa una metodologia de disseny del control primari de tensió de la xarxa basada en l'anàlisi freqüencial multivariable, capaç davaluar el comportament dinàmic del sistema.
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Ström, Mikael. "Wind Power and Railway Feeding : Solution with three sided converter." Thesis, KTH, Elkraftteknik, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139389.

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In this thesis it is investigated if it would be technically and economicallypossible to combine wind power and railway feeding. As a case studyBlekinge Kustbana (BKB), a railway section in the south of Sweden ischosen. The thesis includes an extensive power and energy flow analysison the railway section where large-scale wind power production is directlyconnected.When the work of this thesis started it was first of all a three sided convertersolution that should be studied. Where three-sided converter consists of aPWM-converter with the wind power connected to the DC-Iink. But duringthe work it was concluded that this solution is not the best solution for thecase. A better solution is the three-sided transformer, were the wind poweris connected through a third winding to the railway transformer on the 50Hzside.Also different railway feeding systems and their influence on how the windpower can be used are investigated.From the conclusions it can be mentioned that it would be profitable todirectly connect 4.5MW wind power to BKB.

NR 20140805

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Ehlers, P., CG Richards, and DV Nicolae. "Small power, three to one phase matrix converter for wind generators." International Review of Electrical Engineering, 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001152.

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This paper investigates the concept of an isolated small wind power system based on a three-phase generator and a direct ac-to-ac conversion. The ac-to-ac conversion is performed by a matrix converter and thus removing the need of a large smoothing capacitor in the typical rectifier-inverter solution. The paper is briefly presenting the operation for a particular topology of a three-phase to single-phase matrix converter. The control of this conversion ensures system’s frequency and voltage stability. Simulation results and practical results are presented to validate the frequency and voltage regulation of the isolated power system.
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Hanssen, Mari Røed. "Operation Features of a Reduced Matrix Converter for Offshore Wind Power." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12581.

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When a wind park is sited offshore, compact, lightweight and reliable components are important requirements. In this Master's thesis a wind energy conversion system has been proposed, where the objective is to meet the requirements of an offshore environment. The system consists of a permanent magnet generator, a reduced matrix converter, a high frequency transformer and a full-bridge converter. It is the reduced matrix converter which is the main focus of the thesis. The reduced matrix converter (RMC) provides direct AC-AC conversion without the need of a bulky DC link capacitor, it is thus a compact solution. It is built with six bi-directional switches. Each switch consists of two reverse blocking IGBTs in antiparallel. The reverse blocking IGBT is different from the conventional IGBT because it blocks voltage of both polarities.Due to the direct AC-AC conversion of the RMC it is necessary to implement a special protection scheme for the circuit. The scheme provides reliable operation of the RMC so the switches are not damaged. This is achieved by the introduction of a clamp circuit. The clamp circuit has been studied during normal operation and the operation during faults has been described. The entire WECS has been implemented in the simulation program PSIM to simulate behavior of the clamp circuit during normal operation and to calculate switching and clamp circuit losses. Both losses are related to the RMC, and are important for the study of the overall energy efficiency of the converter. Total losses have been compared for two different modulation techniques, these are carrier based modulation and space vector modulation. The simulation results indicated that space vector modulation is the most energy efficient solution for the system.
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Nicolae, DV, CG Richards, and P. Ehlers. "Small power, three to one phase matrix converter for wind generators." Tshwane University of Technology, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001164.

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Abstract- This paper will investigate the use of a three-to-one Matrix converter to synchronize the electrical energy and condition the output of the wind generator. A Matrix converter is a direct ACAC solution, removing the need for large smoothing capacitors in a typical rectifier/inverter solution. This paper will briefly review the Matrix converter operational theory. A simulation and the practical results of a three-to-one phase matrix converter for varying input frequencies are also presented. The conclusion shows that the proposal is a viable solution for small power wind harvesting.
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Du, Plooy Jon-Pierre. "Development of a converter-fed reluctance synchronous generator wind turbine controller." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97015.

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Thesis (MEng)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: The growing contribution of wind energy to utility grids has sparked interest in small-scale wind turbines and thus a growing global cumulative installed capacity. Small-scale wind turbines find use in the saving of cost of electricity or for the carbon footprint reduction of small farms and small-holdings, as well as the electrification of rural communities. A goal of any wind turbine is to produce power at as low of a cost per unit energy as possible. Thus, a generator with a high power density and high efficiency is essential. The reluctance synchronous machine (RSM) is a strong competitor in this regard. Additionally, the RSM is a robust brushless topology that has good properties of manufacturability. However, studies published on the use of RSMs as generators in wind turbines is limited. This study serves to explore the performance and controllability of an RSM as a generator in a small-scale 9:2 kW wind turbine. For maximum power capture, it is desirable to have a wind turbine vary its rotor speed. However, there is a limit to the power that the generator may produce and so techniques are employed to reduce the captured power when operating above the rated wind speed. A turbine controller is developed that employs a speed-controlled maximum power point tracking (MPPT) technique for maximum power capture and soft-stalling of the blades to reduce power capture at excessive wind speeds. The RSM is modelled along with a turbine simulation model, complete with a wind source generator, to evaluate the performance of the system. Speed-controlled MPPT is known to sacrifice torque smoothness for fast tracking performance. To mitigate these harsh effects on the drivetrain, the speed reference of the generator is filtered to provide an average response to the optimal speed reference. This is shown to reduce the frequent and excessive speed, torque, and electrical power variations though optimal performance is not possible. However, any reduction on drivetrain fatigue that will maximise operation time of the turbine is considered an important gain. The RSM proves to have qualities that are applicable to wind turbine applications with its high efficiency, good manufacturability properties, low cost, and high robustness. Its higher power density over induction machines is also favourable though power electronics are required for optimal operation of the machine.
AFRIKAANSE OPSOMMING: Die groeiende bydrae van wind energie te nut roosters het aanleiding gegee tot belangstelling in kleinskaalse wind turbines en dus 'n groeiende w^ereldwye kumulatiewe geïnstalleerde kapasiteit. Kleinskaalse wind turbines vind ook gebruik in die besparing van koste van elektrisiteit, of vir die koolstofvoetspoor vermindering van klein plase en klein-hoewes, sowel as die elektrifisering van landelike gemeenskappe. Een van die doelwitte van enige wind turbine is om krag te produseer teen so laag van 'n koste per eenheid energie as moontlik. Dus, 'n kragopwekker met 'n hoë krag digtheid en hoë doeltreffendheid is noodsaaklik. Die reluktansie sinchroonmajien (RSM) is 'n sterk mededinger in hierdie verband. Daarbenewens is die RSM 'n robuuste borsellose topologie wat goeie eienskappe van vervaardigbaarheid het. Maar studies oor die gebruik van RSMs as kragopwekkers gepubliseer in die wind turbines is beperk. Hierdie studie dien om die prestasie te ondersoek en die beheerbaarheid van 'n RSM as 'n a kragopwekker in 'n klein-skaal 9:2 kW wind turbine te verken. Vir maksimum krag vang is dit wenslik dat die wind turbine sy rotor spoed wissel. Maar daar is 'n beperking op die krag wat die kragopwekker kan produseer en daarom work tegnieke gebruik om die gevange krag te verminder wanneer daar bo die gegradeerde wind spoed gewerk word. 'n Turbine beheerder word ontwikkel wat werk om 'n spoedbeheer maksimum kragpunt dop tegniek vir maksimum krag vang en die sagtestaking van die lemme krag vang deur oormatige wind spoed te verminder. Die RSM is gemodeleer saam met 'n turbine simulasie model kompleet met 'n wind bron kragopwekker om die prestasie van die stelsel te evalueer. Spoedbeheerde maksimum kragpunt dop is bekend om wringkrag gladheid vir 'n vinnige dop prestasie te offer. Om hierdie harde gevolge op die kragoorbringstelsel te versag is die spoed verwysing van die kragopwekker gefiltreer om 'n gemiddelde reaksie op die optimale spoed verwysing te verskaf. Dit word getoon om gereelde en hoë spoed, wringkrag en elektriese krag variases te verminder al is optimale prestasie nie moontlik nie. Enige afname van aandrystelsel moegheid wat operasie tyd van die turbine maksimeer word beskou as 'n belangrike gewin. Die RSM bewys eienskappe wat van toepassing is op die turbine aansoeke na aanleiding met sy hoë doeltreffendheid, goeie vervaardigbaarheid eienskappe, lae koste end ' hoë robuustheid. Sy hoër krag digtheid oor induksiemasjien is ook gunstig al is drywingselektronika nodig vir optimale werking van die masjien.
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Books on the topic "Wind converter"

1

Feng li fa dian zhong de dian li dian zi bian liu ji shu: Power electronic converter technology in wind power generation. Beijing Shi: Ji xie gong ye chu ban she, 2008.

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Bjerregaard, E. T. D. Data on existing wind energy converters in Denmark. Luxembourg: Commission of the European Communities, 1987.

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Teodorescu, Remus, Marco Liserre, and Pedro Rodríguez. Grid Converters for Photovoltaic and Wind Power Systems. Chichester, UK: John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9780470667057.

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Teodorescu, Remus. Grid converters for photovoltaic and wind power systems. Chichester: Wiley, 2011.

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Jensen, S. A. Collecting of new data on existing wind energy converters. Luxembourg: Commission of the European Communities, 1986.

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1937-, Palz W., ed. European wind energy technology: State of the art of wind energy converters in the European Community. Dordrecht: D. Reidel for the Commission of the European Communities, 1986.

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Bandy, Sandra L. Jump the wind. Washington, DC: Review and Herald Pub. Association, 1990.

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Burgel, R. System design considerations on combined wind-photovoltaic multi-Kilowatt energy converters. Luxembourg: Commission of the European Communities, 1985.

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Hoffmann, Christian H. Zwischen allen Stühlen: Ein Deutscher wird Muslim. Bonn: Bouvier, 1995.

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The winds and the waves. Salt Lake City, Utah: Deseret Book, 2012.

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Book chapters on the topic "Wind converter"

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Fortmann, Jens. "Generator and Converter." In Modeling of Wind Turbines with Doubly Fed Generator System, 81–111. Wiesbaden: Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-06882-0_5.

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Wagner, Hermann-Josef, and Jyotirmay Mathur. "Components of a Wind Energy Converter." In Introduction to Wind Energy Systems, 31–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32976-0_4.

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Wagner, Hermann-Josef, and Jyotirmay Mathur. "Components of a Wind Energy Converter." In Introduction to Wind Energy Systems, 29–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02023-0_4.

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Wagner, Hermann-Josef, and Jyotirmay Mathur. "Components of a Wind Energy Converter." In Introduction to Wind Energy Systems, 31–44. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68804-6_4.

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Tawfiq, Kotb B., A. F. Abdou, and E. E. EL-Kholy. "Wind Energy System with Matrix Converter." In Renewable Energy and the Environment, 143–74. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7287-1_5.

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Khan, Md Shafquat Ullah. "Multilevel Converter-based Wind Power Conversion." In Advanced Multilevel Converters and Applications in Grid Integration, 413–32. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119476030.ch17.

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Rahman, Mohammad Lutfur, Shunsuke Oka, and Yasuyuki Shirai. "HOTT Power Controller With Bi-Directional Converter (HPB)." In Wind Energy Conversion Systems, 485–99. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2201-2_20.

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Glasdam, Jakob Bærholm. "Multi-level Converter Modelling and Evaluation." In Harmonics in Offshore Wind Power Plants, 89–104. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-26476-9_6.

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Bormann, Alexander, Maximilian Ranneberg, Peter Kövesdi, Christian Gebhardt, and Stefan Skutnik. "Development of a Three-Line Ground-Actuated Airborne Wind Energy Converter." In Airborne Wind Energy, 427–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39965-7_24.

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Ma, Ke. "Criteria and Tools for Evaluating Wind Power Converter." In Research Topics in Wind Energy, 31–43. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21248-7_3.

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Conference papers on the topic "Wind converter"

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Perez-Collazo, Carlos, Deborah Greaves, and Gregorio Iglesias. "Proof of Concept of a Novel Hybrid Wind-Wave Energy Converter." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78150.

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In a global scenario of climate change and raising threats to the marine environment, a sustainable exploitation of offshore wind and wave energy resources is not only crucial for the consolidation of both industries, but also to provide a reliable and accessible source of renewable energy. In this context, and with the shared challenge for both industries to reduce costs, the combination of wind and wave technologies has emerged. In particular, this research deals with a novel hybrid system that integrates an oscillating water column, wave energy converter, with an offshore wind turbine substructure. In this paper, the novel hybrid wind-wave energy converter is studied in a three steps process. First, assessing a preliminary concept by means of a concept development methodology for hybrid wind-wave energy converters. Secondly, an OWC WEC sub-system is defined, on the basis of the results from the first step. Finally, the proof of concept of the WEC sub-system is carried out by means of a physical modelling test campaign at the University of Plymouth’s COAST laboratory.
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Tucker, A., J. M. Pemberton, D. T. Swift-Hook, J. M. Swift-Hook, and J. W. Phillips. "Laminated Reinforced Concrete Technology for the Sperboytm Wave Energy Converter." In Marine Renewable & Offshore Wind Energy. RINA, 2010. http://dx.doi.org/10.3940/rina.mre.2010.13.

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Henry, A., K. Doherty, L. Cameron, R. Doherty, and T. Whittaker. "Advances in the Design of the Oyster Wave Energy Converter." In Marine Renewable & Offshore Wind Energy. RINA, 2010. http://dx.doi.org/10.3940/rina.mre.2010.14.

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ABBOTOY, M., and R. MENASSA. "An oscillatory wind energy converter." In 24th Aerospace Sciences Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1986. http://dx.doi.org/10.2514/6.1986-71.

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Zhu, Pengcheng, Yunfeng Liu, Roesner Robert, and Xin Hao. "Offshore wind converter reliability evaluation." In ECCE Asia (ICPE 2011- ECCE Asia). IEEE, 2011. http://dx.doi.org/10.1109/icpe.2011.5944655.

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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.

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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.
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Taufik, Taufik, Jameson Thornton, and Dale Dolan. "Piezoelectric Converter for Wind Energy Harvesting." In 2012 Ninth International Conference on Information Technology: New Generations (ITNG). IEEE, 2012. http://dx.doi.org/10.1109/itng.2012.38.

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Molenaar, David-P., O. H. Bosgra, and M. J. Hoeijmakers. "Identification of Synchronous Generator Transfer Functions From Standstill Test Data." In ASME 2002 Wind Energy Symposium. ASMEDC, 2002. http://dx.doi.org/10.1115/wind2002-55.

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The design of a robust frequency converter controller for high dynamic performance of a synchronous generator requires an accurate dynamic model of the electromagnetic part. In this paper a new procedure for identifying the transfer functions of Park’s dq-axis model of a synchronous generator has been developed. It will be shown that the parameters of this model can be easily identified from standstill time-domain data. The validity of the theoretical model has been verified by comparing time-domain simulations with measurements taken from the Lagerwey LW-50/750 direct-drive synchronous generator. It can be concluded that a consistent model estimate of the electromagnetic part of the LW-50/750 generator has been obtained. Ultimate validation, however, will follow after the implementation of the designed frequency converter controller in this wind turbine.
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Baygildina, Elvira, Pasi Peltoniemi, Olli Pyrhonen, Ke Ma, and Frede Blaabjerg. "Thermal loading of wind power converter considering dynamics of wind speed." In IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2013. http://dx.doi.org/10.1109/iecon.2013.6699331.

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Ivanovic, Zeljko, Branko Dokic, Branko Blanusa, and Mladen Knezic. "Boost converter efficiency optimization in wind turbine." In 2010 14th International Power Electronics and Motion Control Conference (EPE/PEMC 2010). IEEE, 2010. http://dx.doi.org/10.1109/epepemc.2010.5606839.

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Reports on the topic "Wind converter"

1

Darren Hammell and Mark Holveck. Reliable, Efficient and Cost-Effective Electric Power Converter for Small Wind Turbines Based on AC-link Technology. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/889356.

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Erickson, R., S. Angkititrakul, and K. Almazeedi. New Family of Multilevel Matrix Converters for Wind Power Applications: Final Report, July 2002 - March 2006. Office of Scientific and Technical Information (OSTI), December 2006. http://dx.doi.org/10.2172/897520.

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R. Lynette & Associates and Pacific Northwest Laboratory staff exchange: Analysis and evaluation of the application of the Pulse Amplitude Synthesis and Control (PASC) converter in a wind power plant. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/565644.

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INFLUENCE OF EXECUTION TOLERANCES FOR FRICTION CONNECTIONS IN CIRCULAR AND POLYGONAL TOWERS FOR WIND CONVERTERS. The Hong Kong Institute of Steel Construction, December 2017. http://dx.doi.org/10.18057/ijasc.2017.13.4.2.

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