Relevant bibliographies by topics / Static power converters

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Static power converters'

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

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Journal articles on the topic "Static power converters"

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Hassan, Raaed Faleh, and Suha Sabah Shyaa. "Design and Analysis of the STATCOM Based on Diode Clamped Multilevel Converter Using Model Predictive Current Control Strategy." European Journal of Electrical Engineering 23, no. 3 (June 21, 2021): 221–28. http://dx.doi.org/10.18280/ejee.230306.

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In recent decades, multi-level converters have become popular and used in many power systems applications. Compared with conventional converters, multi-level converters contribute to reducing the voltage stress on the switching devices and enhancing the power quality delivered to the load. In this paper, the study of the five-level diode clamped multilevel converter based static synchronous compensator has been accomplished. Model Predictive current control strategy which a type of modern control algorithms was employed for driving the proposed compensator. The suggested five level converter controlled by model predictive current control is firstly examined to verify that this control algorithm is appropriate for achieving the desired performance. Then the proposed converter and control combination is employed and simulated as a static synchronous compensator in distributed power system. Moreover, in order to examine the robustness of this compensator, the load status is suggested to be heavy inductive. Simulation process has been performed using MATLAB – SIMULINK software package. The results show that the implemented configuration (converter and control algorithm) provides high power quality improvement with adequate reactive power compensation.
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Stabile, Antonino, Chiara Boccaletti, and Antonio J. Marques Cardoso. "A Power Loss Measurement Method Applied to Static Power Converters." IEEE Transactions on Instrumentation and Measurement 62, no. 2 (February 2013): 344–52. http://dx.doi.org/10.1109/tim.2012.2212606.

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Tadakuma, Susumu. "Recent trend on high performance static power converters." IEEJ Transactions on Industry Applications 107, no. 11 (1987): 1306–10. http://dx.doi.org/10.1541/ieejias.107.1306.

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Fadli, Ouahiba, Mohamed Lokmane Bendaas, and Rachid Abdessemed. "Fault Diagnosis in Static Converters Used in Induction Heating Systems." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 3 (September 1, 2018): 1051. http://dx.doi.org/10.11591/ijpeds.v9.i3.pp1051-1063.

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This paper presents different techniques on fault diagnosis in static converters used to supply and control induction heating systems. These techniques allow the detection and the location of the failed semiconductor switches. After an overview of the device with its main features in healthy state, we have afterwards focused on the fault detection and diagnosis in three electronic power converters which constitute the power generator of the induction furnace. For uncontrolled three-phase rectifier, three external methods based on the analysis of lines currents are used: Average currents method, Current space vector trajectory, called Current Park’s vector approach and Spectrum analysis. For the buck converter (chopper), analytic redundancy approach, based on the residues calculation, is used. For the series resonant inverter, a simple and efficient method based on the average voltages analysis, allows the detection and the location of the power switch in fault. The obtained simulation results, in Matlab/Simulink, are presented and discussed. They reveal that the proposed diagnostic techniques are of great interest.
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Wang, Dian Long, Zhi Yang Zhang, and Shu Qi Liu. "Analysis on some Key Problems of High Power DCDC Converter for Fuel Cell Electrical Bus." Advanced Materials Research 860-863 (December 2013): 839–42. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.839.

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The significance of researching on fuel cell electrical vehicle (FCEV) DC/DC converter, FCEV driving system structure and requirement with DC/DC converter are introduced firstly. Some key problems of development in FCEV DC/DC converter are particularly analyzed, including of reliability, efficiency, static and dynamic characteristic, etc. The average efficiency of boost or buck circuit can reach more than 95%. The dynamic response time of DC/DC converter is below 160 ms. All kinds of DC/DC converters operate with zero error, and various technical indicators can satisfy the operating requirement. The converters are successfully used in china fuel cell city buses and technical indexes are fulfilled.
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Bonert, R. "A laboratory for power systems control with static converters." IEEE Transactions on Power Systems 13, no. 1 (1998): 15–20. http://dx.doi.org/10.1109/59.651607.

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Balan, Horia, Maria Buzdugan, I. Vadan, E. Simion, and P. Karaissas. "Hybrid Commutation Converter in HVDC Systems." Materials Science Forum 670 (December 2010): 415–24. http://dx.doi.org/10.4028/www.scientific.net/msf.670.415.

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This paper deals with DC – AC static converter systems, of very high voltages and currents, used for electricity power transmission. It has been analyzed three types of converters: with forced commutation, with commutation from load and the solution proposed by the authors. There are shown the advantages in hybrid switching converters, which in essence connect, constructive and as principle of operation, the advantages of the two known conversion systems. The analysis of the benefits of the proposed solution is done by comparing the circulating power of assets and also by analyzing the power factor. Not in the last, must be mentioned the paper contribution to the development of the theoretical base design for switching converters with hybrid commutation.
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SKOROKHOD, Yury Yu, and Sehgey I. VOL’SKIY. "An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor." Elektrichestvo 10, no. 10 (2020): 44–51. http://dx.doi.org/10.24160/0013-5380-2020-10-44-51.

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The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.
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Chung, P. D. "Evaluation of Reactive Power Support Capability of Wind Turbines." Engineering, Technology & Applied Science Research 10, no. 1 (February 3, 2020): 5211–16. http://dx.doi.org/10.48084/etasr.3260.

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Reactive power plays an important role in the operation of power systems, especially in the case of wind energy integration. This paper aims to evaluate the reactive power support capability of wind turbines in both normal and voltage sag conditions. The three 2MW wind turbines studied are a fixed speed wind turbine and two variable speed wind turbines with full-scale and power-scale power converters. Comparison results indicate that at normal operation, the fixed speed wind turbine with a static synchronous compensator is able to consume the highest reactive power, while the variable speed wind turbine with full-scale power converter can supply the highest reactive power. In case of low voltage, the fixed speed wind turbine with the static synchronous compensator can support the highest reactive power if the static synchronous compensator’s capacity is similar to the wind turbine’s capacity, while if its capacity is equal to 25% of the generator’s capacity, the variable speed wind turbine with full-scale power converter has the best performance.
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ChunXiang, Huang, Henadiy Pavlov, Mykhailo Pokrovskyi, Andriy Obrubov, and Iryna Vinnychenko. "DEVELOPMENT OF A FAST WIRELESS BATTERY CHARGING TECHNOLOGY FOR ACCUMULATORS USED IN CLEAN ENERGY TRANSPORT VEHICLES. STATIC CHARACTERISTICS OF A SERIES-TO-SERIES RESONANT CONVERTER FOR CONTACTLESS INDUCTIVE ENERGY TRANSMISSION." Science Journal Innovation Technologies Transfer, no. 2019-4 (September 1, 2019): 56–61. http://dx.doi.org/10.36381/iamsti.4.2019.56-61.

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The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of halfcycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.
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Dissertations / Theses on the topic "Static power converters"

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Junqueira, Alisson Dias. "Retificador trifásico com elevado fator de potência." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-19112004-151457/.

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Este trabalho trata da retificação trifásica com elevado fator de potência. São mostradas algumas soluções encontradas na literatura. Dentre elas, optou-se pela utilização de um conversor trifásico autocomutado do tipo fonte de tensão (VSC), operando em modulação em largura de pulso (PWM). Apresenta-se a modelagem do conversor, que é utilizado para o projeto dos controladores responsáveis pelo rastreamento das correntes da rede CA e pela regulação da tensão CC. O projeto do controlador das correntes CA, baseado na estratégia de dead-beat, é mostrado de forma simples e intuitiva e é discutida a estabilidade deste controlador. O projeto do controlador PI utilizado para a regulação da tensão CC é baseado no modelo linearizado do conversor. É utilizado um algoritmo simples e eficiente para o bloco PLL, baseado na estratégia “dead-beat”. O comportamento do sistema completo é verificado teoricamente, por simulações numéricas e resultados experimentais, confirmando o excelente desempenho das estratégias de controle e do método de projeto propostos. São discutidos ainda os efeitos da variação nos parâmetros no desempenho e na estabilidade do sistema.
This study investigates three-phase rectifiers with high power factor. Some existing solutions in the literature are presented. One of them, the three-phase voltage source converter (VSC) rectifier with pulse width modulation (PWM) is chosen to be used. Converter modeling is presented and used to design a mains current tracking controller and a DC voltage regulator. AC current controlling based on the deadbeat strategy is presented in a simple and intuitive way, and the stability of this controller is discussed. The DC side PI controller is designed based on the linearized model of the converter. A simple and efficient PLL block algorithm, based on the deadbeat strategy is presented. The behavior of the complete system is verified theoretically, by numerical simulation and experimental results, confirming the excellent performance of the proposed control strategy and method of design. The effects of parameter mismatch on system performance and stability are also discussed.
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Imhoff, Johninson. "Desenvolvimento de conversores estáticos para sistemas fotovoltaicos autônomos." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/8608.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This work presents a new energy conditioning system for application in stand-alone photovoltaic systems with battery bank. Firstly, the characteristics of solar photovoltaic energy, the modeling of a photovoltaic cell and the equivalent electrical circuit are presented. In a second moment, the photovoltaic generation systems and a review of the static converters applied to stand-alone photovoltaic systems with battery bank are presented. From this study it is proposed a new photovoltaic generation system, with distributed energy processing based on series-connected DC-DC converters. The proposed system presents better utilization of the energy generated by the panels through the employment of more than one array of photovoltaic panels and a static power converter for each subsystem. Thereby, the losses through shading are reduced, and also the reliability of the system is increased, once even if one of the subsystems fails, the system will keep on generating electricity to the loads of higher priority. Posteriorly, the analyses of the operation of the system and simulation results are presented. Finally, it is presented experimental results, comparing the efficiency of the utilization of the energy generated by the input stage of the proposed system and by a system traditionally employed in stand-alone photovoltaic systems, showing an energy gain of 16% with the utilization of the proposed system for situations in which at least one panel is shaded.
Esta dissertação de mestrado apresenta um novo sistema de condicionamento de energia para aplicação em sistemas fotovoltaicos autônomos com banco de baterias. Inicialmente são apresentadas as características da energia solar fotovoltaica, a modelagem de uma célula fotovoltaica e um circuito elétrico equivalente. Em um segundo momento são apresentados os sistemas de geração fotovoltaica e uma revisão dos conversores estáticos aplicados a sistemas fotovoltaicos autônomos com banco de baterias. A partir deste estudo é proposto um novo sistema de geração fotovoltaica, com processamento distribuído de energia baseada em conversores CC-CC conectados em série. O sistema proposto apresenta um melhor aproveitamento da energia gerada pelos painéis através da utilização de mais de um arranjo de painéis fotovoltaicos e o emprego de um conversor estático de potência para cada subsistema. Assim, as perdas por sombreamento são reduzidas bem como é aumentada a confiabilidade do sistema, pois mesmo com a falha de um dos subsistemas o sistema continuará garantindo energia elétrica para as cargas de maior interesse. Posteriormente, são apresentadas as análises do funcionamento do sistema e resultados de simulação. Por fim, resultados experimentais são apresentados, comparando a eficiência no aproveitamento da energia gerada pelo estágio de entrada do sistema proposto e de um sistema tradicionalmente empregado em sistemas fotovoltaicos autônomos, demonstrando um ganho de energia de 16% com a utilização do sistema proposto para situações em que pelo menos um painel está sombreado.
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Kirsten, André Luís. "Reator eletrônico para lâmpadas de descarga em alta pressão baseado no conversor biflyback inversor." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/8494.

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The study of the best utilization of high intensity discharge lamps deals with the great global concern with energy efficiency. Electronic ballasts are the current devices that can make the good use of high luminous efficacy and the long useful life of these lamps. This work aims to develop an electronic ballast to supply high intensity discharge lamps. In order to avoid the acoustic resonance phenomenon occurrence, the lamp is supplied with low frequency square waveform. Power control and voltage inversion stage in the lamp are developed by the biflyback inverter topology. The analysis and design of this topology were performed, as well as the development of resonant inversion methodology of the lamp voltage. It is proposed one study, qualitative and quantitative, of active converters to provide the power factor correction, and their integration with the biflyback inverter topology. Buck biflyback inverter topology is chosen to the implementation of practical experiments, in order to validate the present work. The converter modeling, considering the lamp dynamic, such as the stability analysis and theoretical control strategy of current and lamp power are presented. Experimental results show that the proposed electronic ballast has the follow characteristics: high power factor (0.97), low input current harmonic distortion, high efficiency (88%) and not visible occurrence of acoustic resonance phenomenon.
O estudo do melhor aproveitamento das características das lâmpadas de descarga em alta pressão vem ao encontro da grande preocupação mundial com a eficientização energética. Reatores eletrônicos são os dispositivos atuais que melhor aproveitam a alta eficácia luminosa e longa vida útil dessas lâmpadas. Este trabalho visa o desenvolvimento de um reator eletrônico para a alimentação de lâmpadas de descarga em alta pressão. De modo a não excitar a ocorrência do fenômeno de ressonância acústica, a alimentação da lâmpada é realizada através de forma de onda de corrente quadrada em baixa frequência. Os estágios de controle de potência e inversão da tensão na lâmpada são realizados pela topologia biflyback inversora. A análise e projeto desta topologia foram realizados, assim como o desenvolvimento de uma metodologia de inversão ressonante da tensão da lâmpada. É proposto um estudo, qualitativo e quantitativo, dos conversores ativos para correção do fator de potência, e a integração destes, com a topologia biflyback inversora. A topologia buck biflyback inversora foi escolhida para a realização de experimentos práticos para a validação do trabalho. A modelagem do conversor, considerando a dinâmica de uma lâmpada de descarga em alta pressão de sódio foi realizada. Assim como a análise da estabilidade e estratégias de controle da corrente e da potência na lâmpada. Os resultados experimentais comprovam que o reator eletrônico proposto apresenta as características desejadas de: alto fator de potência (0,97), atendimento da norma IEC61000-3-2 para o nível das harmônicas da corrente de entrada, elevado rendimento (88%) e não excitação visível do fenômeno de ressonância acústica.
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MAIA, Ayslan Caisson Norões. "Sistemas de conversão de energia multiníveis obtidos através da interconexão de módulos de conversores estáticos de potência de dois níveis." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1561.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-08-27T19:35:43Z No. of bitstreams: 1 AYSLAN CAISSON NORÕES MAIA – TESE (PPGEEI) 2016.pdf: 13981392 bytes, checksum: 9ea0aa715fdf8400283e71381b49a21b (MD5)
Made available in DSpace on 2018-08-27T19:35:43Z (GMT). No. of bitstreams: 1 AYSLAN CAISSON NORÕES MAIA – TESE (PPGEEI) 2016.pdf: 13981392 bytes, checksum: 9ea0aa715fdf8400283e71381b49a21b (MD5) Previous issue date: 2016-02-22
Nesse trabalho são apresentadas contribuições na área de identificação de sistemas representados em espaço de estados. É proposta uma metodologia completa para estimação de modelos que representem as principais dinâmicas de proessos industriais. O fluxo natural dos procedimentos de identificação consiste da coleta experimental dos dados, seguido pela esolha dos modelos candidatos e da utilização de um critério de ajuste que selecione o melhor modelo possível. Nesse sentido é proposta uma metodologia para estimativa de modelos em espaço de estados, utilizando excitações pulsadas. A abordagem desenvolvida combina algoritmos precisos e eficientes com experimentos rápidos, adequados a ambientes industriais. O projeto das excitações é realizado em tempo real, por meio de informações coletadas em um curto experimento inicial, baseado em uma única oscilação de uma estrutura realimentada por um relé. Esse mecanismo possibilita uma estimativa preliminar do atraso e da constante de tempo dominante do sistema. O método de identificação proposto é baseado na teoria de realizações de Kalman. É apresentada uma reformulação do problema de realizações clássico, para comportar sinais de entrada pulsados. Essa abordagem se mostra computacionalmente e cliente, assim como apresentar resultados semelhantes aos métodos de benchmark. A técnica possibilita também a estimativa de atrasos de transporte e a inserção de conhecimentos prévios por meio de um problema de otimização com restrições via LMI Linear Matrix Inequalities. Em muitos casos, somente as caraterísticas principais dos sistema são relevantes em um projeto de sistema de controle. Portanto é proposta uma técnica para obtenção de modelos de primeira ordem com atraso, a partir da redução de modelos balanceados em espaço de estados. Por fim, todas as contribuições discutidas nesse trabalho de teses não validadas em uma série de plantas experimentais em salas de laboratório. Plantas essas, projetadas e construídas com o intuito de emular o cotidiano operacional de instalações industriais reais.
Static converters are a widely used equipment in power systems to control the electrical energy low between sources and loads. In this context, it is observed a demand for converters topologies that generate high quality waveforms and are capable of supplying loads with ever larger powers. In high power applications such as industrial and power systems, the development of a special class of converters topologies, denominated multilevel converters, has been widely recognized as a viable solution to overcome the operational limits of semiconductor devices. In this work are developed and analyzed multilevel structures of type DC-AC applied to the six-phase machines drives and of type AC-DC-AC feeding singlephase and three-phase loads. These topologies are obtained by interconnecting two-level converters modules in order to optimize the system: reduction of losses in the semiconductor devices, harmonic distortion of the signals and ratings of voltage and/or current in the power switches. For this investigation were performed steady state analyzes, where the operatinglimits of the structures to the imposed control conditions and the behavior of the fundamental component of voltage and current are evaluated. In addition, for each investigated topology, were developed: dynamic models, PWM techniques, control strategies, simulation results and experimental results. The impact of this optimization is quanti ed by calculating the THD and WTHD of the current and voltage signals generated by the converter and by estimating losses in the semiconductor devices. Finally, a comparative study is done using conventional converters as reference in order to evaluate the performance of the proposed topologies
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Marquezini, Diego Dias. "Interação entre conversores chaveados com baixa ondulação e células de combustível." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/8530.

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This dissertation discusses the interaction between fuel cells and the DC-DC converter just connected across its terminals. For that, it presents a modified algorithm to represent the dynamic behavior of fuel cell stacks as much the current ripple effects from power converters on such cells. PEM type fuel cells (Proton Exchange Membrane) are studied to get a reasonable model of the electrochemical and electric characteristics of the involved phenomena in the generation of electric energy from fuel cells. A T filter is used as interface between the fuel cell and the DC-DC converter. This converter must prevent large current ripples going through the cell terminals as well as keeping constant the power flow between the FC and the link DC to prevent itself of possible current transient. To connect it to the grid it was used a three-phase DC-AC converter to inject or to absorb current from the grid at reduced ripple distortion and to stabilize the DC link voltage. DC current controllers were designed to curb the link DC and AC currents within reasonable limits. Validation of the model was carried out through computer simulation in order to have an evaluation of the control system behavior both for the stack and for the injection and/or absorption of energy. Also, theoretical results with practical data from a fuel stack were compared with respect to the load variation across its terminals.
Esta dissertação discute a interação entre as células de combustível e o conversor de potência conectado aos seus terminais. Para isto é apresentado um algoritmo modificado para a modelagem dinâmica de conversores chaveados tanto quanto um estudo sobre os efeitos das ondulações de corrente sobre as células. Células do tipo PEM (Proton Exchange Membrane) são estudadas, obtendo-se um modelo razoável para análise das características eletroquímicas e elétricas dos fenômenos envolvidos na geração de energia elétrica com células de combustível. Como interface utiliza-se um conversor CC-CC associado a um filtro do tipo T . Este conversor tem a função de evitar a grande ondulação de corrente absorvida pela célula bem como, manter constante o fluxo de potência entre a FC e o barramento CC evitando-se assim, possíveis transitórios nos terminais da célula. O projeto do conversor de potência prevê a conexão à rede da concessionária através de um conversor CC-CA trifásico para injetar ou absorver corrente da rede com reduzida distorção harmônica e estabilização da tensão do barramento CC. Foram projetados controladores para a corrente CC, a tensão CC e a corrente CA. Como formas de validação foram realizadas simulações para avaliar o comportamento dos sistemas de controle para a pilha e para a injeção e/ou absorção de energia. Também foram comparados os resultados teóricos com os dados práticos de uma pilha submetida à variação de carga em seus terminais.
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Havez, Léon. "Contribution au prototypage virtuel 3D par éléments finis de composants magnétiques utilisés en électronique de puissance." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/16480/7/havez_leon.pdf.

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Le travail présenté dans ce mémoire concerne le prototypage virtuel 3D des composants électromagnétiques d’électronique de puissance, par la technique des éléments finis. La démarche correspond à la volonté de disposer d’outils de simulation multiphysiques 3D toujours plusperformants, notamment dans le contexte de l’intégration en électronique de puissance. Il s’agit de mettre au point des méthodes et desprocédures adaptées à la caractérisation d’inductances, de transformateurs ou de coupleurs multiphasés haute fréquence, dans unenvironnement de conversion statique, avec des formes d’onde de tension et de courant non sinusoïdales. Cela nécessite de connaître le comportement harmonique des composants électromagnétiques sur une large gamme de fréquence, et de tenir compte des spécificités de réalisation comme l’utilisation de bobinages en technologie feuillard ou planar et de noyaux magnétiques en matériaux ferrite. Dans le premier chapitre de ce mémoire, une analyse des limitations actuelles des modèles analytiques et numériques des composants magnétiques HF en électronique de puissance est faite afin de définir les besoins les plus importants qui seront par la suite abordés. Dans cette optique, le choix de la plateforme ouverte de simulation multiphysique en 3D, par éléments finis, COMSOL Multiphysics, a été fait. En effet, l’objectif ici n’est pas de développer un nouveau code de calcul mais de mettre au point un outil de simulation adapté aux problématiques rencontrées en électronique de puissance. Le deuxième chapitre aborde le point très important de la détermination des pertes cuivre HF en tenant compte des effets fréquentiels tels que les effets de peau et de proximité. La problématique des bobinages feuillards ou planars est résolue par l’utilisation d’éléments coques spécifiques. Le troisième chapitre traite de la détermination despertes fer, à haut niveau d’excitation et pour des formes d’onde de champ non sinusoïdales. Sur la base d’abaques de densités de pertesfournies par les constructeurs de matériaux, deux méthodes de calcul sont proposées, l’une en cours de traitement et l’autre en posttraitement. La prise en compte de la non-linéarité est analysée ainsi que la problématique de l’existence localisée de champs tournants. Le quatrième chapitre aborde l’extraction virtuelle des paramètres électriques des composants électromagnétiques multiphasés et la définition de matrices d’impédances (inductances et résistances propres et mutuelles), en fonction de la fréquence. A l’exception des pertes fer non prise en compte ici, cette formalisation permet de traduire finement le comportement harmonique large bande des composants multiphasés. Finalement, le cinquième chapitre propose trois exemples d’utilisation de ce nouvel outil. Le premier exemple aborde ledimensionnement optimal et la caractérisation virtuelle d’un coupleur triphasé de forte puissance. Le deuxième exemple montre l’intérêt dela modélisation harmonique sous la forme de matrices impédances pour simuler le comportement d’un coupleur hexaphasé in-situ dans unconvertisseur de puissance. Enfin le troisième exemple montre la possibilité de lancer des campagnes d’études paramétriques automatisées pour étudier l’évolution d’un ou plusieurs paramètres dimensionnant afin de calculer des tables de réponses d’aide au dimensionnement.
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Gruson, François. "Modulation naturelle généralisée des convertisseurs matriciels pour la variation de vitesse." Thesis, Ecole centrale de Lille, 2010. http://www.theses.fr/2010ECLI0027/document.

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La variation de vitesse des machines électriques est une application très porteuse de l’électronique de puissance. La solution de conversion la plus répandue consiste à connecter en cascade deux convertisseurs statiques et d’effectuer une double conversion (AC/DC/AC). Une autre solution, faiblement répandue dans l’industrie, effectue une conversion directe AC/AC. Ce mémoire effectue une synthèse sur les solutions de conversion directe ainsi que sur les stratégies de modulation des convertisseurs matriciels et matriciels « double étage » dans le but de piloter des machines électriques triphasées à partir d’un réseau alternatif triphasé. Cette synthèse a permis de développer une modulation scalaire généralisée, associée à un modulateur par porteuse, équivalente à la modulation vectorielle et applicable aux différents convertisseurs matriciels. Les modulations, à nombre de commutation réduit par période de découpage, ont été approfondies. Cette généralisation a permis de mettre en évidence une solution réduisant les pertes et améliorant le comportement électromagnétique du dispositif comparativement aux modulations traditionnellement utilisées. La présentation des contraintes réelles (commande rapprochée des interrupteurs, Les protections ainsi que le filtrage) est abordée et a été utilisée pour développer une maquette laboratoire. Les stratégies de modulation ont été implantées expérimentalement et valident l’étude théorique. Enfin, un fonctionnement direct à la fréquence réseau, sans modulation donc à faibles pertes, est proposé. Un fonctionnement particulier est introduit, permettant d’effectuer le transitoire du mode modulé classique au fonctionnement direct non modulé
In the power electronics field, the adjustable speed drives is a growing application for electric motors control. The most common conversion solution is to connect in series two static converters and perform a double conversion (AC/DC/AC). Another solution, hardly proposed by industry, uses a direct AC/AC conversion. This thesis aims to make a direct conversion solutions and matrix converters and ‘‘two stage’’ matrix converters modulation strategies synthesis for the purpose to control three-phase electric motor with a three phase input network. This synthesis has developed a generalized scalar modulation, combined with a carrier wave modulator, equivalent to the space vector modulation and applied to matrix converters and the ‘‘two stage’’ matrix converters. Some attention has been done to reduced the switching number during the modulation period. The generalization allows to propose a modified modulation which reduces the losses and improves the electromagnetic performance compared to the traditional modulations used for these kind of converters. The practical constraint (switches control, protection system and filtering) are discussed and has been used to develop a laboratory prototype. The modulations strategies have been implemented experimentally and validate the theoretical study. Finally, a direct function mode with an equal frequency between the input and output network is proposed, without modulation and therefore low losses. In the last part, a particular operation mode is then introduced, permitting the transient operation between the modulated conventional mode to the direct mode without modulation
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Jalboub, Mohamed K. "Investigation of the application of UPFC controllers for weak bus systems subjected to fault conditions. An investigation of the behaviour of a UPFC controller: the voltage stability and power transfer capability of the network and the effect of the position of unsymmetrical fault conditions." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5699.

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In order to identify the weakest bus in a power system so that the Unified Power Flow Controller could be connected, an investigation of static and dynamic voltage stability is presented. Two stability indices, static and dynamic, have been proposed in the thesis. Multi-Input Multi-Output (MIMO) analysis has been used for the dynamic stability analysis. Results based on the Western System Coordinate Council (WSCC) 3-machine, 9-bus test system and IEEE 14 bus Reliability Test System (RTS) shows that these indices detect with the degree of accuracy the weakest bus, the weakest line and the voltage stability margin in the test system before suffering from voltage collapse. Recently, Flexible Alternating Current Transmission systems (FACTs) have become significant due to the need to strengthen existing power systems. The UPFC has been identified in literature as the most comprehensive and complex FACTs equipment that has emerged for the control and optimization of power flow in AC transmission systems. Significant research has been done on the UPFC. However, the extent of UPFC capability, connected to the weakest bus in maintaining the power flows under fault conditions, not only in the line where it is installed, but also in adjacent parallel lines, remains to be studied. In the literature, it has normally been assumed the UPFC is disconnected during a fault period. In this investigation it has been shown that fault conditions can affect the UPFC significantly, even if it occurred on far buses of the power system. This forms the main contribution presented in this thesis. The impact of UPFC in minimizing the disturbances in voltages, currents and power flows under fault conditions are investigated. The WSCC 3-machine, 9-bus test system is used to investigate the effect of an unsymmetrical fault type and position on the operation of UPFC controller in accordance to the G59 protection, stability and regulation. Results show that it is necessary to disconnect the UPFC controller from the power system during unsymmetrical fault conditions.
Libyan Government
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Jalboub, Mohamed. "Investigation of the application of UPFC controllers for weak bus systems subjected to fault conditions : an investigation of the behaviour of a UPFC controller : the voltage stability and power transfer capability of the network and the effect of the position of unsymmetrical fault conditions." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5699.

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In order to identify the weakest bus in a power system so that the Unified Power Flow Controller could be connected, an investigation of static and dynamic voltage stability is presented. Two stability indices, static and dynamic, have been proposed in the thesis. Multi-Input Multi-Output (MIMO) analysis has been used for the dynamic stability analysis. Results based on the Western System Coordinate Council (WSCC) 3-machine, 9-bus test system and IEEE 14 bus Reliability Test System (RTS) shows that these indices detect with the degree of accuracy the weakest bus, the weakest line and the voltage stability margin in the test system before suffering from voltage collapse. Recently, Flexible Alternating Current Transmission systems (FACTs) have become significant due to the need to strengthen existing power systems. The UPFC has been identified in literature as the most comprehensive and complex FACTs equipment that has emerged for the control and optimization of power flow in AC transmission systems. Significant research has been done on the UPFC. However, the extent of UPFC capability, connected to the weakest bus in maintaining the power flows under fault conditions, not only in the line where it is installed, but also in adjacent parallel lines, remains to be studied. In the literature, it has normally been assumed the UPFC is disconnected during a fault period. In this investigation it has been shown that fault conditions can affect the UPFC significantly, even if it occurred on far buses of the power system. This forms the main contribution presented in this thesis. The impact of UPFC in minimizing the disturbances in voltages, currents and power flows under fault conditions are investigated. The WSCC 3-machine, 9-bus test system is used to investigate the effect of an unsymmetrical fault type and position on the operation of UPFC controller in accordance to the G59 protection, stability and regulation. Results show that it is necessary to disconnect the UPFC controller from the power system during unsymmetrical fault conditions.
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Rosado, Sebastian Pedro. "Analysis of Electric Disturbances from the Static Frequency Converter of a Pumped Storage Station." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34448.

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The present work studies the disturbances created in the electric system of a pumped storage power plant, which is an hydraulic generation facility where the machines can work as turbines or pumps, by the operation of a static frequency converter (SFC). The SFC is used for starting the synchronous machines at the station when in the pump mode. During the starting process several equipment is connected to the SFC being possible to get affected by the disturbances generated. These disturbances mainly include the creation of transient overvoltages during the commutation of the semiconductor devices of the SFC and the introduction of harmonics in the network currents and voltages. This work analyzes the possible effects of the SFC operation over the station equipment based on computer simulations. For this purpose, the complete system was modeled and the starting process simulated in a computer transient simulator program. The work begins with a general review of the effects of electric disturbances over high voltage equipment and in particular of the disturbances generated by power electronics conversion equipment. Then the models for the different kind of equipment present in the system are discussed and formulated. The control system that governs the operation of the SFC during the starting process is analyzed later as well as the operation conditions. Once the model of the system is set up, the harmonic analysis of the electric network is done by frequency domain and time domain methods. Time domain methods are also employed for the analysis of the commutation transient produced by the SFC operation. Finally, the simulation results are used to evaluate the impact of the SFC operation on the station equipment, especially on the generator step up transformer.
Master of Science
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Books on the topic "Static power converters"

1

Koo, K. L. User defined models for static power converters and rotary converter set. Manchester: UMIST, 1996.

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Sood, Vijay K. HVDC and FACTS controllers: Applications of static converters in power systems. Boston, MA: Kluwer Academic, 2003.

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HVDC and FACTS controllers: Applications of static converters in power systems. Boston: Kluwer Academic, 2004.

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Carlson, Chris. The intercession of Saint Dismas: A remembrance and a last confession. [Seattle, Wash.]: C. Carlson, 2006.

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Carlson, Chris. The intercession of Saint Dismas: A remembrance and a last confession. [Seattle, Wash.]: C. Carlson, 2006.

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Sood, Vijay K. HVDC and FACTS Controllers: Applications of Static Converters in Power Systems. Springer, 2013.

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Institute of Electrical and Electronics Engineers. Standards Coordinating Committee on Dispersed Storage and Generation., ed. IEEE recommended practice: Test procedure for utility-interconnected static power converters. New York, NY: Institute of Electrical and Electronics Engineering, 1989.

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Sood, Vijay K. HVDC and FACTS Controllers: Applications of Static Converters in Power Systems (Power Electronics and Power Systems). Springer, 2004.

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IEEE Power Engineering Society. Power Systems Relaying Committee. Working Group C-5 Static Power Converter Serving as Interface Package., ed. Static power converters of 500 kW or less, serving as the relay interface package for non-conventional generators. Piscataway, NJ: IEEE Power Engineering Society, 1993.

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Efficient design in a DC to DC converter unit. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2002.

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Book chapters on the topic "Static power converters"

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Leonhard, Werner. "Static Converter as a Power Actuator for DC Drives." In Power Systems, 97–138. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56649-3_9.

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Shukla, Anshuman, and Alireza Nami. "Multilevel Converter Topologies for STATCOMs." In Static Compensators (STATCOMs) in Power Systems, 35–82. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-281-4_2.

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Leonhard, Werner. "The Static Converter Used as a Power Actuator." In Control of Electrical Drives, 84–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-662-11371-4_9.

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Kabalci, Ersan. "Converter and Output Filter Topologies for STATCOMs." In Static Compensators (STATCOMs) in Power Systems, 1–34. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-281-4_1.

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Leonhard, Werner. "The Static Converter as Power Actuator for DC Drives." In Control of Electrical Drives, 95–133. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-97646-9_9.

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Djurica, Miodrag, and Johan H. Huijsing. "Low Power Sigma-Delta Analog-to-Digital Converter Interface for Biomedical Measurement System." In Sensor Technology in the Netherlands: State of the Art, 269–73. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5010-1_43.

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Santiccioli, Alessio. "Inductorless Frequency Synthesizers for Low-Cost Wireless." In Special Topics in Information Technology, 37–50. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62476-7_4.

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AbstractThe quest for ubiquitous wireless connectivity, drives an increasing demand for compact and efficient means of frequency generation. Conventional synthesizer options, however, generally trade one requirement for the other, achieving either excellent levels of efficiency by leveraging LC-oscillators, or a very compact area by relying on ring-oscillators. This chapter describes a recently introduced class of inductorless frequency synthesizers, based on the periodic realignment of a ring-oscillator, that have the potential to break this tradeoff. After analyzing their jitter-power product, the conditions that ensure optimum performance are derived and a novel digital-to-time converter range-reduction technique is introduced, to enable low-jitter and low-power fractional-N frequency synthesis. A prototype, which implements the proposed design guidelines and techniques, has been fabricated in 65 nm CMOS. It occupies a core area of 0:0275 mm$$^{2}$$ 2 and covers the 1:6-to-3:0 GHz range, achieving an absolute rms jitter (integrated from 30 kHz-to-30 MHz) of 397 fs at 2:5 mW power. With a corresponding jitter-power figure-of-merit of −244 dB in the fractional-N mode, the prototype outperforms prior state-of-the-art inductorless frequency synthesizers.
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"Electric Machines and Static Converters." In Fundamentals of Electric Power Engineering, 213–14. Hoboken, New Jersey: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118922583.part3.

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"Induction Heating Power Supplies." In Elements of Induction Heating, 47–75. ASM International, 1988. http://dx.doi.org/10.31399/asm.tb.eihdca.t65220047.

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Abstract Besides the induction coil and workpiece, the induction generator (source of ac power) is probably the most important component of an overall induction heating system. Such equipment is typically rated in terms of its frequency and maximum output power (in kilowatts). This chapter addresses the selection of power supplies in terms of these two factors as well as the operational features of different types of sources. The six different types of power supplies for induction heating applications covered in this chapter are line-frequency supplies, frequency multipliers, motor-generators, solid-state (static) inverters, spark-gap converters, and radio-frequency power supplies. The chapter discusses the design and characteristics of each of the various types of power supplies.
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Matt, Daniel, Philippe Enrici, Florian Dumas, and Julien Jac. "Optimisation of the Association of Electric Generator and Static Converter for a Medium Power Wind Turbine." In Fundamental and Advanced Topics in Wind Power. InTech, 2011. http://dx.doi.org/10.5772/17422.

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Conference papers on the topic "Static power converters"

1

"5B. Static power converters." In 1985 IEEE Power Electronics Specialists Conference. IEEE, 1985. http://dx.doi.org/10.1109/pesc.1985.7070994.

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Dupont, Fabricio Hoff, Jordi Zaragoza Bertomeu, Cassiano Rech, and Jose Renes Pinheiro. "Mathematical efficiency modeling of static power converters." In 2015 IEEE 13th Brazilian Power Electronics Conference (COBEP) and 1st Southern Power Electronics Conference (SPEC). IEEE, 2015. http://dx.doi.org/10.1109/cobep.2015.7420263.

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McCoy, C. E. "Static power converters, harmonics, the power system and you." In [1992] Record of Conference Papers Industry Applications Society 39th Annual Petroleum and Chemical Industry Conference. IEEE, 1992. http://dx.doi.org/10.1109/pcicon.1992.229303.

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El-Genk, Mohamed S., and Jean-Michel P. Tournier. "Static Converter for High Energy Utilization, Modular, Small Nuclear Power Plants." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22040.

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This paper presents and analyzes the performance of high efficiency, high total energy utilization, static converters, which could be used in conjunction with small nuclear reactor plants in remote locations and in undersea applications, requiring little or no maintenance. The converters consist of a top cycle of Alkali Metal Thermal-to-Electric Conversion (AMTEC) units and PbTe thermoelectric (TE) bottom cycle. In addition to converting the reactor thermal power to electricity at 1150 K or less, at a thermodynamic efficiency in the low to mid thirties, the heat rejection from the TE bottom cycle could be used for space heating, industrial processing, or sea water desalination. The results indicated that for space heating applications, where the rejected thermal power from the TE bottom cycle is removed by natural convection of ambient air, a total utilization of the reactor thermal power of > 80% is possible. When operated at 1030 K, potassium AMTEC/TE converters are not only more efficient than the sodium AMTEC/TE converters but produce more electrical power. The present analysis showed that a single converter could be sized to produce up to 100 kWe and 70 kWe, for the Na-AMTEC/TE units when operating at 1150 K and the K-AMTEC/TE units when operating at 1030 K, respectively. Such modularity is an added advantage to the high-energy utilization of the present AMTEC/TE converters.
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Singh, Alka, and Bhim Singh. "Performance evaluation of power converters with distribution static compensator." In 2010 Power India. IEEE, 2010. http://dx.doi.org/10.1109/pedes.2010.5712484.

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Tennakoon, S. B. "Multi-level converters for static VAr compensation." In IEE Colloquium on Update on New Power Electronic Techniques. IEE, 1997. http://dx.doi.org/10.1049/ic:19970530.

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Mendez, Rodrigo, Daniel Sbarbaro, and Jose Espinoza. "High dynamic and static performance FCS-MPC strategy for static power converters." In 2016 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2016. http://dx.doi.org/10.1109/ecce.2016.7855146.

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Barbosa, Paula Stael Silva, Jessica Bertolino Gregorio, Matusalem Martins Lanes, and Nata Franco Soares de Bem. "Flexible control system for experimental evaluation of static converters applied to DC/DC converters." In 2017 Brazilian Power Electronics Conference (COBEP). IEEE, 2017. http://dx.doi.org/10.1109/cobep.2017.8257295.

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Purwadi, Agus, Kus Adi Nugroho, Arwindra Rizqiawan, and Pekik Argo Dahono. "A new approach to synthesis of static power converters." In 2009 International Conference on Electrical Engineering and Informatics (ICEEI). IEEE, 2009. http://dx.doi.org/10.1109/iceei.2009.5254741.

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Prado, Edemar de Oliveira, Hamiltom Confortin Sartori, and Jose Renes Pinheiro. "How to select power transistors for static converters applications?" In 2018 13th IEEE International Conference on Industry Applications (INDUSCON). IEEE, 2018. http://dx.doi.org/10.1109/induscon.2018.8627069.

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Reports on the topic "Static power converters"

1

Mehrotra, Vivek. Integrated Power Chip Converter for Solid State Lighting. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1569260.

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