Conversores CC-CC com Elevado Ganho Estático Baseados na Associação e na Integração dos Conversores Boost Modificado e SEPIC-André M. Senderski Universidade Tecnológica Federal do Paraná Francisco J. Viglus Universidade Tecnológica Federal do Paraná Mário L. da Silva Martins Universidade Federal de Santa Maria Carlos Henrique Illa Font Universidade Tecnológica Federal do Paraná

 

Conversores CC-CC com Elevado Ganho Estático Baseados na Associação e na Integração dos Conversores Boost Modificado e SEPIC

André M. Senderski Universidade Tecnológica Federal do Paraná

 Francisco J. Viglus Universidade Tecnológica Federal do Paraná 

 Mário L. da Silva Martins Universidade Federal de Santa Maria 

 Carlos Henrique Illa Font Universidade Tecnológica Federal do Paraná 

 ABSTRACT 

This paper presents a study of two non-isolated DC-DC converter topologies with high static gain, basedon the association and integration of modified Boost and SEPIC converters. The associated topology usestwo controlled switches, while the integrated one employs only one. When performing the integration, theswitching cell known asR2P2is obtained. The proposed converters achieve high voltage gains ,making them suitable for applications where a reduced number of components is desirable, commonconnection between input and output, simplifying the control and command circuit. The paper presentsthe details of the derivation of the topologies and the operating principle including the topological stagesand main waveforms, in addition to the comparative analysis with similar converters previously proposedin the literature. To validate the analyses, two prototypes with a nominal power of 200 W, dimensionedto operate with an input voltage of 26 V and an output voltage of 260 V are presented. The convertersoperate at a switching frequency of 50 kHz, with an efficiency of 93.4 % for the associated converter and89.2 % for the integrated converter at rated power.

VIEW FULL ARTICLE: https://journal.sobraep.org.br/index.php/rep/article/view/1031/923

Thermoelectric Characterization of IGBT Power Modules: An Approach by Static and Dynamic Methods-Deivid F. de Souza1,∗, Diego S. Greff11Federal University of Santa Catarina, PPGESE, Joinville, SC, Brazil

 

Eletronica de Potencia, Rio de Janeiro, v. 30, e202510, 2025 Thermoelectric Characterization of IGBT Power Modules: An Approach by Static and Dynamic Methods-Deivid F. de Souza1,∗, Diego S. Greff11Federal University of Santa Catarina, PPGESE, Joinville, SC, Brazil

 ABSTRACTThis study evaluates IGBT modules with a focus on efficiently measuring their thermalimpedance, a critical factor in reliability assessments. The research employs the Thermo Electric SensitiveParameter method to measure the Virtual Junction Temperature and obtain the Thermal Impedancecurve. These experimental results are compared with datasheet values, using power modules without abaseplate. Two methodologies, dynamic and static, are utilized, both demonstrating consistent performancein evaluating thermal characteristics. The study also addresses the importance of accounting for non-linearity in thermal conductance due to temperature dependency, which is essential for accurate thermalcharacterization. Additionally, it explores the potential for measuring the Thermal Impedance betweenJunction and Case in power modules without a baseplate, offering a comprehensive understanding ofthermal performance.

VIEW FULL PAPER : https://journal.sobraep.org.br/index.php/rep/article/view/995/893

A Review of Boost Converter Analysis and Design in Aerospace Applications-E. Mattos, A. M. S. S. Andrade, G. V. Hollweg, J. R. Pinheiro and M. L. S. Martins

 Abstract— Often, for simplicity, it is adopted for boost converter inductor and capacitor design the inductor current variation (Δ IL), defining it as an output current percentage. However, this kind of methodology does not guarantee the inductor and capacitor minimum values that assure the converter working on continuous mode operation, discontinuous mode operation, or when it is desired to operate the converter at the boundary between these modes. The aim of this paper is to present a theoretical study of the no-losses boost converter. The principle of operation and static analysis are developed in detail for operation on the following modes: continuous mode operation, discontinuous current mode operation and at the boundary between these modes. During this analysis, all four variables (input and output currents and voltages) are considered as design choices for independent variables that determine the boundary between continuous and discontinuous modes. In addition, a design methodology is presented to illustrate the theoretical procedures, which guarantee the inductor and capacitor minimum values according to the desired operation mode. Finally, the simulation results proof the theoretical analysis.

VIEW FULL PAPER: https://www.ufsm.br/app/uploads/sites/737/2019/08/23_-_A_REVIEW_OF_BOOST_CONVERTER_ANALYSIS_AND_DESIGN_IN_AEROSPACE_APPLICATIONS.pdf

Radiation resistance properties of electronic devices interacting with different radiation sources Sapienza University of Rome PhD in Accelerator Physics (XXXVI cycle) Beatrice D’Orsi -PhD thesis. Sapienza University of Rome

 Radiation resistance properties of electronic devices interacting with different radiation sources Sapienza University of Rome PhD in Accelerator Physics (XXXVI cycle) 

 Abstract In high-radiation environments, such as those found in high-energy physics, space, and ignition facilities, it is paramount to employ components and devices capable of withstanding the stressful conditions imposed by these harsh settings. To understand the radiation-induced effects and ensure the proper functioning of systems used in these hostile conditions, preliminary tests of the devices against radiation are necessary. In this joint doctoral thesis, comprising work performed at La Sapienza University of Rome, the Institut National de la Recherche Scientifique (INRS) in Canada, and the ENEA Research Centers of Casaccia and Frascati in Italy, a study of radiationinduced damage on electronic devices was carried out. Various radiation sources and characterization methods were employed for this purpose. At the Advanced Laser Light Source (ALLS) laboratory of INRS, laser-accelerated protons with a broad energy spectrum were used to test electronics with a new and innovative stress test source. More conventional sources for irradiation tests, such as 60Co gamma radiation available at the Calliope facility of the ENEA Casaccia R.C., and protons and neutrons from the TOP-IMPLART facility and the Frascati Neutron Generator, respectively, located at the ENEA Frascati R.C., were also used. To further enrich the characterization of the electronic devices, electron irradiations are planned at the REX facility of the ENEA Frascati R.C. To determine the most suitable irradiation conditions at REX, a dosimetric intercalibration between the Calliope facility and the REX facility was performed within the framework of the ASI Supported Irradiation Facilities (ASIF) program. The results of this intercalibration are presented. In the final part of the work, the radiation resistance properties of two types of electronic devices were examined by performing parametric tests on the components before and after irradiation with various radiation sources. Additionally, the Total Ionizing Dose (TID) effect and the displacement damage caused by the Non-Ionizing Energy Loss (NIEL) contribution were analyzed for all the stress tests performed. Specifically, for each radiation source used, the dose deposited by ionizing processes and the dose deposited by non-ionizing processes were calculated. This procedure made it possible to determine the dose required by different types of radiation to cause the same level of damage, allowing a comparison of the irradiation efficiency of laser-driven protons with conventional radiation sources.

VIEW FULL THESIS : https://espace.inrs.ca/id/eprint/16483/1/D%27Orsi-B-D-Fevrier2025.pdf

Étude, conception et réalisation de circuits de commande d'IGBT de forte puissance-par Pierre LEFRANC Ingénieur Supélec-l'INSTITUT NATIONAL DES SCIENCES APPLIQUÉES DE LYON-THÈSE GRADE DE DOCTEUR ÉCOLE DOCTORALE : ÉLECTRONIQUE

 

THÈSE présentée devant l'INSTITUT NATIONAL DES SCIENCES APPLIQUÉES DE LYON pour obtenir LE GRADE DE DOCTEUR ÉCOLE DOCTORALE : ÉLECTRONIQUE

 ÉLECTROTECHNIQUE AUTOMATIQUE FORMATION DOCTORALE : GÉNIE ÉLECTRIQUE par Pierre LEFRANC 

Ingénieur Supélec Étude, conception et réalisation de circuits de commande d'IGBT de forte puissance

Introduction générale 

Depuis ses débuts en 1980, l’IGBT a pris une importance énorme pour arriver à l’heure actuelle à concurrencer tous les autres composants de puissance : bipolaire, MOSFET, GTO, ... Une large gamme de modules IGBT est actuellement disponible : de quelques dizaines d’Ampère à quelques kilo-Ampère et de 300V à 6500V. Dans les convertisseurs de puissance, les modules IGBT sont associés à une carte appelée "driver". Le driver a pour fonction de piloter son module IGBT associé et de garantir son intégrité en cas de défauts (surintensité et surtension). Le driver constitue un sous système au sein du convertisseur. Il devient aussi important que le module IGBT. L’enjeu est de taille car certains modules coûtent plus de 1000C l’unité. Le travail présenté dans ce mémoire a pour but d’étudier la conception et la réalisation d’une gamme de circuits de commande de modules IGBT (gamme de trois drivers). Ces drivers répondent à un besoin industriel et seront produits en moyenne série en technologie hybride (circuit imprimé et composants traditionnels). Le premier et second chapitre de ce mémoire constituent un état de l’art des modules IGBT et des drivers d’IGBT. Les différentes technologies de puces IGBT propres aux différents constructeurs sont exposées et expliquées afin de clarifier l’abondance de technologies de puces. Les fonctions de base des drivers d’IGBT sont exposées ainsi que les solutions technologiques classiques associées. Dans le troisième chapitre, une modélisation des puces IGBT est proposée afin d’étudier leurs commutations en vue de leur commande. On propose également de prendre en compte les effets inductifs dus au câblage dans les boîtiers des modules IGBT. Afin de finaliser la modélisation des puces IGBT, nous proposons l’étude du phénomène d’avalanche dynamique présent sur certaines technologies de puces à l’aide d’équations simples puis de simulations par éléments finis. Enfin, nous proposons l’analyse et la conception des fonctions élémentaires propres aux drivers d’IGBT. Des méthodes de conception, des simulations et des résultats expérimentaux sont proposés.

VER TESIS COMPLETA EN LINK ORIGINAL:

https://theses.insa-lyon.fr/publication/2005ISAL0097/these.pdf

CARREGADOR DE BATERIAS APLICAÇÃO EM VEÍCULOS ELÉTRICOS UNIVERSIDADE FEDERAL DO CEARÁ CENTRO DE TECNOLOGIA PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA-HERMINIO MIGUEL DE OLIVEIRA FILHO

 Oliveira Filho, H. M., “Conversor Estático de Três Estágios para Carregamento de Baterias a partir de Sistemas Eólicos”, Universidade Federal do Ceará – UFC, 2010, 165p. 

ABSTRACT

Este trabalho apresenta a análise, projeto, simulação e resultados experimentais de um conversor estático de três estágios para carregamento de baterias a partir de sistemas eólicos. A escolha da estrutura foi obtida através de uma breve revisão bibliográfica. O sistema utiliza um conversor boost em cascata com uma ponte de Graetz, que permite a implementaçao de um Sistema de Rastreamento do Ponto de Máxima Potência (Maximum Power Point Tracking - MPPT) e a redução da rotação da máquina numa situação de sobrecarga nas baterias. Um conversor buck é conectado em série com um conversor boost, para garantir um barramento de tensão constante entre as duas topologias. Com isso, consegue-se obter a extração de potência para todas as faixas de velocidade do vento disponíveis, além de um carregamento de baterias através dos métodos de carga convencionais. O projeto completo do carregador de baterias proposto, com os circuitos de potência, controle e supervisão são apresentados e desenvolvidos considerando um sistema com potência de 300W, com possibilidade de carregar um banco de baterias de 12V ou 24V. Resultados de simulação são apresentados para comprovar a existência dos pontos de máxima potência no gerador eólio-elétrico e verificar o comportamento dos conversores projetados. Por fim, são apresentados os resultados experimentais estáticos e dinâmicos do protótipo desenvolvido, necessários para validar a funcionalidade do estudo proposto.

VER TESE COMPLETA NO SEGUINTE ENLACE: 

http://www.gpec.ufc.br/trabalhos/Oliveira%20Filho%20-%202010.pdf