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Dissertations / Theses on the topic 'Power Electronics Reliability'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

PIUMATTI, DAVIDE. "Reliability in Power Electronics and Power Systems." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2918006.

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2

Sadik, Diane-Perle. "On Reliability of SiC Power Devices in Power Electronics." Doctoral thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-207763.

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Silicon Carbide (SiC) is a wide-bandgap (WBG) semiconductor materialwhich has several advantages such as higher maximum electric field, lowerON-state resistance, higher switching speeds, and higher maximum allowablejunction operation temperature compared to Silicon (Si). In the 1.2 kV - 1.7kV voltage range, power devices in SiC are foreseen to replace Si Insulatedgatebipolar transistors (IGBTs) for applications targeting high efficiency,high operation temperatures and/or volume reductions. In particular, theSiC Metal-oxide semiconductor field-effect transistor (MOSFET) – which isvoltage contro

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3

Wang, Yun. "Characterization and reliability of Ag nanoparticle sintered joint for power electronics modules." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37296/.

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Nowadays, numerous power electronics application requires operation at high temperatures. In order to address increasing change of reliability problems in power die attachments for high temperature and high reliability applications, sintering Ag nanoparticles has been used as bonding material for this work. Firstly, quantitative microstructure characterization of as-sintered Ag joints has been carried out. The resulting normalized thickness, pore size and porosity decreased, and grain size increased with increasing the sintering time. A time dependence of the form t1/n with n close to 2 or 3 c

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4

Liu, Xingsheng. "Processing and Reliability Assessment of Solder Joint Interconnection for Power Chips." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26691.

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Circuit assembly and packaging technologies for power electronics have not kept pace with those for digital electronics. Inside those packaged power devices as well as the state-of-the-art power modules, interconnection of power chips is accomplished with wirebonds. Wirebonds in power devices and modules are prone to resistance, noise, parasitic oscillations, fatigue and eventual failure. Furthermore, there has been an increase demand for higher power density and better efficiency for power converters. Power semiconductor suppliers have been concentrating on improving device structure, den

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5

Bonyadi, Roozbeh. "Reliability assessment and modelling of power electronic devices for automotive application and design." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/90139/.

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The emergence of the hybrid electric vehicle and electric vehicles (HEV and EV) requires the reliability assessment of power electronic devices used in the inverters. This includes the electro-thermal reliability of bipolar devices such as IGBTs and PiN diodes and more recently, the SiC MOSFETs since the SiC technology is not as mature as their bipolar counterparts. This research, in its own capacity, through the use of accurate compact models, investigates the switching performance and characteristics of silicon IGBTs, PiN diodes and SiC MOSFETs. The need for higher power densities and fast d

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Colmenares, Juan. "Extreme Implementations of Wide-Bandgap Semiconductors in Power Electronics." Doctoral thesis, KTH, Elkraftteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192626.

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Wide-bandgap (WBG) semiconductor materials such as silicon carbide (SiC) and gallium-nitride (GaN) allow higher voltage ratings, lower on-state voltage drops, higher switching frequencies, and higher maximum temperatures. All these advantages make them an attractive choice when high-power density and high-efficiency converters are targeted. Two different gate-driver designs for SiC power devices are presented. First, a dual-function gate-driver for a power module populated with SiC junction field-effect transistors that finds a trade-off between fast switching speeds and a low oscillative perf

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7

Soon, John Long. "Fault-Tolerant Design and Implementation for Non-Isolated Reconfigurable DC/DC Converters." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/20266.

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This thesis mainly focuses on improving the conventional DC-DC converter topology by utilizing the redundancy concept (N+1) and fault-tolerant design to maintain an uninterrupted output operation even on primary switch failure. The proposed fault-tolerant converter (FTC) involves merging three configurations namely buck, boost and buck-boost to derive a new converter structure along with bidirectional capabilities. The proposed FTC is equipped with a single redundant switch and shared with one coupled inductor and one capacitor (1L-1C) to be capable of achieving the step-up and step-down opera

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8

Adderly, Shawn. "Reviewing Power Outage Trends, Electric Reliability Indices and Smart Grid Funding." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/531.

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As our electric power distribution infrastructure has aged, considerable investment has been applied to modernizing the electrical power grid through weatherization and in deployment of real-time monitoring systems. A key question is whether or not these investments are reducing the number and duration of power outages, leading to improved reliability. Statistical methods are applied to analyze electrical disturbance data (from the Department of Energy, DOE) and reliability index data (from state utility public service commission regulators) to detect signs of improvement. The number of instal

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9

Farhadi, Mustafa. "Hybrid Energy Storage Implementation in DC and AC Power System for Efficiency, Power Quality and Reliability Improvements." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2471.

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Battery storage devices have been widely utilized for different applications. However, for high power applications, battery storage systems come with several challenges, such as the thermal issue, low power density, low life span and high cost. Compared with batteries, supercapacitors have a lower energy density but their power density is very high, and they offer higher cyclic life and efficiency even during fast charge and discharge processes. In this dissertation, new techniques for the control and energy management of the hybrid battery-supercapacitor storage system are developed to improv

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10

De, Santi Carlo. "Degradation mechanisms of devices for optoelectronics and power electronics based on Gallium Nitride heterostructures." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423670.

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Gallium Nitride is rapidly emerging as a promising material for electronic devices in various fields. Since it is a direct bandgap semiconductor it can be used for highly efficient light emitting devices (Light Emitting Diodes and Laser Diodes) and the possibility of growing alloys containing Aluminum and Indium allow for the selection of the peak wavelength along the whole UV-green part of the radiation spectrum. Moreover, the high electron mobility, the ability of withstand high electric fields and the good thermal dissipation make GaN-based diodes and transistors devices with a good potenti

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11

Cao, Xiao. "Optimization of Bonding Geometry for a Planar Power Module to Minimize Thermal Impedance and Thermo-Mechanical Stress." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77252.

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This study focuses on development a planar power module with low thermal impedance and thermo-mechanical stress for high density integration of power electronics systems. With the development semiconductor technology, the heat flux generated in power device keeps increasing. As a result, more and more stringent requirements were imposed on the thermal and reliability design of power electronics packaging. In this dissertation, a boundary-dependent RC transient thermal model was developed to predict the peak transient temperature of semiconductor device in the power module. Compared to conventi

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12

Siraj, Ahmed Shahnewaz. "Impact of Repetitive Short Circuit Transients on the Conducted Electromagnetic Interference of SiC and Si Based Power Devices." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1622056294414037.

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13

Hascoët, Stanislas. "Mise en oeuvre de nouveaux matériaux d’assemblage dans les modules multipuces de puissance (MCM)." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0123/document.

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L’introduction des composants grand gap dans le domaine de l’électronique de puissance requiert une optimisation de son environnement (packaging). En effet, les températures auxquelles peuvent être utilisés ce type de composants sont bien souvent plus grandes que celles supportables par le reste du module. De nouvelles techniques d’assemblage sont à l’étude et notamment certaines à base de frittage d’argent. Ces procédés présentent l’avantage de réaliser l’assemblage à une température modérée (similaire à celle d’une brasure), mais toutefois inférieure à celle de fusion de l’argent. La tempéra

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14

Zhao, Xin. "Reliable clock and power delivery network design for three-dimensional integrated circuits." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45881.

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The main objective of this thesis is to design reliable clock-distribution networks and power-delivery networks for three-dimensional integrated circuits (3D ICs) using through-silicon vias (TSVs). This dissertation supports this goal by addressing six research topics. The first four works focus on 3D clock tree synthesis for low power, pre-bond testability, TSV-induced obstacle avoidance, and TSV utilization. The last two works develop modeling approaches for reliability analysis on 3D power-delivery networks. In the first work, a clock synthesis algorithm is developed for low-power and low-

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15

Jeon, Ham Hee. "Highly efficient linear CMOS power amplifiers for wireless communications." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/47528.

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The rapidly expanding wireless market requires low cost, high integration and high performance of wireless communication systems. CMOS technology provides benefits of cost effectiveness and higher levels of integration. However, the design of highly efficient linear CMOS power amplifier that meets the requirement of advanced communication standards is a challenging task because of the inherent difficulties in CMOS technology. The objective of this research is to realize PAs for wireless communication systems that overcoming the drawbacks of CMOS process, and to develop design approaches tha

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16

Dang, Hongmei. "Nanostructured Semiconductor Device Design in Solar Cells." UKnowledge, 2015. http://uknowledge.uky.edu/ece_etds/77.

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We demonstrate the use of embedded CdS nanowires in improving spectral transmission loss and the low mechanical and electrical robustness of planar CdS window layer and thus enhancing the quantum efficiency and the reliability of the CdS-CdTe solar cells. CdS nanowire window layer enables light transmission gain at 300nm-550nm. A nearly ideal spectral response of quantum efficiency at a wide spectrum range provides an evidence for improving light transmission in the window layer and enhancing absorption and carrier generation in absorber. Nanowire CdS/CdTe solar cells with Cu/graphite/silver p

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17

Atasoy, Halil Ibrahim. "Design And Fabrication Of Rf Mems Switches And Instrumentation For Performance Evaluation." Thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608831/index.pdf.

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This thesis presents the RF and mechanical design of a metal-to-metal contact RF MEMS switch. Metal-to-metal contact RF MEMS switches are especially preferred in low frequency bands where capacitive switches suffer from isolation due to the limited reactance. Frequency band of operation of the designed switch is from DC to beyond X-band. Measured insertion loss of the structure is less than 0.2 dB, return loss is better than 30 dB, and isolation is better than 20 dB up to 20 GHz. Isolation is greater than 25 dB below 10 GHz. Hence, for wideband applications, this switch offers very low loss

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18

Asllani, Besar. "Caractérisation et modélisation de diodes Schottky et JBS SiC-4H pour des applications haute tension." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI147/document.

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La diode Schottky SiC est un composant qui peut potentiellement remplacer la diode PiN Si dans les applications de puissance. Effectivement, la tenue en tension élevée, la faible résistivité, ainsi que l’indépendance de la température du courant de recouvrement rendent cette diode idéale pour les convertis- seurs de puissance DC/DC. Cependant, face à l’abondance des composants Si sur le marché, la diode Schottky rencontre une certaine réticence. Malgré les nombreuses démonstrations de systèmes électroniques de puissance réalisés, la fiabilité de cette technologie n’arrive pas à convaincre. Cet

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19

Yodwong, Burin. "Contribution to the development of a high-power low-voltage DC-DC converter for proton exchange membrane electrolyzer applications." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0064.

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Cette thèse de doctorat a été réalisée dans le cadre d’un accord de cotutelle entre l’Université de Lorraine, IUT de Longwy, laboratoire GREEN et Renewable Energy Research Centre (RERC), King Mongkut’s University of Technology North Bangkok, Thaïlande. Par ailleurs, cette thèse s’inscrit dans le cadre du programme de bourses Franco-Thaï 2019 soutenu par l’ambassade de France en Thaïlande et Campus France. L’objectif principal de cette thèse est de développer un convertisseur DC-DC dévolteur basse tension haute puissance et un algorithme de contrôle non linéaire pour des applications d’électrol

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20

Lemenager, Maxime. "Atomic Layer Deposition of thin dielectric films for high density and high reliability integrated capacitors." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI085.

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Le stockage d’énergie dans les systèmes embarqués fait toujours l’objet d’importants efforts de R&D car il nécessite une constante diminution du volume occupé par les composants électroniques. Il apparaît que la taille des composants discrets que sont les condensateurs est un des freins à la miniaturisation des dispositifs finaux. Bien que des technologies, principalement basées sur la gravure profonde du silicium à l’échelle micrométrique, aient permis des avancées considérables, elles se montrent dorénavant limitées en termes de densité d’intégration. De ce fait, Murata IPS a développé u

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21

Renaud, Antoine. "Modélisations et méthodes numériques pour l’intégration d’une solution de suivi de vieillissement d’un assemblage de puissance." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0052/document.

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Ces travaux s’inscrivent dans le cadre du projet ANR "CAPTIF" (CAPTeurs innovants Intégrés et logiciels au coeur d’un dispositif d’électronique de puissance). Ce projet s’intéresse aux solutions de suivi de vieillissement en temps réel de modules d’électronique de puissance pour réduire les coûts de maintenance et augmenter la fiabilité des systèmes de conversion d’énergie.Les limitations des modèles de fiabilité actuels sont mises en évidence et conduisent à la recherche d’une approche plus représentative des mécanismes entraînant la défaillance des modules de puissance et à une remise en que

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22

Terrier, Viktor. "North European Power Systems Reliability." Thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202581.

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The North European power system (Sweden, Finland, Norway, Denmark, Estonia, Latvia and Lithuania) is facing changes in its electricity production. The increasing share of intermittent power sources, such as wind power, makes the production less predictable. The decommissioning of large plants, for environmental or market reasons, leads to a decrease of production capacity while the demand can increase, which is detrimental to the power system reliability. Investments in interconnections and new power plants can be made to strengthen the system. Evaluating the reliability becomes essential to d

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23

Santini, Thomas. "Contribution à l'étude de la fiabilité des MOSFETs en carbure de silicium." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI021/document.

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Ces dernières années ont vu apparaître sur le marché les premiers transistors de puissance de type MOSFET en carbure de silicium. Ce type de composant est particulièrement adapté à la réalisation d’équipement électrique à haut rendement et capable de fonctionner à haute température. Néanmoins, la question de la fiabilité doit être posée avant de pouvoir envisager la mise en œuvre de ces composants dans des applications aéronautiques ou spatiales. Les mécanismes de défaillance liés à l’oxyde de grille ont pendant longtemps retardé la mise sur le marché des transistors à grille isolée en carbure

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24

Samavatian, Vahid. "A Systematic Approach to Reliability Assessment of DC-DC Power Electronic Converters." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT028.

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La fiabilité et la sureté de fonctionnement de l'électronique de puissance jouent un rôle majeur aujourd'hui dans l'industrie. Cette thèse propose un nouveau cadre d'étude de la fiabilité à partir de deux méthodes afin d'améliorer la précision des études de fiabilité : une analyse utilisant la méthode des système dégradés multi état, et une analyse par intervalles. La considération des effets de dégradation propres et couplés de chaque composant est également une problématique qu'il reste aujourd'hui à étudier et qui est traitée dans ce travail.L'étude de la fiabilité par intervalles permet d'

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25

Wang, Lei. "Fuzzy knowledge based reliability evaluation and its application to power generating system." Thesis, Queen Mary, University of London, 1994. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1741.

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The method of using Fuzzy Sets Theory(FST) and Fuzzy Reasoning(FR) to aid reliability evaluation in a complex and uncertain environment is studied, with special reference to electrical power generating system reliability evaluation. Device(component) reliability prediction contributes significantly to a system's reliability through their ability to identify source and causes of unreliability. The main factors which affect reliability are identified in Reliability Prediction Process(RPP). However, the relation between reliability and each affecting factor is not a necessary and sufficient one.

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26

Zhuang, Xing. "A New Reliability Assessment Model for Power Electronic Modules Considering Failure Mechanism Interaction." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27615.

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A reliability prediction method is proposed to determine the lifetime of IGBTs (Insulated Gate Bipolar Transistors) under power cycling test based on the performance of solder joint and wire bond. The failure characteristics of solder joint and wire bond are captured via selected PoF model respectively. To provide precise reliability prediction, PoF models are converted into probabilistic models. In addition, the failure interaction between wire bond and solder joint is studied. Wire bond lift-off is treated as the predominant failure mode based upon experiments from literature and solder join

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27

Dongale, Prasad J. "Equipment condition assessment and its importance in estimation and prediction of power system reliability." Thesis, WIchita State University, 2008. http://hdl.handle.net/10057/2027.

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Transmission and Distribution Electric Utilities have a vast amount of assets distributed over their system in the form of various equipment. As part of an asset management program, electric utilities keep focusing on the inspection and maintenance activities of these assets to improve system performance, reliability, and to ensure cost-effective expenditures. Therefore methodology that will reflect these inspection and maintenance efforts in terms of overall condition of the equipment is needed. Also techniques are needed to assess the impact of inspection and maintenance activities on the ov

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Dongale, Prasad J. Jewell Ward. "Equipment condition assessment and its importance in estimation and prediction of power system reliability." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2027.

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29

Loayza, Ramirez Jorge Miguel. "Study and characterization of electrical overstress aggressors on integrated circuits and robustness optimization of electrostatic discharge protection devices." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI044.

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Cette thèse de doctorat s’inscrit dans la thématique de la fiabilité des circuits intégrés dans l’industrie de la microélectronique. Un circuit intégré peut être exposé à des agresseurs électriques potentiellement dangereux pendant toute sa durée de vie. Idéalement, les circuits devraient pouvoir encaisser ces excès d’énergie sans perdre leur fonctionnalité. En réalité, des défaillances peuvent être observées lors de tests de qualification ou en application finale. Il est donc dans l’intérêt des fabricants de réduire ces défaillances. Actuellement, il existe des circuits de protection sur puce

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30

Dabla, Essi Ahoefa. "Approche bayesienne multiéchelle pour la modélisation de la fiabilité d'un module de puissance en environnement ferroviaire." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0102.

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Le contrôle de la fiabilité des composants électroniques critiques est un des enjeux des acteurs du secteur ferroviaire. Les modules de puissance à IGBT (Insulated Gate Bipolar Transistors) appartiennent à cette liste de composants. Ils sont soumis à de fortes contraintes correspondant à celles rencontrées dans des environnements ferroviaires sévères. Les conditions environnementales rencontrées dans l’exploitation ferroviaire et les fortes exigences en termes de disponibilité imposent des niveaux de fiabilité élevés aux IGBT. Dans une optique d’amélioration de leur fiabilité, une méthodologie

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31

Batunlu, Canras. "Thermal characterisation and reliability analysis of power electronic devices in wind and solar energy systems." Thesis, Manchester Metropolitan University, 2016. http://e-space.mmu.ac.uk/617153/.

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Power electronic converters (PECs) are used for conditioning the flow of energy between renewable energy applications and grid or stand-alone connected loads. Insulated gate bipolar transistors (IGBTs) are critical components used as switching devices in PECs. IGBTs are multi-layered devices made of different coefficient of thermal expansion (CTE) based materials. In wind and solar energy applications, IGBT’s reliability is highly influenced by the operating conditions such as variable wind speed and solar irradiance. Power losses occur in switching transient of high current/voltage which caus

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32

Le, Minh-Nhat Ba. "ADVANCED THERMOSONIC WIRE BONDING USING HIGH FREQUENCY ULTRASONIC POWER: OPTIMIZATION, BONDABILITY, AND RELIABILITY." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/177.

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Gold wire bonding typically uses 60 KHz ultrasonic frequency. Studies have been reported that increasing ultrasonic frequency from 60KHz to 120KHz can decrease bonding time, lower bonding temperature, and/or improve the bondability of Au metalized organic substrates. This thesis presents a systematic study of the effects of 120 KHz ultrasonic frequency on the reliability of fine pitch gold wire bonding. Two wire sizes, 25.4 and 17.8 μm in diameter (1.0 and 0.7 mil, respectively) were used. The gold wires were bonded to metalized pads over organic substrates with five different metallization. T

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Qiu, Kaiqing. "Reliability evaluation of power distribution systems considering electric vehicles and distributed generation." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287199.

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As human society develops, there is an increasing demand for electricity. However, the reserves of fossil fuels on earth are limited and may run out in the foreseeable future. Therefore, the possibility of replacing traditional fossil fuels with renewable energy sources is widely being investigated to resolve the world-faced energy shortage and environmental problems. The first method is to utilize more renewable energy such as wind and solar power and increase the percentage of distributed generation. Another method is to popularize electric vehicles due to their environmental-friendly and en

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Duvnjak, Zarkovic Sanja. "Security of Electricity Supply in Power Distribution System : Optimization Algorithms for Reliability Centered Distribution System Planning." Licentiate thesis, KTH, Elektroteknisk teori och konstruktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281813.

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The importance of electricity in everyday life and demands to improve the reliability of distribution systems force utilities to operate and plan their networks in a more secure and economical manner. With higher demands on reliability from both customers and regulators, a big pressure has been put on the security of electricity supply which is considered as a fundamental requirement for modern societies. Thus, efficient solutions for reliability and security of supply improvements are not just of increasing interest, but also have significant socio-economic relevance. Distribution system plan

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35

Kolli, Abdelfatah. "Analyse d’une architecture de puissance dédiée aux modes traction–recharge dans un véhicule électrique. Optimisation de la commande et fonctionnement en mode dégradé." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112316/document.

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La problématique de recherche abordée dans ce mémoire de thèse découle de l’étude approfondie d’une association convertisseur-machine dédiée aux modes traction et recharge d’un véhicule électrique. Il s’agit d’un onduleur triphasé constitué de trois onduleurs monophasés connectés à une machine triphasée à phases indépendantes.Dans le chapitre II, une étude comparative entre deux solutions industrielles montre que l’architecture étudiée offre des caractéristiques compétitives notamment en termes de rendement global du convertisseur, performances mécaniques, et surface de silicium nécessaire.Par

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Namayantavana, Sanaz. "Reliability Study of SiC-Based Power Electronic Devices in DC-DC Converter Used in Heavy-Duty Electric and Hybrid Vehicles." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235192.

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A DC-DC converter is used in electrified and hybrid vehicles to supply powerto the low voltage (ex. 24V) system including headlights, horn, air conditioningsystem, wipers, radio, etc. The converter is fed from a high voltage (ex. 650V)battery, which is available in electric/hybrid vehicles, and transfers a relativelyhigh power. SCANIA’s conventional converters, used so far, have silicon-basedswitches, i.e., Si IGBT; and there is an intention to replace the converter with theupgraded counterpart in which SiC-based transistors (SiC-MOSFET) are usedinstead. Wide band-gap silicon carbide (SiC) sem

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Ondo, Ndong Bienvenue. "Onduleurs de tension pour actionneurs électriques : fiabilisation par la séparation des cellules de commutation et reconfiguration." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20097/document.

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Ce mémoire de thèse s'inscrit dans le cadre du programme « avion plus électrique », il comprend deux parties.La première est consacrée à la présentation détaillée du contexte, c'est-à-dire du processus qui conduit à électrifier la plupart des systèmes présents dans l'avion, un exemple d'actionneur électromécanique spécifique, conçu dans ce cadre sera aussi détaillé notamment pour ce qui concerne son mode d'alimentation. La seconde partie, plus longue, est consacrée à différents processus de fiabilisation de structures d'électroniques de puissance. Du fait de l'électrification croissante de l'a

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Zhang, Teng. "Caractérisations des défauts profonds du SiC et pour l'optimisation des performances des composants haute tension." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI108/document.

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En raison de l'attrait croissant pour les applications haute tension, haute tempé-rature et haute fréquence, le carbure de silicium (SiC) continue d'attirer l'attention du monde entier comme l'un des candidats les plus compétitifs pour remplacer le sili-cium dans le champ électrique de puissance. Entre-temps, il est important de carac-tériser les défauts des semi-conducteurs et d'évaluer leur influence sur les dispositifs de puissance puisqu'ils sont directement liés à la durée de vie du véhicule porteur. De plus, la fiabilité, qui est également affectée par les défauts, devient une question i

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Alnahar, Mouaz. "Comportement de l'IGBT en régime extrême." Grenoble INPG, 1999. http://www.theses.fr/1999INPG0050.

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Un systeme utilisant l'electronique de puissance performant et fiable exige des semi-conducteurs de puissance performants non seulement en regime normal mais aussi en regime extreme. Le travail presente est une contribution a l'etude comportementale de l'igbt en regime extreme. Cette etude permet de determiner les limites electriques et thermiques au niveau de la puce de l'igbt au dela desquelles le composant risque d'etre incapable d'assumer correctement sa fonction, ou bien le processus de defaillance est inevitable et elle est abordee dans la plupart des cas par la modelisation simplifiee a

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Perkins, Andrew Eugene. "Investigation and Prediction of Solder Joint Reliability for Ceramic Area Array Packages under Thermal Cycling, Power Cycling, and Vibration Environments." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14518.

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Microelectronic systems are subjected to thermal cycling, power cycling, and vibration environments in various applications. These environments, whether applied sequentially or simultaneously, affect the solder joint reliability. Literature is scarce on predicting solder joint fatigue failure under such multiple loading environments. This thesis aims to develop a unified modeling methodology to study the reliability of electronic packages subjected to thermal cycling, power cycling, and vibration loading conditions. Such a modeling methodology is comprised of an enriched material model to

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Morozovska, Kateryna. "Dynamic Rating of Power Lines and Transformers for Wind Energy Integration." Licentiate thesis, KTH, Elektroteknisk teori och konstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226564.

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Dynamic Rating (DR) is usually associated with unlocking the capacity of power lines and transformers using available information on weather conditions. Our studies show that Dynamic Rating is a broad concept that requires further study and development. The capacity of the majority of power devices is highly dependent on the heat transfer properties of the materials which the devices are made of. To ensure correct power limits of the equipment, one must take into consideration not only the power load, but also ambient conditions, such as: temperature, wind speed, wind direction, solar irradiat

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Molin, Quentin. "Contribution à l’étude de la robustesse des MOSFET-SiC haute tension : Dérive de la tension de seuil et tenue aux courts-circuits." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI111.

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Ce manuscrit est une contribution à l’étude de la fiabilité et de la robustesse des composants MOSFET sur carbure de silicium, matériau semi-conducteur grand gap qui possède des caractéristiques bien meilleures que le silicium. Ces nouveaux interrupteurs de puissances permettent d’obtenir entre autres propriétés remarquables, des fréquences de commutations et des tenues en tension plus élevées dans les systèmes de conversions de puissance. Ils sont particulièrement mis en avant depuis un peu plus d’une dizaine d’années pour les gains en performances, diminution des tailles et poids qu’ils appo

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Westerlund, Per. "Condition measuring and lifetime modelling of disconnectors, circuit breakers and other electrical power transmission equipment." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214984.

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The supply of electricity is important in modern society, so the outages of the electric grid should be few and short, especially for the transmission grid. A summary of the history of the Swedish electrical system is presented. The objective is to be able to plan the maintenance better by following the condition of the equipment. The risk matrix can be used to choose which component to be maintained. The risk matrix is improved by adding a dimension, the uncertainty of the probability. The risk can be reduced along any dimension: better measurements, preventive maintenance or more redundancy.

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Feuillet, Emilien. "Le procédé de report intermétallique en Phase Liquide Transitoire (TLPB) : du développement du procédé à la caractérisation des assemblages intermétalliques." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0024/document.

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Un des enjeux majeur de l’électronique de puissance est de pouvoir étendre l’utilisation des modules de puissance à haute température, supérieure à 200°C. Or, en température, l’endommagement des joints de brasure est un des principaux modes de défaillance des modules de puissance. C’est pourquoi, l’objectif de cette thèse consiste à développer un procédé d’assemblage alternatif : le procédé de report intermétallique (IMC) en phase liquide transitoire (TLPB) à partir du système binaire cuivre-étain. Ce procédé est très attractif car il permet de former à basse température (250°C), un joint enti

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Martineau, Donatien. "Caractérisation de l'endommagement de composants électroniques de puissance soumis à des tests de vieillissement accéléré." Thesis, Toulouse, INSA, 2011. http://www.theses.fr/2011ISAT0004/document.

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L’intégration des dispositifs électroniques de puissance dans les véhicules automobiles nécessite une connaissance approfondie de leur fiabilité. Ces éléments sont soumis à des contraintes de fatigue électrothermique de plus en plus importantes. Cette étude vise à caractériser l’évolution de composants à base de MOSFET lors de tests de fatigue accélérés et contrôlés afin de déterminer les mécanismes physiques qui conduisent à sa dégradation.Nous décrivons d'abord l’évolution technologique des composants électroniques de puissance jusqu’à la technologie de type SmartMos utilisée par Freescale S

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Parent, Guillaume. "Evaluation de la durée de vie de composants électroniques de puissance commerciaux soumis à plusieurs tests de vieillissement et détermination des mécanismes de défaillance." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/17829/1/Parent_G.pdf.

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Actuellement, dans les plateformes aérospatiales, le nombre et le besoin d’intégration des équipements électriques et électroniques sont grandissant du fait que leurs fonctions nécessitent de plus en plus de puissance. L’objectif de minimisation des coûts et surtout la disponibilité des dispositifs électroniques forcent les concepteurs et les fabricants de ces plateformes à s’orienter vers des produits commerciaux (dits grand public). La fiabilité des boîtiers des composants de puissance doit être évaluée dans les environnements sévères des applications aérospatiales. Une dizaine de composants

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Koziel, Sylvie Evelyne. "From data collection to electric grid performance : How can data analytics support asset management decisions for an efficient transition toward smart grids?" Licentiate thesis, KTH, Elektroteknisk teori och konstruktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292323.

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Physical asset management in the electric power sector encompasses the scheduling of the maintenance and replacement of grid components, as well as decisions about investments in new components. Data plays a crucial role in these decisions. The importance of data is increasing with the transformation of the power system and its evolution toward smart grids. This thesis deals with questions related to data management as a way to improve the performance of asset management decisions. Data management is defined as the collection, processing, and storage of data. Here, the focus is on the collecti

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Yadav, Apurba Chandan. "Reliability Assessment of Distribution System at Presence of Distributed Generation." Thesis, 2015. http://ethesis.nitrkl.ac.in/6970/1/RELIABILITY_Yadav_2015.pdf.

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Reliability assessment plays a vital role regarding scheming of distribution systems. It ensures to operate in such an economical manner that the interruption at customer loads will minimum. No matter how the service from whether it’s an utility system (electric) or distributed system or any other types source, the main objective is to achieve the satisfactory reliability goal .Distributed generation (DG) importance is seen in this modern era power system network because using of various types of resources not only serves energy to power network but also conserve it too. DG is the backup optio

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Pradhan, Kumar Prasannajit. "Exploration of Novel Attributes of Hybrid FinFETs towards Analog/RF and Reliability Aspects." Thesis, 2017. http://ethesis.nitrkl.ac.in/8677/1/2017_PhD_513EE1012_KPPradhan.pdf.

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MOSFETs with multiple gate structures, such as 3-D FinFETs have seen enormous interest for sub-22 nm applications. The n base devices are excellent in suppressing the short channel effects (SCEs) and have an immense control over the carriers in the channel. According to the International Technology Roadmap for Semiconductors (ITRS) prediction and previous literatures, the 3-D topologies are here to drive the commercial industries up to 5-nm technology node. The only innovations in lower technology nodes will be in the physical architecture or incorporation of new channel materials that are CM

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Raczkowski, Brian Christopher. "Identification of critical lines for power system operational reliability assessment /." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3363062.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.<br>Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3699. Includes bibliographical references (leaves 116-123) Available on microfilm from Pro Quest Information and Learning.

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