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Dissertations / Theses on the topic 'Equivalent circuit parameter'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Danielsson, Christer. "Analysis of Synchronous machine dynamics using a novel equivalent circuit model." Licentiate thesis, Stockholm : Skolan för elektro- och systemteknik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10510.

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2

Crampton, Raymond J. "A nonlinear statistical MESFET model using low order statistics of equivalent circuit model parameter sets." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-03032009-040420/.

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3

Serrat, Yvan. "Un algorithme de vérification du schéma électrique extrait d'un circuit intégré." Grenoble 1, 1987. http://www.theses.fr/1987GRE10007.

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L'etude presentee concerne la verification du schema electrique d'un circuit integre obtenu par extraction. Cette verification est basee sur la comparaison du schema electrique extrait avec le schema electrique de reference, utilise par le concepteur pour dessiner le circuit. Du point de vue mathematique, une telle comparaison est equivalente a un test d'isomorphisme effectue sur les graphes associes aux deux schemas. L'algorithme employe prend en compte tous les parametres des graphes (connectivite, type de noeuds, type de liaisons. . . ) pour determiner si oui ou non ces graphes sont isomorp

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4

Alsabbagh, Mohamad. "Parasitics and Current-Dispersion Modeling of AlGaN/GaN HEMTs Fabricated on Different Substrates Using the Equivalent-Circuit Modeling Technique." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40706.

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Electrical equivalent circuit modeling of active components is one of the most important approaches for modeling high-frequency high-power devices. Amongst the most used microwave devices, AlGaN/GaN HEMTs demonstrated their superior performance, making them highly suitable for 5G, wireless and satellite communications. Despite the remarkable performance of AlGaN/GaN HEMTs, these devices reside on substrates that invoke limitations on the operating-frequency, power-efficiency, and current dispersion phenomenon. Also, there is a limitation in present parameters extraction techniques being not ab

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5

MALGAROLI, GABRIELE. "Innovative Model based on the Irradiance-Temperature Fitting of Equivalent Circuit Parameters for Commercial Photovoltaic Modules towards Accurate Power and Energy Prediction." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2972152.

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6

Cogitore, Bruno. "Recherche de circuits équivalents pour les composants magnétiques haute fréquence." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0059.

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Le travail présenté a deux objectifs. L'élaboration de circuits à constantes localisées représentant le comportement électrique des composants magnétiques du continu jusqu'à quelques mégaHertz, et la compréhension du fonctionnement interne de ces composants pour en déduire des améliorations technologiques. Initialement, cette étude concernait les transformateurs utilisés dans les convertisseurs statiques de quelques centaines de Watts fonctionnant à quelques centaines de kiloHertz, mais la généralité des méthodes employées est telle que la validité des résultats dépasse largement ce cadre init

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7

Dareini, Ali. "Prediction and analysis of model’s parameters of Li-ion battery cells." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-11799.

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Lithium-ion batteries are complex systems and making a simulation model of them is always challenging. A method for producing an accurate model with high capabilities for predicting the behavior of the battery in a time and cost efficient way is desired in this field of work. The aim of this thesis has been to develop a method to be close to the desired method as much as possible, especially in two important aspects, time and cost. The method which is the goal of this thesis should fulfill the below five requirements: 1. Able to produce a generic battery model for different types of lithium-io

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8

Sahraoui, Omar. "Calcul des paramètres du schéma équivalent de la machine asynchrone par la méthode des éléments finis." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0056.

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Depuis son invention par Tesla, au siècle dernier, la machine asynchrone s'est imposée dans l'industrie grâce à sa robustesse, sa fiabilité et son coût faible. Avec le développement de l'électronique de puissance et de la commande vectorielle ces dernières années, elle est devenue compétitive dans le domaine de la vitesse variable. Il existe principalement deux approches différentes pour l'étude de la machine asynchrone : le schéma équivalent et la méthode des éléments finis. Les méthodes classiques de détermination des paramètres des éléments finis (f. E. M. ) est plus précise car elle permet

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9

Chaiwan, Pramote. "NEW ACCURATE FAULT LOCATION ALGORITHM FOR PARALLEL TRANSMISSION LINES." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/813.

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Electric power systems have been in existence for over a century. Electric power transmission line systems play an important role in carrying electrical power to customers everywhere. The number of transmission lines in power systems is increasing as global demand for power has increased. Parallel transmission lines are widely used in the modern transmission system for higher reliability. The parallel lines method has economic and environmental advantages over single circuit. A fault that occurs on a power transmission line will cause long outage time if the fault location is not located as qu

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10

Robinson, Michael J. "Finite element calculation of equivalent circuit parameters for induction motors." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/8003.

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11

Susetyo, Budi. "Modélisation de l'impédance harmonique de charges agrégées." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0027.

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Les applications de l’électronique de puissance contribuent à la pollution harmonique des réseaux électriques. Pour estimer le niveau de distorsion de tension, les différents composants du réseau doivent être modélisés en régime harmonique, en particulier les charges consommatrices, industrielles, commerciales et domestiques. L’étude concerne la modélisation de l’impédance harmonique des charges qui peuvent être séparées en deux grandes catégories: les charges passives et les charges dites actives qui réalisent une conversion d’énergie électromécanique. Les modèles disponibles pour les charges

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12

Sifi, Nedjem-Eddine. "Caractérisation de dispositifs microondes dans le domaine temporel par identification à des modèles électriques équivalents." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0092.

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Dans le domaine des telecommunications, nous constatons que non seulement la recherche et le developpement mais aussi la fabrication et le controle des systemes sont grandement conditionnes par les moyens de mesure et d'experimentation disponibles. Ce constat est encore plus net dans le domaine des microondes. En effet, bien que l'evolution rapide de la conception assistee par:ordinateur (cao) limite maintenant les etapes intermediaires, il n'est pas realiste d'envisager des systemes ou composants concus et realises sans experimentation preliminaire, intermediaire ou finale. Tenir compte des p

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13

Tabaga, Saleh. "Modélisation du comportement fréquentiel du transformateur : détermination des paramètres du schéma équivalent par la méthode des éléments finis en géométries 2D et 3D." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0081.

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La connaissance et la maîtrise des régimes transitoires qui apparaissent et se propagent sur les réseaux et dans le matériel électrique (transformateurs, parafoudres,. . . ) est un problème d'actualité. Relié au réseau électrique, un transformateur peut subir différents types de surtensions dont la connaissance permet d'évaluer les contraintes auxquelles sont soumises les isolations internes. La modélisation du comportement à haute fréquence d'un transformateur industriel de type cuirassé, nous a conduit à élaborer un schéma électrique équivalent à constantes localisées et à paramètres constan

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14

Petrone, Raffaele. "Electrochemical Impedance Spectroscopy for the on-board diagnosis of PEMFC via on-line identification of Equivalent Circuit Model parameters." Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1476.

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2012 - 2013<br>Proton Exchange Membrane, also named Polymer Electrolyte Membrane fuel cells (PEMFC) are interesting devices for energy conversion. Their development is due to the high efficiency, acceptable power density, quick start-up and good environmental compatibility. On the other hand, reliability cost and durability are the main challenges for PEM fuel cell commercialization. In 2010 the American Department of Energy (DoE) sets a target of 40000 hours for stationary and 5000 hours for automotive applications, respectively. Actually, these standards are considered as the mainly re

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15

Tessarolo, Alberto. "Modeling and analysis of multiphase machines for high power applications." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3421670.

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This doctoral thesis is dedicated to the modeling and analysis of high-power multiphase electric machines. In the first part, the multiphase technology and variety in the field of high power electric drives and power generation is illustrated by means of some significant industrial realizations which highlight the main design issues and advantages that may lead to choose a high number of phases in large electric machinery. Subsequently, the attention is focused on the so called split-phase configurations, characterized by stator windings split into *N* three-phase sections. The modeling

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16

Ibrar, Ibrar. "Study of the effect of temperature on the metrological characteristics of Inductive Current Transformers." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The presented thesis focused on the study of effect of temperature and different loading condition of an inductive current transformer for medium voltage purposes. Equivalent circuit parameters behavior of the current transformer is analyzed for two different temperatures 24°C and 60°C and varying working conditions (current and voltage). Application of Short Circuit and Open circuit test is done for the current transformer under test with varying loading conditions and two temperatures of interest. Interesting behavior of the shunt parameters of the current transformers are of most attention

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17

Kuparowitz, Tomáš. "Transport a ukládání náboje ve struktuře superkondenzátoru." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-364610.

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Práce se zabývá studiem superkondenzátorů (SC). Výstupem je detailní studie principů přenosu náboje ve struktuře SC, ukládání energie a nový náhradní model SC, který je založen na fyzikálních zákonitostech a principech SC. Dále byl vytvořen matematický model SC, který popisuje chování náboje v jeho aktivní vrstvě. SC byly testovány metodami umělého stárnutí. Závislosti poklesu parametrů SC vlivem různých metodik stárnutí jsou v práci shrnuty.

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18

Pérez, Jiménez Antonio. "Caracterización multimodal de filtros de red y equipos electrónicos." Doctoral thesis, Universitat Ramon Llull, 2008. http://hdl.handle.net/10803/9139.

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Un dels problemes més importants en la Compatibilitat Electromagnètica és el control de les interferències emeses i/o rebudes per un equip electrònic a través dels seus terminals d'alimentació monofàsica. Aquestes interferències es classifiquen en mode comú i mode diferencial. La manera més usual de mitigar-les és mitjançant la utilització de filtres de xarxa. Els mètodes actuals de disseny de filtres de xarxa tracten la mitigació d'aquest tipus d'interferències per separat: no tenen en compte que ambdós tipus de senyals (mode comú i diferencial) interaccionen entre sí i es transfereixen energ

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19

Karisan, Yasir. "Full-wave Electromagnetic Modeling of Electronic Device Parasitics for Terahertz Applications." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1419019102.

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20

Fialka, Jiří. "Měření parametrů piezoelektrických materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217770.

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The master’s thesis deals with the piezoelectric coefficients, the resonance frequency and especially the piezoelectric constants verification. With the assistance of several devices, for instance LCR-meter HIOKI 3532, impedance analyzer Agilent 4294A and LCR-meter Agilent E4980A, the resonance and the anti-resonance frequencies as well as impedance and capacitance of samples are measured. The paper opens with the theory of the piezoelectric phenomenon and the difference between direct and indirect piezoelectric phenomenon, it also describes the basic behaviour of a piezoelectric ceramic eleme

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21

Hamdi, Bilel. "Modélisation des circuits périodiques et quasi-périodiques alimentés par des sources arbitraires." Thesis, Toulouse, INPT, 2015. https://oatao.univ-toulouse.fr/25877/1/HAMDI_Bilel.pdf.

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Les réseaux d’antennes planaires sont réputés par leur grande directivité et leur facilité de mise en œuvre qui offre la possibilité d’avoir un diagramme de rayonnement commandable. Cependant l’étude globale tenant compte des différents couplages EM par une théorie électromagnétique rigoureuse nécessite un espace mémoire important et un temps de calcul considérable. Pour surmonter à ces inconvénients, nous proposons d’introduire une nouvelle approche théorique basée sur le théorème de Floquet permettant la réduction du volume d’analyse EM au niveau d’une seule cellule élémentaire. Nous allons

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22

Li, Jyun-lun, and 李俊侖. "Parameter Derivation for Equivalent Circuit Model of Induction Cookers." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/32323084765715434331.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>104<br>A half-bridge series resonant inverter is implemented to recognize the parameters of the equivalent circuit model of an induction coil loaded with steel pots for induction cookers. When a steel pot is loaded on the induction coil, the circuit parameters and thus the resonant frequency vary with the shape and material of the pot. The effects of the inverter switching frequency and the position between the pot and the induction coil are analyzed from experimental tests with seven pots of different shapes and materials. Accordingly, the parameters of the equiva

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23

Chen, Kuan-Hsu, and 陳冠旭. "RF MOSFET Small Signal Equivalent Circuit Model Parameter Extraction for Various Biases and Geometries." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/52970935108922010651.

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碩士<br>國立交通大學<br>電子工程系所<br>97<br>Small signal equivalent circuit models and the corresponding parameter extraction methods have been developed in this thesis for RF CMOS circuit simulation. Both two-port 3-terminal (3T) and four-port 4-terminal (4T) RF MOSFETs are covered in this work. The former one – 3T MOSFETs with a common source topology is a conventional one widely used in RF circuits, and the test-key layout is arranged in a two-port configuration with a common ground for source and body tied together to fit the two-port RF measurement system. In fact, source and body terminals are not a

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24

Chang, Ting-Chen, and 張庭禎. "Parameter Derivation of Equivalent Circuit Model for Photovoltaic Panel with Ripple Current Orientation Method." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/66350592792619886531.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>104<br>For a photovoltaic (PV) panel, an equivalent circuit with an additional parasitic capacitance on the conventionally used single-diode static model can be used to interpret the phase deviation between the output voltage and current and to simulate the dynamic characteristics. The parameters of the equivalent circuit can be derived simply from five test points when a boost converter is attached to the PV panel for maximum power point tracking (MPPT) drawing a rippled current. The circuit parameters of the static model are calculated from the open-circuit volta

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25

余昱穎. "Bias Dependence and Geometry Effect of SiGe HBTs Equivalent circuit Elements using Direct Parameter-Extraction Method." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/77801493815957913719.

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26

Hsieh, Chun-ting, and 謝俊霆. "Equivalent Electric Circuit Simulation and Experiment for Foundation Vibration with the Application of Systematic Lumped-parameter Models." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/63222643763092048795.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>93<br>Based on the concept for approximating the dynamic flexibility function of foundation by polynomial-fraction, different mathematical methods have been developed in recent studies to decompose this polynomial-fraction and then directly correspond it to various types of systematic lumped-parameter models for representing the dynamic behavior of unbounded soil. Other than being applied for the simplification in analysis and design, these systematic lumped-parameter models can be also correlated to equivalent electric circuits due to their concise mathematical f

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27

Huang, Shih-Pin, and 黃士賓. "General Systematic Lumped-parameter Models for Foundation Vibration and Preliminary Study on Their Equivalent Electric Circuit Simulation." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/20412242333993615493.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>92<br>Based on the approximation by polynomial-fraction, different mathematical methods are applied in this study to investigate its various possible decompositions. These decompositions are further categorized to develop various types of systematic lumped-parameter models for efficiently representing the dynamic behavior of unbounded soil. Following the concise formulation employing a ratio of two polynomials to represent the normalized dynamic flexibility function of foundation and then solving the optimal coefficients of the polynomials, this research starts wi

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28

Yeh, Chih-Ting, and 葉致廷. "Three Terminal and Four Terminal RF MOSFET Model Parameter Extraction Methods Development and Verification by Equivalent Circuit Simulation." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/01478305174414679454.

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碩士<br>國立交通大學<br>電子工程系所<br>94<br>Parameter extraction method development is very important for accuracy of simulation. In the past, foundries always provide customers with the 3T sample layout, whose source and body terminals are connected together. But foundries tend to provide customers with 4T sample layout for circuit designers’ purpose at present. And model card is constructed on 4T device to match the practical using way of circuit designers. In order to provide circuit designers with accurate model card, reliable parameter extraction method development is obviously important. 3T and 4T d

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29

Liu, Chin-ying, and 劉京鷹. "Evaluation of the Equivalent circuit Parameters of a Photovoltaic Array." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24726298446290107362.

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碩士<br>雲林科技大學<br>電機工程系碩士班<br>96<br>This thesis presents a measurement technique for the analysis of the equivalent circuit parameters of solar cells and modules, including the presentation of the measurement system. Several I-V characteristic curves of solar cells and modules were obtained from measurement. The proposed methods include the straightforward calculation and least-squares to calculate the five parameters of the circuit model, allowing the I-V characteristic curves of solar cells and modules to be drawn by bring those parameters into I-V characteristic equation. Comparison between c

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30

Wu, Hsin-Jung, and 吳欣蓉. "The Extraction of Equivalent Circuit Model Parameters On InGaAsSb Heterojunction Bipolar Transistors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/68150079599585729534.

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碩士<br>雲林科技大學<br>光學電子工程研究所<br>96<br>This thesis summarizes extraction of DC parameters and thermal parameters in VBIC equivalent circuit model for In0.4Ga0.6As0.8Sb0.2 hetero-junction bipolar transistors. Both critical and negligible parameters are pointed out in order to obtain an accurate model. To reduce the time spent in measurement and extract parameters efficiently, the extraction focuses on forward mode operation and neglects reverse mode operation. Parameters for reverse operation are used to optimize the collector current versus collector-emitter voltage (IC-VCE) output characteristic.

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31

Chen, Chun-chung, and 陳俊中. "Extracting MOSFET Small Signal Equivalent Circuit and Substrate Parameters with Four Port De-embedding Method." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/4322rd.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>97<br>Characteristics of small signal components for circuit designers are very important in circuit design. Many researchers have been working hard on removing the unwanted parasitic effects which is used to get the intrinsic characteristics of the small signal parameters. In this thesis, we propose a novel four-port de-embedding procedure which based on two-port cascade structure de-embedding procedure and combined with metal and polysilicon ground-shielded technology, and let four terminals of MOSFET are connected individually to four signal pads. With such de-e

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Kuan-JuChen and 陳冠儒. "Table-based Estimation of First-Order Equivalent Circuit Parameters for Li-ion Batteries under Different Charge Currents." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ej4325.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系<br>106<br>This thesis describes a table-based derivation of first-order RC equivalent circuit parameters for a Lithium-ion battery circuit in order to estimate the cell voltage of a battery under different charging currents. The first-order RC equivalent circuit of a battery consisted of one voltage source, one resistance and one resistor-capacitor circuit was able to account for the charging dynamics observed in the experiment. Two sets of parameters for a battery tested at room temperature were derived from two different pulse voltage curves. One was under 1.176 A

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Silva, Hugo Filipe Vieira da. "Simulação e comparação dos parâmetros do circuito equivalente por fase de motores de indução trifásicos com rotor em gaiola de esquilo de diferentes classes de rendimento." Master's thesis, 2016. http://hdl.handle.net/10316/81543.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia<br>Os objetivos principais desta dissertação são, de uma forma geral, comparar as alterações dos parâmetros do circuito equivalente por fase de quatro motores de indução trifásico com rotor em gaiola de esquilo de classes de rendimento IE1, IE2, IE4 de um único fabricante, correlacionando-os com as perdas que os mesmos produzem e com aspetos construtivos dos motores em termos dimensionais e de quantidade e qualidade dos materiais ativos utilizados. Serão desenvolvid

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