Séance de cours

Circuits en mode sinusoïdal: principes fondamentaux et analyse

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Dans cours

EE-111: Circuits et systèmes

Ce cours présente une introduction à la théorie et aux méthodes d'analyse et de résolution des circuits électriques. ...

Description

Cette séance de cours couvre les fondamentaux des circuits en mode sinusoïdal, y compris l'analyse des mailles, les fonctions périodiques, les fonctions sinusoïdales, les valeurs moyennes et efficaces, et l'échauffement des résistances. Il explore également l'importance du régime sinusoïdal, des nombres complexes, des phaseurs et de l'impédance. L'instructeur explique les concepts à travers des exemples et discute de la réponse des circuits linéaires aux excitations sinusoïdales.

Enseignant·e

Farhad Rachidi-Haeri

Farhad Rachidi (IEEE Fellow, EMP Fellow, Electromagnetics Academy Fellow) was born in Geneva in 1962. He received the M.S. degree in electrical engineering and the Ph.D. degree from the Swiss Federal Institute of Technology, Lausanne, in 1986 and 1991 respectively. He worked at the Power Systems Laboratory of the same institute until 1996 and had several short stays at the University of Florida and the NASA Kennedy Space Center. In 1997, he joined the Lightning Research Laboratory of the University of Toronto in Canada and from April 1998 until September 1999, he was with Montena EMC in Switzerland. He is currently a titular professor and the head of the EMC Laboratory at the Swiss Federal Institute of Technology, Lausanne, Switzerland. His research interests concern electromagnetic compatibility, lightning electromagnetics and electromagnetic field interactions with transmission lines. Dr. Rachidi is currently a member of the Advisory Board of the IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY and the President of the Swiss National Committee of the International Union of Radio Science. He has received numerous awards including the 2005 IEEE EMC Technical Achievement Award, the 2005 CIGRE Technical Committee Award, the 2006 Blondel Medal from the French Association of Electrical Engineering, Electronics, Information Technology and Communication (SEE), the 2016 Berger Award from the International Conference on Lightning Protection, the 2016 Best Paper Award of the IEEE Transactions on EMC, and the 2017 Motohisa Kanda Award for the most cited paper of the IEEE Transactions on EMC (2012-2016). In 2014, he was conferred the title of Honorary Professor of the Xi’an Jiaotong University in China. He served as the Vice-Chair of the European COST Action on the Physics of Lightning Flash and its Effects from 2005 to 2009, the Chairman of the 2008 European Electromagnetics International Symposium, the President of the International Conference on Lightning Protection from 2008 to 2014, the Editor-in-Chief of the Open Atmospheric Science Journal (2010-2012) and the Editor-in-Chief of the IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY from 2013 to 2015. He is a Fellow of the IEEE and of the SUMMA Foundation, and a member of the Swiss Academy of Sciences. He is the author or coauthor of over 200 scientific papers published in peer-reviewed journals and over 400 papers presented at international conferences.

Source officielle

Proximité ontologique

Physique

Électromagnétisme: Circuit électrique

Concepts associés (32)

Network analysis (electrical circuits)

In electrical engineering and electronics, a network is a collection of interconnected components. Network analysis is the process of finding the voltages across, and the currents through, all network components. There are many techniques for calculating these values; however, for the most part, the techniques assume linear components. Except where stated, the methods described in this article are applicable only to linear network analysis.

Linear circuit

A linear circuit is an electronic circuit which obeys the superposition principle. This means that the output of the circuit F(x) when a linear combination of signals ax1(t) + bx2(t) is applied to it is equal to the linear combination of the outputs due to the signals x1(t) and x2(t) applied separately: It is called a linear circuit because the output voltage and current of such a circuit are linear functions of its input voltage and current. This kind of linearity is not the same as that of straight-line graphs.

Méthode des mailles

Mesh analysis (or the mesh current method) is a method that is used to solve planar circuits for the currents (and indirectly the voltages) at any place in the electrical circuit. Planar circuits are circuits that can be drawn on a plane surface with no wires crossing each other. A more general technique, called loop analysis (with the corresponding network variables called loop currents) can be applied to any circuit, planar or not.

Impédance (électricité)

L'impédance électrique mesure l'opposition d'un circuit électrique au passage d'un courant alternatif sinusoïdal. La définition de l'impédance est une généralisation de la loi d'Ohm au courant alternatif. On passe de à , mais avec et de formes sinusoïdales. Le mot impédance fut inventé par Oliver Heaviside en . Il vient du verbe anglais en signifiant « retenir », « faire obstacle à » ; verbe qui dérive lui-même du latin impedire qui veut dire « entraver ».

Equivalent circuit

In electrical engineering, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit. Often, an equivalent circuit is sought that simplifies calculation, and more broadly, that is a simplest form of a more complex circuit in order to aid analysis. In its most common form, an equivalent circuit is made up of linear, passive elements. However, more complex equivalent circuits are used that approximate the nonlinear behavior of the original circuit as well.

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Séances de cours associées (64)

Analyse des circuits AC: Impédance et admission

Explore l'analyse des circuits CA, en se concentrant sur l'impédance, l'admittance, les phaseurs et les quantités sinusoïdales.

Circuits AC : Analyse d'impédance complexe

Couvre l'analyse des circuits AC, en mettant l'accent sur l'impédance complexe et les différences de phase entre le courant et la tension.

Laplace Transforms: Analyse des circuits

Explore les transformations de Laplace dans l'analyse des circuits, en mettant l'accent sur les diagrammes pole-zéro et les concepts de s-domaine.

Impédance Réseaux

Explore les réseaux d'impédance, les lois de Kirchhoff et les diviseurs de tension/courant dans des circuits complexes.

Nombres complexes : Forme polaire

Couvre la forme polaire des nombres complexes et ses applications dans les calculs mathématiques.

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Concepts associés (32)

Network analysis (electrical circuits)

Linear circuit

Méthode des mailles

Impédance (électricité)

Equivalent circuit

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