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Magnetic circuits - Electromagnet

Lecture's plan

Introduction

  1. The importance of the magnetic circuit notion
  2. An example of magnetic circuit
  3. Defining the integration contour for the application of Ampère's theorem
  4. The application of Ampère's theorem - emphasizing the magnetic circuit
  5. Hopkinson's law
  6. Analogy between magnetic circuits/electrical circuits
  7. Application for modelling an electromechanical converter
  8. Defining the equivalent magnetic circuit
  9. The reduction of the equivalent magnetic circuit
  10. Flux-current relation
  11. The calculus of the magnetic co-energy and attraction force

This lecture deals with the modelling of an electromagnet. This represents an opportunity for the introduction of Hopkinson's Law and the notion of magnetic circuit.

  • prior knowledge:
  • level: cycle 2
  • auxiliary resources:
  • estimated time :
  • author: Damien Grenier, Bruno Dehez
  • realisation: Sophie Labrique
  • translation: Bogdan Dumitrescu, Sergiu Ivanov

Download here the printable version.

Site coordinator: Damien Grenier | Realization: Sophie Labrique | © e-lee.net
Last update: 2005, September, 30 | Translation: Sergiu Ivanov | Realization: Florin Ravigan, Cristian Vladu