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The notion of rotating field

Lecture's plan

Introduction

  1. Winding which provides a sinusoidal repartition of the field within the air-gap
  2. A field in the air-gap created according to the current flowing through the winding
  3. Sinusoidal variation of the currents depending on the time
  4. Representation of the pulsating field by a vector
  5. The case of three spatially staggered windings to 120°
  6. Powering with sinusoidal currents temporally dephased eachother by 120°
  7. Expression of the total resulting field within the air-gap
  8. Representation of the total resulting field within the air-gap
  9. Rotating field

This presentation shows how it is possible, having windings which provide a sinusoidal repartition of the field within the air-gap, to obtain a rotating field.

  • prior knowledge:
  • level: cycle 2
  • auxiliary resources:
  • estimated time :
  • author: Damien Grenier
  • 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