Rotating Magnetic Fields

  1. John Chiasson

Published Online: 27 JAN 2005

DOI: 10.1002/0471722359.ch4

Modeling and High-Performance Control of Electric Machines

Modeling and High-Performance Control of Electric Machines

How to Cite

Chiasson, J. (2005) Rotating Magnetic Fields, in Modeling and High-Performance Control of Electric Machines, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471722359.ch4

Publication History

  1. Published Online: 27 JAN 2005
  2. Published Print: 18 MAR 2005

ISBN Information

Print ISBN: 9780471684497

Online ISBN: 9780471722359

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Keywords:

  • distributed windings;
  • sinusoidally distributed windings;
  • radial air gap magnetic fields;
  • flux linkage

Summary

This chapter uses the results of Chapters 1 and 3 to explain how a radially directed rotating magnetic field can be established in the air gap of AC machines. In particular, the notions of distributed windings and of sinusoidally wound turns (phase windings) are explained. Ampere's law is then used to show that a sinusoidal (spatially) distributed radial magnetic field is established in the air gap by the currents in the phase windings. The concept of flux linkage in distributed windings is explained and the chapter ends with an optional section on the azimuthal magnetic field in the air gap.