MODULE V
Electrical engineering - Basics Page 31

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4.4.2 Function of an electric engine

Electric engines are powered by the forces electromagnetic fields are developing. The following diagrams explain this in more detail:

  1. Around every conductor through which current is flowing a magnetic field is building up. The magnetic field is rotating clockwise to the flow direction of the current.
  2. Between the poles of ferrousmagnetic materials a magnetic field is building up when power is connected to the poles.
  3. Equal charges repel themselves whereas unequal charges attract each other.



Diagram 42: Magnetic field of a permanent magnet

Diagram 43: Magnetic field of a conductor through which current is flowing (in flow direction)




Diagram 44: The conductor is being inserted into the magnetic field of the permanent magnet








Diagram 45: Field attenuation and field strengthening



Diagram 46: Field attenuation and field strengthening


 

 

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