Electrical Machines · Fundamentals

Generator Magic: Induced EMF in Rotating Coils

Dr. Mithun Mondal BITS Pilani, Hyderabad Campus Electrical Machines

Demonstrative Video

SECTION 01

EMF Induced in a Rotating Coil Placed in a Magnetic Field

  • Rotor rotating in clockwise direction at constant \(\omega\) radians/sec.

  • velocity component perpendicular to field is \(v_p=v\sin\theta\)

  • The emf induced in conductor \(e=Blv\sin\theta\)

  • As the coil has two conductors only, \(e=2Blv\sin\theta\)

  • If the coil has \(N\) turns, \(e=2NBlv\sin\theta\)

  • emf induced in the coil \(e=2NBlv\cos\alpha\)

emf induced
Emf Induced
EMF Coil
emf coil
Emf Coil