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In three-phase squirrel-cage induction motors

  • In three-phase squirrel-cage induction motors rotor conductors are short-circuited through end rings.
  • The rotor consists of a laminated core with slots in which the rotor conductors are placed.
  • The conductors are typically made of copper or aluminum bars and are short-circuited at both ends by end rings, which are also made of copper or aluminum.
  • When power is applied to the stator, a rotating magnetic field is produced, which induces a current in the rotor conductors.
  • The end rings ensure that the induced current flows through each conductor in the same direction, which creates a magnetic field in the rotor that interacts with the stator magnetic field and causes the rotor to rotate.