![]() An induction motor's rotor can be either wound type or squirrel-cage type. An induction motor therefore needs no electrical connections to the rotor. Many such motors have a symmetric armature, and the frame may be reversed to place the electrical connection box (not shown) on the opposite side.Īn induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor that produces torque is obtained by electromagnetic induction from the magnetic field of the stator winding. Cutaway view through stator of TEFC induction motor, showing rotor with internal air circulation vanes. In TEFC motors, interior heat losses are dissipated indirectly through enclosure fins, mostly by forced air convection. ![]() ![]() Three-phase totally-enclosed fan-cooled ( TEFC) induction motor with end cover on the left, and without end cover to show cooling fan on the right. For the electric car company, see Tesla, Inc.
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