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Induction motor
An
induction
or
asynchronous motor
is an
AC electric motor
in which the
electric current
in the
rotor
needed to produce torque is obtained by
electromagnetic induction
from the
magnetic field
of the
stator
winding. An induction motor therefore does not require
mechanical commutation
, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in
universal
,
DC
and large
synchronous
motors. An induction motor's rotor can be either
wound type
or
squirrel-cage type
.
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