November 2016
Intermediate to advanced
1008 pages
27h 59m
English
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12.4. Asynchronous or Induction Motors
Fig. 12.17 shows a typical layout of a three-phase asynchronous motor where we see the poles of the rotor as well as the three-phase stator coordinates as–bs–cs which have a phase difference corresponding to the axes ar–br–cr. Similar to the stator, the rotor consists of iron core and windings. The core of the rotor is cylindrical made of steel and constructed in such away to create grooves in the axial region where the windings are placed. In this case the electric motor is said to be motor with squirrel-cage rotor. If the electric motor is a rotor cage type, in the core grooves, bars made from copper or aluminium or any other suitable alloy material are placed with their ends short-circuited with rings ...
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