ALTERNATING-CURRENT MOTORS


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ALTERNATING-CURRENT MOTORS
ALTERNATING-CURRENT MOTORS146. General construction of polyphase induction motors. Polyphase induction motors have two windings, one on the stationary part of the machine, or stator, and one mounted on the revolving part, or rotor. The stator winding is embedded in slots in the inner surface of the frame of the machine and is similar to the armature winding of a revolving-field type of ac generator. The rotor winding may be one of two types, squirrel-cage or wound-rotor. In a squirrel-cage machine the rotor winding consists simply of copper or aluminum bars embedded in slots in the iron core of the rotor and connected together at each end by a copper or aluminum ring. The rotor winding thus forms a complete closed circuit in it…
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. ALTERNATING-CURRENT MOTORS, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export