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Electric motor basics: Why are rotors skewed?

Publication date: 
December 2003
Author: 
Cyndi Nyberg Esau, Former EASA Technical Support Specialist

Stator windings in three-phase motors are designed to have the amount of flux that the core needs to produce the desired output. The number of turns and size of wire are limited by the core dimensions. However, in the squirrel cage rotor, there are many more variables in the design. One of the variables is the shape of the rotor slot. Many rotor designs are skewed. So, why are rotors skewed?

Topic(s): 
Rotors
Design/theory/application