About this document
Induction Motor Testing and Issues by mohamed shalaby is a document available to read on EtoBox.
The document discusses two phenomena related to induction motors: 1) Crawling - Some induction motors can run stably down to 1/7th of their synchronous speed due to harmonic torques from the 5th and 7th harmonics in the stator flux wave. The 7th harmonic torque allows stable operation near 1/7th synchronous speed. 2) Cogging or magnetic locking - The rotor may refuse to start if the number of stator and rotor teeth are equal due to magnetic locking between teeth. This is avoided by making the number of ro
- Author
- mohamed shalaby
- Language
- EN