What is COGGING

COGGING & MAGNETIC LOCK

SQUIRREL CAGE motor sometime s could not be start, the rotor of squirrel cage motor refuse to start at all, particularly when the voltage is low. This happen due to Magnetic Locking between stator and rotor teeth, when number of stator teeth is equal to number of rotor teeth.

For that Kind of reason sometimes this phenomenon is call TEETH LOCKING.

It is found that the reluctance of the magnetic path is minimum when the stator and rotor teeth face to face each other rather than when teeth of one element (rotor or stator)  are opposite to the slots on the other. It is in such position of minimum reluctance, that the rotor tends to remain fixed and for that cause serious trouble during starting.

How to overcome from COGGING:

Cogging of squirrel cage motors can easily overcome by making the number of rotor slot prime to the number of stator slots.

One Reply to “What is COGGING”

  1. Please let me know if you’re looking for a writer for your weblog.
    You have some really great articles and I think I would be a good asset.
    If you ever want to take some of the load off, I’d really like to write some content for your blog in exchange for a link back to mine.
    Please send me an e-mail if interested. Cheers!

Leave a Reply

Your email address will not be published. Required fields are marked *