BOOKMARK THIS PAGE SEND TO A COLLEAGUE ENQUIRE NOW
Security code

Gibbons jargon buster #7: What is cogging?

In the latest of our jargon-busting blogs we’re asking what is cogging and what effect does it have on an electric motor’s performance?

When the rotor in an electric motor turns, it passes through the magnetic poles created by the stator windings. As the rotor passes from one pole, the attraction to the next causes a jerking motion. This is known as cogging (or detent).

The severity is dependent on the motor’s speed, because if the rotor is moving fast enough then cogging does not have the chance to take effect. However, if the motor is running very slowly then cogging will be much more pronounced.

In order to reduce the effect of cogging, a rotor’s conductor bars are skewed (see photo). This means that as one conductor leaves a magnetic field, the next one enters it simultaneously. This results in much smoother running than if the conductors were straight.

For technical advice relating to electric motors or any of our products, give us a call on 01621 868138 or email info@gibbonsgroup.co.uk

Electric Motors

Add comment

Back to Blog

SITEMAP