Cogging Torque

Cogging torque of electrical motors is the torque due to the interaction between the permanent magnets of the rotor and the stator slots of a Permanent Magnet (PM) machine. It is also known as detent or 'no-current' torque. This torque is position dependent and its periodicity per revolution depends on the number of magnetic poles and the number of teeth on the stator. Cogging torque is an undesirable component for the operation of such a motor. It is especially prominent at lower speeds, with the symptom of jerkiness. Cogging torque results in torque as well as speed ripple; however, at high speed the motor moment of inertia filters out the effect of cogging torque.

Read more about Cogging Torque:  Reducing Cogging Torque, Model Railway Motors, Footnotes and References

Other articles related to "cogging torque":

Cogging Torque - Footnotes and References
... Saginaw, MI, USA "Issues in reducing the cogging torque of mass-produced permanent-magnet brushless DC motor" ... the cogging torque ...

Famous quotes containing the word torque:

    Poetry uses the hub of a torque converter for a jello mold.
    Diane Glancy (b. 1941)