DC Motors Braking

By 16 August 2014

A motor and its load can be brought to rest quickly by using either of the following:

• Friction braking
• Electric braking.

The common mechanical brake has one drawback. Smooth braking is difficult to achieve, apart from the fact that, it largely depends on the operator’s skill.

Electric braking methods eliminate the need for brake linings, levers, etc. There are three methods of electric braking both for shunt and series motors:

• Rheostatic or dynamic braking
• Plugging or reversal of torque
• Regenerative braking.

A friction brake, however, is necessary for holding the motor, even after it has been brought to rest. This is so even in the case of electric braking.