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Motor Control

Motor_control1When starting, an electrical motor has a huge current demand.
Inserting a resistor in the circuit (on stator side for squirrel cage motors and on rotor side for ring type motors ) will help to reduce current appeal, to control torque level and to pilot starting phase duration. 

When braking or stopping, a motor needs to purge its kinetic energy. Most simple way is to dissipate this energy into a resistor. Parameters which will be used for those resistors are :

- Stator or rotor electrical data
- Motor power
- Number of starting or braking steps
- Rated starting torque
- Starting or braking duration
- Starting or braking motor load or inertia