Motor Control

When 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