Explain the operation procedure of the below starter circuit

Explain the operation procedure of the below starter circuit in details.

The following diagram shows an induction motor starting circuit with a wiring configuration connected to a secondary transformer with variable DC power that after time delay allow power to be supplied to the DC rotating magnet.

And this next circuit shows the overload heaters and the auxiliary contacts in the motor that will disconnect the motor from the circuit in the case of an overload condition.

Solution

As the Diagram implies the 3_Phase Induction Motor Operation where the entire connection will provide the operation of motor at the required speeds.

The Stator winding of a motor is Connected to a 3_phase supply through Auxilary Contacts and Over Load protectors and fuses which will safe guard the Stator windings and will help in applying smoothened Supply Voltage to the stator windings.

Rotor Windings are excited from the same 3_phase supply but Rotor winding is excited with a DC supply by using a Rectifier circuit which will convert the AC Voltage to DC. The Input to the Rectifier is taken from the 3_Phase source only by taking line voltage through a Transformer

The Speed of the Rotor of Induction Machine Can be controlled by controlling the rectifier circuit

START button and STOP buttons are presented which resembles a DOL starter operation