7/30/2019 synchronous_motor_drive

1/10

Synchronous Motor Drive

7/30/2019 synchronous_motor_drive

2/10

Significance

High power applications

Load Commutation: Thyristor based Inverter

High power density

Compact

Servo applications

7/30/2019 synchronous_motor_drive

3/10

Analysis

7/30/2019 synchronous_motor_drive

4/10

Load

Commutation

7/30/2019 synchronous_motor_drive

5/10

Speed Control

7/30/2019 synchronous_motor_drive

6/10

Speed Control

True Synchronous mode of operation :

frequency is an independent variable

Self Control: load angle is an

independent variable

7/30/2019 synchronous_motor_drive

7/10

True Synchronous

Mode

7/30/2019 synchronous_motor_drive

8/10

Rotor Position

Encoder

7/30/2019 synchronous_motor_drive

9/10

Self Controlled

Drive

ratedf

f

k

ratedkVV

7/30/2019 synchronous_motor_drive

10/10

ratedf

fk

For k1

Tmax = constantk

T1

max

k

10

Tmax

Pmax