Fairford Electronics QFE Series, Руководство пользователя

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Applications
QFE
page 3-12
FD841405_F
Locked Rotor Torque
( LRT, M )
A
Pull Out Torque
( M )
K
TORQUE
Pull-up Torque
Full Load Torque ( FLT, M )
N
Synchronous speed
0 S SPEED
Figure 3.3.2.1 Torque/Speed Curve - Induction Motor
As for each type of motor, so each load coupled to an induction motor has its own speed/
torque curve:
Locked Rotor Torque
( LRT, M )
A
Pull Out Torque
( M )
K
TORQUE
Pull-up Torque
Full Load Torque ( FLT, M )
N
Synchronous speed
0 S SPEED
Figure 3.3.2.2 Torque/Speed Curve - Coupled Load
The acceleration of a motor-load system is caused by the difference between the developed
torque (motor) and the absorbed torque (load) and is shown by the shaded area in the next
figure:
Locked Rotor Torque
( LRT, M )
A
Pull Out Torque
( M )
K
TORQUE
Pull-up Torque
Full Load Torque ( FLT, M )
N
Synchronous speed
0 S SPEED
Figure 3.3.2.3 Torque/Speed Curve - Accelerating Torque