Hi,
this is vinod. In my text book i found a block diagram to implement constant speed control for induction motor, by comparing the motor speed with a ref speed . and the error signal is used to vary the firing angle for triac which controls the line voltage and hence the speed.
my question is, if the motor is having 230v 1500rpm as rated conditions,
the required speed is 1200rpm,,,,,so, the voltage(230v) has to decrease to get 1200rpm. Let the voltage be 180v. If my required speed is say 700rpm,
I think, i cant reduce the voltage. Can anybody fix this problem? If i still reduce the voltage, what will happen to the motor?
this is vinod. In my text book i found a block diagram to implement constant speed control for induction motor, by comparing the motor speed with a ref speed . and the error signal is used to vary the firing angle for triac which controls the line voltage and hence the speed.
my question is, if the motor is having 230v 1500rpm as rated conditions,
the required speed is 1200rpm,,,,,so, the voltage(230v) has to decrease to get 1200rpm. Let the voltage be 180v. If my required speed is say 700rpm,
I think, i cant reduce the voltage. Can anybody fix this problem? If i still reduce the voltage, what will happen to the motor?