M
mike theodore
- Jan 1, 1970
- 0
Hi
I'm experimenting with a single phase 220V ac induction motor.
I want to regulate speed and for this i'm using a triac together with
an optocoupler to drive it.
I'm using PWM to control firing angle and hence the speed of the motor .
I see two strange things as speed is reduced
1. Motor overheats. Is this normal ?
2. I hear a buzzing sound coming from the motor .From what is it?
I want to mention that the motor has a primary and a secondary winding
The primary has the triac circuit and the seconadry is connected directly to
mains throug a capacitor.
Any help would be greatly appreciated .
Michail
I'm experimenting with a single phase 220V ac induction motor.
I want to regulate speed and for this i'm using a triac together with
an optocoupler to drive it.
I'm using PWM to control firing angle and hence the speed of the motor .
I see two strange things as speed is reduced
1. Motor overheats. Is this normal ?
2. I hear a buzzing sound coming from the motor .From what is it?
I want to mention that the motor has a primary and a secondary winding
The primary has the triac circuit and the seconadry is connected directly to
mains throug a capacitor.
Any help would be greatly appreciated .
Michail