1. I have to control the speed of shaded pole motor. For this i have selected phase control method using TRIAC.
I have a connected a 10K pot at adc input of MCU, as pot is rotated MCU sense the reading & accordingly control the phase. (voltage = 220vac)
2. Now if I connect a 100W bulb at the output & then rotate the pot, I am successfully able to control the intensity of bulb like in gradually goes dimmer or brighter.
Also I have connected a ac voltmeter at load, I can see gradual increase/decrease in voltage of bulb as phase control is done.
3. Problem arises when I connect motor;
Case1: When there is no parallel capacitor at motor connected (ceramic 450V):
Motor start to show on/off behaviour. When volateg of pot at MCU adc pin goes high, motor gets fully on & below that it goes fully off.
However if I connect bulb instead of motor, it works fine.
Case2: parallel capacitor at motor connected (ceramic 450V):
Motor shows random behaviour. Sometimes it picks up the load & starts roating & sometimes it do not even run. At some point full speed is on, at some point only by half speed
What could be problem?
I have a connected a 10K pot at adc input of MCU, as pot is rotated MCU sense the reading & accordingly control the phase. (voltage = 220vac)
2. Now if I connect a 100W bulb at the output & then rotate the pot, I am successfully able to control the intensity of bulb like in gradually goes dimmer or brighter.
Also I have connected a ac voltmeter at load, I can see gradual increase/decrease in voltage of bulb as phase control is done.
3. Problem arises when I connect motor;
Case1: When there is no parallel capacitor at motor connected (ceramic 450V):
Motor start to show on/off behaviour. When volateg of pot at MCU adc pin goes high, motor gets fully on & below that it goes fully off.
However if I connect bulb instead of motor, it works fine.
Case2: parallel capacitor at motor connected (ceramic 450V):
Motor shows random behaviour. Sometimes it picks up the load & starts roating & sometimes it do not even run. At some point full speed is on, at some point only by half speed
What could be problem?