Hi all,
So I'm working on a project titled "Controlling the speed of a single phase induction motor".
Supply to motor is a 230V,50Hz single phaseAC.
While researching on the internet I came across this one circuit that proposes a model that uses A microcontroller and a triac circuit and a zero crossing detector circuit to "adjust the speed".
Now I also read elsewhere on this website that a single phase induction motor can only be controlled by changing it's frequency - voltage changes won't result in a change in speed; and that for the you require a VFD that is usually quite expensive. Best use a 3Ph Induction Motor.
Now, herein lies my question: What if the voltage of the supply to motor is changed by controlling the phase angle? Using the microcontroller for a custom delay value and firing the triac after every zero-crossing)
Shouldn't this not control the speed, since the frequency remains the same?
I'm attaching the circuit and a report that was proposed on the other website.
Thanks in advance!
Best Regards,
Vedant
So I'm working on a project titled "Controlling the speed of a single phase induction motor".
Supply to motor is a 230V,50Hz single phaseAC.
While researching on the internet I came across this one circuit that proposes a model that uses A microcontroller and a triac circuit and a zero crossing detector circuit to "adjust the speed".
Now I also read elsewhere on this website that a single phase induction motor can only be controlled by changing it's frequency - voltage changes won't result in a change in speed; and that for the you require a VFD that is usually quite expensive. Best use a 3Ph Induction Motor.
Now, herein lies my question: What if the voltage of the supply to motor is changed by controlling the phase angle? Using the microcontroller for a custom delay value and firing the triac after every zero-crossing)
Shouldn't this not control the speed, since the frequency remains the same?
I'm attaching the circuit and a report that was proposed on the other website.
Thanks in advance!
Best Regards,
Vedant
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