I have a requirement where I have to control the speed of 10 motors. The motors are 230V AC single phase motors. The speed of the motors need to be increased or decreased using a electronic controller (no varistor). All the motors need to run at the same speed. I am considering phase angle voltage control to control the speed of the motors.
Each motor consumes maximum 2A current.
I have identified BTA24 Triac which supports 25A load current. This is a snubber less triac.
My question is whether I will be able to control all the 10 motors using a single triac. i.e phase angle control using 1 triac and feed the output to multiple motors.
Whether this setup is possible or is there any drawback in using a single triac (any thing to do with induction current etc) or do I need to have a triac for each motor separately
Just to clarify on speed:
I am not worried about synchronised speed on all motors. All my concern is if I supply a chopped voltage to a set of motors connected to a single triac, will the presence of multiple motors on the same triac affect the output voltage or current at the triac output.
Each of my motor is rated at 350W.
If I supply 240V via the triac I expect all of them to run at X rpm.
If I am firing the triac at 90 degree,I expect to supply 120V to all the motors assuming a 240V mains line. Can I expect all the motors to run at X/2 rpm (+/- few rpms is acceptable)