How to operate the 2 Phase AC Motor

[bilal shareef]

Hello Every Body,
I want to derive a 2 Phase AC motor. I have got the wiring diagram for it which is below. I want to know that what capacitance value should i use. As i have to operate it at 100

VAC

 

[chuckey]

That's a single phase motor with an extra winding to make it start in a prefered direction( black & white leads). The main winding is blue and red.
Frank

 

[bilal shareef]

Chuckey, If i want to controll the speed of this motor using Triac, then i should connect the Triac with Blue wire when clock wise motion and with red wire for anti clock wise motion right ??

 

[chuckey]

This is a form of motor that is locked to the mains frequency. If you reduce the voltage to it , it will only slow down slightly with very low power before it stops. What you need to do is to get a "universal" motor (with brushes), these can be controlled over a wide range and by switching the windings can be run in reverse.
Frank

 

[schmitt trigger]

My experience attempting to phase-control the speed of those capacitor-run induction motors, is that unless its mechanical load is very compliant (like a fan) and the speed range is quite limited, you'll hit the stall torque.

In other words....the motor will have to be significantly oversized for the application.

Like Chuckey mentions: Universal (brushed) motors are your best bet for speed control employing a TRIAC.