Tuesday, November 23, 2010

How would you change the running direction of a Universal motor running on AC?

i salvaged a 1.6kw motor from a vacuum cleaner-wishing to make it into a blower but i want to use the impeller as a propeller- i can do this by changing the running direction of the motor

however i do not know how to do this-there are two wires leading to the motor brown and blue these wires are also connected to a capacitor in Parallel they lead straight from the plug

i have tried disconnecting the capacitor to see if i can hand start the motor in the opposite direction-however even when the capacitor is disconnected the motor still runs in the same direction

there are no more wires coming out of the motor and the 2 brushes are connected to the field wires(the electromagnets around the armature)- can the direction of the motor be changedHow would you change the running direction of a Universal motor running on AC?Universal motors are usually series connected, meaning the armature and field are in series. You have to reverse the connections ro one of them, the armature or the field.



The wiring will look like supply active, field in, field out, brush in (to armature), brush out, supply return. The capacitor is a electrical noise suppressor, just connected across the supply, or sometimes across the brushes.



If it is shunt wound as you seem to describe (meaning the field is across the supply and so is the armature) then the solution is still the same, reverse one of them.

No comments:

Post a Comment