Delta or Wye

[ReddyWatts]

The WYE motor winding is used in higher torque or higher voltage applications. Typically, DELTA motor winding is used in lower voltage or higher speed applications.

If you take a Wye winding motor (1000kv)and change it to a delta winding motor you will see it change to 1732kv. You will see a higher kv motor with less torque. Torque will be reduced by 43%.

Three phase motors come in two wiring patterns. It is called Delta because the three phases are hooked together in a triangle arrangement. Phase one uses terminals A & B. Phase two uses B & C. Phase three uses C & A. In electrical talk the phases are 120 degrees out of phase with each other. You could think of it as firing order in a multi cylinder gas engine. The Electronic Speed Control (ESC) first talks to or sends power to phase one. Then it waits 120 degree and sends power to phase two. And at 240 degrees it sends power to phase three. At 360 degrees (120 X 3) the whole process starts over again.

Y wind where each leg of the Y is a phase and the center of the Y is common. Y wind typically has higher winding resistance as two windings are in series for each phase. This is why some controllers have problems with delta motors. Delta gives a lower voltage feedback pulse to the controller.

I guess the delta winding could be used in a a lighter, lower voltage. high rpm setup or a hydro that does not require a lot of torque. The more effecient wye winding works in all applications and is better for heavier mono or cat setups.

Anyone can chime in here. Something new I am trying to understand.