Brushless delta or wye wound - how to tell?
Hi All,
I am new to electric flight and learned that BL motor windingscan be either "delta" connected (like a triangle), or "wye" connected (like a star). Both have three phase leads of course. Here is the question. If I have a BL motor, how can I tell without asking the manufacturer or physically dismantling it and tracing the wiring? I did some resistance calculations for the theoreticalchange in DC resistance based on measuring across just two phase leads, then measuring with two of them shorted together. Guess what - my calcs show the exact same change in resistance for both types so I can't use this technique to determine how the windings are connected. I was thinking that I need to inject a pulse and see if it returns (using an oscilloscope) since the delta has "feedback" and the wye does not.
Anyone have a simpler way to do this?
Art