How do I hook up AabBCcaABbcC for wye or delta?

[StuUK]

For Delta do I connect the start of “A” to the finish of “C”. The start of “b”
to the finish of “A”, and the start of “C” to the finish of “b”

For wye do I just join all the starts together and use the finish wires for the esc[/b]

[swatson144]

from the tut, which works for me.

You need to connect the
6 wires thusly: End of phase 3 to start of phase 1, end of phase 1
to start of phase 2, end of phase 2 to start of phase 3.

I usually leave all my starts about 2" shorter than the finishes, thusly make a cheat sheet like long green- short red, LR - SC, etc. Just to keep me from outsmarting myself. Or when using 1 color I leave each wire 2" longer than the last ie start of 1= 4" f1=6" s2=8" etc. so I can make a cheat useing shortest=1 longest = 6. Iknow 2" sounds like a lot but wire is cheap, and you can loose about 1/2" in the routing, so if you use 1" it is very easy to come up with 2 wires uncomfortably close in length :(

For wye I usually connect the finishes together and run the starts to the esc. The starts are all captured by the wrapped over wires, and the finishes want to get in the rotor. Connecting the finishes together brings them back toward the center and out of the way. :D

[Happy|Harry]

remember that the starts in lrk are 120º from each other ;)

phil

[Q]

LRK = 12 arm stator
Three phase = 4 arms per phase
A 120° shift per phase seems rather difficult to me here.

Even on a 9 arm stator I don't see why you really need to shift the starts 120° as the three coils of the same phase are powered at the same time, no matter where you start winding.

[swatson144]

remember that the starts in lrk are 120º from each other ;)

phil

Hmm my last (distributed LRK) went start of p1 on arm 1 laying between arms 1 and 12, start of p2 on arm 3 between arms 3 and 4, start of p3 on arm5 between 4 and 5. Heck there only appears to be 1 arm between the start of 2 and phase 3. How do I get 120 degrees from that? :wink:

[Happy|Harry]

hmmm looks like 120º between starts to me, of course i might be wrong in thinking that 1/3 of 360º is 120º? :P, unlike cdrom motors where the starts are only 40º apart

[swatson144]

Nice sketch HH. Kinda unique way of winding starting on arm 2, I've never tried it like that. :shock: I don't mean to sound testy (I'm not) at all, but I seriously want to ask if that method (which will obviously work) gets anything other than the starts at 120 degrees? ie more turns fit etc.

I'm pretty new to this and learning as I go. Your sketch shows aACcbBAacCBb which is inverse of the way I wound mine, and since the poles are NSNSNSetc would have to work also, I hadn't thought of that, else it would be like saying your magnets are wrong they HAVE to be SNSNSNetc :) . I mostly just plod along and if I have any q's I try what I think is right and keep in mind that it may be wrong to mend an issue later. So far I've been lucky and arive at something electrically similar to what I want. Seems the more arms the more ways to do the same thing. I don't recall if I had to make any 3/4 turns that don't count on mine to get to the next pole/wind direction. That may be an issue with high turn motors. It looks like the only ones on your chart are on arms 7 and 11. It would take me a whole day to duplicate your drawing with my wind method. I suck at graphics progs / cad.

I just got back to the house from flying and have rec'd my latest shipment of mags including the 12x5x2mm I need to finish my next 10 pole. All the machining is done but the bearing tube.

I've been blessed with 2 calm days in a row calm = gusts less than 15mph around here and have spent some time on the sticks :D

[Q]

Sorry, you are totally right. Three phases over 360° is indeed 120° :? :? :? :? :? :? :? :? :?

[Happy|Harry]

no worries guys, the sketch is actually taken from mfly.de's site and is the proper concentrated LRK wind not a winding scheme of my own creation, the distributed LRK is the same in that the starts are 120º apart this is one of the many differences between 9tooth and LRK winding schemes :)

i wish the weather would settle down a bit here, i think i've only gotten to fly outside twice since the start of december :(

phil

[panelpni]

Try visit "www.powerditto.de" A real scoohl s :wink: ite!!!