Actro motor. Interesting stator design. 24N8P

[modisc731]

Very interesting stator design.

[Stolla]

Indeed very interesting, wonder what the reasoning behind such a fancy design. They make very good motors though.

[modisc731]

0.2 laminations. Glue used to fixed the wires is quite different from the one used to fix the stator on the stator holder. The former can be easily soften and removed by acetone (6 hours of sinking in acetone), while latter has no change.

Further, The rotor is definitely CNC made from a single piece of iron. Stator holder seems to be quite different from what scorpion used now, very stiff. some kind of aluminium alloy.

THe brand seems to be outdated already, sadly. I believe the stator design is optimized for distributed winding, I figured this out when i remove the wires from the stator. Btw, the motor must be hand-winded. Copper fill of original winding looks already very tight. A rewind using thicker wire, may be very difficult, and may not improve much. Germany stuff really rocks.

[modisc731]

These stators are specailly designed for this overlaping winding. (not wave winding; both overlaping and wave are distributed windings).

Rewind using 16AWG (from Techfix, 200 degree C). 4T. Connections to be determined, Y or D based on later application.

To note that the stator/stator holder can couple with a 4035 scorpion 8P rotor, very interesting.

[Blades_Cuts]

both overlaping and wave are distributed windings

Not quite true. It is not distributed until you "distribute" the "conductors"(the wires inside the slot) within the slots per pole per phase. There are two types, concentric, and stepped. It's a technique for reducing harmonics and cogging torque. I think it's only practical on "huge sized" motor and generator, not on these "small mators" we use in this hobby,

What you have there still falls on "concentrated coil" cathegory, 4 slot coil span,

[modisc731]

attached is wave winding. before i believe is overlap winding. Both distributed winding.