DIY yokeless Axial Flux motor

Projects
1

Hello

I built a simple DIY yokeless axial flux motor with off-the-shelf parts.

The stator consists of 6 concentrated windings around steel spools made from weld nuts. The rotor is made from two steel disks, with 8 magnets each, connected togethder by a shaft.

I’m using an MT6701 magnetic encoder in ABZ mode.

ODrive V3 settings:

odrv0.axis0.encoder.config.cpr = 4096
odrv0.axis0.motor.config.pole_pairs = 4
odrv0.axis0.motor.config.current_lim = 5
odrv0.axis0.controller.config.vel_limit = 25
odrv0.config.enable_brake_resistor = True
odrv0.axis0.config.startup_motor_calibration = True
odrv0.axis0.config.startup_encoder_offset_calibration = True
odrv0.axis0.config.startup_closed_loop_control = True
odrv0.axis0.controller.config.control_mode = CONTROL_MODE_VELOCITY_CONTROL

The next version will have a better mechanical design so that I can do some toque testing etc.

Cheers

Carelsbergh Stijn

2

This is awesome, thanks for sharing!

3

Hello Carelsbergh! I would like to ask you a few questions. I am thinking about building the motor you built for his science project. Let me know if we could connect briefly. Thanks for the video!

4

My son that is.

5

Hello

Feel free to ask your questions here on the forum so that others can also use this information. If you don’t want that you can send me a message here on the forum or on Instagram (stijns projects).

Cheers

Carelsbergh Stijn

6

Great! Do you have the geometry available for the 3D printed parts? We have access to a printer.

7

Hello

You can find the files on my github.

stijnsprojects/Axial-Flux-motor-V1

Cheers

Stijn