Hi all,
I am trying to drive a 3 phase motor out of a Dyson fan but am out of depth here and would love some pointers. The motor is a LA034-040NN08A and is a three-phase eight-wire brushless DC motor. Specs are DC300V and 25W.
So I assume I need a speed controller and PSU that can output 300v? How would I control the output voltage via an arduino?
I would appreciate any help here, even if its just keywords I can google and dive deeper down into. Thanks
Generally, you need a triple H bridge, one for each phase. Controlling via Arduino is done via PWM, the software required is more or less complex. Better efficiency and performance is obtained by more complex software.
Alternatively, you could use a motor controller (e.g. ESC), which handles that for you.
Initially, you will need to find a suitable drive/controller, unfortunately due to the wide range of motors and applications finding a cheap off the shelf motor driver can be difficult. In this case building your own is a cheaper option, but requires some electronics skill.
After a quick search, I did not find any suitable drivers.
What experience do you have with the mains power? This has a hall sensor to give you position. Look at this link and see if it helps: file:///home/gil/Downloads/stspin32f0601.pdf
The motor driver in the Dyson fan would work.