Was curious if there is anything special to achieve proper motor detection in both BLDC and FOC modes for large hub motors such as the one linked below?
Was curious if there is anything special to achieve proper motor detection in both BLDC and FOC modes for large hub motors such as the one linked below?
Running the same motor on my bike in FOC, it passes detection fine. I saw recommendations to bump up the time constant to 4000 for larger motors but I didn't have to do that.
These things are hardware dependent, so your experience may vary. I wouldn't bother with BLDC if FOC works.
NextGen FOC High voltage 144v/34s, 30kw (https://vesc-project.com/node/1477)
@vadicus the issue I'm observing with this motor is very rough sounds coming from the motor during high currents. Sudden increases in acceleration lead to abs max current faults. Seems like some motor paramter is not quite right. FW is the latest 5.01. Thoughts?
Stutter and ABS faults would normally happen due to bad inductance or flux linkage settings or both. The easiest thing to try to mitigate that is to drop the observer gain. The motor should run smoother under most circumstances and ABS faults should go away. That's just a temporary fix, obviously, but if it helps, you would need to research why calculations are wrong.
What does your current peak at when you accelerate from 0rpm? I've this same experience but then dialed it in and it works reliably for a few months now. I am running fw v. 4.2 though. yet to try 5.00
NextGen FOC High voltage 144v/34s, 30kw (https://vesc-project.com/node/1477)
Yes it appears that current peaks when accelerating from 0rpm. Seems to be a matter of dialing it in properly. Might try using the original VESC for detection then just use those values.
I have two hub motors (qs205 v4 4kw and a qs260 v4 10Kw) running on VESC.
I can get them to run alright using water cooled 75300 and a 75450, with some decent power flowing, however, I would like to know the steps I can take to test and analyze some acceleration events and fine tune these settings for absolute maximum power delivery
I am able to see 40+kw peak and a solid 28Kw continuous on the 75300, but I get the same buzzing/,humming at very high currents. If I could tune this out and have some better performance and distance per kwh, It would bring this to the next level. Basically, a rough write up on how to "dyno tune" high current motors with heavy saturation would be extremely beneficial
watercooled 1200A monster 75/450 razor
QS260 v4 70h 12" hub motor
72v samsung sdi 70Ah parismatic power cells
120+mph and as silent as a church fart (pfffffffffffffff)