Thank you for moving this into its own topic - I wasn’t sure it was sufficiently novel, but now I can supply more information without cluttering the old thread.
At this point I can accept the standard Myxa falling short of supplying the necessary current, and I will contact your colleague regarding the OpenMyxa design. I have been reviewing the design these past couple days, as it seems to fit our power requirement perfectly - I mistakenly assumed that it was not yet ready for testing.
That said, in the interest of not sounding crazy (putting 1.5kW through a Myxa level of crazy), here’s some hardware information:
Battery: 6s (25.2V max) Lithium Ion pack
- 22 Magnetic Poles
- Motor Constant of 465Kv
- Winding Resistance of 0.052 Ohm
Propeller: Graupner E-Prop 15" x 8"
ESC: Myxa A (3D-Printed Case)
I’ve reviewed the video I recorded, and the peak phase current I witnessed was 47.4A (775W).
Do you know off hand what shunt current would trip the hardware overload? Perhaps the GUI sampling was missing the peaks.
I have read up on some of your other posts, and wonder if this excerpt may have bearing:
Considering the reported RPM and known Kv of the motor, that is.
It may be a rather inconvenient medium, but I have attached a screen recording of my testing. I apologize for the periods of inactivity, as the test stand was in a protected enclosure and slowed down the testing. DC Overcurrent is first reported at the 2:45 mark, and gets more interesting from there.
vokoscreen-2019-05-01_14-26-39.mkv (4.2 MB)
Thank you for addressing my concerns - at this point I mainly wish to know what triggered the behavior in my case.