I measure the parameters of the motor.
On the purchased driver L = 67 μH.
At the manually collected L = 123 μH.
The motor is the same.
Why such difference?
How is the inductance measured?
How to fix the disadvantages of a self-made driver?
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VESC Firmware Version 3.35, Hardware: 410
The inductance measures the whole path from the battery to fets to motor and back again. So if you use thinner wires, longer wires, have thinner pcb traces, etc it will increase.
I still haven't figured out if it actually matters if you measure a different value for the motor because you generally tune them one at a time. So long as your motor detection works I wouldn't worry about it too much.
Thank you for participating
I also had this phenomenon, resistance and inductance measured by VESC4.12 show only the half of the real value, when measured from phase to phase with a constant current source and Kelvin probe.
It is supposed to be half of the measured value between tho motor phases, as it represents the value for each coil, and two wires have two of them in series. That is also stated in the help text about the resistance. Note that when using D termination two coils are not really connected in series, but the equations for the current controllers and observer work out the same way anyway.