Inwo
10 kW
8kw induction motor runs fine using s6 80v controller in 2000lb vehicle.
Same motor runs great using s4 80v gen4 in <1000lb vehicle.
S4 in the heavy vehicle chatters harshly at low speed and high torque demand.
I don't know the proper term for this. Cavitation, cogging?
Turning the drive profile torque down to 60% works, but at high cost in acceleration.
It may be as simple as clipping on overcurrent. Although full throttle in torque mode is fine when over a couple thousand rpm.
A way to limit torque at low rpm may cover up the problem.
Lower performance is expected with the smaller controller, but not this extreme.
Same motor runs great using s4 80v gen4 in <1000lb vehicle.
S4 in the heavy vehicle chatters harshly at low speed and high torque demand.
I don't know the proper term for this. Cavitation, cogging?
Turning the drive profile torque down to 60% works, but at high cost in acceleration.
It may be as simple as clipping on overcurrent. Although full throttle in torque mode is fine when over a couple thousand rpm.
A way to limit torque at low rpm may cover up the problem.
Lower performance is expected with the smaller controller, but not this extreme.