motor current vs. battery current & duty cycle

[oded]

analysing the last trip via the VESC tool, I see that most of the time the motor (Phase) current is 3, or 4 times higher than the battery current (can be seen clearly in the attached screenshot).
when climbing steep hills. the motor current is very high (over 150 amps) while the battery's current is quite low (about 40 amps). riding fast on smooth terrain, and the battery current is higher.
is this the norm? something to do with duty cycle?

the bike is a 48v 27amp, off road brushless system rig, with a Vesc 100/250.
battery limit is about 100 amps, and motor can sustain 150+ amps.

 

[liveforphysics]

The motor windings and stator iron are an inductor. The inverters MOSFET switches have an intrinsic diode that flyback conducts into when the switch is off.

This makes a buck converter. Deathbike could produce 660Amps of RMS phase current while pulling under 10Amps of battery current while the motor is at walking speeds.

Short answer is, that's intended normal behavior.

 

[oded]

Thanks!
what I am getting to is what will be the best duty cycle parameters for slow technical hard enduro? steep rock climbs at low speed. don't really care about speed & fast riding.
should I leave the duty cycle parameters to 0.5% - 95% (this is the default)?