Battery Amps, Motor Amps and Duty Cycle... Please Explain

[professor_shartsis]

@professor_shartsis

bemf_voltage = motor_rpm / motor_kv

pwm_effective_voltage = duty_cycle_%_bldc * battery_voltage

winding_resistance_ohms = (foc_resistance_detection_one_phase_milliohms / 1000) * 2

motor_current = (pwm_effective_voltage - bemf_voltage) / winding_resistance_ohms

torque_newton_meters_per_motor_amp_KT = 60 / (2 * pi * motor_kv)

motor_torque_newton_meters = torque_newton_meters_per_motor_amp_KT * motor_current

battery_current = (pwm_effective_voltage * motor_current) / battery_voltage

^here’s the math behind it from a different thread