Part Number:DRV10975EVM
How do I calculate BLDC motor power consumption from the DRV109XXEVM software displayed parameters?
I have used the DRV10975EVM (12VDC supplied) to conduct a series of pump tests, where we measured fluid flow and pressure rise, versus speed; I need to determine pump work efficiency versus electrical power input. All the DRV109XXEVM software display parameters were captured, as well as true RMS phase current (via a clamp on current probe) and true-RMS phase-to-phase voltages. Is it correct to assume the PWM Duty cycle percentage X the supply Voltage results in Peak Phase Voltage? Is it correct to assume Power = V phase rms X I phase rms (neglecting the effect of phase angle between V and I) for this PWM control system?