I have been trying to find the best way to measure 3 phase power for my thesis. My thesis works with RC hobbyist size BLDC motors. I am looking at better modeling the speed controller's efficiencies. Therefore I am measuring the DC power in and the AC power out.
The AC power out is:
Voltage unipolar square-wave
3 phase with no common ground
motor takes about a 6-8 kHz signal frequency
But the Speed controller has a switching frequency of 12 kHz
I can reduce said Vrms limits and Irms limits to achieve better accuracy.
I looked into the ADE 7762 but its Bandwidth looks too small.
Suggestion on which units I should use?