For ADE7880 based application, with 3-wire Delta Configuration. I want to know how to calculate energy (killo-watt-hour) and power factor.
Upon the data sheet, I must set the correct CONSEL bits, 01b for 3-wire delta. Any other setup I need to do?
2. Voltage values
when reading xVRMS registers:
AVRMS value presents the line voltage between phase A and phase B
BVRMS value presents the line voltage between phase A and phase C
CVRMS value presents the line voltage between phase C and phase B
is it right?
3. Current values
when reading xIRMS registers:
AIRMS value = Ia-Ib
BIRMS value = Ia-Ic
CIRMS value = Ic-Ib
is it right?
4. Power factor
with 3-phase 4-wire Wye configuration, I always set to the line accumulation mode, and get power factor from xPF registers.But on the Delta configuration, how can I calculate the phase power factor? I don't think I can use xPF registers, is it right?
Can I set ANGLESEL bits on COMPMODE register to 00b(angle between phase voltage and current), then calculate the cosin value of the angle measured? If so, do I have to calibrate the phase angle in order to get the accurate power factor?
5. energy calculation (killo-watt-hour)
Upon AN-639, revision A, page 15, it provides the equation to calculate the active power. How can I calculate killoWatt-Hour energy value?
Thank you very much for the help.