I have designed a metering device using an ADE7953 with a rogowski coil. My main Microcontroller (ARM M0+) can succesfully communicate and read electrical information from the ADE IC.
I have had no big issues, and I have found that the ADE7953 IC is really robust and very easy to get started with.
I can succesfully read Voltage, Ampere, reactive/Apparent power, but there is something wrong with the Active power and the power factor. These are some measurements/registers I can read:
VRMS (0x31C) - IRMSA (0x31A) - PFA(0x10A) - AWATT(0x312) - AVAR(0x314) - AVA (0x310)
5696512 186153 0 168 61989 63209
223.13V 1.82A 0.00 4.02W 1466.26Var 1494.73VA
5697412 185602 0 183 61868 63017
222.89V 1.82A 0.00 4.19W 1463.14Var 1491.47VA
5682620 185196 0 159 61597 62762
222.57V 1.81A 0.00 3.86W 1456.87Var 1484.85VA
5680437 185192 0 208 61530 62691
222.25V 1.81A 0.00 4.78W 1455.26Var 1482.55VA
First line is the register measurement, and second line is the real value after calibration. I am measuring from an electrical heater, therefore the reactive power should be small.
I can see the following:
- Mesurement are stable, except the Active power (AWATT)
- Power factor is always cero. PFA register is a signed 16 bits, maybe the No-Load detection is activated?
- There seems to be something wrong with the active power, there is not a stable reading, and it decreases when I consumes more power.
- Reactive and apparent are stable and high enough
I have doublechecked that the registers are correct, but I am now stuck. Can you help me?