Hi Team,
There's an issue from the customer need your help：
The voltage sampling is centered on 1.65V, and the ground of the 1.65V reference voltage is the PGND NEU between GND and the inverter side of the grid through a capacitor connection, can the voltage balance of the ground be achieved, will this cause the obtained output VG_SEN_C and other sampling voltage flutter, the problem I am currently encountering is voltage flapping
Supplementary content Three-phase load is suspended, DC voltage is not added, only connected to 24V auxiliary power supply, test AD sampling waveform to the waveform results here as an example to find that the voltage waveform between point A relative to GND is this oscillation, point B relative to GND voltage waveform is less oscillation, but also exist, I want to ask whether this situation is normal or abnormal, if not abnormal can give some suggestions to find the problem
Looking forward to your response
Best Regards,
Ben
