Senior Member
Joined: 11/11/2021
Location: United StatesPosts: 241
| Posted: 09:52pm 17 Jun 2025 |
Off-grid profiles still have active anti-islanding just more tolerance for frequency, voltage and rate of impedance changes. Since you are already using an off-grid profile I suggest you find one with anti-islanding disabled completely. IIRC, such profiles have "AI" in the name somewhere.
Your chokes appear to be using common green ferrite cores so it's likely they are saturated at 5500W (> 100A to battery). You'll need to use sendust or similar cores to avoid saturation (see KeepIS threads for more detail). Having said that, I doubt core saturation is the main reason for the distortions you are seeing.
It would help determine the main distortion cause if you could capture the current waveform from the iQ7's. Anti-islanding disturbances are pretty obvious in the current waveform.