Deye 8k lifetime : 10 kWc on DC ?

[Polor]

Hi,

Sorry for my basic english.
I have one Deye 8K, with a part of solar panels on AC Coupling (6800W on DC, 3200W on Load side), and one 15 kWh battery.

When I'm offgrid, the inverter quickly stops my micro inverters by frequency shifting, even if the battery is not full. During the day, even if I need more power, the micro inverters won't wake up. I seem to have read on the forums that this regulation is not better with micro inverters on the GEN port. So, I hesitate to put all the panels on the 2 MPPT.

But, approaching the DC input limit of the Deye (10 400 W), am I not going to reduce its lifespan? I live in tropical area, all the panels face south.

Thanks.

 

[timselectric]

You need an equal or greater amount of DC coupled solar to AC coupled solar, for the hybrid inverter to be able to control the inputs smoothly.
It appears that you don't have any DC PV connected. I believe that is why it is acting this way. AC coupled can't be controlled rapidly, as needed.
It should only be an additional source, not the only source.

 

[Polor]

I have 8 panels of 425Wc on each MPPT (6800Wc)

 

[aliarifat794]

The Deye inverter adjusts its output frequency to regulate the input power when the battery is full or approaching full charge. This frequency adjustment causes the microinverters to shut down to prevent overproduction. If you shift all panels to the DC MPPT inputs, it can mitigate the issue of microinverters shutting down due to frequency shifts.

 

[Polor]

Yes, I know that, thanks.

My question is about the lifetime of the inverter, if I approach the DC Input limit

 

[timselectric]

Yes, I know that, thanks.

My question is about the lifetime of the inverter, if I approach the DC Input limit

Not an issue. It's rated for the limit it can draw.

 

[Polor]

Ok thank you