don't understand clipping results

i did run simulation for 410 alpha pure r with different IQ8 inverters. results are surprising as IQ8M (midlde version) is resulting in lowest production.
i checked clipping by our and generally clipping is between 9AM and 11AM. why are clipping results not correlated with maximum AC power?
thankstimeSum of IQ8+ Inverter clipping loss AC power limit | (kW)Sum of IQ8M Inverter clipping loss AC power limit | (kW)Sum of IQ8A Inverter clipping loss AC power limit | (kW) 08:00 am                                     1,0                                     5,4                                     0,4 09:00 am                                  24,1                                  44,8                                  16,8 10:00 am                                  47,4                                  71,8                                  37,6 11:00 am                                  37,0                                  58,0                                  28,8 12:00 pm                                     6,2                                  18,9                                     3,5                                 115,7                                199,0                                  87,1Minimum MPPT DC voltage                                      27                                      30                                      32Maximum AC power                                    349                                    325                                    290


 

Hi Arkadiusz,

Whenever the calculated AC output exceeds the inverter's rated AC capacity, SAM sets the inverter output to the rated capacity.

Note that SAM also models DC voltage clipping, so if the array voltage exceeds the inverter maximum MPPT voltage rating, SAM sets the DC operating voltage to the maximum MPPT voltage rating.

If you need help troubleshooting, please attach a .sam file that illustrates the results you are seeing.

Best regards,
Paul.