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MULTIPLE MPPTS INVERTER


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HELLO. 

i have a pv project with several iinverters Goodwe GW100K_HT. 

my problem is : 

i connect several strings that in total are 13. 

the inverter has total 10 mppts with 2 dc inputs each( 20 dc inputs in total)

i have 13 strings to connect. 

i do this in 5 inverters. 

in the global system summary i see the number of inverters is 6.6. 

the correct should be 5. 

i go to the power sharing and i get the message : the sum of the mppt inputs in the sub-arrays is not a multiple of the number of inverter mppt inputs. 

the above message is true but it shouldn't be a problem. the inverter allows to connect more strings than the mppts . therefore it is not a problem. 

how can configure my system so that it is correct ? 

( PS. one bypass is to create inverters with the exact mppts for each number of strings that i connect for each inverter.  ( that is not entirely correct because then i will get better (false) yield. but it worked to bypass the problem. in fact this is the only solution that worked. ) 

i will be waiting for your answer. 
thank you.  

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