[PVsyst 7.2.21 Power Sharing: Error Msg "Number of MPPT input not a multiple of no. of inverters"]

I have checked the simulation and it shows that power sharing is already defined.

Please advise why the losses are still so high. thank you.

[PVsyst 7.2.21 Power Sharing: Error Msg "Number of MPPT input not a multiple of no. of inverters"]

I am currently using PVsyst version 7.4.5 and I would like to follow-up on this issue...

Can i clarify what you mean by "PVsyst has currently some trouble handling imbalances between MPPT powers when they are both due to a difference in nominal DC power, or differences due to the orientation which causes the power to shift from a string to the other."

I ran 2 different simultations recently and i observed a significantly higher inv loss over nominal power for the latter (2.78% more). My question is when should i be enabling the multi-MPPT feature?

1. 125CX-P2 inverter with multi-MPPT feature disabled   

2. 125CX-P2 inverter with multi-MPPT feature enabled with various input DC power but same orientation

[Unable to import custom file due to error msg: "Error while reading date XXX...Limitation of the custom file import at 12 months"]

Dear Michele, 

Good afternoon. I cannot send over the files to support@pvsyst.com due to IT restrictions imposed by my company. I am still pending IT team to whitelist the email address. I have checked through the raw data file but did not notice any missing or non-physical data. Could there be another reason for this?

[Unable to import custom file due to error msg: "Error while reading date XXX...Limitation of the custom file import at 12 months"]

Hi Michelle, 

Thanks for the clarification. I managed to generate 10 separate MET files from the raw data but was unable to generate TMY using the ten MET files.

I am not sure why.

[Unable to import custom file due to error msg: "Error while reading date XXX...Limitation of the custom file import at 12 months"]

Hi,

I was trying to import meteo data into PVsyst which contains 10 years data, but i encountered an error message after running 1 year worth of data (see photo attached).

Please advice.

[PVsyst 7.2.21 Power Sharing: Error Msg "Number of MPPT input not a multiple of no. of inverters"]

I see. Thank you for the clarification. However, I am not seeing any changes in "Inverter Loss over nominal inv. power" % after I managed to normalize the power sharing as shown in the screenshot. I am getting a % loss of 4.26. Is this normal? Thanks.

[PVsyst 7.2.21 Power Sharing: Error Msg "Number of MPPT input not a multiple of no. of inverters"]

Sorry, i don't quite understand the explanation. 

May i know the reason why the number of MPPT in each sub-array must be a multiple of the number of inverters in the configuration it belongs to?

Meaning to say, if I wish to do power sharing across 7 x 125KTL Sungrow inverters with a total of 84 MPPTs, each sub-array that i create has to be a multiple of 7 (e.g., 1,7,14,21, etc)?

Another question i have is whether this is a new feature by PVsyst as i did not encounter such an issue when i was using an older version.

thank you

[PVsyst 7.2.21 Power Sharing: Error Msg "Number of MPPT input not a multiple of no. of inverters"]

Hi there, 

I encountered an error msg saying that the number of MPPT is not a multiple of the number of inverters.

I am trying to do power sharing across 7 x 125 KTL Sungrow Inverters (total MPPT 84). The sum of MPPTs across the 4 sub-arrays adds up to 84 but PVsyst does not allow power sharing across the 7 inverters (e.g., 12 MPPT x 7 = 84 MPPT). Kindly advise.