Ajay Deepak

AC loss with Pnom is accurate as it is considered Inverter power for percentage loss calculation. Example case: Inverter Power is 200kW, and DC power connected to the inverter is 250kWp. AC loss at STC level = 1.5% of 250kWp which is wrong and loss values will be lesser. AC loss at Pnorm (Inverter) = 1.5% of 200kW which is correct and loss values will be slightly higher than the previous case. Regards, Ajay.

AC loss with Pnom is accurate as it is considered Inverter power for percentage loss calculation. Example case: Inverter Power is 200kW, and DC power connected to the inverter is 250kWp. AC loss at STC level = 1.5% of 250kWp which is wrong and loss values will be lesser. AC loss at Pnorm (Inverter) = 1.5% of 200kW which is correct and loss values will be slightly higher than the previous case. Regards, Ajay.

Please check grid power limit settings. This may be different.

Hi, Can we consider this as the PVSYST limitation for now? Regards, Ajay.

As the maximum input current is not mandated in the OND, I always find it empty in the database. In this case, how PVSYST will know the current limit? For example in the help section "string inverters, current limiting", it mentioned that 15A is the current limit considered. If the data is not filled, then how will PVSYST calculate this value? Mentioning this current value will very help full in better clarification. And for the definition, we can refer to IEC 62894.

That's great. Sorry I didn't notice this.

Hi, PVSYST gives the option to define three voltage efficiency values or single voltage efficiency values. In the report, we will not know whether single or three voltage values are defined. Could you please add the efficiency table in the report with the text as shown below? 1. High Accuracy – Efficiency defined for three voltages 2. Low Accuracy – Efficiency defined for single voltage With the efficiency values table, users can verify the data directly with test results. The efficiency graph will not be sufficient to verify the values.

Hi, In most cases, PVSYST calculates the MPPT current based on the voltage automatically. Could you please mention the MPPT current considered by PVSYST for calculation in the report? At present only MPPT voltage ranges are mentioned.

Hi, Could you please mention the AC cable loss calculation method in the report? This will help to understand the method selected for loss calculation. And this is very much needed when we compare multiple reports.

Hi, Most inverter manufacturers have dual inverter ratings and at lower temperature inverter can generate more power than nominal power. This maximum power is mentioned in the inverter section, but this is not mentioned in the plant AC power, only nominal power is mentioned. So, we will not know the maximum AC power considered by seeing the report.

Dear Sir, From this http://forum.pvsyst.com/viewtopic.php?f=19&t=485 topic I understand that, PVsyst can not give inverter output based on internal inverter temperature. But is it possible for PVsyst to give inverter output based on ambient temperature?