Hi all – I’m fairly new to the PV EYA world and have a few questions which will help me understand mismatch losses I was hoping someone could answer. Apologies in advance for any silly queries! The first query I have is as follows: I understand that for modules connected in series, the string current is equal to the current of the ‘weakest’ modules’ current and that the string’s voltage is calculated through adding each module’s voltage together. When is comes to connecting the strings in parallel (which is how they are connected into the inverter inputs?) I am under the impression that the currents are added together. What is the theory behind calculating the voltage at the inverter? Is the voltage equal to the voltage of the ‘weakest’ string’s voltage? Again, my understanding is that strings connected in parallel must have the same voltage so perhaps there is some sort of conversion going on at the inverter input that equates all the string’s voltages?
