Safety performance simulation for the effect of a photovoltaic module output difference in mega solar photovoltaic systems

The authors stress the importance of photovoltaic module output difference in mega solar photovoltaic systems. The authors first describe modelling of the various types of the crystalline silicon photovoltaic modules and the maximum tracking point operation of the power conditioning system based on the experimental data. Then, the authors discuss the frequency of reverse current and voltage occurrence when replacing photovoltaic modules with different output. Also, discussed are the frequency of reverse current and reverse voltage occurrence when changing the number of replacing photovoltaic modules and the position of replacing photovoltaic modules. As a result, causes that leads to reverse current: difference in open circuit voltage and the number of photovoltaic modules connected serially. Moreover, causes the leads to reverse voltage: difference in short circuit current and the number of photovoltaic modules connected in parallel.