String photovoltaics

In the context of photovoltaics, the term "string" is used to refer to a group of photovoltaic modules that are connected in series with each other and connected to a voltage source inverter. This series connection allows more efficient conversion of solar energy into electricity.

Each photovoltaic module generates a certain voltage and current when illuminated by sunlight. When these modules are connected in series in a string or "string", the voltage adds up while the current remains the same. This increased voltage is then used to connect the string to a voltage inverter.

The advantage of using strings is that they allow more efficient conversion of solar energy into electricity, because the voltage inverter works optimally at a certain input voltage. Connecting modules in series in a string will typically increase the voltage and decrease the current, allowing the inverter to operate at its Maximum Power Point (MPP). This ultimately increases the efficiency of the entire PV system.

However, it is important to remember that if any of the modules in the string are shielded or have another problem, this can affect the performance of the entire string. Therefore, it is important to have control systems and to monitor the performance, which will allow problems to be addressed in a timely manner.