In the past century, the mankind has invented a number of amazing things. Well! Solar panel is indeed one of the greatest of all the inventions. The conversion of light energy to electrical energy is the biggest blessing ever as it has made the life of millions of people easy and smooth. There are a number of issues that can damage a solar panel; thermal mismatch is indeed one of them. This is a common problem especially with old string inverters. When Photovoltaic cells get damaged by heat, thermal mismatch occurs. It might sound odd but the reality says that heat can damage the functionality of solar PV modules.

PV modules are generally manufactured in such a way that they can tolerate a specific temperature; beyond the threshold level, the system literally stops working. The standard rate says that every PV module has 60 PV cells. Specification sheet can highlight the temperature co-efficient of every module; this co-efficient reveals the change in efficiency per degree Celsius change in temperature. Two types of PV modules are pretty popular namely Monocrystalline Silicon and Polycrystalline Silicon. The second type of module has more susceptibility to withstand high temperatures.

The functionality of PV cells varies widely; precisely, every PV cell works differently. PV cells operate at different temperatures; generally, these cells are placed in an array that means in a series circuit. So, if one of the cells gets damaged by the thermal mismatch, then it can affect the other cells too in an array. Well! This was a common problem with the old string inverters and thus, it is always advised to go for an inverter upgrade. These new generation inverters come with 20 years or more than that solar inverter warranty which is indeed brilliant. We always suggest that to ensure optimum support, inverter upgrading is a must.

Thermal mismatch can occur due to various reasons. In the following section, we have listed a few reasons.

When power dissipation is limited to one particular area

If air is not present in the middle portion of an array.

When current production differs from one cell to another, thermal mismatch occurs.

In case, the cells get damaged, thermal mismatch occurs.

So, if thermal mismatch is damaging the performance of your solar PV system, you must go for such an inverter that comes with proper solar inverter warranty. Ensure optimum performance and high protection for your PV cells in every way possible.

For more information https://www.solarplants.org.uk/inverter-solar-upgrades/