Selecting panels best suited for your MPPT

[Isetech]

You would check the inverter MPPT specs, then choose the panels from data sheets.

to throw in a curve ball its not that simple because you will the electrical characteristics will have the STC and the NOCT.



STC is used by solar panel manufacturers to test and rate their panels. The value that interests us is the maximum power (Pmax) or rated power (Pr), which is the nominal power of a solar panel when you look to buy one. It could also be called peak power.

When the solar energy (Irradiance) is absorbed by a solar panel, it’s converted partly into thermal energy and partly into electrical energy. That means the cell and overall module temperature will increase while producing electricity. However, there are also other environmental factors that influence the PV module temperature.
It is not easy to measure the PV module temperature considering all the meteorological variations. So, scientists defined Nominal Operating Cell Temperature (NOCT) to simplify the calculation.

[Isetech]

6.5 PID Protection and Inverter Compatibility① PV modules may appear Potential Induced Degradation (PID) under high humidity, high temperature and high voltage condition. Modules may appear Potential Induced Degradation (PID) under the conditions below:◇ PV modules install under hot and humid weather condition. ◇ PV modules installation site is under long-term humid environment such as water floating application.② To reduce the risk of PID, on the modules DC connection site, it is recommended to connect the negative to ground. The PID protection measures on system level are recommended as follow ◇ For isolated PV inverter, the negative of the PV modules DC connection side can be directly grounded.◇ For non-isolated PV inverter, isolated transformer is needed to be equipped before applying virtual grounding method for inverter.