What exactly is MPPT?

Maximum Power Point Tracking (MPPT) is a new technology, which is an upgraded product of the traditional solar charge and discharge controller.


Principle of MPPT

To charge the battery, the output voltage of the solar panel must be higher than the current voltage of the battery. If the voltage of the solar panel is lower than the voltage of the battery, the output current will be close to zero. Therefore, for safety reasons, when solar panels are manufactured, the peak voltage (Vpp) of solar panels is about 17V, which is set according to the standard when the ambient temperature is 25°C. When the weather is very hot, the peak voltage Vpp of the solar panel will drop to about 15V, but in cold weather, the peak voltage Vpp of the solar energy can reach 18V.


Let's go back and compare the difference between the MPPT solar controller and the traditional solar controller. The traditional solar charge and discharge controller is a bit like a manual gearbox. When the engine speed increases, if the gearbox of the gearbox does not increase accordingly, it will inevitably affect the vehicle speed. But for the MPPT solar controller, the charging parameters are set before leaving the factory, that is, the MPPT controller will track the maximum power point in the solar panel in real time to maximize the efficiency of the solar panel. The higher the voltage, the more power can be output through maximum power tracking, thereby improving the charging efficiency. Theoretically speaking, the solar power generation system using MPPT controller will increase the efficiency by 50% than the traditional, but according to our actual test, due to the influence of the surrounding environment and various energy losses, the final efficiency can also be increased by 0%-30% .


In this sense, the MPPT solar charge and discharge controller is bound to eventually replace the traditional solar controller

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