HOME NEWS 80A MPPT: 80A Maximum power point tracking
Aug 05,2020

80A MPPT: 80A Maximum power point tracking

80A MPPT:  80A Maximum power point tracking

80A Maximum power point tracking (MPPT) means that the controller can detect the voltage generated by the solar panel in real-time, and track the maximum voltage and current value (VI) so that the system can charge the battery with the highest efficiency.

The principle of solar cells:

The maximum power point tracking control (MPPT) strategy detects the output power of the photovoltaic array in real-time, and uses a certain control algorithm to predict the maximum power output of the array under current operating conditions, and meets the maximum power output requirements by changing the current impedance.

 80A Maximum power point tracking

80A Maximum power point tracking


As the terminal voltage increases, the output power first increases and then decreases, indicating that there is a terminal voltage value near which the maximum power can be obtained. Therefore, in a photovoltaic power generation system, to improve the overall efficiency of the system, an important way is real-time Adjust the working point of the photovoltaic cell to always work near the maximum PowerPoint. This process is called maximum power point tracking-80A MPPT.

Maximum power tracking control method

There are many control methods for maximum power point tracking in photovoltaic systems. The most used method is self-optimizing, that is, the system does not directly detect light and temperature, but determines the maximum power point based on the voltage and current values of the photovoltaic cell itself.

The difference between the MPPT solar controller and traditional solar controller:

For traditional controllers, the charging parameters are set before leaving the factory. The MPPT controller is different. The MPPT controller will track the maximum power point of 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.


 Classic MPPT Solar charge controller

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, the peak voltage (Vpp) of the solar panel is about 17V when the solar panel is manufactured and shipped, which is set according to the standard when the ambient temperature is 25°C.

 

The reason for this setting (Interestingly, unlike our ordinary people’s subjective imagination, the following conclusions may surprise us) is that 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 solar energy can reach 18V!