How does the MPPT solar controller work?
2022-06-01
The MPPT solar controller is generally completed by a DC/DC conversion circuit. The photovoltaic cell array and the load are connected through a DC/DC circuit. The maximum power tracking device continuously detects the current and voltage changes of the photovoltaic array, and converts the DC/DC according to the change. The duty cycle of the PWM drive signal of the controller is adjusted.
For linear circuits, when the load resistance is equal to the internal resistance of the power supply, the power supply has the maximum power output. Although both photovoltaic cells and DC/DC conversion circuits are strongly nonlinear, they can be considered linear circuits for a very short period of time. Therefore, as long as the equivalent resistance of the DC-DC conversion circuit is adjusted so that it is always equal to the internal resistance of the photovoltaic cell, the maximum output of the photovoltaic cell can be realized, and the MPPT of the photovoltaic cell is also realized.
In general, the MPPT solar 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, which improves the charging efficiency. In this sense, the MPPT solar charge and discharge controller is bound to eventually replace the traditional solar controller.
For linear circuits, when the load resistance is equal to the internal resistance of the power supply, the power supply has the maximum power output. Although both photovoltaic cells and DC/DC conversion circuits are strongly nonlinear, they can be considered linear circuits for a very short period of time. Therefore, as long as the equivalent resistance of the DC-DC conversion circuit is adjusted so that it is always equal to the internal resistance of the photovoltaic cell, the maximum output of the photovoltaic cell can be realized, and the MPPT of the photovoltaic cell is also realized.
In general, the MPPT solar 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, which improves the charging efficiency. In this sense, the MPPT solar charge and discharge controller is bound to eventually replace the traditional solar controller.
