Current-Sensorless Control Strategy for the MPPT of a PV Cell: An Energy-Based Approach

Figure 5

The PV cell’s transfer and output power functions at several input solar irradiance levels.

(a) PV cell transfer function at input solar irradiance levels (solid black lines); maximum power impedance function at MPP (blue dot line)

(b) PV cell output power function at input solar irradiance levels (solid black lines); maximum power point trajectory (blue dot line)