Flowchart of P&O algorithm This is a conventional block diagram of P & O algorithm used for solar MPPT. We first have an initial value of duty cycle “D”, we measure the duty cycle value along with the initial power present in the system at a starting time “t”. Power (P)= V *I.
Block diagram for the understanding and implementation of the P&O algorithm Fig. 2 represents the basic block diagram for the understanding and implementation of the P & O algorithm. Here the figure represents the tracking system for the measurement of current and voltage to find out the power output of the PV panel.
Conventional solar panels suffer with non-identical losses (resistive losses, diode leakage, loss of material properties etc.). To overcome these unwanted phenomena, a solar maximum power point tracking (MPPT) algorithm has been introduced.
This modification, together with a form of dead-band for the power-voltage slope value and current difference value, will ensure locking on the MPP. Only variations of the input current with a modulus greater than a preset value will cause the algorithm to resume tracking. Using MPPT with solar panel installations has clear advantages.
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Figure 2. Block diagram for the understanding and implementation of the P&O algorithm Fig. 2 represents the basic block diagram for the understanding and implementation of the P & O
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