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Maximum Power Point Tracking (MPPT)

A control technique used in solar/fuel cell applications to maximize power extraction. It involves adjusting the load impedance (via DD) to keep the operating point at the maximum power point, often using P-V curve analysis.
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The statement of the theorem

Maximum Power Point Tracking (MPPT) requires maximizing the instantaneous power PP with respect to the operating variable, typically the load resistance RLR_L or current II. The condition for maximum power is found by setting the derivative of power with respect to the variable to zero:\ndPdRL=0 or dPdI=0\frac{d P}{d R_L} = 0 \text{ or } \frac{d P}{d I} = 0 \nFor a solar cell model P(V)=V×I(V)P(V) = V \times I(V), the optimal operating point (VMPP,IMPP)(V_{MPP}, I_{MPP}) satisfies the condition dPdV=0\frac{d P}{d V} = 0.