Sunday, June 22, 2014

Comparision of Maximum Power Point Tracking Algorthim for Solar PV Application


MPPT ALGORTHIM

The purpose of this work is to obtain such an experimental comparison and to suggest which MPPT control algorithm is the most effective on the basis of MPPT efficiency, which is defined as:



where Pactual is the actual (measured) power produced by the PVarray under the control of the MPPT, and Pmax is the true maximum power the array could produce under a given temperature and irradiance. In this work, only MPPT algorithms that could presently be implemented in a low-cost MPPT were considered.



 Fuzzy logic and DSP-based systems were therefore excluded, and the following MPPT algorithms were chosen for further investigation:

1.      PERTURB AND OBSERVE (P&O)
2.      INCREMENTAL CONDUCTANCE (INC)
3.      PARASITIC CAPACITANCE (PC)

4.      CONSTANT VOLTAGE (CV)

SIMULATION MATLAB







PERTURB-AND-OBSERVE

PO Algorthim




INCREMENTAL CONDUCTANCE


CONSTANT VOLTAGE


CONSTANT CURRENT

COMPARISION













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