A Short-Distance Running Algorithm Based MPPT Control Strategy for PV Power Systems Under Partial Shading Conditions

This paper presents a new simple approach based on description of a short-distance running race in athletics to find maximum power point (MPP) from PV energy systems, which can improve tracking speed and searching accuracy. The operating principle of this approach is based on the division of the active area of contestants at the starting line. Each position of the contestant corresponds to each duty ratio value to control the DC boost converter. Based on the proposed athletics running algorithm (ARA), a suitable control signal will be found where the load will receive the best electrical power from the PV energy system. With new ideas in terms of regional division as well as updated positions, the global MPP can be found precisely, the positions quickly converge to the global maximum power region. As a result, the proposed method has excellent tracking ability with high accuracy and zero oscillation amplitude. Simulation results proved that the proposed algorithm provided high efficiency, especially in the case of partial shading influences.