Simulation and experimental design of a new advanced variable step size Incremental Conductance MPPT algorithm for PV systems.
Improvement of the efficiency of photovoltaic system based on new maximum power point tracking (MPPT) algorithms is the most promising solution due to its low cost and its easy implementation without equipment updating. Many MPPT methods with fixed step size have been developed. However, when atmospheric conditions change rapidly , the performance of conventional algorithms is reduced. In this paper, a new variable step size Incremental Conductance IC MPPT algorithm has been proposed. Modeling and simulation of different operational conditions of conventional Incremental Conductance IC and proposed methods are presented. The proposed method was developed and tested successfully on a photovoltaic system based on Flyback converter and control circuit using dsPIC30F4011. Both, simulation and experimental design are provided in several aspects. A comparative study between the proposed variable step size and ﬁxed step size IC MPPT method under similar operating conditions is presented. The obtained results demonstrate the efficiency of the proposed MPPT algorithm in terms of speed in MPP tracking and accuracy.
Department of Electrical Engineering, High School Polytechnic ENP, Algeria. Electronic address: abdelhamid.loukriz@g.enp.edu.dz.
Abdelhamid
A
Loukriz
Department of Electrical Engineering, High School Polytechnic ENP, Algeria.
Mourad
M
Haddadi
Electrical Engineering Department, Faculty of Technology, Msila University, 28000 Msila, Algeria. Electronic address: messalti.sabir@yahoo.fr.
Sabir
S
Messalti
Dspic30f4011 control circuit; Flyback converter; MPPT experimental design; Modified incremental conductance MPPT algorithm; Variable step size MPPT algorithm