Abstract
Maximum power point tracking (MPPT) algorithms have become key elements in improving solar photovoltaic (PV) energy conversion systems. Numerous algorithms have been developed and implemented successfully in recent technology. This paper intended to introduce an improved incremental conductance (IC) algorithm based on the mathematical residue theorem. The major difference introduced in this paper is in considering the residual value of the IC to ensure MPPT achievement. Ensuring the minimal residue in IC improves the operation and eliminates the fluctuation around the operation points. Improved energy conversion efficiency has been achieved and the system has been proved mathematically and by simulations. One of the advantages that the system is free of parameters affect and atmospheric condition data are not required. The controller gain is based on sliding mode compensator to improve the uncertainty handling ability of the developed control approach.
Highlights
Due to the environmental concern and the lake of energy resources, developments of renewable energy technology have received many attentions in the last decades
A novel Maximum power point tracking (MPPT) based on residue theorem has been proposed
The proposed MPPT is an improved version of Incremental conductance algorithm
Summary
Due to the environmental concern and the lake of energy resources, developments of renewable energy technology have received many attentions in the last decades. For the most common types of MPPT (perturb and observation and incremental conductance) any fast change in the environmental conditions will cause some problems for the MPPT. These two techniques increase the PV system losses and decrease the system efficiency. A new optimization technique, cuckoo search, is introduced to optimize the PI control parameters of the DC-DC chopper used to MPPT as in [12] All these techniques tried to improve the performance of MPPT but they did not update the reference voltage and power for the tracking purpose. The residue based control strategy has been implemented to the classical incremental conductance MPPT technique.
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