Comparisons of the Power-Feedback MPPT Algorithms for the Photovoltaic Systems

Abstract:

The purpose of this paper is to compare three power-feedback maximum power point tracking (MPPT) algorithms used in photovoltaic systems. The Matlab/Simulink is used in this paper to establish a model of photovoltaic system with MPPT function. This system is developed by combining the models of established PV module and DC-DC boost converter with the power-feedback MPPT algorithms of perturbation and observation, incremental conductance and hill climbing, respectively. The system will be simulated under different weather conditions and MPPT algorithms. According to the comparisons of the simulation results, it can be observed that the photovoltaic simulation system can track the maximum power accurately using the three MPPT algorithms discussed in this paper. HC algorithm possesses fast dynamic response, but P&O algorithm is well regulated PV output voltage and power than HC algorithm. The tracking time spent by INC algorithm is a little longer than the other two algorithms. The HC algorithm is suitable for the cases of battery charging which doesn't need extremely stable voltage, and the P&O algorithm is more suitable for the system with precision electric instruments. Furthermore, the INC algorithm is adaptable to the cases of fast changing weather conditions owing to its advantage of no misjudgment.

• Periodical: Applied Mechanics and Materials (Volumes 229-231)
• Pages: 1047-1051
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.229-231.1047
• Online since: November 2012
• Authors: Ting Chung Yu, Yih Bin Lin, Yu Cheng Lin
• Keywords: Hill Climbing, Incremental Conductance, Maximum Power Point Tracking (MPPT), Observation, Perturbation, Photovoltaic (PV) System

References

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