Study on Simplified Model for PV System Based on Functional Equivalence

Abstract:

The model of the photovoltaic power generation system is complex, and it requires multiple iterations in calculation, which is not available for simulation analysis and calculation when a large number of PV systems connected to the grid. This paper presents a simplified model for PV system based on functional equivalence. DC part consisting of PV array and MPPT controller is simplified into a maximum output model; and inverter with its control strategy, of which the function is to achieve decoupling control of active and reactive power, are simplified to controlled voltage source with control module. Last, simulation tests are conducted based on Matlab/Simulink platform. The results show that the simplified model can not only ensure accuracy, but also improve the simulation efficiency, which is of a good practical value.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 1221-1226
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.1221
• Online since: June 2014
• Authors: Dong Guo*, Xing Jie Liu
• Keywords: Equivalent Modeling, Functional Equivalent, Pv System, Simplified Model

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