Modeling and Control of Wind-Solar-Battery Energy System – Energetic Macroscopic Representation Approach

Tóm tắt

Alternative energy sources, especially solar and wind energy, play an important role in the near future. However, building systems to make full
use of them in areas without grids is still a problem that requires many studies. A commonly used system configuration is solar-wind energy
system combined with a battery storage system. Recognizing that the modeling and control design of this mixed system by conventional
methods is complex, this paper employs an effective approach using Energetic Macroscopic Representation (EMR) to represent a renewable
energy conversion system model including solar and wind power combined with a battery system. Thanks to this formalism tool, control
development for this complex system is straightforward. Besides, the maximum power point tracking strategy is applied to maximize the energy
received from environment. The studied grid-isolated wind-solar-battery power system is simulated in MATLAB/Simulink under various
real-world conditions to validate the reliability of the proposed method. The results confirm that this system always satisfies the loads power
demand with the stably DC bus voltage.