Energy Management Strategy for Direct Current Microgrids with Consideration of Photovoltaic Power Tracking Optimization

Fudong Li (), Zonghao Shi, Zhihao Zhu and Yongjun Gan
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Fudong Li: School of Mechanical and Electrical Engineering, Beijing Information Science and Technology University, Beijing 100192, China
Zonghao Shi: School of Mechanical and Electrical Engineering, Beijing Information Science and Technology University, Beijing 100192, China
Zhihao Zhu: School of Mechanical and Electrical Engineering, Beijing Information Science and Technology University, Beijing 100192, China
Yongjun Gan: School of Mechanical and Electrical Engineering, Beijing Information Science and Technology University, Beijing 100192, China

Energies, 2025, vol. 18, issue 2, 1-29

Abstract: In response to the uncertainty of renewable energy output and the fluctuation of load, this paper proposes a hybrid energy storage management strategy based on the State of Charge (SOC) to smooth power fluctuations and thereby improve the power quality of photovoltaic energy storage DC microgrids. Firstly, a hybrid algorithm for power tracking control is formed by incorporating the Particle Swarm Optimization (PSO) algorithm into the variable step-size Incremental Conductance (INC) method, thereby optimizing the maximum power point tracking control system of the photovoltaic system. Then, a first-order filter is employed for the initial allocation of demand power. Taking the SOC of supercapacitors and energy storage batteries as a reference, a secondary power allocation energy management strategy based on rule-based control is proposed to ensure the service life and application safety of the hybrid energy storage system. Finally, simulation experiments are conducted in MATLAB/Simulink 23.2 (R2023b). The results indicate that the proposed energy management strategy can maintain the SOC of the hybrid energy storage system at a reasonable level and effectively smooth DC bus voltage fluctuations.

Keywords: hybrid energy storage; energy management; state of charge; DC microgrid (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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