Simulation and Optimization of a Hybrid Photovoltaic/Li-Ion Battery System
Source abstract
Abstract
The coupling of solar cells and Li-ion batteries is an efficient method of energy storage, but solar power suffers from the disadvantages of randomness, intermittency and fluctuation, which cause the low conversion efficiency from solar energy into electric energy. In this paper, a circuit model for the coupling system with PV cells and a charge controller for a Li-ion battery is presented in the MATLAB/Simulink environment. A new three-stage charging strategy is proposed to explore the changing performance of the Li-ion battery, comprising constant-current charging, maximum power point tracker (MPPT) charging and constant-voltage charging stages, among which the MPPT charging stage can achieve the fastest maximum power point (MPP) capture and, therefore, improve battery charging efficiency. Furthermore, the charge controller can improve the lifetime of the battery through the constant-current and constant-voltage charging scheme. The simulation results indicate that the three-stage charging strategy can achieve an improvement in the maximum power tracking efficiency of 99.9%, and the average charge controller efficiency can reach 96.25%, which is higher than that of commercial chargers. This work efficiently matches PV cells and Li-ion batteries to enhance solar energy storages, and provides a new optimization idea for hybrid PV/Li-ion systems.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Technologies Research · Photovoltaic System Optimization Techniques · solar cell performance optimization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China
Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai 201209, China
Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Polytechnic University, Shanghai 201209, China
Funding
National Natural Science Foundation of China · Funding Programme Natural Science Foundation of Shanghai · Shanghai Local Capacity Building Programme · Shanghai Sailing Programme · Shanghai Rising Star Programme
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