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- Title
Mathematical Modeling and Performance Evaluation of Switched-Capacitor-Based Battery Equalization Systems.
- Authors
Ho, Kun-Che; Liu, Yi-Hua; Ye, Song-Pei; Chen, Guan-Jhu; Cheng, Yu-Shan
- Abstract
The battery storage system (BSS) is one of the key components in many modern power applications, such as in renewable energy systems and electric vehicles. However, charge imbalance among batteries is very common in BSSs, which may impair the power efficiency, reliability, and safety. Hence, various battery equalization methods have been proposed in the literature. Among these techniques, switched-capacitor (SC)-based battery equalizers (BEs) have attracted much attention due to their low cost, small size, and controllability. In this paper, seven types of SC-based BEs are studied, including conventional, double-tiered, modularized, chain structure types I and II, series-parallel, and single SC-based BEs. Mathematical models that describe the charge–discharge behaviors are first derived. Next, a statistical analysis based on MATLAB simulation is carried out to compare the performance of these seven BEs. Finally, a summary of the circuit design complexity, balancing speed, and practical implementation options for these seven topologies is provided.
- Subjects
RENEWABLE energy sources; MATHEMATICAL models; CIRCUIT complexity; BATTERY storage plants; ELECTRIC vehicles
- Publication
Electronics (2079-9292), 2021, Vol 10, Issue 21, p2629
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics10212629