A Modular Cell Balancer Based on Multiwinding Transformer and Single Inductor Circuit for a SeriesConnected Battery String
Keywords:
cell balancer, modular, multiwinding transformer, single inductorAbstract
In this research, a cell balancing topology for a series-connected Lithium-Ion battery circuit is proposed and simulated verified. In particular, the equalization topology based on this modular balancer consists of an intra-module balancer based on a multi-winding transformer (MWT) circuit and an outer module balancer based on a single inductor. This topology offers a solution to overcome the limited number of cells that can be balanced by multi-winding transformers by developing a modularization system. The speed of balancing between cells and between modules is increased by the presence of a single inductor as a balancing circuit between modules. The simplicity of the control system and the reduction in the number of components are the advantages of the proposed topology. The results showed that the zero voltage gap was reached in 5 seconds with the final voltage of each cell being 3.33 (±0.05) V
Downloads
References
Shang Y, B. Xia, C. Zhang, N. Cui, J. Yang, C.C. Mi An automatic equalizer based on forward-flyback converter for series-connected battery strings, IEEE Trans Industr Electron, 64 (7) (2017), pp. 5380-5391 (Journal)
Lim C.S., Lee K.J., Ku N.J., Hyun D.S., Kim R.Y. A modularized equalization method based on magnetizing energy for series-connected lithium-ion battery string, IEEE Trans Power Electron, 29 (4) (2014), pp. 1791-1799 (Journal)
Bui, T.M.; Kim, C.-H.; Kim, K.-H.; Rhee, S.B. A Modular Cell Balancer Basedon Multi-Winding Transformer and Switched-Capacitor Circuits for a Series- Connected Battery String in Electric Vehicles. Appl. Sci. 2018, 8, 1278. (Journal)
Das U. P, Shrivastava P. Tey K. S, Idna M. Y, Mekhilef S, Jamei E, Seyedmahmoudian M, Stojcevsk A. (2020). Advancement of lithium-ion battery cells voltage equalization techniques: A review, Renewable and Sustainable Energy Reviews, 134, 110227 (Journal)
Duan J, Duan M, Zhang K, Lv Z, Sun L. (2020). Research on voltage equalization among multiple supercapacitor modules based on multiwinding transformer, International Journal of Electrical Power & Energy Systems,120 (Journal)
