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JACIII Vol.20 No.7 pp. 1086-1093
doi: 10.20965/jaciii.2016.p1086
(2016)

Paper:

An Improved TL Buck Converter for Fast-Charging Energy Storage System Using UCs

Bin Chen, Zhiwu Huang, Rui Zhang, Heng Li, and Zhihui Wu

School of Information Science and Engineering, Central South University
Changsha, Huan 410075, China

Corresponding author

Received:
July 6, 2016
Accepted:
September 13, 2016
Published:
December 20, 2016
Keywords:
UCs, transient response, DC-DC converter, TL buck topology, flying-capacitor
Abstract

Due to the disadvantages of existing ultracapacitor (UC) charging topologies, e.g., slow transient response, an improved three-level (TL) buck charging topology is proposed. Voltage is divied by the energy transformation of the flying-capacitance. The model of the circuit is shifted adaptively on the basis of the dynamic parameters of the reference current, improving the speed of the output current adjustment. Finally, simulation results validate the feasibility of the proposed TL buck topology for the UC energy storage system.

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Last updated on Dec. 15, 2017