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Title: Hybrid energy storage system and associated converters examination for DC distribution
Authors: Ye, Y
Cheng, KWE 
Ding, K
Wang, D
Bao, Y
Keywords: DC distribution
Bidirectional DC converter
Cell balancing
Hybrid energy storage system
Issue Date: 2013
Publisher: IEEE
Source: 2013 5th International Conference on Power Electronics Systems and Applications (PESA), 11-13 December 2013, Hong Kong, p. 1-7 How to cite?
Abstract: DC distribution main consist of power electronics components and converter. Energy storage system is also required to maintain the voltage stable for DC bus. This paper discusses the structure of a hybrid energy storage system (HESS) of battery and ultracapacitor. A new bidirectional DC-DC buck/boost converter used for energy transfer between DC bus and HESS is also analyzed in detail. It not only can operate bi-directionally, it can also provide three different working modes: buck, boost and buck-boost modes. The buck and boost mode can provide lower and higher voltage transfer ratio than traditional Buck and Boost converters respectively. Its buck-boost mode can provide positive output voltage. A cell balancing circuit with one center-tapped inductor and two active switches is also introduced in this paper. Its advantages of simple structure and energy fast-transferring make it more suitable for ultracapacitor string. Experimental and simulation results verified the feasibility of the two power converter circuit and HESS.
ISBN: 978-1-4799-3276-4
DOI: 10.1109/PESA.2013.6828227
Appears in Collections:Conference Paper

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