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http://dx.doi.org/10.6113/JPE.2014.14.3.499

Bi-Directional Multi-Level Converter for an Energy Storage System  

Han, Sang-Hyup (Department of Electrical Engineering, Kyungpook National University)
Kim, Heung-Geun (Department of Electrical Engineering, Kyungpook National University)
Cha, Honnyong (School of Energy Engineering, Kyungpook National University)
Chun, Tae-Won (Department of Electrical Engineering, University of Ulsan)
Nho, Eui-Cheol (Department of Electrical Engineering, Pukyong National University)
Publication Information
Journal of Power Electronics / v.14, no.3, 2014 , pp. 499-506 More about this Journal
Abstract
This paper proposes a 3 kW single-phase bi-directional multi-level converter for energy storage applications. The proposed topology is based on the H-bridge structure with four switches connected to the DC-link. A simple phase opposition disposition PWM method that requires only one carrier signal is also suggested. The switching sequence to balance the capacitor voltage is considered. The topology can be extended to a nine-level converter or a three-phase system. The operating principle of the proposed converter is verified through a simulation and an experiment.
Keywords
Multi-level converter; Power conditioning system; PWM strategy; Renewable energy sources;
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Times Cited By KSCI : 4  (Citation Analysis)
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