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http://dx.doi.org/10.6113/TKPE.2022.27.3.192

Control Technique of Triple-Active-Bridge Converter and Its Effective Controller Design Based on Small Signal Model for Islanding Mode Operation  

Jeon, Chano (School of Electrical & Computer Engineering, UNIST)
Heo, Kyoung-Wook (School of Electrical & Computer Engineering, UNIST)
Ryu, Myung-Hyo (Power Conversion & Control Research Center, KERI)
Jung, Jee-Hoon (School of Electrical & Computer Engineering, UNIST)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.3, 2022 , pp. 192-199 More about this Journal
Abstract
In DC distribution systems, a TAB converter employing multiple transformers is one of the most widely used topologies due to its high power density, modularizability, and cost-effectiveness. However, the conventional control technique for a grid-connected mode in the TAB converter cannot maintain its reliability for an islanding mode under a blackout situation. In this paper, the islanding mode control technique is proposed to solve this issue. To verify the relative stability and dynamic characteristics of the control technique, small-signal models of both the grid connected and the islanding mode are derived. Based on the small-signal models, PI controllers are designed to provide suitable power control. The proposed control technique, the accuracy of small-signal models, and the performance of the controllers are verified by simulations and experiments with a 1-kW prototype TAB converter.
Keywords
TAB (Triple-Active-Bridge) converter; DC distribution; Grid connected mode; Islanding mode; Small-signal model;
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Times Cited By KSCI : 2  (Citation Analysis)
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