New Mode Transition of H-bridge Bi-directional DC-DC Converter in Distributed Generation System   A. Yi Lingzhi, B. Chen Yu, C. Ren Xuliang and D. Zhang Hao 2017/04/25

Abstract

There are many problems in H-bridge bidirectional DC-DC converter, such as slow dynamic
response and bus-bar voltage overshoot etc. The proposed method of dual carrier modulation which can greatly simplify the control method, is used to smooth mode transition. Then a Fractional Order PID (FOPID) controller which can provide an excellent dynamic performance, more flexibility and robustness for the system, is investigated. Finally, simulation model has been built, and an 1kW experimental prototype has been built.

Authors and affiliations

A. Yi Lingzhi(1,2), B. Chen Yu(1,2) , C. Ren Xuliang(1,2) and D. Zhang Hao(3)
1. Key Laboratory of Intelligent Computing & Information Processing (Xiangtan University). Hunan Province, Xiangtan, China
2. Wind power equipment and power conversion 2011 Collaborative Innovation Center. Hunan Province Xiangtan,China

Key words

Bi-directional DC-DC converter; mode transition; dual carrier modulation; Fractional Order PID.

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