Isolated Bidirectional Switched-capacitor Flyback Converter

被引：0

作者：

Kim, Hyun-Woo ^{[1
]}

Park, Joung-Hu ^{[1
]}

机构：

[1] Soongsil Univ, Dept Elect Engn, Seoul, South Korea

来源：

2014 INTERNATIONAL ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) | 2014年

基金：

新加坡国家研究基金会;

关键词：

High-efficiency; Bi-directional DC-DC converter; Flyback converter; high step-up; extreme step-down;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, high-efficiency, extremely high step-up and step-down bi-directional DC-DC converter is proposed. The proposed converter consists of a flyback and an isolated switched-capacitor cell to achieve high cost competitiveness for the extreme operation. The output of the flyback converter and that of the isolated switched-capacitor is connected in series to obtain a high voltage step-up. In the reverse direction, then, this converter can be an extremely voltage step-down one. For the design of the controller, the small-signal transfer functions of the converter are derived. Finally, a 100W hardware prototype of the proposed converter is implemented. To improve the efficiency of a PV system employing the proposed converter, a maximum Power Point Tracking (MPPT) method is applied with Perturb and Observe (P&O) method. To demonstrate the operation of the bidirectional converter, the main switch current is used for the power control. All of these controls are implemented with a digital signal processor (DSP).

引用

页码：279 / 284

页数：6

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