A wide output range reconfigurable structure dc-dc converter

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society Pub Date : 2010-12-23 DOI:10.1109/IECON.2010.5675007

Pengju Sun, Luowei Zhou, K. Smedley

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引用次数: 2

Abstract

The paper presents a new wide output range reconfigurable structure (WOR-RS) dc-dc converter, which is an extension of the full bridge isolated dc-dc converter with two output channels by adding an active switch and two diodes. The proposed WOR-RS is able to smoothly reconfigure the two output channels in parallel or series to realize wide output range. With this approach, the output voltage is shared equally in the series operating mode and so is the output current in the parallel operating mode. Therefore, the power rating of devices is significantly reduced compared to traditional isolated full bridge converter and the output rectifiers and filters can distribute power losses and thermal stresses. Operating principle, control strategy, modeling, and stability analysis are illustrated in the paper. An experimental prototype of a 200W DSP-based WOR-RS full-bridge dc-dc converter was built. The experimental results show the steady-state performance and fast dynamic response in the whole output voltage range, and verify the validity and applicability of this converter.

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一种宽输出范围可重构结构的dc-dc变换器

本文提出了一种新的宽输出范围可重构结构(WOR-RS) dc-dc变换器，该变换器是对双输出通道全桥隔离dc-dc变换器的扩展，增加了一个有源开关和两个二极管。所提出的WOR-RS能够平滑地将两个输出通道重新配置为并联或串联，以实现宽输出范围。采用这种方法，输出电压在串联工作模式下均匀共享，输出电流在并联工作模式下均匀共享。因此，与传统的隔离式全桥变换器相比，器件的额定功率大大降低，并且输出整流器和滤波器可以分配功率损耗和热应力。文中阐述了系统的工作原理、控制策略、建模和稳定性分析。建立了一种基于200W dsp的WOR-RS全桥dc-dc变换器的实验样机。实验结果表明，该变换器在整个输出电压范围内具有良好的稳态性能和快速的动态响应，验证了该变换器的有效性和适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society

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