Efficiency Characterization and Optimization of Isolated Bidirectional DC–DC Converter Based on Dual-Phase-Shift Control for DC Distribution Application
Efficiency Characterization and Optimization of Isolated Bidirectional DC–DC Converter Based on Dual-Phase-Shift Control for DC Distribution Application
复制标题
DOI：
10.1109/tpel.2012.2210563
复制
发表时间：
2013-04
影响因子：
6.7
通讯作者：
Biao Zhao;Q. Song;Wenhua Liu
中科院分区：
文献类型：
--
作者：
Biao Zhao;Q. Song;Wenhua Liu
与传统的单相移相控制相比，双相移相控制可以大大提高隔离型双向dc-dc变换器（IBDC）的性能。本文详细分析了DPS控制下IBDC的开关特性，建立了功率损耗模型来预测各功率元件的耗散功率，并分析了整个范围内的效率优化特性。在此基础上，提出了一种效率优化的切换策略，设计并实现了相应的控制方案。最后，通过实验样机验证了所提切换策略的可行性和理论分析的正确性。实验结果表明，该方法能最大限度地降低功率损耗，提高系统效率，尤其适用于高电压转换率的工作条件。
Compared to the traditional single-phase-shift control, dual-phase-shift (DPS) control can greatly improve the performance of the isolated bidirectional dc–dc converter (IBDC). This paper gives a detailed switching characteristic analysis of IBDC under DPS control, establishes a power loss model to predict the dissipated power for each power component, and analyzes the efficiency-optimized characteristic across the whole range. On this basis, an efficiency-optimized switching strategy is proposed and the corresponding control scheme is designed and implemented. At last, an experimental prototype was implemented to verify the feasibility of the proposed switching strategy and correctness of the theoretical analysis. The experimental results show that the proposed method can minimize the power loss and maximize the system efficiency, and these performances are particularly effective for operation conditions with high voltage conversion ratio.