Multifrequency approximation and average modelling of an isolated bidirectional dc-dc converter for dc microgrids

被引：16

作者：

Huang, Jun ^{[1
]}

Wang, Yue ^{[1
]}

Li, Zhuoqiang ^{[1
]}

Lei, Wanjun ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

IET POWER ELECTRONICS | 2016年 / 9卷 / 06期

关键词：

PHASE-SHIFT CONTROL; POWER; EFFICIENCY; STRATEGY; GENERATION; OPERATION; SYSTEMS; DESIGN; GAIN;

D O I：

10.1049/iet-pel.2015.0417

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：

This study presents a generalised analysis of isolated bidirectional dual active bridge (DAB) dc-dc converter with triple-phase-shift (TPS) control. The multifrequency approximation is used to analyse performance characteristics of DAB, and a novel numerical solver is developed to determine the optimised modulation scheme based on TPS control. Specially, the proposed solver can be considered as a unified solver for determining the optimised operation of DAB with required transmission power and voltage conversion ratio. The multifrequency average model of DAB is then described in this study. A universal control-to-output-voltage transfer function is derived for DAB with any modulation scheme, and the closed-loop operation is discussed based on the proposed average model. Finally, a laboratory prototype is implemented and experimental results verify the theoretical analysis.

引用

页码：1120 / 1131

页数：12

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