Analysis of Modulation and Optimal Design Methodology for Half-Bridge Matrix-Based Dual-Active-Bridge (MB-DAB) AC-DC Converter

被引:31
|
作者
Saha, Jaydeep [1 ]
Gorla, Naga Brahmendra Yadav [2 ]
Subramaniam, Aravinth [1 ]
Panda, Sanjib Kumar [1 ]
机构
[1] Natl Univ Singapore NUS, Dept Elect & Comp Engn, Singapore 117583, Singapore
[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637141, Singapore
基金
新加坡国家研究基金会;
关键词
AC-DC converter; design optimization; dual-active-bridge (DAB); matrix-based (MB); ZVS MODULATION; POWER-DENSITY; VOLTAGE;
D O I
10.1109/JESTPE.2021.3107500
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
Recent research reveals the merits of single-stage half-bridge matrix-based (MB) dual-active-bridge (DAB) converter for modular medium-voltage ac (MVAC) to low-voltage dc (LVDC) conversion. The complete set of modulation modes for this ac-dc converter is yet to be analyzed in the literature. Such holistic investigation is necessary before carrying out a design optimization of the ac-dc converter for given voltage and power specifications. The objective of this article is to present a comprehensive analysis of the half-bridge MB-DAB converter's modulation possibilities and optimal design. The exhaustive sets of zero-current-switching (ZCS) and zero-voltage-switching (ZVS) constrained modulation modes for the half-bridge MB-DAB converter are systematically investigated and the analysis reveals the boundaries of operation and feasible modulation schemes. Suitable simulation results illustrating modulation limits of the ac-dc converter reinforce the theoretical analysis. Additionally, an efficiency (eta)-power density (rho) optimal converter design algorithm is presented, which reveals that an all-SiC half-bridge MB-DAB design with ZVS constrained modulation offers the best eta-rho design. The hardware prototype's experimental results validate the converter's operation.
引用
收藏
页码:881 / 894
页数:14
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