Topology and Control Method of a Single-Cell Matrix-Type Solid-State Transformer
发布时间：2021-07-28
点击次数：
影响因子：4.472
DOI码：10.1109/JESTPE.2019.2940514
发表刊物：IEEE Journal of Emerging and Selected Topics in Power Electronics
关键字：Zero voltage switching; Topology; Bridge circuits; Reliability; Voltage control; Density measurement; Power system measurements; Direct ac-ac power conversion; matrix-type SST; series resonant converter (SRC); solid state transformer (SST); zero voltage switching (ZVS)
摘要：Aiming at fulfilling the desirable features of compact structure, high efficiency, high reliability, and multifunctionality for the solid state transformers (SSTs), a single-cell matrix-type SST as well as its control method is proposed as the interface between the medium-voltage (MV) and the low-voltage (LV) levels for direct MV AC to LV AC conversion. To achieve zero voltage switching (ZVS) at both the MV and LV sides, a modulation scheme to construct the special resonant currents during the dead time by actively controlling the MV and LV side gate signals is implemented. Furthermore, the ZVS conditions of the MV and LV side bridges are analyzed, and system parameters are properly designed to ensure full range ZVS operation. A 1-kW SST prototype is developed to verify the functionality and effectiveness of the proposed methods. The experiments show that sinusoidal input and output, bidirectional power flow capability, and ZVS at both sides over wide input voltage and load ranges are achieved with the nominal efficiency of 96.1%. The experimental results match the theoretical analysis and the simulation results well.
合写作者：Zhang, Yichun, Sun, Yao, Zheng, Minghui, Zhang, Guanguan, Tan, Kaiyuan, Feng, Jianghua
第一作者：Wang, Hui
论文类型：期刊论文
通讯作者：Liang, Xiao
论文编号：19950435
学科门类：工学
一级学科：电气工程
卷号：8
期号：3
页面范围：2302-2312
ISSN号：2168-6777
是否译文：否
发表时间：2020-09-01
收录刊物：SCI、EI
附件：
Topology and Control Method of a Single-Cell Matrix-Type Solid-State Transformer.pdf