Analysis of a New Single-Stage AC/AC Converter for Solid-State Transformer

被引：1

作者：

Khan, Wajahat ^{[1
]}

Dar, Jahangeer Ahmad ^{[1
]}

Parihar, Karthik Singh ^{[1
]}

Pathak, Mukesh Kumar ^{[1
]}

机构：

[1] IIT Roorkee, Dept Elect Engn, Roorkee 247667, India

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2024年 / 60卷 / 02期

关键词：

Topology; Bridge circuits; Transformers; Switches; Zero voltage switching; Power system measurements; Matrix converters; Circulating current; reverse power flow; single-stage AC/AC topology; solid-state transformer (SST); zero-voltage switching (ZVS); POWER ELECTRONIC TRANSFORMER; SOURCE-BASED COMMUTATION; VOLTAGE; DESIGN; IMPLEMENTATION; DRIVE;

D O I：

10.1109/TIA.2023.3343312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work provides the analysis and design of a new single-stage high-frequency isolated AC/AC converter based on the resonant LLC structure. The proposed topology uses a semi-active bridge on the secondary side to eliminate the reverse power flow (RPF) and the secondary circulating current while maintaining power flow controllability using secondary phase-shift control. A detailed gain analysis is presented showing the capability of the converter to operate in buck and boost operating modes while maintaining soft-switching operation over a wide range. The fundamental harmonic approximation (FHA) method is applied for performing the steady-state analysis. A thorough analysis of the operating intervals of the converter is presented and the soft-switching constraints are derived. The modulation strategy of the proposed converter is also discussed in detail. Analytical expressions are derived for the power transferred and the peak resonant current. An experimental prototype of 1 kW rated power is developed, and the results are presented to substantiate the analysis.

引用

页码：3359 / 3372

页数：14

共 41 条

[1] A Single-Stage Solid-State Transformer for PWM AC Drive With Source-Based Commutation of Leakage Energy [J].