A Modular SiC High-Frequency Solid-State Transformer for Medium-Voltage Applications: Design, Implementation, and Testing
| Autor: | Qin Chen, Dong Dong, Mohammed Agamy, Jovan Bebic, Gary Mandrusiak |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry 020208 electrical & electronic engineering 05 social sciences Electrical engineering Energy Engineering and Power Technology 02 engineering and technology Modular design Converters law.invention chemistry.chemical_compound chemistry law Power electronics MOSFET 0202 electrical engineering electronic engineering information engineering Silicon carbide 0501 psychology and cognitive sciences Electrical and Electronic Engineering business Transformer Galvanic isolation 050107 human factors Voltage |
| Zdroj: | IEEE Journal of Emerging and Selected Topics in Power Electronics. 7:768-778 |
| ISSN: | 2168-6785 2168-6777 |
| DOI: | 10.1109/jestpe.2019.2896046 |
| Popis: | The advancements in wide-bandgap devices are enabling applications of power electronic converters coupled directly with medium-voltage (MV) grids that incorporate galvanic isolation within the converter using high-frequency solid-state transformers (SSTs). This paper presents analysis, design, and the characterization results of a 50-kVA modular soft-switched ac–ac SST using silicon carbide (SiC) MOSFET for MV (>6 kV ac) applications. The SST is comprised of two hard-switched ac-line interface bridges and a resonant dc–dc stage switched at approximately 180 kHz. To minimize the cost of switching elements per ampere and maximize the design flexibility, the design uses multiple discrete SiC devices of, readily available, 1700-V ratings. This paper covers the analysis of soft-switching operation, control architecture, converter design, and system-level integration. |
| Databáze: | OpenAIRE |
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