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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2019.5
- 수록면
- 426 - 432 (7page)
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초록· 키워드
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Solid-state transformers (SSTs) enable the interconnection of ac and/or dc networks with medium-frequency galvanic isolation. In comparison to the conventional ac transformer, SSTs can be a relatively expensive solution for transforming voltages, requiring two sequential power conversion stages and a high-voltage transformer. Addressing drawbacks of the SST, in this paper a new modular multi-level dc/dc converter topology is presented which enables power exchange between dc networks at high conversion ratios. The topology consists of a cascade connection of current source and voltage source sub-modules (CSM and VSMs) in a single string. The power inductor of the converter is separated from the high-voltage string of VSM cells by the CSM cell. This enables the CSM cell to shape a string current that is of nearly square-wave shape at medium switching frequencies. The shape of the string current enables simultaneous balancing of the VSMs and near constant power delivery to the lower-voltage dc network.
This paper presents the structure and main operating principles of the topology. Supporting simulation and experimental results are also provided.
This paper presents the structure and main operating principles of the topology. Supporting simulation and experimental results are also provided.
목차
Abstract
I. INTRODUCTION
II. TOPOLOGY DESCRIPTION
III. SIMULATION AND EXPERIMENTAL RESULTS
IV. CONCLUSIONS
REFERENCES
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