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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2019.5
- 수록면
- 412 - 419 (8page)
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초록· 키워드
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In consequence of high semiconductor losses, gridconnected medium voltage power converters are typically operated at switching frequencies of several hundred Hertz per switch position. Therefore, conventional converter systems require bulky and expensive LCL-filters in order to meet the harmonic limits given by the grid code. It is only possible to reduce the LCL-filter costs by semiconductor current derating and operation at increased switching frequencies, leading to a reduced utilization and efficiency of the converter system. To overcome these disadvantages of conventional converter systems, the presented hybrid converter uses a parallel voltagesource active output filter and thus allows a significant reduction of the passive component demand. An excellent harmonic performance is achieved for the operation with small passive filter components, revealing the potential for increasing the power density and efficiency of high power medium voltage converters. As a result, significant reductions of the filter losses and passive components as well as an increased utilization are achieved compared to a reference LCL-filter based converter system.
목차
Abstract
I. INTRODUCTION
II. CONVERTER TOPOLOGY AND CONTROL
III. SIMULATION RESULTS
IV. CONVERTER CHARACTERISTICS
V. CONCLUSION
REFERENCES
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