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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.3
- 수록면
- 346 - 357 (12page)
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초록· 키워드
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The Modular Multilevel Converter (MMC) is particularly attractive for medium and high power applications such as High-Voltage Direct Current (HVDC) systems. In order to reach a high voltage, the number of cascaded submodules (SMs) is generally very large. Thus, in the applications with hundreds or even thousands of SMs such as MMC-HVDCs, the sorting algorithm of the conventional voltage balancing strategy is extremely slow. This complicates the controller design and increases the hardware cost tremendously. This paper presents a Two-Way Merge Sort (TWMS) strategy based on the prediction of the capacitor voltages under ideal conditions. It also proposes an innovative Insertion Sort Correction for the TWMS (ISC-TWMS) to solve issues in practical engineering under non-ideal conditions. The proposed sorting methods are combined with the features of the MMC-HVDC control strategy, which significantly accelerates the sorting process and reduces the implementation efforts. In comparison with the commonly used quicksort algorithm, it saves at least two-thirds of the sorting execution time in one arm with 100 SMs, and saves more with a higher number of SMs. A 501-level MMC-HVDC simulation model in PSCAD/EMTDC has been built to verify the validity of the proposed strategies. The fast speed and high efficiency of the algorithms are demonstrated by experiments with a DSP controller (TMS320F28335).
목차
Abstract
I. INTRODUCTION
II. PROPOSED TWMS STRATEGY UNDER IDEAL CONDITIONS
III. PROPOSED ISC-TWMS STRATEGY UNDER NON-IDEAL CONDITIONS
IV. SIMULATION AND EXPERIMENTAL RESULTS
V. CONCLUSIONS
REFERENCES
참고문헌 (23)
참고문헌 신청
[학술대회논문] - A. Lesnicar / 2003 / An innovative modular ltilevel converter topology suitable for a wide power range / Proc. IEEE Bologna Power Tech Conference : 1 ~ 6
[학술지(정기간행물)] - M. Saeedifard / 2010 / Dynamic performance of a modular multilevel back-to-back HVDC system / IEEE Trans. Power Deliv. 25 (4) : 2903 ~ 2912
[학술지(정기간행물)] - J. Peralta / 2012 / Detailed and averaged models for a 401-level MMC–HVDC system / IEEE Trans. Power Deliv. 27 (3) : 1501 ~ 1508
[학술지(정기간행물)] - P. Liu / 2015 / Grouping-Sorting-Optimized Model Predictive Control for Modular Multilevel Converter with Reduced Computational Load / IEEE Trans. Power Electron. 31 (3) : 1896 ~ 1907
[학술대회논문] - Q. Tu / 2010 / Parameter design principle of the arm inductor in modular multilevel converter based HVDC / Conference on Power System Technology : 1 ~ 6
[학술지(정기간행물)] - M. Saeedifard / 2010 / Dynamic performance of a modular multilevel back-to-back HVDC system / IEEE Trans. Power Deliv. 25 (4) : 2903 ~ 2912
[학술지(정기간행물)] - J. Peralta / 2012 / Detailed and averaged models for a 401-level MMC–HVDC system / IEEE Trans. Power Deliv. 27 (3) : 1501 ~ 1508
[학술지(정기간행물)] - P. Liu / 2015 / Grouping-Sorting-Optimized Model Predictive Control for Modular Multilevel Converter with Reduced Computational Load / IEEE Trans. Power Electron. 31 (3) : 1896 ~ 1907
[학술대회논문] - Q. Tu / 2010 / Parameter design principle of the arm inductor in modular multilevel converter based HVDC / Conference on Power System Technology : 1 ~ 6
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UCI(KEPA) : I410-ECN-0101-2017-560-002321197