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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.9
- 수록면
- 1,752 - 1,762 (11page)
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초록· 키워드
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To achieve higher reliability in the modular multilevel converters (MMC) for HVDC transmission systems, the internal condition of the DC capacitors of the submodules (SM) needs to be monitored regularly. For an online estimation of the SM capacitance, a controlled AC current with double the fundamental frequency is injected into the circulating current loop of the MMC, which results in current and voltage ripples in the SM capacitors. The capacitor currents are calculated from the arm currents and their switching states. By processing these AC voltage and current components with digital filters, their capacitances are estimated by a recursive least square (RLS) algorithm. The validity of the proposed scheme has been verified by simulation results for a 300-㎿, 300-㎸ HVDC system. In addition, its feasibility has been verified by experimental results obtained with a reduced-scale prototype. It has been shown that the estimation errors for both the simulation and experimental tests are 1.32% at maximum.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. MODELING OF MODULAR MULTILEVEL CONVERTERS IN HVDC TRANSMISSION SYSTEMS
Ⅲ. CONTROL OF MODULAR MULTILEVEL CONVERTERS
Ⅳ. CAPACITANCE ESTIMATION OF THE SUBMODULE CAPACITORS
Ⅴ. SIMULATION RESULTS
Ⅵ. EXPERIMENTAL RESULTS
Ⅶ. CONCLUSIONS
REFERENCES
참고문헌 (30)
참고문헌 신청
[학술지(정기간행물)] - S. Debnath / 2015 / Operation, control, and applications of the modular multilevel converter : a review / IEEE Trans. Power Electron 30 (1) : 37 ~ 53
[학술지(정기간행물)] - A. Antonopoulos / 2015 / Optimal selection of the average capacitor voltage for variable-speed drives with modular multilevel converters / IEEE Trans. Power Electron 30 (1) : 227 ~ 234
[학술지(정기간행물)] - M. Hagiwara / 2011 / Control and analysis of the modular multilevel cascade converter based on double-star chopper-cells(MMCC-DSCC) / IEEE Trans. Power Electron 26 (6) : 1649 ~ 1658
[학술지(정기간행물)] - M. Zhang / 2014 / Circulating harmonic current elimination of a CPS-PWM-based modular multilevel converter with a plug-in repetitive controller / IEEE Trans. Power Electron 29 (4) : 2083 ~ 2097
[학술지(정기간행물)] - Jianguo Lyu / 2015 / A New DPWM Method to Suppress the Low Frequency Oscillation of the Neutral-Point Voltage for NPC Three-Level Inverters / Journal of Power Electronics 15 (5) : 1207 ~ 1216
[학술지(정기간행물)] - A. Antonopoulos / 2015 / Optimal selection of the average capacitor voltage for variable-speed drives with modular multilevel converters / IEEE Trans. Power Electron 30 (1) : 227 ~ 234
[학술지(정기간행물)] - M. Hagiwara / 2011 / Control and analysis of the modular multilevel cascade converter based on double-star chopper-cells(MMCC-DSCC) / IEEE Trans. Power Electron 26 (6) : 1649 ~ 1658
[학술지(정기간행물)] - M. Zhang / 2014 / Circulating harmonic current elimination of a CPS-PWM-based modular multilevel converter with a plug-in repetitive controller / IEEE Trans. Power Electron 29 (4) : 2083 ~ 2097
[학술지(정기간행물)] - Jianguo Lyu / 2015 / A New DPWM Method to Suppress the Low Frequency Oscillation of the Neutral-Point Voltage for NPC Three-Level Inverters / Journal of Power Electronics 15 (5) : 1207 ~ 1216
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UCI(KEPA) : I410-ECN-0101-2017-560-001109813