On DC-Side Impedance Frequency Characteristics Analysis and DC Voltage Ripple Prediction under Unbalanced Conditions for MMC-HVDC System Based on Maximum Modulation Index

Yiqi Liu; Qichao Chen; Ningning Li; Bing Xie; Jianze Wang; Yanchao Ji

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저자정보: Yiqi Liu (Harbin Institute of Technology) Qichao Chen (Harbin Institute of Technology) Ningning Li (Harbin Institute of Technology) Bing Xie (Harbin Institute of Technology) Jianze Wang (Harbin Institute of Technology) Yanchao Ji (Harbin Institute of Technology)

저널정보: 전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.16 No.1

발행연도: 2016.1

수록면: 319 - 328 (10page)

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In this study, we first briefly introduce the effect of circulating current control on the modulation signal of a modular multilevel converter (MMC). The maximum modulation index is also theoretically derived. According to the optimal modulation index analysis and the model in the continuous domain, different DC-side output impedance equivalent models of MMC with/without compensating component are derived. The DC-side impedance of MMC inverter station can be regarded as a series xR + yL + zC branch in both cases. The compensating component of the maximum modulation index is also related to the DC equivalent impedance with circulating current control. The frequency characteristic of impedance for MMC, which is observed from its DC side, is analyzed. Finally, this study investigates the prediction of the DC voltage ripple transfer between two-terminal MMC high-voltage direct current systems under unbalanced conditions. The rationality and accuracy of the impedance model are verified through MATLAB/Simulink simulations and experimental results.

#DC voltage ripple #Fault prediction #High-voltage direct current #Impedance prediction #Maximum modulation index #Modular multilevel converter

Abstract
I. INTRODUCTION
II. BASIC CONFIGURATION AND CONTROL METHOD FOR MMC
III. MAXIMUM MODULATION INDEX CALCULATION FOR MMC
IV. DC-SIDE IMPEDANCE FREQUENCY CHARACTERISTICS AND VOLTAGE RIPPLE TRANSFER PREDICTION ANALYSIS
V. SIMULATION RESULTS AND EXPERIMENTAL VERIFICATIONS
VI. CONCLUSION
REFERENCES

참고문헌 (24)

참고문헌 신청

[학술지(정기간행물)] - J. M. Carrasco / 2006 / Power-electronic systems for the grid integration of renewable energy sources : A survey / IEEE Trans. Ind. Electron 53 (4) : 1002 ~ 1016

[학술지(정기간행물)] - K. Shen / 2014 / Elimination of harmonics in a modular multilevel converter using particle swarm optimization-based staircase modulation strategy / IEEE Trans. Ind. Electron. 61 (10) : 5311 ~ 5322

[학술지(정기간행물)] - P. M. Meshram / 2015 / A simplified nearest level control(NLC)voltage balancing method for modular multilevel converter(MMC) / IEEE Trans. Power Electron 30 (1) : 450 ~ 462

[학술지(정기간행물)] - M. Glinka / 2005 / A new ac/dc multilevel converter family / IEEE Trans. Ind. Electron. 52 (3) : 662 ~ 669

[학술지(정기간행물)] - Q. R. Tu / 2011 / Impact of sampling frequency on harmonic distortion for modular multilevel converter / IEEE Trans. Power Del 26 (1) : 298 ~ 306

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이 논문의 저자 정보

Yiqi Liu

소속기관 Northeast Forestry University

주요연구분야 공학 > 전기전자공학 > 전기공학

논문수 3 이용수 35

Qichao Chen