Browse > Article
http://dx.doi.org/10.5370/KIEE.2014.63.8.1046

Redundancy Module Operation Analysis of MMC using Scaled Hardware Model  

Yoo, Seung-Hwan (Dept. of Electrical Engineering, Myongji University)
Shin, Eun-Suk (Dept. of Electrical Engineering, Myongji University)
Choi, Jong-Yun (Hyosung Corporation and Dept. of Electrical Engineering, Myongji University)
Han, Byung-Moon (Dept. of Electrical Engineering, Myongji University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.63, no.8, 2014 , pp. 1046-1054 More about this Journal
Abstract
In this paper, a hardware prototype for the 10kVA 11-level MMC was built and various experimental works were conducted to verify the operation algorithms of MMC. The hardware prototype was designed using computer simulation with PSCAD/EMTDC software. After manufactured in the lab, the hardware prototype was tested to verify the modulation algorithms to form the output voltage, the balancing algorithm to equalize the sub-module capacitor voltage, and the redundancy operation algorithm to improve the system reliability. The developed hardware prototype can be utilized for analyzing the basic operation and performance improvement of MMC according to the modulation and redundancy operation scheme. It also can be utilize to analyze the basic operational characteristics of HVDC system based on MMC.
Keywords
MMC (Modular Multi-level Converter); SM (sub-module); DC voltage balancing; Redundancy module; Harmonic reduction; EAM(Equal Area Modulation); SHE (Selective Harmonic Elimination); NLC (Nearest Level Control);
Citations & Related Records
연도 인용수 순위
  • Reference
1 B. Han, S. Baek, H. Kim, and G. Karady, "Dynamic Characteristic Analysis of SSSC based on Multi-bridge Inverter", IEEE Trans. Power Delivery, Vol. 17, No. 17, No. 2, pp.623-629, 2002   DOI   ScienceOn
2 U. Gnanarathna, A. Gole, and R. Jayasinghe, "Efficient Modeling of Modular Multilevel HVDC Converter on Electromagnetic Transient Simulation Programs", IEEE Trans. on Power Delivery, Vol.26, No. 1, January 2011.
3 Q. Song, W. Liu, X. Li, H. Rao, S. Xu, and L. Li, "A Steady-State Analysis Method for a Modular Multilevel Converter", IEEE Trns. on Power Electronics, Vol. 28, No.8, August 2013.
4 J. Xu, C. Zhao, W. liu, and C. Guo, "Accelerated Model of Modular Multilevel Converters in PSCAD/EMTDC", IEEE Trans. on Power Delivery, Vol. 28, No. 1, January 2013.
5 Q. Tu and Z. Xu, "Impact of Sampling Frequency on Harmonic Distortion for Modular Multilevel Converter", IEEE Trans. on Power Delivery, Vol.26, No. 1, January 2011.
6 G. Ding, M. Ding and G.Tang "An Innovative Modular Multilevel Converter Topology and Modulation Control Scheme for the first VSC-HVDC project in China", in Proc. 16th Power Systems Computation Conference (PSCC), 14-18 July 2008, Glasgow, United Kingdom.
7 S. Rohner, S. Bernet, M. Hiller, and R. Sommer, "Modulation, Losses, and Semiconductor Requirements of Modular Multilevel Converters", IEEE Trans. on Industrial Electronics, Vol.57,No. 8, August 2010.
8 Q. Tu, Z. Xu and L. Xu "Reduced switching-frequency modulation and circulating current suppression for modular multilevel converters", IEEE Trans. Power Delivery, Vol. 26, No. 3, pp.2009-2017 2011.   DOI   ScienceOn
9 K. Ilves, A. Antonopoulos, S. Norrga, and H-P. Nee, "A New Modulation Method for the Modular Multilevel Converter Allowing Fundamental Switching Frequency", IEEE Trans. on Power Electronics, vol. 27, No.8, August 2012.
10 Q. Tu, Z. Xu, Y. Chang, and L. Guan, "Suppression DC Voltage Ripples of MMC-HVDC Under Unbalanced Grid Conditions", IEEE Trans. on Power Delivery, Vol.27, No. 3, July 2012.
11 U. Axelsson, A. Holm, C. Liljegren, M. Aberg, K. Eriksson, O. Tollerz "The Gotland HVDC Light project-experiences from trial and commercial operation", Eletricity Distribution, 2001. Part1:Contributions. CIRED. 16th International Conference and Exhibition on (IEE Conf. Publ No. 482).
12 R. Marquardt "Modular multilevel converter topologies with DC-short circuit current limitation", Proc. 8th Int. Power Electron. ECCE Asia Conf., pp.1425-1431 2011.
13 R. Marquardt "Modular multilevel converter: An universal concept for HVDC Networks and extended DC-Bus-applications", Proc. Int. Power Electron. Conf., 2010, Jun. 2010.