Virtual Group Control Algorithm for Modular Multilevel Converter

Year 2019, Volume: 3 Issue: 1, 45 - 51, 29.03.2019

Chan-ki Kim Soo-yeon Sim , Chang-hwan Park Jang-mok Kim

Abstract

This paper deals with the group control method of MMC (Modular Multilevel Converter) HVDC system. The proposed scheme increases the number of SMs (Submodules) of MMC HVDC system to more than 500 (2GW class) without changing the sampling time. This method is called Cluster Stream Buffer (CSB) method, and the total SMs are divided into several clusters, and a cluster is composed of 32 SMs. It is easy for the Cluster Stream Buffer method to expand HVDC system to several GW Class and it is easy to keeping the system performances. Consequently, this method was validated using MATAB/Simulink program.

Keywords

MMC HVDC(Modular Multilevel Converter HVDC), CSB(Cluster Stream Buffer;Level Selection Method), NLC(Nearsst Level Control), SM(Submodule)

References

• R. Marquardt, “Stromrichterschaltungen Mit Verteilten Energiespeichern,” German Patent DE 10103031A1, Jan. 24, 2001.
• A. Lesnicar and R. Marquardt, “A new modular voltage source inverter topology,” presented at the EPE, Toulouse, France, Sep. 2003.
• A. Lesnicar and R. Marquardt, “An innovative modular multilevel converter topology suitable for a wide power range,” in Proc. IEEE Power Tech Conf., Bologna, Italy, 2003, p. 6.J. Dorn, H. Huang, and D. Retzmann, “A new multilevel voltage sourced converter topology for HVDC applications,” in CIGRE Session, Paris, France, 2008
• G. S. Konstantinou and V. G. Agelidis, “Performance evaluation of half-bridge cascaded multilevel converters operated with multicarrier sinusoidal PWM techniques,” in Proc. IEEE Industrial Electronics and Applications Conf., 2009, pp. 3399–3404.
• Chan-Ki Kim, Chang-Hwan Park, Jang-Mok Kim, “Level Selection Algorithm with fixed sampling frequency for modular multilevel converter”, IEEE-PEMC, Budapest, Hungary, 2018.
• S. Sirisukprasert, L. Jih-Sheng, and L. Tian-Hua, “Optimum harmonic reduction with a wide range of modulation indexes for multilevel converters,” IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 875–881, Aug. 2002.
• D. Zhong, L. M. Tolbert, J. N. Chiasson, and B. Ozpineci, “Reduced switching-frequency active harmonic elimination for multilevel converters,” IEEE Trans. Ind. Electron., vol. 55, no. 4, pp. 1761–1770, Apr. 2008.
• D. Zhong, L. M. Tolbert, and J. N. Chiasson, “Active harmonic elimination for multilevel converters,” IEEE Trans. Power Electron., vol. 21, no. 2, pp. 459–469, Mar. 2006.
• Chan-Ki Kim, Chang-Hwan Park, Jang-Mok Kim, “고정 샘플링 주파수에서의 모듈형 멀티레벨 컨버터레벨 선택 알고리즘” TKPE, vol. 23, no. 6, pp415-423, Dec. 2018