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http://dx.doi.org/10.7471/ikeee.2019.23.4.1140

Analysis of Internal Energy Pulsation in MMC System According to Offset Voltage Injection with PWM Methods  

Kim, Jae-Myeong (Dept. of Electrical Engineering, Kyungpook National University)
Jung, Jae-Jung (Dept. of Electrical Engineering, Kyungpook National University)
Publication Information
Journal of IKEEE / v.23, no.4, 2019 , pp. 1140-1149 More about this Journal
Abstract
In general, there are various pulse width modulation(PWM) methods simply using the offset voltage injection in voltage source converter(VSC). In accordance with the AC side voltage synthesis method with the offset voltage, DC side voltage utilization factor in VSC is changed. Also, this can apply equally to the MMC system. In other words, if the DC side capacity of the high voltage DC(HVDC) transmission system is determined, the maximum reactive power which can be supplied to the AC side can be changed according to the applied output voltage synthesis method with the offset voltage. In this paper, the leg energy pulsation in MMC system according to the AC side output voltage synthesis method with offset voltage which several representative PWM are applied to are mathematically analyzed and compared with each other. Finally, the above results are verified by simulation emulating the 400MVA full-scale MMC system to determine the consistency of the mathematical analysis.
Keywords
internal energy balance: internal energy pulsation; modular multilevel converter(MMC); offset voltage injection; pulse width modulation(PWM);
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1 Qingrui Tu, Zheng Xu, Lie Xu, "Reduced Switching-Frequency Modulation and Circulationg Current Suppression for Modular Multilevel Converters," Power Delivery, IEEE Transactions on, vol.26, no.3, pp.2009-2017, 2011. DOI: 10.1109/TPWRD.2011.2115258   DOI
2 S. Cui, S. Kim, J. J. Jung and S. K. Sul, "A comprehensive cell capacitor energy control strategy of a modular multilevel converter(MMC) without a stiff DC bus voltage source," 2014 IEEE Applied Power Electronics Conference and Exposition- APEC 2014, pp.602-609, 2014. DOI: 10.1109/APEC.2014.6803370
3 Shenghui Cui, "Modeling and Control of Modular Multilevel Voltage Source Converter for HVDC Application with Generalized DC Bus," M. S Thesis, Seoul National University, 2014.
4 Hak-Jun Lee, "A Switching Frequency Reduction Strategy of Modular Multilevel Converter for VSC-HVDC," Ph.D. Thesis, Seoul National University, 2013.
5 D. W. Jung, "Unified Analysis of PWM Method for Three Phase Voltage Source Inverter Using Offset Voltage," Ph.D. Thesis, Seoul National University, 2000.
6 Jae-Jung Jung, "Analysis and Control of Bipolar HVDC Transmission System Based on Asymmetric Mixed MMC Topology," Ph.D. Thesis, Seoul National University, 2017.
7 R. Li, J. E. Fletcher and B. W. Williams, "Influence of third harmonic injection on modular multilevel converter-based high-voltage direct current transmission systems," in IET Generation, Transmission & Distribution, vol.10, no.11, pp. 2764-2770, 2016. DOI: 10.1049/iet-gtd.2015.1470   DOI
8 L. Angquist, et al. "Open-loop control of modular multilevel converters using estimation of stored energy," Industry Applications, IEEE Transactrions on, vol.47 no.6, pp.2516-2524, 2011. DOI: 10.1109/TIA.2011.2168593   DOI
9 J. Jung, H. Lee and S. Sul, "Control Strategy for improved Dynamic Performance of Variable-Speed Drives With Modular Multilevel Converter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol.3, no.2, pp.371-380, 2015. DOI: 10.1109/JESTPE.2014.2323955   DOI
10 A. Antonopoulos, L. Angquist, H-P. Nee, "On dynamics and voltage control of the Modular Multilevel Converter," Power Electronics and Appliactions, 2009. EPE'09. 13th European Conference on. IEEE, 2009.
11 S. Kouro, M. Malinowski, K. Gopakumar, J. Pou, L. G. Franquelo, B. Wu, J. Rodriguez, M. A. Perez, and J. I. Leon, "Recenct advances and industrial applications of multilevel converters," IEEE Trans. Ind. Electron., vol.57, no.8, pp.2553- 2580, 2010. DOI: 10.1109/TIE.2010.2049719   DOI
12 A. Lesnicar and R. Marquardt, "An innovative modular multilevel converter topology suitable for a wide power range," 2003 IEEE Bologna Power Tech Conference Proceedings, vol.3, pp.6, 2003. DOI: 10.1109/PTC.2003.1304403
13 L. G. Franquelo, J. Rodriguez, J. I. Leon, S. Kouro, R. Portillo, and M. A. M. Prats, "The age of multilevel converters arrives," IEEE Ind. Electron. Mag., vol.2, no.2, pp.28-39, 2008. DOI: 10.1109/MIE.2008.923519   DOI