The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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THD Analysis of Output Voltage According to PWM Carriers in Single-Delta Bridge Cell MMC

Single-Delta Bridge Cell MMC의 전압합성을 위한 PWM 반송파 형태에 따른 출력전압의 THD 분석

  • Jae-Myeong, Kim (School of Electronic and Electrical Engineering, IT College, Kyungpook National University) ;
  • Jae-Jung, Jung (School of Electronic and Electrical Engineering, IT College, Kyungpook National University)
  • Received : 2022.07.25
  • Accepted : 2022.10.11
  • Published : 2022.12.20
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Abstract

The modular multilevel converter (MMC) has been widely applied to various industrial areas because of its various advantages and structural characteristics. Therefore, many methods for synthesizing the output voltage of MMC have been studied. Among these methods, phase-shifted pulse width modulation (PSPWM) is frequently used in MMC systems because it has diverse merits, such as excellent output qualities even with a small number of cells and uniform power distribution among cells. In this study, the total harmonic distortion (THD) of the output voltage is analyzed in accordance with the number of cells in one arm of a single-delta bridge cell MMC in order to compare PSPWM methods in terms of the THD of the output voltage. The physical characteristics of the triangle and sawtooth carrier waves used for the PSPWM and the mathematical modeling of output voltage are introduced. Then, the obtained results are verified through real-time simulation of a 1 MW single-delta bridge cell MMC system.

Keywords

Acknowledgement

본 연구는 2021년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다. (No. 20210501010020) 본 연구는 한국전력공사의 지원을 받아 수행한 연구 과제입니다. (No. R20TA18)

References

  1. J. Rodriguez, J.S. Lai, F.Z. Peng, "A survey of topologies, controls, and applications," IEEE Trans. Ind. Electron, Vol. 49, No. 4, pp. 724-738, 2002.  https://doi.org/10.1109/TIE.2002.801052
  2. F.Z. Peng, "A multilevel voltage-source inverter with separate DC sources for static var generation," IEEE Trans. Ind. Appl, Vol. 32, No. 5, pp. 1130-1138, 1996.  https://doi.org/10.1109/28.536875
  3. H.M. Pirouz, M.T. Bina, "Modular multilevel converter based STATCOM topology suitable for medium-voltage unbalanced systems," Journal of Power Electronics, Vol. 10, No. 5, pp. 572-578, 2010.  https://doi.org/10.6113/JPE.2010.10.5.572
  4. S. Allebrod, R. Hamerski, and R. Marquardt, "New transformerless, scalable modular multilevel converters for HVDC-transmission," in Proc. IEEE Power Electron. Spec. Conf., pp. 174-179, 2008. 
  5. B. Gemmell, J.Dorn, D. Retzmann, and D. Soerangr, "Prospects of multilevel VSC technologies for power transmission," in Proc. IEEE/PES Transmiss. Distrib. Conf. Expo., pp. 1-16, 2008. 
  6. A. Lesnicar and R. Marquardt, "An innovative modular multilevel converter topology suitable for a wide power range," in Proc. IEEE PowerTech Conf., Vol. 3, pp. 1-6, 2003. 
  7. B. Li, R. Yang, D. Xu, G. Wang, W. Wang, and D. Xu, "Analysis of the phase-shifted carrier modulation for modular multilevel converters," IEEE Trans. Power Electron., Vol. 30, No. 1, pp. 297-310, 2015.  https://doi.org/10.1109/TPEL.2014.2299802
  8. Q. Cheng, C. Wang, J. Wang, "Analysis on displacement angle of phase-shifted carrier PWM for modular multilevel converter," Energies, Vol. 13, No. 24, pp. 6743, 2020. 
  9. M. Hagiwara, and H. Akagi, "Control and experiment of pulsewidth-modulated modular multilevel converters," IEEE Trans. Power Electron., Vol. 24, No. 3, pp. 571-579, 2009.  https://doi.org/10.1109/TPEL.2009.2012528
  10. M. Hagiwara, H. Akagi, "Control and analysis of the modular multilevel cascade converter based on double-star chopper-cells," IEEE Trans. Power Electron., Vol. 26, No. 6, pp. 1649-1658, 2011.  https://doi.org/10.1109/TPEL.2010.2089065
  11. B. P. McGrath, C. A. Teixeira, D. G. Holmes, "Optimized phase disposition(PD) modulation of a modular multilevel converter." IEEE Trans. Ind. Appl, Vol. 53, No. 5, pp. 4624-4633, 2017.  https://doi.org/10.1109/TIA.2017.2697953
  12. L. Wang, Y. Shi, M. Bosworth, D. Soto, M. Steurer, "Modular multilevel converter switching frequency harmonics analysis and suppression through cell voltage control," IEEE Open Journal of Power Electronics, Vol. 1, pp. 149-160, 2020.  https://doi.org/10.1109/ojpel.2020.2997211
  13. G. S. Konstantinou, V. G. Agelidis, "Performance evaluation of half-bridge cascaded multilevel converters operated with multicarrier sinusoidal PWM techniques," in Proc. 4th Conf. Ind. Electron. Appl., pp. 3399-3404, 2009. 
  14. F. Sasongko, K. Sekiguchi, K. Oguma, M. Hagiwara, H. Akagi, "Theory and experiment on an optimal carrier frequency of a modular multilevel cascade converter with phase-shifted PWM," IEEE Trans. Power Electron., Vol. 31, No. 5, pp. 3456-3471, 2016.  https://doi.org/10.1109/TPEL.2015.2464694
  15. H. d. T. Mouton, B. McGrath, D. G. Holmes, and R. H. Wilkinson, "One-dimensional spectral analysis of complex PWM waveforms using superposition," IEEE Trans. Power Electron., Vol. 29, No. 12, pp. 6762-6778, 2014.  https://doi.org/10.1109/tpel.2014.2304677
  16. H. d. T. Mouton, B. Putzeys, "Understanding the PWM nonlinearity: single-sided modulation," IEEE Trans. Power Electron., Vol. 27, No. 4, pp. 2116-2128, 2012. https://doi.org/10.1109/TPEL.2011.2169283