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

The Korean Institute of Power Electronics (전력전자학회)
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A Simplified Voltage Balancing Method Applied to Multi-level H-bridge Converter for Solid State Transformer

반도체 변압기용 멀티레벨 H-bridge 컨버터에 적용한 간단한 전압 밸런싱 방법

  • Jeong, Dong-Keun (Power Conversion and Control Research Center, HVDC Research Division, KERI) ;
  • Kim, Ho-Sung (Power Conversion and Control Research Center, HVDC Research Division, KERI) ;
  • Baek, Ju-Won (Power Conversion and Control Research Center, HVDC Research Division, KERI) ;
  • Cho, Jin-Tae (Smart Power Distribution Lab. Power Distribution ICT Group. KEPCO) ;
  • Kim, Hee-Je (Dept. of Electrical Eng., Pusan Nat'l University)
  • Received : 2017.02.12
  • Accepted : 2017.03.08
  • Published : 2017.04.20
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Abstract

A simple and practical voltage balance method for a solid-state transformer (SST) is proposed to reduce the voltage difference of cascaded H-bridge converters. The tolerance device components in SST cause the imbalance problem of DC-link voltage in the H-bridge converter. The Max/Min algorithms of voltage balance controller are merged in the controller of an AC/DC rectifier to reduce the voltage difference. The DC-link voltage through each H-bridge converter can be balanced with the proposed control methods. The design and performance of the proposed SST are verified by experimental results using a 30 kW prototype.

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References

  1. A. Q. Huang, M. L. Crow, G. T. Heydt, J. P. Zheng, and S. J. Dale, "The future renewable electric energy delivery and management (FREEDM) system: The energy internet," in Proc. IEEE, Vol. 99, No. 1, pp. 133-148, Jan. 2011. https://doi.org/10.1109/JPROC.2010.2081330
  2. M. Kang, P. Enjeti, and I. Pitel, "Analysis and design of electronic transformers for electric power distribution system," IEEE Trans. on Power Electronics, Vol. 14, No. 6, pp. 1133-1141, Nov. 1999. https://doi.org/10.1109/63.803407
  3. J. Shi, W. Gou, H. Yuan, T. Zhao, and A. Q. Huang, "Research on voltage and power balance control for cascaded modular solid-state transformer," IEEE Trans. on Power Electronics, Vol. 26, No. 4, pp. 1154-1166, Apr. 2011. https://doi.org/10.1109/TPEL.2011.2106803
  4. J. S. Lai, F. Z. Peng, "Multilevel converters-a new breed of power converters," IEEE Trans. on Industry Applications, Vol. 32, No. 3, pp. 509-517, May/Jun. 1996. https://doi.org/10.1109/28.502161
  5. J. Rodriguez, J. S. Lai, and F. Z. Peng, "Multilevel inverters: a survey of topologies, controls, and applications," IEEE Trans. on Industrial Electronics, Vol. 49, No. 4, pp. 724-738, Aug. 2002. https://doi.org/10.1109/TIE.2002.801052
  6. S. Falcones, X. Mao, and R. Ayyanar, "Topology comparison for solid state transformer implementation," in Proc. IEEE Power Energy Soc. Conf., pp. 1-8, 2010.
  7. X. Liu, H. Li, and Z. Wang, "A start-up scheme for three-stage solid-state transformer with minimized transformer current response," IEEE Trans. on Power Electronics, Vol. 27, No. 12, pp. 4832-4836, Dec. 2012. https://doi.org/10.1109/TPEL.2012.2200047
  8. T. Zhao, G. Wang, S. Bhattacharya, and A. Q. Huang, "Voltage and power balance control for a cascaded H-bridge converter-based solid-state transformer," IEEE Trans. on Power Electronics, Vol. 28, No. 4, pp. 1523-1532, Apr. 2013. https://doi.org/10.1109/TPEL.2012.2216549
  9. J. A. Barrena, L. Marroyo, M. A. R. Videl, and J. R. T. Apraiz, "Individual voltage balancing strategy for PWM cascaded h-bridge converter-based STATCOM," IEEE Trans. on Industrial Electronics, Vol. 55, No. 1, pp. 21-29, Jan. 2008. https://doi.org/10.1109/TIE.2007.906127
  10. X. She, A. Q. Hung, and T. F. Zhao, "Coupling effect reduction of a voltage-balancing controller in single-phase cascaded Multilevel converters," IEEE Trans. on Power Electronics, Vol. 27, No. 8, pp. 3530-3543, Aug. 2012. https://doi.org/10.1109/TPEL.2012.2186615