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

The Korean Institute of Power Electronics (전력전자학회)
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3-Level Boost Converter Having Lower Inductor for Interleaving Operation

인터리빙 동작을 위한 하단 인덕터를 갖는 3-Level Boost Converter

  • Lee, Kang-Mun (Dept. of Electronic Engineering, Korea National University of Transportation) ;
  • Baek, Seung-Woo (Dept. of Electronic Engineering, Korea National University of Transportation) ;
  • Kim, Hag-Wone (Electronic Eng, Korea National University of Transportation) ;
  • Cho, Kwan-Yuhl (Dept. of Electronic Engineering, Korea National University of Transportation) ;
  • Kang, Jeong-Won (Dept. of Transportation System Engineering, Korea National University of Transportation)
  • Received : 2020.11.16
  • Accepted : 2020.12.28
  • Published : 2021.04.20
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Abstract

Large-scale power converters consist of series or parallel module combinations. In these modular converter systems, the interleaving technique can be applied to improve capacitor reliability by reducing the ripple of the I/O current in which each module operates as a phase difference. However, when applying the interleaving technique for conventional three-level boost converters, the short-circuit period of the converter can be an obstacle. Such problem is caused by the absence of a low-level inductor of the conventional three-level boost converter. To solve this problem, a three-level boost converter with a low-level inductor is proposed and analyzed to enable interleaved operation. In the proposed circuit, the current ripple of the output capacitor depends on the neutral point connections between the modules. In this study, the ripple current is analyzed by the neutral point connections of the three-level boost converter that has a low-level inductor, and the effectiveness of the proposed circuit is proven by simulation and experiment.

Keywords

References

  1. G. Yao, L. Hu, Y. Liu, A. Chen, and X. He, "Interleaved three-level boost converter with zero diode recovery loss," in Applied Power Electronics Conference and Exposition, APEC '04, Vol. 2, pp. 1090-1095, 2004.
  2. N. Shanthi and R. Deepalaxmi, "Performance analysis of three level interleaved boost converter with coupled inductor," in 2019 Fifth International Conference on Electrical Energy Systems (ICEES), May 2019.
  3. A. S. Musale and B. T. Deshmukh, "Three level DC-DC boost converter for high conversion ratio," in 2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT), Mar. 2016.
  4. N. Osman, M. F. M. Elias, and N. A. Rahim, "Three-level hybrid boost converter with high voltage gain," in 4th IET Clean Energy and Technology Conference (CEAT 2016), Nov. 2016.
  5. N. Shanthi and R. Deepalaxmi, "Performance analysis of three level interleaved boost converter with coupled inductor," in 2019 Fifth International Conference on Electrical Energy Systems (ICEES), Chennai, India, pp. 1-6, 2019.
  6. M. H. Granza, C. H. Illa-Font, and R. Gules, "Single-phase non-isolated high power factor rectifier based on an interleaved DCM boost converter in a three-level configuration," in 2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), Fortaleza, pp. 1-6, 2015.
  7. Z. Hao, Z. J. Hua, H. Bing, and T. C. Nan, "A new interleaved three-level boost converter and neutral-point potential balancing," in 2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA), Toronto, ON, pp. 1093-1096, 2013.
  8. R. B. Florencio, M. D. Bellar, and A. M. A. Bento, "Solar PV energy system based on series interleaved three-level boost converter and five-level MLC2 inverter," in 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA), Oct. 2018.
  9. H. C. Chen and J. Y. Liao, "Modified interleaved current sensorless control for three-level boost PFC converter with asymmetric loads," in 2014 International Power Electronics Conference (IPEC-Hiroshima 2014-ECCE ASIA), May 2014.
  10. S. Dusmez, A. Hasanzadeh, and A. Khaligh, "Comparative analysis of bidirectional three-level DC-DC converter for automotive applications," in IEEE Transactions on Industrial Electronics, Vol. 62, No. 5, pp. 3305-3315, May 2015. https://doi.org/10.1109/TIE.2014.2336605
  11. R. S. Farswan and B. G. Fernandes, "Analysis of different PWM schemes for 3-level boost converter to reduce current stress in DC link capacitors of single phase NPC inverter," in 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC), Jun. 2015.