한국산업융합학회 논문집 (Journal of the Korean Society of Industry Convergence)

  • 제22권3호
  • /
  • Pages.365-371
  • /
  • 2019
  • /
  • 1226-833X(pISSN)
  • /
  • 2765-5415(eISSN)
한국산업융합학회 (The Korean Society of Industry Convergence)
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고전압 입력용 SMPS의 고효율 전략

High Efficiency Strategy of High Input Voltage SMPS

  • 우동영 (전남대학교 전기공학과) ;
  • 박성미 (한국승강기대학교 승강기공학부) ;
  • 박성준 (전남대학교 전기공학과)
  • 투고 : 2019.04.06
  • 심사 : 2019.06.03
  • 발행 : 2019.06.30
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초록

Recently, the demonstration and research on the power transmission using high voltage DC such as HVDC(High Voltage DC), Smart Grid, DC transmission and distribution have been actively conducted. In order to control the power converter in high-voltage DC power transmission system, SMPS(Switching Modulation Power Supply) for power converter control using high-voltage DC input is essential. However, the demand for high-pressure SMPS is still low, so the development is not enough. In the low-output SMPS using the high-voltage input, it is difficult to achieve high efficiency due to the switching transient loss especially at light load. In this paper, we propose a new switching scheme for high power SMPS control for low output power. The proposed method can provide better efficiency increase effect in the light load region compared to the existing PWM method. To verify the feasibility of the proposed method, a 40 W SMPS for HVDC MMC(Modulation Multi-level Converter) was designed and verified by simulation.

키워드

SOOOB6_2019_v22n3_365_f0001.png 이미지

Fig. 1 Structure of MMC and role of SMPS

SOOOB6_2019_v22n3_365_f0002.png 이미지

Fig. 3 Structure of MMC and role of SMPS

SOOOB6_2019_v22n3_365_f0003.png 이미지

Fig. 2 High-pressure SMPS block diagram

SOOOB6_2019_v22n3_365_f0004.png 이미지

Fig. 4 Circuit of Pressure Reducing Converter

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Fig. 5 Simulation circuit diagram of Proposed Method

SOOOB6_2019_v22n3_365_f0006.png 이미지

Fig. 6 Simulation result of Proposed Method

참고문헌

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  2. Man Siu, Philip K. T. Mok, Ka Nang Leung, Yat-Hei Lam and Wing-Hung Ki, "A Voltage-Mode PWM Buck Regulator With End-Point Prediction," IEEE Transaction on circuits and systems. Vol. 53, No. 4, pp. 294-298, (2006).
  3. D. H Seo, O. J. Lee, S. H. Lim, J. S. Park, "Asymmetrical PWM Fly back Converter," IEEE PESC, pp. 848-852, (2000).
  4. Chun-Sung Kim, Seung-Hwan Jung, Jung-Goo Hwang, Seong-Mi Park, Sung-Jun Park, "Circulating Current Control in MMC-HVDC Considering Switching Device Current Capacity under Unbalanced Voltage Conditions," The Korean Institute of Illuminating and electrical Installation Engineers, Vol. 30, No. 1, pp.55-65, (2016) https://doi.org/10.5207/JIEIE.2016.30.1.055
  5. Hee-Won Yang, Seong-Ae Kim, Seong-Mi Park, Sung-Jun Park, "High Voltage SMPS Design based on Dual-Excitation Flyback Converter," The Korean Society of Industry Convergence, Vol. 20, No. 2, pp115-124, (2017).
  6. Yeon-Joo Choi, Hee-Jun Kim, "A Study on the High Input Voltage SMPS for Driving Gate in MV Drive System," Proceedings of KIEE, Vol. 2017 No. 7. pp.1026-1027, (2017).
  7. Yeon-Joo Choi, Hee-Jun Kim, "A Study on the High Input Voltage SMPS for Driving Gate in MV Drive System," Proceedings of KIEE, Vol. 2017, No. 7, pp. 1026-1027, (2017).