[논문]DVR 전원용 진보된 Phase-Shedding 제어 알고리즘 개발

이준영; 김철민; 김종수

doi:10.6113/tkpe.2021.26.6.397

DVR 전원용 진보된 Phase-Shedding 제어 알고리즘 개발
Development of Advanced Phase-Shedding Control Algorithm for DVR Power Supply 원문보기

전력전자학회 논문지 = The Transactions of the Korean Institute of Power Electronics, v.26 no.6, 2021년, pp.397 - 403

이준영 (Dept. of Electrical Engineering, Daejin University) , 김철민 (Dept. of Electrical Engineering, Daejin University) , 김종수 (Dept. of Electrical Engineering, Daejin University)

Abstract ▼ AI-Helper

In this paper, phase shedding algorithm that measuring to converter's input and output parameter during real-time to control the number of driving converters is proposed. The proposed phase-shedding algorithm drives the DVR power supply with the optimal converter's combination without the loss calculation curve and the lookup table in which the efficiency is measured in advance. The proposed algorithm was implemented through a digital controller and verified in a two-modular LLC converter with a single rated power of 60 Win a 120 W DVR power supply system. Experimental results are presented to prove the validity of the proposed algorithm.

주제어

표/그림 (10)

그림 Fig. 1. Annual CCTV accumulation status in South Korea.
그림 Fig. 2. Typical efficiency curves according to the number of operating phases.
그림 Fig. 3. Typical loss curve (power losses versus load current).
표 TABLE I EQUATION OF LOSS CALCULATION ABOUT LLC CONVERTER'S COMPONENTS^[6]-[8]
그림 Fig. 5. Flow chart of the proposed phase-shedding algorithm.
그림 Fig. 4. Concept of the proposed phase-shedding algorithm.
그림 Fig. 6. Sensing schem for efficiency calculation.
그림 Fig. 7. Hardware setup for experimentation.
그림 Fig. 8. Efficiency curves according to measured load current.
그림 Fig. 9. Waveforms with the proposed algorithm. (a) Output is lower than the single module rating, (b) Output is higher than the single module rating.

참고문헌 (9)

Personal Information Protection Committee, "Installation and operation of CCTV for public institutions," e-Country Indicators, May. 2021. [Online]. Available: https://www.index.go.kr/potal/main/EachDtlPageDetail.do?idx_cd2855#quick_02.
P. Zumel, C. Fernandez, A. de Castro, and O. Garcia, "Efficiency improvement in multiphase converter by changing dynamically the number of phases," in 2006 37th IEEE Power Electronics Specialists Conference, Jeju, Korea, pp. 1-6, 2006.
J. T. Su and C. W. Liu, "A novel phase-shedding control scheme for improved light load efficiency of multiphase interleaved DC-DC converters," IEEE Transactions on Power Electronics, Vol. 28, No. 10, pp. 4742-4752, 2013.

상세보기
S. H. Baek, "A phase shedding control algorithm for tracking maximum efficiency of 3-phase interleaved boost converter," M.S. dissertation, Department of Energy System Engineering, Sungkyunkwan University, Oct. 2016.
J. Y. Lee, H. B. Kim, and J. S. Kim, "Real-time optimal operating point estimation method of phase shedding algorithm for improving light load efficiency," in 2020 Power Electronics Annual Conference, pp. 148-149, Nov. 2020.
A. Costabeber, P. Mattavelli, and S. Saggini, "Digital time-optimal phase shedding in multiphase buck converters," IEEE Transactions on Power Electronics, Vol. 25, No. 9, pp. 2242-2247, 2010.

상세보기
C. Yang, T. Liang, K. Chen, J. Li, and J. Lee, "Loss analysis of half-bridge LLC resonant converter," in 2013 1st International Future Energy Electronics Conference (IFEEC), Tainan, Taiwan, pp. 155-160, 2013.
T. Jun et al., "Loss analysis and optimization design of half-bridge LLC resonant converter," in 2019 The 5th International Conference on Electrical Engineering, Control and Robotics (EECR 2019), Guangzhou, China, Jan. 2019.
Anders Lind, "LLC converter design note," Infineon Technologies, AN 2013-03, V1.0, Mar. 2013.

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