AUTHORS: Jingyi Shao, Ying Luo
Download as PDF
ABSTRACT: The optimal LLC resonant converter with the great performance in wide range of load and frequency is described in this paper. The output voltage can be remained stable by changing the frequency in different input/load conditions. It can realize the high efficiency and high density. The LLC resonant converter is simplified as the FMA model firstly to analyse its operating characteristics. These characteristics then can be verified by simulation results. The practical circuit is also built on PCB to prove it work properly.
KEYWORDS: LLC resonant converter, FMA model, output voltage, frequency, high efficiency
REFERENCES:
[1] U. Kundu, K. Yenduri, and P. Sensarma, Accurate ZVS analysis for magnetic design and efficiency improvement of full-bridge LLC resonant converter, IEEE Transactions on Power Electronics, Vol. 32, No. 3, 2017, pp. 1703 - 1706.
[2] M. K. Kazimierczuk and D. Czarkowski, Resonant Power Converters, John Wiley & Sons, 2010.
[3] A. Gilbert, M. Foster, D. Stone, et al, Phase Locked Loop (PLL) based self-oscillating controller for LCC resonant converters, 4th IET Conf. on Power Electron, Mach & Drives, pp. 446–450.
[4] Y. Shen, Recent progress and development on power DC-DC converter topology, control, design and applications: A review, Renewable and Sustainable Energy Reviews, Vol. 81, No. 1, 2018, pp. 205-230.
[5] M. P. Foster, C. R. Gould, A. J. Gilbert, et al, Analysis of CLL voltage-output resonant converters using describing functions, IEEE Trans. Power Electron., Vol. 23, No. 4, 2008, pp. 1772–1781.
[6] R. Beiranvand, B. Rashidian, M. R. Zolghadri, et al, Using LLC resonant converter for designing wide-range voltage source, IEEE Transactions on Industrial Electronics., Vol. 58, No. 5, 2011, pp. 1746 - 1756.
[7] Hui-pin LIN, Xiao-guang JIN, Liang XIE, et al, A new variable-mode control strategy for LLC resonant converters operating in a wide input voltage range, Frontiers of Information Technology & Electronic Engineering, Vol. 18, No.3, 2017, pp. 410-422.
[8] R. Beiranvand, B. Rashidian, M. R. Zolghadri, et al, A design procedure for optimizing the LLC resonant converter as a wide output range voltage source, IEEE Transactions on Power Electronics, Vol. 27, No. 8, 2012, pp. 3749 - 3763.
[9] H. Li and Z. Jiang, On Automatic Resonant Frequency Tracking in LLC Series Resonant Converter Based on Zero-Current Duration Time of Secondary Diode, IEEE Transactions on Power Electronics, Vol. 31, No. 7, 2016, pp. 4956 - 4962.
[10] X. Fang, H. Hu, Z. J. Shen, et al, Operation mode analysis and peak gain approximation of LLC resonant converter, IEEE Transactions on Power Electronics, Vol. 27, No. 4, 2012, pp. 1985 - 1995.
