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A Novel Topology of LC Series Resonant Converter Which Can Significantly Improve the Power Factor

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The Proceedings of the 17th Annual Conference of China Electrotechnical Society (ACCES 2022)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 1012))

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Abstract

As a classical topology, LC series resonant converters are widely used in various pulsed power systems as capacitor charging power supplies because of their easy implementation of soft switching and strong short-circuit resistance. However, the input current of this topology contains a very large AC component, and the power factor is very low, which puts forward very high requirements on the output current capability of the front-stage circuit. At the same time, large input energy pulsation also brings large output voltage ripple. In this paper, a novel topology of LC series resonant converter is proposed. Through three-phase interleaved parallel input and series output, the power factor of this topology is greatly improved, and the output voltage ripple is also greatly reduced. In addition, this topology has lower requirements on the insulation voltage of the transformer, which is also helpful for reducing the volume of the transformer. At the same time, due to fewer high-voltage side windings, the parasitic capacitance of the transformer can also be greatly reduced, making the circuit closer to the ideal LC series resonant converter. The relevant simulation results verify the correctness of the theory proposed in this paper.

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Acknowledgments

Supported by the Interdisciplinary program of Wuhan National High Magnetic Field Center (Grant No. WHMFC202107), Huazhong University of Science and Technology.

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Correspondence to Hongfa Ding .

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Zheng, Y., Ding, H., Zhao, H., Wang, X. (2023). A Novel Topology of LC Series Resonant Converter Which Can Significantly Improve the Power Factor. In: Yang, Q., Li, J., Xie, K., Hu, J. (eds) The Proceedings of the 17th Annual Conference of China Electrotechnical Society. ACCES 2022. Lecture Notes in Electrical Engineering, vol 1012. Springer, Singapore. https://doi.org/10.1007/978-981-99-0357-3_17

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  • DOI: https://doi.org/10.1007/978-981-99-0357-3_17

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-99-0356-6

  • Online ISBN: 978-981-99-0357-3

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