Planar Magnetic Integration Design Based on LLC Resonant Converter

Authors

  • Xianming Deng Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China
  • Kang Zheng Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China
  • Yanxing Gu Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China
  • Ankang Zhang Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China
  • Zhen Jia Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

DOI:

https://doi.org/10.13052/2021.ACES.J.361112

Keywords:

High frequency, printed circuit board(PCB) transformer, magnetic integration, LLC resonant converter.

Abstract

High power density and high efficiency is a major trend in the development of power converters. The main measure to reduce the size of power converter is to improve the working frequency, and the limiting factor is the size of magnetic components. With the development of new semiconductor devices, the working frequency of power converters has been significantly improved, which gives us the opportunity to apply printed circuit board (PCB) winding planar magnetics. Compared with the traditional high frequency magnetics, planar magnetics not only reduce the size of the magnetic components effectively but also improve reliability through repeatable automated manufacturing, which is convenient for large-scale production. Magnetic integration is another method to reduce the size of the power converter. In this paper, a new magnetic structure based on PCB winding is proposed, which integrates inductance and transformer into one component. And the inductor can be independent of the transformer. In this structure, the inductance of inductor and excitation inductance of transformer can be easily controlled by changing the number of winding turns or the length of the air gap. A 20-W 200-kHz half-bridge LLC resonant converter with a peak efficiency of 94.9% is built to verify the feasibility of the designed planar magnetic integrated structure.

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Author Biographies

Xianming Deng , Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

Xianming Deng was born in Sichuan, China. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from the China University of Mining and Technology, Jiangsu, China.

He is currently a Professor with the School of Electrical and Power Engineering, China University of Mining and Technology. His current research fields include power electronics and motor drive.

Kang Zheng, Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

Kang Zheng received the B.S. degree in electrical engineering from the China University of Mining and Technology, Xuzhou, China, in 2019, where he is currently working toward the M.S. degree with the School of Electrical and Power Engineering.

His current research interests include high frequency transformer and DC/DC converters.

Yanxing Gu, Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

Yanxing Gu received the B.S. degree in electrical engineering from the Xu Zhou University of Technology, Xuzhou, China, in 2019. She is currently working toward the M.S. degree with the China University of Mining and Technology.

Her current research direction is in motor design.

Ankang Zhang, Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

Ankang Zhang was born in Jiangsu, China. He received the B.S. degree in electrical engineering and intelligent control from Nantong University, Jiangsu, China. He is currently working toward the master’s degree with the China University of Mining and Technology.

His current research interests include motor control and transformer design.

Zhen Jia, Jiangsu Province Laboratory of Mining Electric and Automation, China University of Mining and Technology, Xuzhou 221116, China

Zhen Jia was born in Xinjiang, China. He received the B.S. degree in electrical engineering from Chongqing University, Chongqing, China. He is currently working toward the master’s degree with the China University of Mining and Technology.

His current research interests include power electronics and motor drive.

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Published

2021-12-30

How to Cite

[1]
X. . Deng, K. . Zheng, Y. . Gu, A. . Zhang, and Z. . Jia, “ Planar Magnetic Integration Design Based on LLC Resonant Converter”, ACES Journal, vol. 36, no. 11, pp. 1474–1483, Dec. 2021.

Issue

2021: Vol 36 Iss 11

Section

General Submission