Skip to main content
SpringerLink
Log in

A Simplified Power Loss Model of LLC Converter with Accurate Voltage Conversion

  • Conference paper
  • First Online:
The Proceedings of 2023 International Conference on Wireless Power Transfer (ICWPT2023) (ICWPT 2023)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 1161))

Included in the following conference series:

  • 132 Accesses

Abstract

The loss estimation accuracy decreases as the switching frequency deviating from the resonant frequency. A DC equivalent impedance model is proposed to improve the accuracy loss estimation, in this paper. The time domain model of LLC is simplified to calculate the average loss of each branches in a switching period, where the DC equivalent impedance can be obtained by circuit manipulation. Then, the equivalent loss model is established, respect to switching frequency, which estimates the loss accurately and describe the relationship between frequency and output voltage succinctly. Through the experiment of a 140W LLC prototype, the error of power loss is basically less than 10%.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution
Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 219.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD 279.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Bertolini, V., Lozito, G.M., Grasso, F.: An analysis of power losses in an LLC converter in Matlab-Simulink environment. In: 2022 IEEE International Conference on Environment and Electrical Engineering and 2022 IEEE Industrial and Commercial Power Systems Europe, pp. 1–6. IEEE, Madrid (2022)

    Google Scholar 

  2. Gao, S., Zhao, Z.: Magnetic integrated LLC resonant converter based on independent inductance winding. IEEE Trans. Power Electron. 9, 660–672 (2021)

    Google Scholar 

  3. Choi, S., Kim, R.: Power loss analysis of full-bridge LLC resonant converter. In: 2021 24th International Conference on Electrical Machines and Systems (ICEMS), pp. 179–182, Gyeongju (2021)

    Google Scholar 

  4. Zhang, W., Wang, F., Costinett, D.J., et al.: Investigation of Gallium Nitride devices in high-frequency LLC resonant converters. IEEE Trans. Power Electron. 32(1), 571–583 (2017)

    Article  Google Scholar 

  5. Yang, Y., Zhang, L., Ma, T.: Conduction loss analysis and optimization design of full bridge LLC resonant converter. In: 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), pp. 2703–2707. IEEE, Niigata (2018)

    Google Scholar 

  6. Wei, Y., Luo, Q., Mantooth, A.: LLC resonant converter-frequency domain analysis or time domain analysis. In: 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), pp. 552–557. IEEE, Nanjing (2020)

    Google Scholar 

  7. Awasthi, A., Bagawade, S., Kumar, A., et al.: An exact time domain analysis of DCM boost mode LLC resonant converter for PV applications. In: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, pp. 1005–1010. IEEE, Washington (2018)

    Google Scholar 

  8. Wei, Y., Luo, Q., Wang, Z., et al.: A complete step-by-step optimal design for LLC resonant converter. IEEE Trans. Power Electron. 36(4), 3674–3691 (2021)

    Article  Google Scholar 

  9. Wang, Z.: Time domain model of full bridge LLC circuit and its analysis. Autom. Electric Power Syst. 42(20), 138–143+164 (2018). (in Chinese)

    Google Scholar 

  10. Kumar, A., Bagawade, S.: A novel time domain analysis of the LLC-L resonant converter for the use of the CLL and LLC resonant converter. In: 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 3453–3460, Anaheim (2019)

    Google Scholar 

  11. Yang, D., Chen, C., Duan, S., et al.: A Variable duty cycle soft startup strategy for LLC series resonant converter based on optimal current-limiting curve. IEEE Trans. Power Electron. 31(11), 7996–8006 (2016)

    Article  Google Scholar 

Download references

Acknowledgments

This research was partially funded by the National Natural Science Foundation of China under Grant 52207220, the Natural Science Foundation of Zhejiang Province under Grant LQ22E070005 and the Wenzhou Committee of Science and Technology under Grant G20220027.

Author information

Authors and Affiliations

  1. College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou, 325035, China

    Tingxuan Huang, Kang Liu, Wenjie Xi, Wenhao Xie & Xiangou Zhu

  2. Department of Fundamental Electrical Engineering, Belarusian State University of Informatics and Radioelectronics, 220013, Minsk, Belarus

    Vadim Zhuravliov

  3. Zhejiang Testing Inspection Center for High-Low Voltage Electrical Products Quality, Yueqing, 325600, China

    Haiqing Hu

Authors
  1. Tingxuan Huang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kang Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Wenjie Xi
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Wenhao Xie
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Xiangou Zhu
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Vadim Zhuravliov
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Haiqing Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Wenhao Xie .

Editor information

Editors and Affiliations

  1. Harbin Institute of Technology, Weihai, Shandong, China

    Chunwei Cai

  2. Southeast University, Nanjing, Jiangsu, China

    Xiaohui Qu

  3. Southwest Jiaotong University, Chengdu, Sichuan, China

    Ruikun Mai

  4. Tsinghua University, Beijing, China

    Pengcheng Zhang

  5. Harbin Institute of Technology, Weihai, Shandong, China

    Wenping Chai

  6. Harbin Institute of Technology, Weihai, Shandong, China

    Shuai Wu

Rights and permissions

Reprints and permissions

Copyright information

© 2024 Beijing Paike Culture Commu. Co., Ltd.

About this paper

Check for updates. Verify currency and authenticity via CrossMark

Cite this paper

Huang, T. et al. (2024). A Simplified Power Loss Model of LLC Converter with Accurate Voltage Conversion. In: Cai, C., Qu, X., Mai, R., Zhang, P., Chai, W., Wu, S. (eds) The Proceedings of 2023 International Conference on Wireless Power Transfer (ICWPT2023). ICWPT 2023. Lecture Notes in Electrical Engineering, vol 1161. Springer, Singapore. https://doi.org/10.1007/978-981-97-0869-7_25

Download citation

  • DOI: https://doi.org/10.1007/978-981-97-0869-7_25

  • Published:

  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-97-0868-0

  • Online ISBN: 978-981-97-0869-7

  • eBook Packages: EngineeringEngineering (R0)

Publish with us

Policies and ethics

Search

Navigation