Derivation of transfer function of LLC current resonant converter using numerical calculation

Masahito Shoyama; Takuma Sagara; Yusuke Yamashita; Jun Imaoka; Yu Yonezawa; Yoshiyasu Nakashima

doi:10.1109/ECCE.2017.8096559

Derivation of transfer function of LLC current resonant converter using numerical calculation

Masahito Shoyama, Takuma Sagara, Yusuke Yamashita, Jun Imaoka, Yu Yonezawa, Yoshiyasu Nakashima

Applied Energy Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Among various converters, the LLC electric current resonant converter attracts attention because of high power density, low noise and high efficiency. However, this converter cannot apply the analysis of averaging method, and impossible to derivate the transfer function, so designing is difficult. In this study, we devised a method to derive a frequency response characteristic with a transfer function type using based on the way of thinking of averaging method, and succeeded expressing transfer function of the bode diagram which agreed with actual survey. Moreover, we derived poles from the transfer function, and showed the relation between the shape of the bode plots and poles.

Original language	English
Title of host publication	2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3056-3062
Number of pages	7
ISBN (Electronic)	9781509029983
DOIs	https://doi.org/10.1109/ECCE.2017.8096559
Publication status	Published - Nov 3 2017
Event	9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States Duration: Oct 1 2017 → Oct 5 2017

Publication series

Name	2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
Volume	2017-January

Other

Other	9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
Country/Territory	United States
City	Cincinnati
Period	10/1/17 → 10/5/17

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Renewable Energy, Sustainability and the Environment
Control and Optimization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ECCE.2017.8096559

Cite this

Shoyama, M., Sagara, T., Yamashita, Y., Imaoka, J., Yonezawa, Y., & Nakashima, Y. (2017). Derivation of transfer function of LLC current resonant converter using numerical calculation. In 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 (pp. 3056-3062). [8096559] (2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2017.8096559

Derivation of transfer function of LLC current resonant converter using numerical calculation. / Shoyama, Masahito; Sagara, Takuma; Yamashita, Yusuke et al.
2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 3056-3062 8096559 (2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017; Vol. 2017-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Shoyama, M, Sagara, T, Yamashita, Y, Imaoka, J, Yonezawa, Y & Nakashima, Y 2017, Derivation of transfer function of LLC current resonant converter using numerical calculation. in 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017., 8096559, 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017, vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 3056-3062, 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017, Cincinnati, United States, 10/1/17. https://doi.org/10.1109/ECCE.2017.8096559

Shoyama M, Sagara T, Yamashita Y, Imaoka J, Yonezawa Y, Nakashima Y. Derivation of transfer function of LLC current resonant converter using numerical calculation. In 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 3056-3062. 8096559. (2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017). doi: 10.1109/ECCE.2017.8096559

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abstract = "Among various converters, the LLC electric current resonant converter attracts attention because of high power density, low noise and high efficiency. However, this converter cannot apply the analysis of averaging method, and impossible to derivate the transfer function, so designing is difficult. In this study, we devised a method to derive a frequency response characteristic with a transfer function type using based on the way of thinking of averaging method, and succeeded expressing transfer function of the bode diagram which agreed with actual survey. Moreover, we derived poles from the transfer function, and showed the relation between the shape of the bode plots and poles.",

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AB - Among various converters, the LLC electric current resonant converter attracts attention because of high power density, low noise and high efficiency. However, this converter cannot apply the analysis of averaging method, and impossible to derivate the transfer function, so designing is difficult. In this study, we devised a method to derive a frequency response characteristic with a transfer function type using based on the way of thinking of averaging method, and succeeded expressing transfer function of the bode diagram which agreed with actual survey. Moreover, we derived poles from the transfer function, and showed the relation between the shape of the bode plots and poles.

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Derivation of transfer function of LLC current resonant converter using numerical calculation

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