Modeling of a Transfer Function for Frequency Controlled Resonant Inverters

Mu-Ho Han; Chi-Hwan Lee; Woo-Hyun Kwon

Modeling of a Transfer Function for Frequency Controlled Resonant Inverters

Mu-Ho Han

Chi-Hwan Lee

Woo-Hyun Kwon

Vol. 9, No. 4, pp. 567-574, Jul. 2009

10.6113/JPE.2009.9.4.567

Resonant inverter

Complex Phasor Transform

Frequency Modulation

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Abstract

A linear transfer function for the output current control of frequency-controlled resonant inverters is proposed in this paper. The circuit of resonant inverters can be transformed into two coupled circuits through the complex phasor transform. The circuits consist of cross-coupled power sources and passive elements. The circuits are used to induce the state space equation, which is transformed into the 4th order cross-coupled transfer function. The 4th order cross-coupled transfer function is modeled into a 2nd order linear transfer function based on a behavior analysis of the pole and zero locations that facilitate a simple and intuitive linear transfer function. The feasibility and validity of the proposed linear transfer function were verified by simulation and experiment.

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Cite this article

[IEEE Style]

M. Han, C. Lee, W. Kwon, "Modeling of a Transfer Function for Frequency Controlled Resonant Inverters," Journal of Power Electronics, vol. 9, no. 4, pp. 567-574, 2009. DOI: 10.6113/JPE.2009.9.4.567.

[ACM Style]

Mu-Ho Han, Chi-Hwan Lee, and Woo-Hyun Kwon. 2009. Modeling of a Transfer Function for Frequency Controlled Resonant Inverters. Journal of Power Electronics, 9, 4, (2009), 567-574. DOI: 10.6113/JPE.2009.9.4.567.