Uncertainty Modeling and Robust Control for LCL Resonant Inductive Power Transfer System

Xin Dai; Yang Zou; Yue Sun

Uncertainty Modeling and Robust Control for LCL Resonant Inductive Power Transfer System

Xin Dai

Yang Zou

Yue Sun

Vol. 13, No. 5, pp. 814-828, Sep. 2013

10.6113/JPE.2013.13.5.814

Generalized state space averaging

Inductive power transfer

LCL

Robust

Uncertainty

PDF

Abstract

The LCL resonant inductive power transfer (IPT) system is increasingly used because of its harmonic filtering capabilities, high efficiency at light load, and unity power factor feature. However, the modeling and controller design of this system become extremely difficult because of parameter uncertainty, high-order property, and switching nonlinear property. This paper proposes a frequency and load uncertainty modeling method for the LCL resonant IPT system. By using the linear fractional transformation method, we detach the uncertain part from the system model. A robust control structure with weighting functions is introduced, and a control method using structured singular values is used to enhance the system performance of perturbation rejection and reference tracking. Analysis of the controller performance is provided. The simulation and experimental results verify the robust control method and analysis results. The control method not only guarantees system stability but also improves performance under perturbation.

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Cite this article

[IEEE Style]

X. Dai, Y. Zou, Y. Sun, "Uncertainty Modeling and Robust Control for LCL Resonant Inductive Power Transfer System," Journal of Power Electronics, vol. 13, no. 5, pp. 814-828, 2013. DOI: 10.6113/JPE.2013.13.5.814.

[ACM Style]

Xin Dai, Yang Zou, and Yue Sun. 2013. Uncertainty Modeling and Robust Control for LCL Resonant Inductive Power Transfer System. Journal of Power Electronics, 13, 5, (2013), 814-828. DOI: 10.6113/JPE.2013.13.5.814.