Citation :

Mulchand Ayalani, Saurabh Pandya, "Modelling a Two-Phase Interleaved ZETA Converter using State-Space Representation," International Journal of Electrical and Electronics Engineering, vol. 13, no. 4, pp. 67-76, 2026. Crossref, https://doi.org/10.14445/23488379/IJEEE-V13I4P105

Abstract

In this paper, a comprehensive state-space modelling approach is developed for the dynamic analysis of a two-phase interleaved ZETA DC-DC converter operating in continuous conduction mode. The proposed approach systematically derives mode-wise differential equations, and the overall averaged state-space matrices of the converter are formulated. Using this model, the corresponding small-signal transfer function is derived analytically, enabling detailed analysis of the interleaved converter dynamics. The obtained model, described by differential equations, is implemented in the MATLAB environment to evaluate dynamic responses, including step, impulse, and frequency-domain characteristics. Simulation results in Simulink validate the accuracy of the formulated converter model. The developed model provides a control-oriented analytical foundation that can be effectively employed for closed-loop controller design in high-power DC-DC conversion applications.

Keywords

DC-DC converter, Interleaved ZETA (IZ) Converter, Modelling, State-Space Averaging (SSA) Model.

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