Abstract

Normally, the mathematical model of power converters in an electrical aircraft system is time-varying model due to the switching action. The time-varying model is very complicated for system analysis and design. Therefore, this paper presents how to derive time-invariant model of electrical aircraft system feeding a buck-boost converter using the combination between the DQ modeling method and the generalized state-space averaging method. The resulting model is validated by an intensive time-domain simulation of MATLAB. The results show that the proposed model can provide good accuracies in both transient and steady-state responses.

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