Abstract
To enhance the robustness and to deal with the switch fault uncertainty of a floating interleaved dc–dc boost converter (FIBC), an adaptive active disturbance rejection control (ADRC) is proposed in this paper. In particular, the controller parameter b 0 is adapted by obtaining approximately the system input control gain b in real time, based on the output duty cycles via digital filters. Compared with the conventional ADRC, the performance of the proposed controller is significantly improved, without the need of extra sensors. Moreover, the influence of the controller parameters on the system dynamical performance is analyzed theoretically, providing a practical guideline for controller tuning. The simulation and experimental results validate the effectiveness and the robustness of the proposed controller.
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