In this study, a double-input single-output bidirectional DC-DC converter is considered. This particular architecture allows less switches to be used than a conventional solution. A new feed-forward current control for this DC-DC converter with three switches is presented in this paper. The modulation technique proposed in the literature for the aforementioned converter leads to a consistent loss reduction at low load, exploiting the DCM. As a drawback, when using this control strategy, the dynamic response worsens significantly. To speed up the control, a feed-forward approach is designed and implemented using a simplified converter electrical model. The proposed strategy is compared with the conventional PI controller, and it is validated and verified through simulation results in the MATLAB/Simulink/PLECS environment and through experimental tests using a converter prototype.

A New Feed-Forward Control for Dynamics Improvement in a Dual-Input DC–DC Converter for Hybrid Vehicle Applications

Alessandro Benevieri;Lorenzo Carbone;Simone Cosso;Mario Marchesoni;Massimiliano Passalacqua;Stefano Savio;Luis Vaccaro
2024-01-01

Abstract

In this study, a double-input single-output bidirectional DC-DC converter is considered. This particular architecture allows less switches to be used than a conventional solution. A new feed-forward current control for this DC-DC converter with three switches is presented in this paper. The modulation technique proposed in the literature for the aforementioned converter leads to a consistent loss reduction at low load, exploiting the DCM. As a drawback, when using this control strategy, the dynamic response worsens significantly. To speed up the control, a feed-forward approach is designed and implemented using a simplified converter electrical model. The proposed strategy is compared with the conventional PI controller, and it is validated and verified through simulation results in the MATLAB/Simulink/PLECS environment and through experimental tests using a converter prototype.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/1186535
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