Multi-input power electronic converters have been gaining popularity in applications such as renewable energy sources and hybrid electric vehicles due to their reduced component count. In this paper, a new control method is introduced and successfully applied to a double-input buckboost converter to adjust the power supplied by each one of the sources. The control scheme is based on controlling the offset time between the switching commands while switching frequency is kept constant. Theoretically, it is proved that the offset time between the switch commands has a direct impact on the amount of current drawn from each source. The proposed control method has a very fast dynamic response and improves the stability of traditional controllers. Simulation results agree with the theoretical analysis.
D. Somayajula and M. Ferdowsi, "Power Sharing in a Double-Input Buckboost Converter using Offset Time Control," Proceedings of the 24th Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC '09, Institute of Electrical and Electronics Engineers (IEEE), Feb 2009.
The definitive version is available at http://dx.doi.org/10.1109/APEC.2009.4802799
24th Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC '09
Electrical and Computer Engineering
Keywords and Phrases
Double-Input Buckboost Converter; Offset Time Control; Power Sharing
Article - Conference proceedings
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