Abstract
Though the sub-module works stably alone, the cascaded DC-DC converters system may work unstably on account of the interaction among the sub-modules. Therefore, the stability analysis of cascaded DC-DC converters system is a hot issue. In this paper, at the beginning, the stability criterion for single DC-DC converter based on describing function method is reviewed. Following that, taking two-stage cascaded boost converters system as an example, the linearization of source converter or load converter is applied to analyze the stability of cascaded DC-DC converters system. What's more, the stability criterion for two-stage cascaded DC-DC converters system is proposed by combining the describing function method and linearization of source converter or load converter. Finally, the proposed stability criterion in this paper is verified by simulation and experimental results, which provides a novel stability analysis approach for cascaded DC-DC converters system based on describing function method.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call