Double-Loop Control Strategy for Buck/Boost-CLLLC Two-Stage Bidirectional DC/DC Converter

This paper adopts Buck/Boost and CLLLC cascade topology. Buck/Boost-CLLLC two-stage bidirectional DC/DC converter topology and its control strategy are suitable for medium and high-power applications with large fluctuation range of input voltage and bidirectional flow of power and have the advantages of wide input voltage range and high efficiency. Aiming at Buck/Boost-CLLLC two-stage bidirectional DC/DC converter, the working principle of bidirectional Buck/Boost converter and bidirectional CLLLC resonant converter is analyzed. The small-signal model of bidirectional Buck/Boost converter and bidirectional CLLLC resonant converter is built. A dual-loop control strategy for two-stage DC/DC converter is proposed, and a dual-loop controller is designed. Finally, the simulation model is built to verify. The validity of double-loop control strategy of Buck/Boost-CLLLC two-stage bidirectional DC/DC converter in wide input voltage range is verified. And the bidirectional power flow of Buck/Boost-CLLLC two-stage bidirectional converter is verified.

Language

  • English

Media Info

  • Media Type: Web
  • Edition: 1
  • Features: References;
  • Pagination: pp 171-181
  • Monograph Title: Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019: Novel Traction Drive Technologies of Rail Transportation
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01928283
  • Record Type: Publication
  • ISBN: 9789811528613
  • Files: TRIS
  • Created Date: Aug 23 2024 3:26PM