Active Capacitor Voltage Balancing Control for Three-Level Flying Capacitor Boost Converter Based on Average-Behavior Circuit Model

Hung-Chi Chen, Che Yu Lu*, Wei Hsiang Lien, Tien Hung Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

This paper proposes an active voltage balancing control strategy for the three-level flying capacitor boost converter (FCBC). The average-behavior circuit model for the three-level FCBC is studied, and then, the relationship of control to output signals is presented to analyze the coupling effects between the capacitor voltage balancing and the output voltage regulation. In addition, classical proportional and proportional-integral controllers are used for the voltage balancing control loop and the output voltage regulating control loop, respectively. Finally, the proposed control algorithm is implemented in a commercial field programmable gate array platform. Some simulation and experimental results demonstrate that the proposed active control strategy is able to achieve the desired effects for the steady-state and transient responses.

Original languageEnglish
Article number8492436
Pages (from-to)1628-1638
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume55
Issue number2
DOIs
StatePublished - 1 Mar 2019

Keywords

  • Capacitor voltage balancing
  • DC-DC power conversion
  • field programmable gate array (FPGA)
  • flying capacitor boost converter (FCBC)
  • output voltage regulation

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