Decoupled Design of Voltage Regulating and Balancing Controls for Four-Level Flying Capacitor Converter

This article declares a simple voltage balancing and decoupling control methodology for four-level flying capacitor converter. The proposed approach only uses two proportional controllers to balance the voltages one additional proportional-integral controller regulate output without sensing inductor current. decoupled design reduces interactions between regulating loop loop. Eventually, 400-W prototype is set up verify theoretic analysis dynamic performance.