Bumpless Mode Transition for Multilevel DC–DC Converters Using a Switched Affine Control Scheme

作者：Xiaozeng Xu, Yanzheng Zhu, Fen Wu, Xudong Zhao, Xinkai Chen · 发表于：IEEE Transactions on Industrial Electronics · 年份：2025 · DOI：10.1109/tie.2025.3626658 · 被引用次数：3 · 研究领域：HVDC Systems and Fault Protection、Multilevel Inverters and Converters、Microgrid Control and Optimization

This research is dedicated to the bumpless transfer control of multilevel dc–dc converters, which are conceptualized as a class of discrete-time switched affine systems (SASs). An innovative bumpless transfer control methodology is proposed, which provides a controller reliant on a union of multiple ellipsoids and a state-dependent switching law. This methodology ensures the convergence of the system state to a union of multiple ellipsoids, facilitating smooth transitions during switching events. By introducing the limitation constraints on bumps and a switching multishifted-point-dependent Lyapunov functional, sufficient conditions are derived to verify the solvability of the presented bumpless transfer control problem. Furthermore, the methodology is generalized to SASs with uncertainties, and the corresponding robust stability conditions are provided. Finally, the efficacy of the proposed method is validated through three examples, including an experimental verification of a multilevel dc–dc converter.