Research on Fault-Tolerant Operation of Flying Capacitor 5-Level DC-DC Buck Converter Based on Balanced Network

Abstract

After the flying capacitor multilevel converter enters fault-tolerant operation, it is very important to restore the normal operation quickly to improve the stability and reliability of the system. This paper mainly studies the fault-tolerant operation analysis of flying capacitor 5-level DC-DC Buck converter. By adding balance network, the process of voltage rebalancing of flying capacitor after fault-tolerant operation is accelerated. The proposed concept is verified by the simulation and experimental results of the flying capacitor 5-level DC-DC Buck converter topology.