A new multi-mode fault-tolerant operation control strategy of multiphase stacked interleaved Buck converter for green hydrogen production

This paper presents a new fault-tolerant operation method of multiphase stacked inter-leaved Buck converter for green hydrogen production. An improved topology and new fault-tolerant control strategy is proposed. Multi-mode fault-tolerant operation of multi-phase stacked interleaved Buck converter for different performance requirements of electrolyzer in hydrogen production system is realized. The multiphase stacked inter-leaved Buck converter can not only achieve elimination of output current ripple in normal operation mode, but also adopt different fault-tolerant modes according to different de-mands of electrolyzers in case of failure of any phase of converter. The proposed method is able to improve the availability of multiphase stacked interleaved Buck converter, reduce the times of equipment shutdown, and ensure the continuous operation of hydrogen production system from renewable energy sources. The effectiveness of the proposed method has been verified by experimental results.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This paper presents a new fault-tolerant operation method using a multiphase stacked inter-leaved Buck converter for green hydrogen production. By introducing an improved topology and a fault-tolerant control strategy, the converter can operate in multiple modes to meet the different performance requirements of the electrolyzer in the hydrogen production system. The proposed method improves the availability of the converter, reduces equipment shutdowns, and ensures the continuous operation of the hydrogen production system.