The distribution energy router (DER) is the core of the interacted and interconnected micro grid in future distribution network, which fully meets the needs of the ubiquitous power internet of things (IOT) based future distribution network. The reliability of micro grid which applies the DER is highly related to its cascaded full-bridge converters. With the redundant full-bridge converters and IOT technology, the DER can stand the component failures, hence improve the robustness of the DER as well as the future interacted and interconnected micro grid. For a ubiquitous power IOT technology based DER, this paper proposes a redundancy design for fault tolerant strategy. Several redundancy designs are discussed in detail with operational principles and control strategies. The proposed redundancy design is implemented on the power circuit of one phase for DER consists of a nine-level cascaded full-bridge converter in Saber simulation platform, and the simulation results prove that the redundancy design can minimize the customer’s power interrupt time and the consequent damages to the system.

中文翻译：

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基于物联网的互联互联微电网能源路由器容错冗余

分布式能源路由器（DER）是未来配电网中互动互联微电网的核心，充分满足基于泛在电力物联网（IOT）的未来配电网需求。应用DER的微电网的可靠性与其级联全桥变流器密切相关。通过冗余全桥变流器和物联网技术，分布式能源可以承受组件故障，从而提高分布式能源的鲁棒性以及未来交互和互连的微电网。针对基于泛在电力物联网技术的分布式能源，本文提出了一种容错策略的冗余设计。详细讨论了几种冗余设计以及操作原理和控制策略。