The ultrafast protection speed requirement motivates the adoption of solid-state circuit breakers (SSCBs) for dc shipboard power systems. A 1 kV and 1.5 kA SS dc circuit breaker (DCCB) based on reverse blocking integrated gate commutated thyristor (RB-IGCT) semiconductor technology was designed, built, and tested for dc fault protection of naval dc shipboard power systems. This article presents different aspects and challenges in designing an RB-IGCT based SS DCCB, the selection and design of a selected protection coordination scheme, and the validation test setup and experimental testing results of a single SS DCCB and protection coordination between SS DCCBs. The developed SS DCCB delivers premium fault protection performance and is the solution of choice for demanding dc distribution systems, battery energy storage systems, and other distribution systems with high penetration of power electronics converters. Thanks to the fast fault interruption, the fault energy going through the system is greatly reduced and some components may be designed with lower engineering margins.

中文翻译：

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直流船用电源系统的固态断路器保护：断路器设计、保护方案、验证测试

超快保护速度要求促使采用固态断路器 (SSCB) 用于直流船载电源系统。基于反向阻断集成门极换向晶闸管 (RB-IGCT) 半导体技术的 1 kV 和 1.5 kA SS 直流断路器 (DCCB) 被设计、建造和测试，用于海军直流舰载电力系统的直流故障保护。本文介绍了设计基于 RB-IGCT 的 SS DCCB、选定保护协调方案的选择和设计、单个 SS DCCB 的验证测试设置和实验测试结果以及 SS DCCB 之间的保护协调的不同方面和挑战。开发的 SS DCCB 提供卓越的故障保护性能，是要求苛刻的直流配电系统、电池储能系统、和其他电力电子转换器渗透率高的配电系统。由于快速故障中断，通过系统的故障能量大大降低，并且某些组件的设计可能具有较低的工程余量。