摘要
相较于机械式断路器,固态断路器因其更快的分断速度和更高的寿命等优点被广泛关注。介绍了一种基于SiC器件的低压直流固态断路器拓扑和工作原理,分析其技术难点,包括低感封装及器件设计、隔离开关技术和快速故障识别技术。研制了一种±375 V直流固态断路器样机,同时进行了故障电流关断测试和温升测试。结果表明所设计直流固态断路器能够在百微秒内实现1 kA短路电流分断,并具备快速故障识别、保护曲线可编程、外部通信与远程控制等功能。
Compared with the mechanical circuit breakers,the solid-state circuit breakers have been widely focused for their advantages such as the faster breaking speed and higher lifetime.A low-voltage DC solid-state circuit breaker topology and operating principle based on SiC devices is introduced,and the technical difficulties of solid-state circuit breakers are analyzed,including the low-inductance package and device design,the isolated switch technology and the fast fault identification technology.A prototype of±375 V DC solid-state circuit breaker is developed and tested for the fault current breaking and the temperature rise.The results show that the DC solid-state circuit breaker can achieve 1 kA short-circuit current breaking within a hundred microseconds.In addition,the prototype is equipped with the functions such as the fast fault identification,the programmable protection curve,the external communication and the remote control.
作者
吴鑫
陶闯闯
王景帅
吴益飞
吴翊
WU Xin;TAO Chuangchuang;WANG Jingshuai;WU Yifei;WU Yi(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《电器与能效管理技术》
2024年第1期1-5,70,共6页
Electrical & Energy Management Technology
关键词
固态断路器
SIC器件
器件封装
快速故障识别
solid-state circuit breaker
SiC device
device packaging
fast fault identification
作者简介
吴鑫(1998-),男,博士研究生,研究方向为直流固态断路器;陶闯闯(1999-),男,硕士研究生,研究方向为直流固态断路器;王景帅(2000-),男,硕士研究生,研究方向为直流固态断路器。
