中国电机工程学报2024，Vol.44Issue(12)：4859-4868,中插21,11.DOI:10.13334/j.0258-8013.pcsee.230076
可控电流源型换流器IGCT串联均压技术
IGCT Series Voltage Sharing Technology of Controllable Current Source Converter
摘要
Abstract
The control of voltage sharing is one of the core technologies of the current source converter based on series connected integrated gate commutation thyristor(IGCT).At present,there is a lack of research and testing on series-connected IGCTs,specifically addressing the inconsistencies in turn-on and turn-off characteristics caused by variations in IGCTs,trigger delay and snubber parameters.First of all,the mechanism caused voltage unbalance is carried out and a sub-module circuit for voltage sharing is proposed in this paper.Then,the inconsistency factors leading to IGCTs'turn-on inconsistency is analyzed,and the coordination between the IGCT utilization and protection voltage ratio is suggested.After that,this paper analyzes the natural and active turn-off characteristics and recommends snubber parameters.Finally,a test platform and an 8-level series IGCT module prototype are developed to verify the performance.Significantly,the test results indicate that the inconsistency of the voltage among IGCTs is controlled within 8%.关键词
电流源型换流器/均压特性/静态均压/开通一致性/关断一致性Key words
current source converter(CSC)/voltage sharing characteristics/static voltage sharing/turning on inconsistence/turning off inconsistence分类
信息技术与安全科学引用本文复制引用
陈龙龙,汤广福,魏晓光,王以璇,崔翔,高冲,张闻闻..可控电流源型换流器IGCT串联均压技术[J].中国电机工程学报,2024,44(12):4859-4868,中插21,11.基金项目
国家电网公司科技项目(基于可控关断的电流源型换流器关键技术研究与样机研究)(5500202058059A0000). Science and Technology Project of State Grid Corporation(Research and Development of Controllable Switching Device Based Current Source Converter)(5500202058059A0000). （基于可控关断的电流源型换流器关键技术研究与样机研究）
