电器与能效管理技术Issue(2)：14-18,53,6.DOI:10.16628/j.cnki.2095-8188.2019.02.003
混合型直流限流断路器用晶闸管开通过程的瞬态温度场分析
Transient Temperature Field Analysis of Thyristor Turn-on Process for Hybrid Limiting Circuit Breaker
摘要
Abstract
A thermal model for uneven distribution of thyristor dissipated power density was established according to the turn-on process of thyristor.This paper focuses on the thyristor turn-on speed and accurate acquisition of the thyristor power consumption in the simulation.Through the experimental measurement of the slope resistance during the thyristor turn-on process, the full turn-on time of the thyristor is obtained, by which the turn-on speed of the thyristor is obtained.Based on the obtained change law of slope resistance, the thyristor in the turn-on process is equivalent to a time-varying resistance.The voltage and the power consumption of the thyristor is obtained based on the known current.The calculation results show that the highest temperature of the thyristor is concentrated in the first open area.The current limit of the thyristor is obtained through experiments.And the calculation results show that the maximum temperature rise of the thyristor under this current condition exceeds 300 K, which causes the overheat breakdown of the thyristor.This paper provides the basis for the thyristor device selection under narrow pulse and high current conditions and the redundancy accessment.关键词
混合型直流限流断路器/晶闸管/开通速度/耗散功率/瞬态温度场/器件选型Key words
hybrid limiting circuit breaker/thyristor/turn-on speed/consumed power/transient temperature field/device selection分类
信息技术与安全科学引用本文复制引用
雷冉,戚连锁,庄劲武,王帅,刘思奇..混合型直流限流断路器用晶闸管开通过程的瞬态温度场分析[J].电器与能效管理技术,2019,(2):14-18,53,6.基金项目
国家自然科学基金项目资助(51607184) （51607184）
