CAJ | 학술논문

为满足国家±1100 kV特高压直流的应用需求，适应换流阀用晶闸管向更高电压等级、更大电流容量、更高可靠性发展趋势，基于中国南车现有6英寸晶闸管成熟技术基础，通过计算机仿真与试验相结合的方法，优化晶闸管芯片结构设计，改善了晶闸管芯片边缘电场分布和电压稳定性，改善器件内部热分布与外部散热，提高了晶闸管电流容量；优化晶闸管芯片放大门极结构设计，改善了器件的动态特性；采用先进的电子辐照技术，通过试验优化辐照工艺，进一步改善了晶闸管静态参数与动态特性折衷关系；研究开发出6英寸5000 A/8500 V晶闸管，器件的所有静、动态参数达到设计指标，通过了可靠性试验，满足±1100 kV特高压直流输电换流阀的应用要求。
위만족국가±1100 kV특고압직류적응용수구，괄응환류벌용정갑관향경고전압등급、경대전류용량、경고가고성발전추세，기우중국남차현유6영촌정갑관성숙기술기출，통과계산궤방진여시험상결합적방법，우화정갑관심편결구설계，개선료정갑관심편변연전장분포화전압은정성，개선기건내부열분포여외부산열，제고료정갑관전류용량；우화정갑관심편방대문겁결구설계，개선료기건적동태특성；채용선진적전자복조기술，통과시험우화복조공예，진일보개선료정갑관정태삼수여동태특성절충관계；연구개발출6영촌5000 A/8500 V정갑관，기건적소유정、동태삼수체도설계지표，통과료가고성시험，만족±1100 kV특고압직류수전환류벌적응용요구。
To meet the demand of application in ±1 100 kV ultra-high voltage direct current (UHVDC) transmission and adapt to the development tendency of higher voltage, higher current capacity and higher reliability for the converter valve thyristors, based on the existed technology of 6-inch thyristor in CSR and using the method of computer simulation and trial production and test, the electric field distribution of thyristor chip edge, voltage stability, the device’s internal thermal distribution and external heat dissipation, as well as the thyristor current capacity have been improved by means of optimizing thyristor chip structure design. What is more, optimizing the design of thyristor chip’s amplifying gate improves the device’s dynamic characteristics. Furthermore, the trade-off between the thyristor static parameters and dynamic characteristics has been achieved when the advanced electron irradiation technology had been adopted and irradiation process had been optimized. The 6 inches 5 000 A/8 500 V thyristor devices, CSR researched and developed, meet all static and dynamic parameters and pass the reliability test, which can satisfy the application requirements of ±1 100 kV UHVDC converter valves.