本文描述了新型晶闸管FCT的结构和工作原理。介绍了四种不同场控晶闸管的设计考虑。指出,为了获得性能优良的FCT,必须采用隐埋栅与平面栅相结合的方法。文中还将场控晶闸管与普通晶闸管相比较,表明场控晶闸管具有电压高、电流大、速度快、高di/dt、高dv/dt和压降低等优点,因此必将在电力系统中得到广泛应用。 This article describes the structure and working principle of a new thyristor FCT. The design considerations for four different field-controlled thyristors are presented. Pointed out that in order to obtain good performance of the FCT, you must use a combination of buried gate and planar gate method. The article also compares field-controlled thyristor with ordinary thyristor, which shows that field-controlled thyristor has the advantages of high voltage, high current, high speed, high di / dt, high dv / dt and low voltage drop, application.