5SHY4045L0004 3BHB021400R0002 ABB 门极换流晶闸管

5SHY4045L0004 3BHB021400R0002是一款门极换流晶闸管（IGCT，Integrated Gate-Commutated Thyristor）是一种结合了门极可关断晶闸管（GTO）和集成门极驱动器的优点的高性能电力电子器件。它是ABB公司于1996年发明的，基于GTO进行改进的新型电力电子器件。

IGCT在GTO体内引入缓冲层，并将GTO与门极控制电路集成在一起，具有许多优点，如高可靠性、高开关速度、低损耗和低驱动电流等。因此，IGCT被广泛应用于高压直流输电（HVDC）、灵活交流输电系统（FACTS）和电机控制等领域。

IGCT的工作原理是，在正常工作状态下，门极换流晶闸管相当于一个关断的开关。当在门极上施加正向触发脉冲时，门极换流晶闸管开通，电流开始流过器件。当需要关断器件时，通过门极施加反向电压或电流，使得器件内部的电荷平衡被打破，从而实现快速关断。

目前，全球只有瑞士ABB、日本三菱和中国南车等少数几家公司生产和研发IGCT产品。随着电力电子技术的不断发展，IGCT将会在更多领域得到应用，为电力系统的智能化和高效化做出贡献。
 
5SHY4045L0004 3BHB021400R0002 is a gate commutated thyristor (IGCT, IGCT, IGCT). Integrated gate-commutated Thyristor (GTO) is a high-performance power electronics device that combines the benefits of Gate Commutated Thyristor (GTO) and Integrated Gate driver. It is a new type of power electronic device based on GTO, invented by ABB in 1996.

IGCT introduces a buffer layer in the GTO body and integrates the GTO with the gate control circuit, which has many advantages, such as high reliability, high switching speed, low loss and low drive current. Therefore, IGCT is widely used in high voltage direct current transmission (HVDC), flexible AC transmission systems (FACTS) and motor control.

The working principle of IGCT is that the gate commutated thyristor acts as an off switch under normal operating conditions. When a forward trigger pulse is applied on the gate, the gate commutator thyristor opens and current begins to flow through the device. When the device needs to be turned off, a reverse voltage or current is applied through the gate, so that the charge balance within the device is broken, thus achieving a fast shutdown.

At present, only a few companies in the world, such as Switzerland's ABB, Japan's Mitsubishi and China CSR, produce and develop IGCT products. With the continuous development of power electronics technology, IGCT will be applied in more fields and contribute to the intelligent and efficient power system.