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3BHB021400R0002是ABB的一款集成門(mén)極換流晶閘管（IGCT）和集成門(mén)極驅(qū)動(dòng)電路的合稱，它具有GTO高阻斷能力和低通態(tài)壓降，以及和IGBT相同的開(kāi)關(guān)性能，被廣泛應(yīng)用于大功率中壓變流器。

這種晶閘管的特點(diǎn)在于其具有GTO高阻斷能力和低通態(tài)壓降。它也具備和IGBT相同的開(kāi)關(guān)性能，這使得它成為一種理想的兆瓦級(jí)、中壓開(kāi)關(guān)器件。

在關(guān)斷狀態(tài)下，IGCT門(mén)--陰極間的pn結(jié)提前進(jìn)入反向偏置，并有效地退出工作，整個(gè)器件呈晶體管方式工作。此時(shí)，如果通過(guò)打開(kāi)一個(gè)與陰極串聯(lián)的開(kāi)關(guān)(通常是MOSFET)，使P基極n發(fā)射極反偏，IGCT就會(huì)迅速阻止陰極注入，將整體的陽(yáng)極電流強(qiáng)制轉(zhuǎn)化成門(mén)極電流(通常在lμs內(nèi))，這樣便把GTO轉(zhuǎn)化成為一個(gè)無(wú)接觸基區(qū)的PNP晶體管，消除了陰極發(fā)射極子收縮效應(yīng)。這樣，它的大關(guān)斷電流比傳統(tǒng)GTO的額定電流高出許多。

3BHB021400R0002 is a combination of ABB integrated gate commutated thyristor (IGCT) and integrated gate drive circuit. It has GTO high blocking capability and low on-state voltage drop, as well as the same switching performance as IGBT, and is widely used in high-power medium-voltage converters.

This thyristor is characterized by its high GTO blocking capability and low on-state voltage drop. It also has the same switching performance as the IGBT, making it an ideal megawatt-class, medium-voltage switching device.

In the off state, the pn junction between IGCT gate and cathode enters the reverse bias in advance and exits effectively, and the whole device works in transistor mode. At this point, if the p-base n emitter is reversed by turning on a switch in series with the cathode (usually a MOSFET), the IGCT will quickly prevent the cathode injection, forcing the overall anode current into a gate current (usually in lμs), thus transforming the GTO into a contact-free base PNP transistor. The contraction effect of cathode emitter is eliminated. As a result, its cut-off current is much higher than the rated current of a conventional GTO.

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