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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Integrated gate-commutated thyristor ： ウィキペディア英語版 Integrated gate-commutated thyristor The integrated gate-commutated thyristor (IGCT) is a power semiconductor electronic device, used for switching electric current in industrial equipment. It is related to the gate turn-off (GTO) thyristor. It was jointly developed by Mitsubishi and ABB. Like the GTO thyristor, the IGCT is a fully controllable power switch, meaning that it can be turned both on and off by its control terminal (the gate). Gate drive electronics are integrated with the thyristor device.〔Eric Carroll, "IGCTs: Moving on the Right Track", ''Power Electronics Technology'', Aug 1, 2002 (), retrieved on January 8, 2010.〕 ==Device description== An IGCT is a special type of thyristor similar to a gate turn-off thyristor (GTO). They can be turned on and off by a gate signal, have lower conduction loss as compared to GTOs, and withstand higher rates of voltage rise (dv/dt), such that no snubber is required for most applications. The structure of an IGCT is very similar to a GTO thyristor. In an IGCT, the gate turn-off current is greater than the anode current. This results in a complete elimination of minority carrier injection from the lower PN junction and faster turn-off times. The main differences are a reduction in cell size, and a much more substantial gate connection with much lower inductance in the gate drive circuit and drive circuit connection. The very high gate currents and fast dI/dt rise of the gate current mean that regular wires can not be used to connect the gate drive to the IGCT. The drive circuit PCB is integrated into the package of the device. The drive circuit surrounds the device and a large circular conductor attaching to the edge of the IGCT is used. The large contact area and short distance reduce both the inductance and resistance of the connection. The IGCT's much faster turn-off times compared to the GTO's allows it to operate at higher frequencies—up to several kHz for very short periods of time. However, because of high switching losses, typical operating frequency is up to 500 Hz. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Integrated gate-commutated thyristor」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.