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. Comparison of IGCT and IGBT for the use in the. Modular Multilevel Converter for HVDC applications. Martin Buschendorf, Jens Weber, Steffen Bernet. As power semiconductor devices are the key components of hybrid DC circuit breakers (HCBs), how to select suitable devices is critical for the whole HCB de.
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Reverse blocking capability adds to the forward voltage drop because of the need to have a long, low-doped P1 region. Usually, the reverse blocking voltage rating and forward cs voltage rating are the same.
Integrated gate-commutated thyristor
An IGCT is a special type of thyristor. It is related to the gate turn-off GTO thyristor. They typically have a reverse breakdown rating in the tens of volts. This results in a complete elimination of minority carrier injection from the lower PN junction and faster turn-off times.
From Wikipedia, the igft encyclopedia. The integrated gate-commutated thyristor IGCT is a power semiconductor electronic device, used for switching electric current in industrial equipment.
Integrated gate-commutated thyristor – Wikipedia
Multiple IGCTs can be connected in series or in parallel for higher power applications.
GTO vs IGCT vs IGBT | difference between GTO,IGCT,IGBT
The close integration of the gate unit with the wafer device ensures fast commutation of the conduction current from the cathode to the gate. 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 main applications are in variable- frequency invertersdrives and traction.
The large contact area and short distance reduce both the inductance and resistance of the connection. The IGCT’s ogct 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.
The wafer device is similar to a gate turn-off thyristor GTO. Views Read Edit View history.
In an IGCT, the gate turn-off current is greater than the anode current. The ivbt circuit surrounds the device and a large circular conductor attaching to the edge of the IGCT is used.
Gate drive electronics are integrated with the thyristor device. IGCT are available with or without reverse blocking capability.
This page was last edited on 22 Novemberat Retrieved from ” https: Asymmetrical IGCTs can be fabricated with a reverse conducting diode in the same package. A-IGCTs are iigct where either a iyct conducting diode is applied in parallel for example, in voltage source inverters or where reverse voltage would never occur for example, in switching power supplies or DC traction choppers.
It was jointly developed by Mitsubishi and ABB.
The typical application for symmetrical IGCTs is in current source inverters.