Description
ABB 5SHY3545L0020 Power exciter control module
Integrated gate commutated thyristor (IGCT)
Intergrated Gate Commutated Thyristors Intergrated gate commutated thyristors
It was proposed by ABB in 1997. The device is formed by integrating gate drive circuit and gate commutator thyristor GCT into a whole. GCT is a new type of power semiconductor device based on GTO structure. It not only has the same high blocking ability and low on-state voltage drop as GTO, but also has the same switching performance as IGBT, that is, it is the result of GTO and IGBT complementing each other. It is an ideal MW-level and medium-voltage switching device. Ideal for use in 6kV and 10kV medium voltage switching circuits.
The main advantages are:
IGCT has the characteristics of large current, high blocking voltage, high switching frequency, high reliability, compact structure, low on-off loss, low manufacturing cost, high yield, and has a good application prospect.
The structure and working principle of IGCT
1. Classification of IGCT
According to the internal structure, IGCT can be divided into the following three categories:
(1) Asymmetric type
In the structure is a simple PNPN thyristor structure, the device can withstand high voltage forward, but does not have the ability to withstand reverse voltage, and can not flow reverse current. Generally requires a parallel continuation diode from the outside.
(2) Reverse blocking (Reverse blocking)
In the structure is a series of PNPN thyristors and a diode, the current can only flow from one direction (from the anode to the cathode), the series of secondary tubes for such devices to provide the ability to withstand reverse voltage.
(3) Reverse conducting (Reverse conducting)
In the structure is - a PNPN thyristor and - a continuous diode in reverse parallel, the current can flow in both directions, can not withstand the reverse voltage. Because the GCT and the continuous current diode are integrated on the same chip, there is no need to parallel the continuous current diode from the outside, and the converter is more concise in structure and smaller in volume.
One year warranty, special discount after sale
The company focuses on DCS, PLC, robot, large servo four systems
The main products are all kinds of module/card, controller, touch screen, servo drive
The company's advantages: the supply of imported original products, professional production of accessories
Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory
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