Power fast modulator thyristors

Fast power silicon thyristors are very promising for power modulators, but they have some drawbacks preventing their wide use. The main drawbacks are: instability of uniform current distribution which could lead to current localization (filamentation of current) and to burnout of the device under hi...

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Main Authors: Brylevsky, V.I., Efanov, V.M., Kardo-Sysoev, A.F., Smirnova, I.A., Tchashnicov, I.G.
Format: Conference Proceeding
Language:English
Subjects:
Anodes
Current density
Current distribution
Doping
Fingers
Instruction sets
Shape
Silicon
Thyristors
Voltage
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creator Brylevsky, V.I.
Efanov, V.M.
Kardo-Sysoev, A.F.
Smirnova, I.A.
Tchashnicov, I.G.
description Fast power silicon thyristors are very promising for power modulators, but they have some drawbacks preventing their wide use. The main drawbacks are: instability of uniform current distribution which could lead to current localization (filamentation of current) and to burnout of the device under high currents; turn on time depends on the thickness of base layers and as well on maximum voltage. High voltage thyristors have longer turn on times. So to turn on high voltage during short time it is necessary to connect many low voltage fast devices in series. In this case the main question, which should be answered is on how to synchronize all thyristors. The objective of the paper is to show how to overcome these drawbacks.
doi_str_mv 10.1109/MODSYM.1996.564444
format conference_proceeding
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subjects Anodes
Current density
Current distribution
Doping
Fingers
Instruction sets
Shape
Silicon
Thyristors
Voltage
title Power fast modulator thyristors
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