Gate Pulse Module Assembly (GPMA)

Regards.

Look the link if you could find some thing.

I am outdated in communication & Power-Electronics. The topic seem to be very new to me

Gate Turn-off (GTO) Thyristors <GTO>

Regards.

check:

http://ecoliwiki.net/colipedia/index.php/gpmA

Is it not PWM Power-Control?

A gate pulse module (GPM) or a gate pulse module assembly is in other words a driver card that provides two signals. One signal that is connected to the gate of the thyristor and the other signal to the cathode which provides power to the filter connected in parallel with the thyristor. I just wanted other opinions on the question I posed.

Regards.

There are different terms used in Thyrister control meaning the same.

It is also called GDA; Gate-Drive-Assembly.

It is in Inverters. Having the:

1. HFID Hi-Freq-Inverter-Drive. Produces sequence of pulses for all the Thyristers in an inverter*

2. GDA which Amplify [Power] to drive thyrister Gate. 1 per Thyrister. Will be 6 in a 3 Ph Inverter.

These are not filters but Spark-Quenching net-works across the Thyristers as are across a Switch.

For details how the thyristers are sequencially switched on & off see some text books

on the Inverter Design.

Have a good day

Regards.

I think that you have not considered an early post on GTO.

By chance if you see below last post on this page a link for GTO [Gate-turn-off-Thyrister]

The gate signal of a thyristor is a simple pulse that starts the cascade of current rushing through the thyristor. Once a thyristor gets turned on, the thyristor stays on until no more current flows from anode to cathode. (One of these days I just might find a nice, cheap schematic capture program. so I can draw a pretty picture instead of just using words.) Typically the Thyristor is not at any constant, fixed voltage but the voltage drop across the gate to cathode of the Thyristor must exceed the junction bias (nom. 1V) of the PN junction. So the gate signal must float in comparison to gate generating electronics. Typical techniques to do this are capacitor, transformer and optical coupling. Depending on how high the voltage and/or current that flow through the Thyristor, either method may require some ancillary circuitry in this module assembly to prevent false triggers and circuit protection.

The basic purpose of a gate pulse module is to produce a fast rising trigger pulse or pulses to ensure positive operation of the SCR. This is very important in high speed operation of SCRs to avoid shorting of SCR bridges.

The gate pulse module is controlled by various control inputs from circuits which are monitoring the overall operation of the power unit that the SCRs are driving.

Try this link for some basic information.

The Silicon-Controlled Rectifier (SCR) : THYRISTORSThe Gate-Turn-Off thyristor is also known by the name of Gate-Controlled Switch, .... By connecting a suitable control circuit to the gate of an SCR, ...
www.allaboutcircuits.com/vol_3/chpt_7/5.html - 30k - Cached - Similar pages

Thank you Garth.