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 Thyristor driver |
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Common features:
 Adopt application specific integrated circui (ASIC) design
Phase-locked loop (PLL) synchnonization
Power frequency 50Hz/60Hz optional
0-5V or 4-20mA DC input control signal
The phase-shift of output pulse from 5°-175° adjustable
Output trigger pulse power can up to 15V / 2A
Two-quadrant or four-quadrant operation |
Application:
Two-phase bridge converter
Four-phase bridge converter
AC controller
Induction generator controller
Double reverse star rectifier |
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| PSHC digital thyristor driver |
Type
(PDF) |
Number
of
Channels
--
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Gate
voltage
VG
V |
Output
peak current
IoutPEAK
A |
Power
Frequency
Hz |
Isolation
voltage
Visol IO
kV |
| PSHC 2S00 |
2-Phase |
15 |
2 |
50 / 60 |
4 |
| PSHC 6S00 |
3-Phase |
15 |
2 |
50 / 60 |
4 |
| PSHC 12S00 |
6-Phase |
15 |
2 |
50 / 60 |
4 |
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PSHC6S00 general thyristor firing board is a kind of thyristor trigger system that designed with the corn technology of 40-pin CMOS application specific integrated circuit (ASIC).It applies phase-locked loop(PLL) and multi-chip module (MCM) and is base on the logic relationship between three-phase synchronous signal locked by the voltage control oscillator(VCO). It consist of phase reference(reference)circuit, buffer amplifier, soft start/stopf circuit, phase-locked loop, open-phase detection ,prohibited circuit, phase-sequence detection, select switch, monitoring circuit , pulse amplifier and pulse transformer. It has a 0-5V DC input voltage signal, can control the phase-shift of output pulse from 5°-175° adjustable. And any adjustor or manual output voltage can connect to with it easily (including the D/A signal by the computer) to control the operation of high power thyristor.The firing board form a good buffer interface between the adjustor or computer PID adjustment and the high power thyristor to ensure the safety of system when the adjustor are out of control.
The features of PSHC6S00 thyristor firing board are summarized in below:
With the three-phase trigger pulse being outputted by high frequency synchronous pulse, it has a high degree of symmetry ,balance and control linearity, overcoming many shortages of tradition simulation circuit.
The driver is synchronized with power network automatically by connecting the synchronous signal that gets from the high resistance R31-R33 directly with the main circuit of the thyristor(no seperate line), so it needs no synchronous transformer.It has matching automatic monitor ability to make the line between the main circuit and adjustor simple and reliable without any adjustment and measurement. And different resistance are adopted according to different main circuit line voltage of high resistance R31-R33 , we can see it from the table below: |
main circuit line voltage |
480VAC-280VAC |
280VAC-120VAC |
120VAC-24VAC |
sampling resistance |
2 MΩ |
1 MΩ |
220 KΩ |
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The firing board contains open-phase protection and soft turn-on and turn-off function, making it has a high degree of density, and no detection control circuit needed.
The firing board contains an 8-pull switch and different pulse can be get from different combinations. For example the initial reference phase of output pulse is 0° or 30°; modulation or non-modulation pulse, the modulation pulse is double 30°(that is 2-30°)pulse ,120° wide pulse or double narrow pulse(the interval is 60°).
The firing board can output a 12 gate pulse signal with a mutual difference of 30°easily by combining the main firing board and assistance firing board rather than use another independent gate delay generator. |
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