Siemens SIMADYN D - PC6, Firing Angle Controller

Closed-loop thyristor current control
5-42 System- and communication configuring D7-SYS - SIMADYN D
Edition 06.2002
5.2.8 PC6, firing angle controller
Hardware address
Mode:7kHz/long pulses
Inverter control limit [
°
]
Rectifier control limit [
°
]
Main pulse length [ms]
Second pulse length [ms]
Time value firing pulse output
Time value PA6 start
Enable firing angle controller
60° value [16 MHz]
Firing angle actual value [ASG]
Firing angle setpoint [ASG]
Test: Firing angle setpoint [
°
]
Shift to inv. op.: Firing angle setpoint [
°
]
>Rect./TA max. angular change [
°
]
>Inv./TA max. angular change [
°
]
Tolerance pulse pos. from pos. error
#Error DIL
Control word
Mode, double firing
Handshake CAV
GV
BO
R
R
TS
TS
DI
DI
BO
DI
R
R
R
R
R
R
R
DI
W
BO
BO
A
D
LPD
LDU
LDL
LMP
LFP
CTH
CTS
EN
X6R
XAS
WAS
A
QL
A
WS
DAG
DAW
DIL
DIZ
ICC
DZ
A
CI
PC6
TCP
ACA
ZPA
ZZA
ZLA
ZXA
WAF
YEA
DZM
ZAH
ACO
QSF
TS
R
I
I
I
I
R
R
BO
W
BO
W
Process. time all FB [ms]
Process. time FB[
°
]
Firing pulse No. {1...6}
Firing pulse adjust. No.
Diag.:Status "double firing state mach."
Diag.:Pulse pos. error generation, status
A
ngular setpoint
System deviation, firing angle controller
Double firing active
Control HW ITDC
Handshake EMF
Fault
Fig. 5-23 PC6 represented in the CFC
The PC6 function block (Pulse Controller 6-pulse) is used to implement a
"Dead-beat" controller and the firing pulse generation for a 6-pulse line-
commutated converter for a fully-controlled bridge B6C or two fully-
controlled bridges in a circulating-current free, anti-parallel circuit
configuration B6(A)B6(C).
Various firing angle setpoints are used, depending on the operating
mode, entered from the switch-over logic stage.
• Closed-loop controlled operation (SOL.ISE = 0)
• Shift to inverter operation (SOL.QPI = 1)
• Open-loop controlled operation (SOL.ISE = 1
=
ˆ
test
operation)
The firing pulses for the thyristors of the SITOR set are generated on the
ITDC according to the specifications of FB PC6.
The firing pulses are output as 7[kHz] pulse chains (standard) or as long
pulses.
FB PC6 is always calculated as the last block in an interrupt task in
synchronism with the firing pulses.
Function