lbds power triggering etienne carlier & jean-louis bretin ab/bt/ec
TRANSCRIPT
LBDS
Power Triggering
Etienne CARLIER & Jean-Louis BRETIN
AB/BT/EC
LBDS Outline
• Architecture• Power Trigger Unit
– Block diagram– Characteristics
• Power Trigger Module– Circuit– Signals
• Protection• Power Trigger Controller
– State– Signals
• Re-triggering
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS
Fault-tolerantFail-safe
Trigger Synchronisation & DistributionArchitecture
Re-trigger lines
Branch A
BranchB
BranchA
BranchB
Generator 1
Generator 15
TFO
TFO
Trigger Fan-out
PTU
PTU
PTU
PTU
Power Trigger
Unit
RTB
RTB
RTB
RTB
Re-trigger Box
RTD
TSU
TSUClient Interface
Frev
Trigger Synchronisation
Unit
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS Power Trigger UnitBlock Diagram
DriverMain
Compensation
Controller
Power Supplies
+5V±15V+48V±150V
+3000V
PTM (Power Trigger Module)
DriverMain
Compensation
PTM (Power Trigger Module)
PTC (Power Trigger Controller)
Inputs
Trig 1Trig 2
Re-Trig 1Re-Trig 2Soft Trig
Etienne CARLIER, LBDS Audit – 28/01/2007
PTU (Power Trigger Unit)
LBDS Power Trigger UnitCharacteristics
• Two independent « power » outputs– One power output is able to trigger one branch of one generator– 2 power outputs can be operated in parallel
• Single output trigger pulse for principal and compensation circuits– Variable voltage for principal circuit (generator turn-on delay compensation)– Fixed voltage for compensation circuit
• 5 different trigger inputs– 2 redundant normal inputs– 2 redundant re-trigger inputs– 1 soft trigger
• Full monitoring via PROFIBUS-DP– Static mode SCSS– Pulse mode IPOC
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS Power Trigger ModuleCircuit
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS Power Trigger ModuleSignals
• Operating range: 600 V to 3 kV• Maximum output current 275 A• 2.5 µs pulse duration• No turn-on jitter
Etienne CARLIER, LBDS Audit – 28/01/2007
• Operating voltage: -150 V• Mean output current: 75 A• Pulse duration > 400 µs
PRINCIPAL CIRCUIT TRIGGER COMPENSATION CIRCUIT TRIGGER
LBDS Triggering CircuitProtection
Trigger HV Transformer
Main Switch
Compensation Switch
PTM
PTM
Etienne CARLIER, LBDS Audit – 28/01/2007
HV Diode to protect redundant PTM in case of short-circuit at the output of the other module
Tri-axial cable for EMC protection
Single triggering transformer for principal and compensation circuit no incoherent kick
LBDS MonitoringState Diagram
Etienne CARLIER, LBDS Audit – 28/01/2007
FAULTY
OK
STATIC MODE
READY
DATAVALID
DATACHECK
TriggerArm
PULSE MODE
LBDS MonitoringSignals
• State• High voltage
– Control– Status
• Low voltage– +15V – +48V – +150V
• Watchdog status• Soft-trigger status
Etienne CARLIER, LBDS Audit – 28/01/2007
• Trigger inputs– Trig IN1 & IN2– Re-Trig IN1 & IN2– Soft Trigger
• Driver circuits– PTMA & PTMB
• Re-trigger box inputs• Output pulse waveform
analysis– Primary voltage– Primary current– Secondary current
STATIC MODE PULSE MODE
LBDS Pictures
Power SuppliesPower Trigger Controller
Power Trigger ModulePower Trigger Unit
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS
Fault-tolerantFail-safe
Trigger Synchronisation & DistributionArchitecture
Re-trigger lines
Branch A
BranchB
BranchA
BranchB
Generator 1
Generator 15
TFO
TFO
Trigger Fan-out
PTU
PTU
PTU
PTU
Power Trigger
Unit
RTB
RTB
RTB
RTB
Re-trigger Box
RTD
TSU
TSUClient Interface
Frev
Trigger Synchronisation
Unit
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS Re-TriggeringSensors
Etienne CARLIER, LBDS Audit – 28/01/2007
Re-trigger Line A
Re-trigger Line B
I
I
I
I
V
V
I : CurrentV: Voltage
LBDS Re-triggering BoxPrinciple
Etienne CARLIER, LBDS Audit – 28/01/2007
To Power Trigger Unit
From Sensors
LBDS Re-TriggeringCharacteristics
• Fully passive fault tolerant system– Complete post-mortem analysis after each dump action
• All the power needed to re-trigger the complete extraction kicker system is available directly from the sensors– Current pick-ups– High voltage dividers
• Re-trigger delay is due to – Detection time– Propagation time over the 14 remaining generators– Power trigger turn on delay– Main switch turn on delay
Etienne CARLIER, LBDS Audit – 28/01/2007
LBDS Re-triggeringHardware
Etienne CARLIER, LBDS Audit – 28/01/2007
Re-Trigger Box