MICE Power Supply System John Joseph LBNL Spectrometer Solenoid Controls & Monitoring Review Dec 11...
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MICE Power Supply System John Joseph LBNL Spectrometer Solenoid Controls & Monitoring Review Dec 11 th 2012
Transcript of MICE Power Supply System John Joseph LBNL Spectrometer Solenoid Controls & Monitoring Review Dec 11...
MICE
Power Supply System
John JosephLBNL
Spectrometer Solenoid Controls & Monitoring Review
Dec 11th 2012
Simplified System Block Diagram
Page 2
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SCHEMA TIC - MICE MA GNET POW ER SUPPLY SY STEM
B
1 1Thurs day , February 16, 2012
20V @ 300APOW ER SUPPLY
PS3
POW ER TEN 300A PS
O U T +
O U T -
D03
K3
EEC225 - 315A
K4EEC225 - 315A
TBD
+/-5V @ +/-60A
+/-5V @ +/-60A
K2CONTA CTOR
1 1
K8EEC50-A [80A ]
FA ST DISC HA RGESW IT C H
FA ST DISC HA RGESW IT C H
FA ST DISC HA RGESW IT C H
R6200140XX00
DA 2-B
CHA RGEABSORBER3 DIODE
P 3
P 4
XPR20-300
XPR20-300
100
TRIM E1
LA KESHORE 625O U T +
O U T -
100
TRIM E2
LA KESHORE 625O U T +
O U T -
A MI 420
L=12.9HEND 2
Rc=111
L=43.8H
CENTER
Rc=195
Rc=203
A MI 420
L=10.5HEND 1
Rc=100
1 1
K1CONTA CTOR
A MI 420
P63C-20330
V TM07FTP-G
1
V TM08FTP-H
1
1 1
11
V TM09FTP-J
1
1
V TM05FTP-E
1
HT S L EA DPROT EC T ION
V TM01FTP-A
1
V TM04FTP-D
1
HT S L EA DPROT EC T ION
HTS LEA D - E1
HT S L EA DPROT EC T ION
DA 2
V TM02FTP-B
1
TBD
K7EEC50-A [80A ]
1 1TBD
HT S L EA DPROT EC T ION
HTS LEA D - F
11 HTS LEA D - G
HTS LEA D - H
HT S L EA DPROT EC T ION
L=6.8HMATCH 2
Rc=85
1 1
HTS LEA D - C
HTS LEA D - D
R9
0.008
R8
0.008
K6
EE
C22
5 -
315A
DA3
DISCHA RGE
8 DIODEABSORBER
P1
P2
CS3
PS CONTROLLERO U T +
O U T -
CRYOSTAT
TBD
K5EEC225 - 315A
TBD
DA4
CHA RGE
8 DIODE
ABSORBER P 1P 2
R5
0.008
10 Ohm / 50W
20V @ 300APOW ER SUPPLY
PS2
XA NTREX 300A PS
O U T +
O U T -
D02
CS2
PS CONTROLLERO U T +
O U T -
10 Ohm / 50W
DA 1-B
CHA RGEABSORBER3 DIODE
P 3
P 4
DA 1L=15.7HMATCH 1
Rc=136
V TM03FTP-C
1
HTS LEA D - A
HTS LEA D - B
R7
0.008
R6
0.008
20V @ 300APOW ER SUPPLY
PS1
XA NTREX 300A PS
O U T +
O U T -
D3
CS1
PS CONTROLLERO U T +
O U T -
10 Ohm / 50W
DA 1-A
DISCHA RGEABSORBER3 DIODE
P 1
P 2
V TM06FTP-F
1
R4
0.008
DA 2-A
DISCHA RGEABSORBER3 DIODE
P 1
P 2
R3
0.008
R2
0.008
R1
0.008
LBNL/MICE: DC PATH [As Built]
TDK/LambdaGenesys Series20V @ 500A
Energy Absorber Assemblies
• Energy Absorbers – Required for slow ramp down of
coils– 2 absorber assemblies per
power supply circuit• 1 EA always dissipating power
into air & water
O U T
I N
D02 D01
D03D04
D05 D06
D07D08
D09D10
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SCHEMATIC: SIMPLIFIED CONTACTOR CONTROL
A
1 1Thursday, February 16, 2012
PS624V DC PS
SW 1
THERMA L SW DA 1 SW 2
THERMA L SW DA 2
SW 3THERMA L SW DA 3 SW 4
THERMA L SW DA 4
SSR1
CW D2425
43
12
K1
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
TB3
1
TB3
1
TO CONTROL SYSTEM
K2
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
K3
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
TB1 1
TB1 1
208 VAC1 PHASE
SSR1 & SSR2LOA D: 280V A C OR 25ACOIL: 4 to 32V DC
K4
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
K5
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
K6
EE
C225-C
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
K7
EE
C50-A
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
K8
EE
C50-A
A 1
A 2
V 1 V 2
5 3 5 46 1 6 2
EEC225-CCOIL: 208V A CPICK UP: 970V A /DEVHOLD IN: 55V A /DEV
SSR2
CW D2425
43
12
14A - IN RUSH
16A - IN RUSH
• Requires 2nd Solid State Relay– ~35A of in-rush when coils energized
to close contactors
•Replacing 15 VDC PS with 24 VDC PS– Standard for Interlock systems– Requested by RAL
•Potential to stagger Contactor on signal to reduce instantaneous power peak
Prestemon – Pan September 13, 2011
Spectrometer solenoid quench protection Page 6
Review of Spectrometer protection circuit
Prestemon – Pan September 13, 2011
Spectrometer solenoid quench protection Page 7
Protection circuit: test condition example
• Circuit with most stored energy• If a quench occurs in E1:
– Current shunts via diode+resistor across E1– Coil current in E1 decays– Coil currents in neighboring coils increase
• Due to mutual inductance• Generate bypass currents
– Other coils either…• Quench - very likely, due to quenchback• Remain superconducting
– Unlikely except for very low-current quench, when» significant margin is available » Energy in quenched coil is insufficient to boil off stored helium
– Current continues to decay due to bypass resistance, but with very long time constant
Power Entry, Control, and Monitoring
TB1208 VAC 3-
PHASE Power Entry
TB4Status Monitoring
SSR, TB3, PS6Interlock & Contactor Control
TB2PS Voltage Monitoring
TB4Status
Monitoring
K1 - VDROP K2 – VDROP
K3 – VDROP
K4 - VDROP K5 - VDROP K6 - VDROP K7 - VDROP K8 – VDROP
CONTACT STATUS PS TEMP SENSORS
POWER SUPPLY RACK CONFIGURATION
MS2 300A PS
MS1 300A PS
EC1 60A PS
EC2 60A PS
CS 500A PS
EA - DA3
EA - DA4
EA - DA2
EA - DA1
K2
K1
K7
K8
K3
K6
FRONT VIEW
• Prior to the next Magnet Training test…• Replace the main coil power supply unit, a Power Ten 20V, 330 Amp unit,
with a new TDK/Lambda Genesys series 20V, 500 Amp unit. • Validate calibration information programmed into all AMI-420
Controller/Power Supply pairs– Firm requirement for the new TDK-Lambda unit
• Install shunts to provide alternative coil current monitoring points– Data Acquisition using Keithley scanning Digital Multimeter– Read out over RS-232 to C&M system
• Reconfigure the AC input power for all rack electronics to operate on 208 VAC– Lakeshore 625 end coil trimming power supplies– AMI-420 Controllers– Keithley 2700 Scanning, to operate using 208 VAC single phase
• Full test of trimming power supply operation into short circuit– We need to verify that the Lakeshore PS can sink up to 45 Amperes acting as a
bypass for the 2 end coils that need to run at a lower operating current than the center coil.
Proposed System Upgrades & Tasks
