Power Supply System

John JosephLBNL

Spectrometer Solenoid Test Plan Review

Feb 17th 2012

Simplified PS System Block Diagram

Page 2

Power Supply Slow Control

System

Quench Detect System

• Slow Control Functions• Ramp Rates• Contactor switching

for ramp cycles• Status Monitoring

• Voltage• Current• Temperature

• Direct control of all PS Units

•QDS Functions• Real time Quench

Detection• Contactor switching

for fast discharge• Real time system

status monitoring

Magnet Coil Power Supply

Rack

Power Supplies for the

Center Coil &Matching Coils

Primary PS Rack Components and Loads

Page 3

Page 4

Wang NMR System: DC SIGNAL PATH & Control

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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

K3EEC225 - 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-BCHA 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

CENTERRc=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

DA3DISCHA RGE

8 DIODEABSORBER

P1

P2

CS3

PS CONTROLLERO U T +

O U T -

CRYOSTAT

TBD

K5EEC225 - 315A

TBD

DA4CHA RGE

8 DIODEABSORBER 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-BCHA RGEABSORBER3 DIODE

P 3

P 4

DA 1 L=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-ADISCHA RGEABSORBER3 DIODE

P 1

P 2

V TM06FTP-F

1

R4

0.008

DA 2-ADISCHA RGEABSORBER3 DIODE

P 1

P 2

R3

0.008

R2

0.008

R1

0.008

LBNL/MICE: DC PATH [As Built]

• Added 5 contactors to system– HTS Lead protection during fast discharge

Energy Absorber Assemblies

Plumbing for Water Cooling

of Energy Absorbers

• 4 Energy Absorbers – Required for slow ramp down

of coils– 2 diode assemblies per

absorber circuit• 1 DA always dissipating power

into air & water– 2 water circuits available for

cooling

POWER SUPPLY RACK CONFIGURATION

MS2 300A PS

MS1 300A PS

EC1 60A PS

EC2 60A PS

CS 60A PS

EA - DA3EA - DA4EA - DA2EA - DA1

K2

K1

K7

K8

K3

K6

FRONT VIEW

• Redesigned system to improve HTS Lead protection– Additional contactors to isolate coils from power supplies

during fast ramp down and enable in-cryo coil protection– Adding 2nd Solid State Relay to handle increased Contactor

pickup current• Reconfigured rack to optimize DC cabling

– Improved physical separation of AC and DC wires– All Contactors physically close to associated supplies

• Moved all AC wiring above water cooling circuits• Replacing 15 VDC PS with 24 VDC PS for interlock

circuits• Replaced all control and monitoring wiring

– Bundled twisted pair

Summary of Changes Implemented @ LBL

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SCHEMATIC: SIMPLIFIED CONTACTOR CONTROL

A

1 1Thursday, February 16, 2012

PS624V DC PS

SW 1THERMA L SW DA 1 SW 2

THERMA L SW DA 2

SW 3THERMA L SW DA 3 SW 4

THERMA L SW DA 4

SSR1CW 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 1208 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

SSR2CW 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

Power Entry, Control, and MonitoringTB1

208 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

• Rewire Temp Sensors to move over-temp reaction control to Slow or Fast DAQ– Overheating of Energy Absorbers should be slow ramp down

not fast discharge

• Add Emergency Off switch to front and back of racks

• Contactor Aux Contacts indicate– All Contactors closed– One or more Contactors open

• Currently only indicates if all are open

Additional Changes per Collaboration Discussion

• Loads on 3 Phase 208 VAC– 300A Power Supply for the Center Coil (15A @ 3.3kW)– 300A Power Supply for Matching Coil 1 (80% efficiency min)– 300A Power Supply for Matching Coil 2 (80% efficiency min)

• Loads on Single Phase 208 VAC– 6 Contactor Coils requiring 970VA for Pickup– 2 Contactor Coils requiring 245VA for Pickup– 24VDC, 60 Watt, Power Supply for system Interlock circuits

• Loads on 120 VAC– 60A Trimming Power Supplies for the End Coils (Qty 2)

• 850 VA per Unit– Power Supply Controllers for the 300A Units (Qty 2)

• 50 VA per Unit

Power Requirements for Test

• Complete remaining assembly tasks on the rack to be used at Wang– Implement RAL recommendations

• Complete the final Documentation package– Final Schematics & Wire Lists– Configuration Drawing

• Low Current Functionality Testing of all System Components– Avoid connecting water circuits– Load PS outputs with shorting cables

• Decision on Assembly of 2nd Power Supply Rack– Requested to go directly to RAL– New rack configuration is under consideration

Tasks to Complete