Transcript ATF2 Project HA Power Supplies Demonstration

ATF2 Project HA Power Supplies
Demonstration System Evaluation Criteria
And
Status as of February 23, 2006
Paul Bellomo and Briant Lam
February 23, 2006
HA Power Supplies - Demonstration Criteria and Status
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Demonstration Criteria
Build a power system with Ethernet control that will provide 150A in a 3 out 4
redundant module configuration. Demonstrate performance, redundancy and
current sharing
February 23, 2006
HA Power Supplies - Demonstration Criteria and Status
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Rack and Power System Layouts
480V, 3 F
48X
47X
46X
45X
44X
43X
42X
41X
40X
39X
38X
37X
36X
35X
34X
33X
32X
31X
30X
29X
28X
27X
26X
25X
24X
23X
22X
21X
20X
19X
18X
17X
16X
15X
14X
13X
12X
11X
10X
9X
8X
7X
6X
5X
4X
3X
2X
1X
120V, 1 F
480V, 3 F
480V, 3 F
AC Distribution
Main and
2 – 30A Circuit Breakers
AC Distribution
Main and
2 – 30A Circuit Breakers
Transductors
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
120V, 1 F
480V, 3 F
480V, 3 F
120V, 1 F
AC Distribution
Main and
2 – 30A Circuit Breakers
AC Distribution
Main and
2 – 30A Circuit Breakers
AC Distribution
Main and
2 – 30A Circuit Breakers
Transductors
Transductors
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
Spare Controller
Spare Controller
Transductors
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
S
M Quad PS
3kW
M Quad PS
3kW
M Quad PS
3kW
M Quad PS
3kW
M Quad PS
3kW
M Quad PS
3kW
E Quad PS 3kW
S
E Quad PS 3kW
FF Dipole PS 4kW
E Quad PS 3kW
E Quad PS 3kW
FF Dipole PS 4kW
E Quad PS 3kW
E Quad PS 3kW
FF Dipole PS 4kW
E Quad PS 3kW
E Quad PS 3kW
FFSex
1kW
FFSex
1kW
FFSex
1kW
FF Oct
1kW
30V, 400A Bulk
Power Supply
30V, 400A Bulk
Power Supply
February 23, 2006
30V, 400A Bulk
Power Supply
30V, 400A Bulk
Power Supply
S
S
S
FF Sex
1kW
FF Sex
1kW
FF Oct
S
1kW
AC Distribution
Main and
2 – 30A Circuit Breakers
S
Transductors
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
Spare Controller
S
480V, 3 F
S
S
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
S
S
S
S
Transductors
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
PS Controller
Spare Controller
S
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
30V, 400A Bulk
Power Supply
30V, 400A Bulk
Power Supply
30V, 400A Spare
Bulk Power Supply
30V, 400A Bulk
Power Supply
30V, 400A Chicane
Power Supply
30V, 400A Bulk
Power Supply
HA Power Supplies - Demonstration Criteria and Status
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
FF Q
1kW
Space
30V, 400A Bulk
Power Supply
3
System Block Diagram
AC Power
Global
Control
Cooling
Water
Ethernet
Controller
Reg V
Source
Note that the demonstration
system might not include all the
elements shown in this block
diagram
4 Power Modules
Transductor
Power Cables
Magnet
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HA Power Supplies - Demonstration Criteria and Status
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Availability Improvement By Oversizing and Redundancy
Power
Module
PR=1/3PL
PO=1/4PL
PO=3/4PR
Power
Module
PR=1/3PL
PO=1/4PL
PO=3/4PR
Power
Module
PR=1/3PL
PO=1/4PL
PO=3/4PR
Power
Module
PR=1/3PL
PO=1/4PL
PO=3/4PR
Load =
PL
February 23, 2006
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Test Parameters and Success Criteria
Evaluated Parameter
Success Criteria
Rated load current from redundant
configuration
150A regulated output from either 4 modules or 3
modules
Load current sharing
≤ 5% current mismatch from 3 or 4 modules at
100% and 25% rated output
Redundancy
Loss of one module, system recovers current
within 1 millisecond
Current stability versus time and temperature
≤ 3 ppm drift in 10 minutes, monitor DT
≤ 10 ppm drift in 8 hours, monitor DT
Bandwidth
≥ 10Hz by Bode plot
Ethernet control
New Ethernet controller
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Status as February 23, 2006
• Presently operating and evaluating five parallel-connected power modules
under closed loop control under BitBus control
• Operating with phase-shifted input PWM signals to increase effective switching
frequency and reduce output ripple.
• Operating to a combined 100A of load current while monitoring individual
power module output current and output ripple voltage. Observed nicely
balanced currents in the power modules.
• Correlated load current sharing to the precision of match among the five phaseshifted PWM signals.
• Simulated a failure of one power module by disabling the PWM signal to one
power module during five power module operation to 100A,. Observed a redistribution of load current among the remaining four operating power modules.
This indicates that the redundancy scheme is feasible.
• Confirmed the expected increase in output voltage ripple when one power
module is disabled.
• The demonstration system is on a correct technical path, it is on budget and it is
on schedule
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The System
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Operating Power Supplies
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The Power Modules
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Near-Term Next Steps
1. Operate four power modules in a three-out-of-four redundant
configuration connected to an inductive load to provide a combined output
of 150A. Upon the loss of one module the remaining three will each
operate at their rated output of 50A. Monitor the transient current redistribution among the power modules under these conditions.
2. Place four power modules into an environmentally-controlled temperature
chamber (refer to the next slide). Connect them to an inductive load. Test
the load current stability and power module current sharing versus time
and temperature of the three-out-of-four configuration.
3. Upgrade the BitBus controller to an Ethernet controller
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Environmental Test Chamber
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End Slide - Development Workaround During Decision Period
Workaround during decision phase
Item 3 critical path – Interface with KEK to
specify the controls, performance/features of
the power modules and their crates
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