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DC solutions for Data CentersDC solutions for Data Centers2011-09-06
M k S kMarek Szpek
AgendaAgendaAgendaAgendaAgendaAgendaAgendaAgendaAdvantages of DC power in Data Centers
-48V DC
400V DC400V DC
Conclusion
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Emerson Electric Co; Proprietary Information
Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Why DC in Data Centers?Datacenter trends in the marketplace show needs for:
more efficient & more dense power solutions– more efficient & more dense power solutions – diversification between functions with various needs of availability – Wide range of different backup times
DC Power is a good alternative to AC backup when– efficiency savings and TCO are important
High requirements on redundancy and availability– High requirements on redundancy and availability– Extended backup time is needed – Modularity is required to allow gradual expansion
NetSure™ ITM – an Emerson DC Power solution developed especially for Datacenters
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Emerson Electric Co; Proprietary Information
48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available Today48V IT Equipment Available TodayMajor manufacturers offer 200+ models available with DC input– HP, Cisco, Sun, Rackable (SGI), IBM, Juniper, Brocade, EMC
– Switches, Servers, Storage, Routers
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Emerson Electric Co; Proprietary Information
Power Protection ArchitecturePower Protection ArchitecturePower Protection ArchitecturePower Protection ArchitectureTraditional AC-UPS
Power Protection ArchitecturePower Protection ArchitecturePower Protection ArchitecturePower Protection Architecture
- 48V DC 48V DC
400 VDC 400V DC
Fewer conversions higher efficiency & less complexity – Fewer points of failure– Increased availability & reliability
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Emerson Electric Co; Proprietary Information
AgendaAgendaAgendaAgendaAgendaAgendaAgendaAgendaAdvantages of DC power in Data Centers
-48V DC
400V DC400V DC
Conclusion
6
Emerson Electric Co; Proprietary Information
BackgroundBackgroundDC Power System for Data CentersDC Power System for Data CentersBackgroundBackgroundDC Power System for Data CentersDC Power System for Data CentersDC Power System for Data CentersDC Power System for Data CentersDC Power System for Data CentersDC Power System for Data Centers
First NetSure prototype for data centers built 4 years agocenters built 4 years ago
Main objective for this system was to
S– Save energy
– Save footprint
R d i iti l i t t– Reduce initial investment compared to traditional UPS’s
First system installed at an Amazon data centerFirst system installed at an Amazon data center
The concept is further developed in NetSure ITM
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Emerson Electric Co; Proprietary Information
NetSure™ ITMNetSure™ ITMNetSure™ ITMNetSure™ ITMRow-Based 48V DC UPS
I t t d t ti l ti
NetSure™ ITMNetSure™ ITMNetSure™ ITMNetSure™ ITM
Integrated power protection solution
– connect up to 4 x 70 kW modules per system
– Redundancy in 5.8kW increments• Hot swappable
– 3 battery strings per module– 3 battery strings per module• 5-10 minutes of backup at full load• 10 year life time VRLA batteries
– Branch distribution: 22 output circuit breakers
– Rack form-factor: 600mm (w) x 1040mm (d); 24” x 41”N tS ™ ITM ith 2 70kW d l
– Top, bottom or mixed cable entry
– Single or dual AC inputs
NetSure™ ITM with 2 x 70kW modules
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Emerson Electric Co; Proprietary Information
Slab Floor Deployment ExampleSlab Floor Deployment ExampleSlab Floor Deployment ExampleSlab Floor Deployment Example120A AC feed to each module120A AC feed to each module
Slab Floor Deployment ExampleSlab Floor Deployment ExampleSlab Floor Deployment ExampleSlab Floor Deployment Example
|PrimaryModule
|E i
Ladder rack supported by IT racksor suspended from ceilingLadder rack supported by IT racksor suspended from ceilingLadder rack supported by IT racksor suspended from ceilingLadder rack supported by IT racksor suspended from ceilingModule
63kWExpansion
Module70kW
or suspended from ceilingor suspended from ceilingor suspended from ceilingor suspended from ceiling
Schematic overviewSchematic overview
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Emerson Electric Co; Proprietary Information
Scalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITMScalable Capacity with NetSure ITM
Connect (1) to (4) DC UPS modules to a single controller
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Emerson Electric Co; Proprietary Information
Connect (1) to (4) DC UPS modules to a single controller
AgendaAgendaAgendaAgendaAgendaAgendaAgendaAgendaAdvantages of DC power in Data Centers
-48V DC
400V DC400V DC
Conclusion
11
Emerson Electric Co; Proprietary Information
400VDC400VDC DriversDrivers400VDC400VDC DriversDrivers400VDC 400VDC -- DriversDrivers400VDC 400VDC -- DriversDrivers
Source: CPES
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Emerson Electric Co; Proprietary Information
Source: CPES
400V DC vs AC UPS in Data Centers400V DC vs AC UPS in Data Centers400V DC vs AC UPS in Data Centers400V DC vs AC UPS in Data Centers400V DC vs AC UPS in Data Centers 400V DC vs AC UPS in Data Centers 400V DC vs AC UPS in Data Centers 400V DC vs AC UPS in Data Centers
70
75
[%]
Facility 400Vdc
S i li d
Facility 48VdcIncreased overall efficiency 5-10%(less conversion stages)
60
65
deliv
ery
effic
ienc
y [ Specialized
AC UPS
High efficiency 480Vac, Rack 400Vdc, Rack 48Vdc
Facility 550V/48Vdc, 400Vac
(less conversion stages)
Higher availability > 10x
Lower footprint ≈ 30%
50
55
0 20 40 60 80 100
Load [%]
Pow
er
Baseline 480VacLower footprint, ≈ 30%
Lower heat load
E i i t ti f R bl Load [%]Source: Intel studyEasier integration of Renewable
Energy and micro-grid
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Emerson Electric Co; Proprietary Information
Source: NTT-Facilities
Emerson’s 400V pilot cabinetEmerson’s 400V pilot cabinetEmerson’s 400V pilot cabinetEmerson’s 400V pilot cabinetEmerson s 400V pilot cabinetEmerson s 400V pilot cabinetEmerson s 400V pilot cabinetEmerson s 400V pilot cabinetInput: 480VAC with 3 phase 4 wire
Output: 297 to 400V
Provides up to 80KW
High resistance mid-point grounding concept (+200V, -200V)
L d i l ti d t ti f tiLoad insulation detection function
Max 7 output load connection with load measurement
Standard server rack 600(w)*1000(D)*2000(H) :mm
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Emerson Electric Co; Proprietary Information
Examples of Emerson 400V pilot installationsExamples of Emerson 400V pilot installationsExamples of Emerson 400V pilot installationsExamples of Emerson 400V pilot installationsExamples of Emerson 400V pilot installations Examples of Emerson 400V pilot installations Examples of Emerson 400V pilot installations Examples of Emerson 400V pilot installations
A
BB
A+B configuration
IBM Blade server
A+B configuration400V+Lithium-ion
Battery
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Emerson Electric Co; Proprietary Information
400VDC sub400VDC sub--rack for embedded rack for embedded applicationsapplications400VDC sub400VDC sub--rack for embedded rack for embedded applicationsapplicationsapplicationsapplicationsapplicationsapplications
2 X 10kW 400VDC2 X 10kW 400VDC•Controller•Output Breakers•400V-48V Converter•400V-48V Converter
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Emerson Electric Co; Proprietary Information16
AgendaAgendaAgendaAgendaAgendaAgendaAgendaAgendaAdvantages of DC power in Data Centers
-48V DC
400V DC400V DC
Conclusion
17
Emerson Electric Co; Proprietary Information
ConclusionsConclusionsConclusionsConclusionsConclusionsConclusionsConclusionsConclusionsDC solutions in data centers vs traditional UPS’s
– higher total efficiency
– higher availability
l fl– less floor space
48V solutions – well established especially for telecom applications
Wide range of ICT equipment available for data centers with either AC or 48V interface
400VDC is on its way to become a new power interface standard400VDC is on its way to become a new power interface standard
– Standardization work is underway within ETSI, IEC, ITU
– 400V mass deployment is expected in ~2 years400V mass deployment is expected in 2 years
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Emerson Electric Co; Proprietary Information
