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© 2010 Eaton Corporation. All rights reserved. Efficiency + Modularity = the new Green UPS Design Ed Spears.

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Presentation on theme: "© 2010 Eaton Corporation. All rights reserved. Efficiency + Modularity = the new Green UPS Design Ed Spears."— Presentation transcript:

1 © 2010 Eaton Corporation. All rights reserved. Efficiency + Modularity = the new Green UPS Design Ed Spears

2 2 2 Data Centers – A Global Perspective Wasted energy burdens the environment and increases operational expenses Carbon Footprint in IT Computing » Only 3% of the energy entering a data center is used for net computing creating opportunities for efficiency improvements (Source: IBM, 2009) *Data source: U.S. Department of Energy, May 18, 2007, ** Does not account approx 5 units to deliver coal or gas, *** IBM, *** (45% DCiE, 2.2 PUE) Steam 35 Electric Units Delivered Server LoadProcessorServerData CenterThe GridGenerationItem

3 3 3 Challenges For Customers Energy costs and regulatory compliance will continue to place organizations at risk Social, economic and regulatory pressures to reduce carbon emissions and energy costs globally Regulations » 82% of executives expect some form of climate change regulation within 5 years (source: 2008, McKinsey) » European Union Code of Conduct for Data Centers » UK Carbon Reduction Commitment (2010) Increasing Energy Costs » Through 2009, Energy costs will emerge as the second highest operating cost (behind labor) in 70% of the Data Center facilities worldwide (source: Gartner) Sustainability » 80% of CEO’s view sustainability as impacting brand value (source: 2008, McKinsey) » 31% say they want to reduce their environmental impact (source: 2008, McKinsey) » IT accounts for 2% of the global CO2 emissions, as much as the airline industry (source: 2008, IBM, UK)

4 4 4 The Quest For Energy Efficiencies The Key Challenge For Our Customers Energy Efficiency » Reduced OpEx » Sustainability » Regulations Eaton 9395 UPS Source: CEMEP UPS The Solution Energy Advantage Architecture » Innovative proprietary technologies bringing new ways to maximize UPS energy efficiencies without compromising on reliability

5 5 5 Energy Advantage Architecture Two complementary Eaton-proprietary technologies to maximize UPS performance & efficiency Energy Advantage Architecture Higher System Efficiency No Compromise On Reliability Energy Saver Systems (ESS) » The ultimate savings: 99% efficiency » Automatic fast transfer to double conversion mode when needed (in less than 2 ms) Variable Module Management System (VMMS) » Maximized efficiency in double conversion mode » Both in single- and multi-UPS systems applications

6 © 2010 Eaton Corporation. All rights reserved. Energy Advantage Architecture Variable Module Management System (VMMS)

7 7 7 The Challenge For UPS’s » In double conversion mode, the efficiency of any UPS varies depending on the % of load Highest efficiency when close to full capacity » UPS systems rarely loaded at full capacity This is a fact in redundant systems » How to maximize efficiency potential of UPS systems with lighter loads The Solution: Eaton 9395 UPS and VMMS

8 8 8 The Solution: Eaton VMMS How to maximize efficiency with lighter loads in double conversion mode, especially in multi-UPS and redundant system configurations? Solution #2 (+++) Eaton 9395 and its Variable Module Management System » Automatically optimize efficiency at UPM level Concentrate the load on certain UPM’s to maximize overall system efficiency » Only possible thanks to modularity of Eaton 9395 UPS Not limited to multiple-UPS systems Achieve even higher optimization thanks to UPM’s modularity Solution #1 (+) Concentrate load on certain UPS’s to maximize UPS load level and overall system efficiency » Some energy savings Limited to multiple-UPS systems (with several UPS in parallel) Still not optimal

9 9 9 VMMS Principle Example With Same Load Applied To Different Multi-UPS Configurations

10 10 Fast Start VMMS/ESS Technology Pumpback DiodeA diode in the Inverter assembly that pumps excess energy back into the DC link during transistor turn off or transfers on and off line. Same Circuit with transistors off. The pumpback diodes rectify the critical bus output and create appox. 700vdc on the pos and neg dc rails. The pumpback diodes act as a 3phase bridge rectifier. INVERTER ONINVERTER IN SUSPENDED MODE

11 11 VMMS Principle VMMS maximizes % load of each UPM Optimizing overall system efficiency % load of each UPS in Case2 (legacy UPS with some multi-UPS efficiency optimization) System Efficiency gain using legacy UPS efficiency optimization % load of each legacy UPS in Case1 (no multi-UPS efficiency optimization) % load of each UPM in Case1 when using Eaton 9395 UPS without VMMS LEGACY UPS EATON UPS % load of each active UPM in Case3 when using Eaton 9395 and VMMS System Efficiency gain thanks to 9395 and VMMS Higher Efficiency with 9395 and VMMS

12 12 Eaton kVA UPS Eaton kVA UPS Eaton kVA UPS Eaton kVA UPS VMMS In A Nutshell kVA kVA kVA kVA 9395 VMMS N+0 Typical Operations Range VMMS allows to shift to higher efficiency curves (according to system’s redundancy requirements) up to N+0 VMMS efficiency curve Notes: - Scaled drawing - VMMS and N+0 curves using VMMS default max UPM % load 80% (*) kVA with VMMS and N+0 configuration* kVA with VMMS and N+0 configuration* kVA with VMMS and N+0 configuration* VMMS allows to shift to higher efficiency curves (according to system’s redundancy requirements) up to N+0 VMMS efficiency curve VMMS allows to shift to higher efficiency curves (according to system’s redundancy requirements) up to N+0 VMMS efficiency curve

13 13 VMMS Applications VMMS can be used in all multi-module (multiple-UPM) 9395 systems » Single 9395 units from 550kVA to 1100kVA » Distributed parallel systems SBM Systems Typical Applications Where VMMS Particularly Efficient » Redundant N+1 and 2N systems UPS’s Lightly loaded: typically operate at loads < 45% load level where efficiency is not optimal » Data Centers, especially when UPS system feeds dual corded servers » Any applications when load is not constant

14 14 VMMS Example: 9395 / 825kVA Units in Dual Corded Load with A & B feeds UPS Configuration Without VMMSVMMS on N+1 RedundancyVMMS on N+0 Redundancy 440kVA load 91.2%92.8%94.3% UPS Energy Savings Used as reference for savings calculation 56 MWh / year108 MWh / year Additional Benefits & Comments Industry-leading UPS efficiency in double conversion Additional energy savings from reduced cooling in VMMS (typically % to UPS energy savings) UPM’s in VMMS ready state available for redundancy Example with 440kVA load (A 220kVA + B 220kVA) “A” “B” Single / Dual SourceData Center with Dual Corded Servers A Feed 220kVA B Feed 220kVA A Feed 220kVA B Feed 220kVA A Feed 220kVA B Feed 220kVA

15 15 VMMS – How Can I Get It? Variable Module Management System is available: » on Eaton 9395 UPS » Earlier installations can also be upgraded with VMMS capability

16 16 Energy Saver System The game-changing UPS technology

17 17 UPS inefficiencies are a significant contributor to energy costs Example – 2009 $1M buys approximately 50 5kW racks Cost of UPS electrical losses per year – $28k * Underlying figures from The Invisible Crisis in the Data Center: The Economic Meltdown of Moore’s Law, Uptime Institute, 2007

18 18 The Answer — Energy Saver System Efficient 99% efficiency across entire operating range Intelligent Detects incoming power quality and engages modules as needed Reliable Proven double conversion topology ensures continuous load availability

19 19 Engage subsystems in real time, based on input power quality Input Power Quality Active Modules

20 20 Energy Saver System is Fast Computer system tolerance. 20 mSec…..1/50 th of a second Energy Saver System. 1.2 mSec total…1/830 th of a second (Inverter is engaged in 620 micro-seconds!) Digital Static Transfer Switch (STS). 4 mSec…..1/250 th of a second

21 21 DVT Testing - Three Phase Outages Test Setup Source Channels -> 3,5,&7 Output/Load Channels -> 4,6,&8 Load -> 100KW Resistive Unit -> 275KVA IR (Internal Redundant) with Common Battery Test Description 1/2 cycle 0% dropout sequence (All Phases) (0% is a low impedance (short) source fault) Test Result 1.2ms Transfer Time (600us detection time plus 600us SCR clearing time). Source Output

22 22 DVT Testing - Three Phase Outages Continued Test Setup Source Channels -> 3,5,&7 Output/Load Channels -> 4,6,&8 Load -> 225KVA ∆Y Transformer with 100KW Resistive Load Unit -> 275KVA IR (Internal Redundant) with Separate Batteries Test Description 40 cycle 40% dropout sequence (All Phases) Test Result 1.6ms Transfer Time (1ms detection time plus 600us SCR clearing time). Source Output

23 23 DVT Testing - Single Phase Outages Test Setup Source Channels -> 3,5,&7 Output/Load Channels -> 4,6,&8 Load -> 100KW Resistive Unit -> 275KVA IR (Internal Redundant) with Common Battery Test Description 1 cycle 0% dropout sequence (phase L1) (0% is a low impedance (short) source fault) Test Result 1ms Transfer Time Source Output

24 24 DVT Testing - Single Phase Outages Continued Test Setup Source Channels -> 3,5,&7 Output/Load Channels -> 4,6,&8 Load -> 100KW Resistive Unit -> 275KVA IR (Internal Redundant) with Common Battery Test Description 12 cycle 40% dropout sequence (phase L2) Test Result 1.2ms Transfer Time Source Output

25 25 DVT Testing - Single Phase Outages Continued Test Setup Source Channels -> 3,5,&7 Output/Load Channels -> 4,6,&8 Load -> 225KVA ∆Y Transformer with 100KW Resistive Load Unit -> 275KVA IR (Internal Redundant) with Separate Batteries Test Description 1 cycle 0% dropout sequence (Phase L2) Test Result 1.6ms Transfer Time Output Source

26 26 ESS Response Example – 100% Outage

27 27 What about power line transients? »In either ESS or VMMS mode the inverter filter is continuously “on-line” – it works with an inline inductor to filter out any abnormal line transients. Need proof? Inline inductor Inverter Filter

28 28 ESS Technology “Typical” Surge IT Equipment tolerance UPS output with Surge Filter

29 29 High Alert Mode High Alert Mode: Continued Storm Detection: Storm detection is the setting in which the UPS locks into double conversion mode when three power line disturbances have forced three transfers from ESS to double conversion mode within an hour. The system will then remain in high alert mode for one hour after the last line disturbance (before transferring back to ESS). Any power strategy command from the front display will reset the one hour ESS lockout period. Note: the one hour timer is EEP configurable.

30 30 Operation during faults (short circuits) ESS Output Fault Detection (Breaker Clearing) While in ESS the UPS is capable of detecting the difference between a load fault and an upstream short. If a load fault is detected, the UPS will try to clear the fault/breaker by remaining in ESS. If the fault is a short upstream from the UPS, it will immediately perform a forward transfer. The forward transfer time is less than 2 ms (due to the DSP control) ESS Overload Behavior If the load exceeds 110% of the UPS capacity while in Energy Saver System, the UPS will transfer to bypass and will remain there until the overload clears. Once the overload clears, the unit transitions back to Energy Saver System (except for output faults – see above).

31 31 Energy Saver System saves even more at lower loadings ESS Efficiency — 99% across the complete operating range

32 32 Energy Saver System — the bottom line The energy savings from ESS typically recovers 100% of the UPS cost over a 2-3 year period. » At 250 kW of critical load, the savings is equivalent to $4000 per year per point of efficiency gain. Backing up your 250 kW load with an ESS UPS is equivalent to pulling 29 cars off the road.

33 33 Energy Saver System – The Bottom Line – 250kW The energy savings from ESS typically recovers 100% of the UPS cost over a year period Every 250kW with ESS is equivalent to pulling 29 cars off the road. Summary Table Critical Load50 kW125 kW250 kW500 kW700 kW Electric Costs (energy + demand) per kW hr $0.11 Legacy UPS efficiency92.5% 93% Eaton ESS UPS efficiency99% 3-Year energy savings145 MW hr363 MW hr670 MW hr1340 MW hr1876 MW hr 3-Year CO 2 savings 104 metric tons 261 metric tons 481 metric tons 962 metric tons 1347 metric tons Cars off the road6 cars16 cars29 cars59 cars82 cars 3-Year electric cost savings$15,972$39.929$73,715$147,431$206,403

34 34 Summary — Energy Saver System Energy costs are overwhelming equipment costs in data centers. » UPS electrical losses account for 5–10% of the overall electrical expenditure.* Eaton’s Energy Saver System drives these losses down to nearly zero. The energy savings recovers the cost of the UPS in less than five years. * Underlying figures from The Invisible Crisis in the Data Center: The Economic Meltdown of Moore’s Law, Uptime Institute, 2007

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