What makes 400VDC to an attractive power alternative for ...dcforum.ru/sites/default/files/14.30-11.pdf · What makes 400VDC to an attractive power alternative for data centers? 2014-09-04

What makes 400VDC to an attractive power alternative for data centers? 2014-09-04 Data Center Forum, Moscow Marek Szpek Business Development EMEA

© Emerson Network Power AB 2012. All rights reserved throughout the world. The information in this document is the property of Emerson Network Power AB. Except as authorized by Emerson Network Power AB in a written document, those receiving this document shall keep all the information contained herein confidential, and shall protect the same from disclosure and dissemination to third parties. While every precaution has been taken to ensure accuracy and completeness in this document, Emerson Network Power AB assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions. This information in this document is subject to change without notice.

Selection of 400V DC Sites

Duke Energy 380V DC

Univ. California 380V DC

Intel 380V DC

China Telecom 240V/380V DC

SAP 380V DC

Syracuse University 380V DC

China Mobile 380V DC

Netpower Labs AB (several sites)

350V/380V DC

Green.Ch 380V DC

France Telecom 380V DC

NTT Group (several sites)

380V/400V DC

France Telecom 380V DC

European Telecom 380V DC

North American Telecom 380V DC

Several Japan Sites 300V/350V DC

Nextek 380V DC

Telecom Data Center Buildings / Microgrids Emerson power equipment

Visa 380V DC

OEM 380V DC

Clustered Systems 380V DC

IBM Singapore

380V DC

Vendor participants include: HP, IBM, EMC, Fujitsu, Hitachi, NEC

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Availability in 400VDC and AC-UPS

Mains failure; battery is connected directly to the load 28 x 12V battery blocks

Simple control scheme, only one parameter (DC voltage) Battery provides a hard source for safe & reliable fault clearing (high batt. current at short circuit =short clearing time)

Mains failure; Battery supplies power only if no malfunction on inverter or static switch 40 x 12V battery blocks Complex control scheme; voltage, frequency, phase, waveform Soft source makes fault clearing less effective (longer clearing time at short circuit due to lower inverter output current vs. batt. curent)

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Basic differences in DC and AC mind set and approach DC-UPS AC-UPS

Load AC AC

Load

- N+1 - Battery = Safety Line - Any unit to be replaced in on-line operation - Availability in primary focus

- 2N (single big system) - Grid/Diesel = Safety Line - By-pass to AC at fail or maintenance - Redundancy at maintenance/failure in focus

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Basic UPS Module configurations

5 Source:


BICSI, Class F1 and Class F2 with DC-UPS

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Class F1 – Single Power Path Class F2 – Redudant Components


BICSI, Class F3 and Class F4 with DC-UPS

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Class F3 – Dual Path: Concurrently Maintainable Class F4 – Dual Path: Fault Tolerant


Cascade Effect in Power Consumption

Power Consumption: 100 W System Load

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Server fans 15W

UPS +PDU 20W

PSU 50W

Load 100W

VR 20W

Room cooling system 70W

Total 275W

Source: Intel Corporation PUE =

185W

Total Facility Energy

IT Equipment Energy 275W = = 1.5

IT load

(12V/5V,

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End-to-end efficiency comparison

AC-UPS efficiency 50% load, no isolation transf. a. Double Conversion, market average 92-94% b. Emerson Trinergy, Double Conversion op. eff. 95,6%

230VAC Server

Total distribution, average efficiency 98%

AC/DC efficiency, market average 90%-93%

End-to-end efficiency, double conversion: Market Average 0,93 x 0,980 x 0,915 = 83,4% Emerson Trinergy 0,956 x 0,980 x 0,915 = 85,72%

AC

DC (400V)

DC-UPS efficiency 96,5% Total distribution average eff. 99% DC/DC efficiency 91%-95% (50% load, mains isolated)

End-to end efficiency 0,965 x 0,99 x 0,93 = 88,85%

Total saving 5% - 8% with 400VDC (cascade effect, mains isolation)

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N+1 redudancy in DC attractive alternative to 2N

A

B

- High overall availability

- Power available even if single unit (rectifier, controller, distribution c.b.) fails - Dual power distribution path A and B

- If controller fails the rectifiers operate at their default setting

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More simple site lay-out with 400VDC

StarLine DC Solutions, 400VDC Busway from Universal Electric

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415V AC @ 400A = 287kVA/258kW (0.9pf) 380V DC @ 400A = 152kVA X 2 = 304kVA/Kw (1.0pf)


400V Power Chain Infrastructure Availability

DC Power System

DC Load Breaker Rack PDU

Cord Connector

Emerson ABB Eltek Delta*

ABB Carling Schneider Nader Siemens

API Technologies ServerTech Echola Systems* Delta* Fujitsu*

Anderson Power Products Hubbel Rong Feng / Delta Fujitsu*

* Pre-production products or in development

400V DC Ecosystem Has Progressed Significantly Over Last Year

Distribution Busway

Univ Elec / Starline PDI* Eaton* Siemens*

ICT Load

HP – DL, ML, SL rack mount servers IBM – some X and Z series; additional products underway Juniper – EX.. And GFX.. switches Ericsson* – development underway Cisco* – UCS platform compatibility underway

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400V DC Server Availability HP

‒ HP sees 400V DC market potential and is investing in compatible products ‒ HP now offers 400V DC input in their common slot power supply for rack mount devices:

ProLiant (DL, ML, SL), Storage, etc; support for c7000 blade by end of 2014 ‒ Next generation (G9) of products will also include 400V power supplies

(500, 800, and 1200W) for 45+ Server, Storage and Switch products

IBM: ‒ Some X and Z series available today; Flex blade center support and rack mount common

slot power supplies in 2014

Juniper: EX and QFX series top of rack switches with 850W common slot power available

Huawei: working on complete IT portfolio

Cisco: UCS platform compatibility in development

NEI: catalog products available today, 1U and 2U servers

Supermicro: 2 servers models available for trial

Dell: early stages of 400V investigation

Increased Availability of 400V DC Loads 14


120kW 400V DC Power System Highlights: 120kW base system; bulk or integrated output 97% peak efficiency 15kW hot-swappable rectifier modules High-Resistance Midpoint Ground

configuration cUL/CE 60950 Listed Designed to meet NEBS

Features: Expand with additional 120kW modules

(2nd phase) Available battery cabinets Top or bottom rack cable entry 2000mm x 600mm x 1100mm footprint

B

A

B

Bulk Output Distribution

to feed A and B

Distribution Panels or

other Output

Rectifiers

AC Input

Controls

Power Module

Distribution Module

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400V DC Summary • 400V DC power reduces complexity and increases availability

compared to traditional AC power

Lower TCO

– N+1 good enough vs. 2N in many cases (fault tolerant modularity)

– No bypass/STS/paralleling equipment

– No UPS output switchboard

Higher overall efficiency

• 400V DC Eco-system continues to develop

400V DC Power Technology Improves Power Architectures in Data Center & Telecom Sites

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What makes 400VDC to an attractive power alternative for data centers?Selection of 400V DC SitesAvailability in 400VDC and AC-UPSBasic differences in DC and AC mind set and approach Basic UPS Module configurationsBICSI, Class F1 and Class F2 with DC-UPS BICSI, Class F3 and Class F4 with DC-UPS Cascade Effect in Power �ConsumptionEnd-to-end efficiency comparisonN+1 redudancy in DC attractive alternative to 2NMore simple site lay-out with 400VDCStarLine DC Solutions, 400VDC Busway from Universal Electric400V Power Chain Infrastructure Availability400V DC Server Availability120kW 400V DC Power System 400V DC Summary

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What makes 400VDC to an attractive power alternative for ...dcforum.ru/sites/default/files/14.30-11.pdf · What makes 400VDC to an attractive power alternative for data centers? 2014-09-04