HVDC Innovation, XECHNO Power & Fresh HVDC

Transcription

1 1 HVDC Innovation, XECHNO Power & Fresh HVDC Energy Saving Technology for the Data Center Green Consulting Business Unit Solution Business Division NTT DATA INTELLILINK Corp.

2 Problems facing data centers: Energy efficiency There are so many AC/DC and DC/AC converts in a data center. Conversion causes power loss and dissipates heat, and requires more power to cool. Power Grid Transformer UPS PDU ITE ( e.g. Server ) AC DC AC DC Energy ( Power ) Loss More heat, more cooling Copyright 2013 NTT DATA INTELLILINK Corporation 2

3 IT equipment are fundamentally DC powered Most electric appliances have an internal power supply converting AC to DC. Why not directly feed them DC power? Power Supply Power Supply Power Supply Power Supply Inverter Copyright 2013 NTT DATA INTELLILINK Corporation 3

4 4 Trend: from UPS to DC+Battery Google AC480V AC200V SERVER RACK AC-SERVER DC12V Microsoft SERVER RACK DC12V-SERVER DC12V Facebook DC48V SERVER RACK AC DC48V-SERVER DC12V Battery RACK Facebook Open Compute project Open Rack Hardware v1.0 V1 Power shelf DC48V Battery RACK SERVER RACK DC12V-SERVER DC12V Facebook Open Compute project Open Rack Hardware v1.0 V2 Power shelf SERVER RACK DC12V-SERVER DC12V

5 Our proposition: HVDC and DC 12V ITEs Our HVDC power system reduces AC/DC conversions between Grid and ITE. Power loss is reduced approximately by 10-20%. Fresh HVDC XECHNO Power Power Grid Transformer PS Rack PDU Server Rack Central Redundant Power Supply AC DC 340V DC 12V Copyright 2013 NTT DATA INTELLILINK Corporation 5

6 Safety Traditional HVDC pain points have been removed AC PS Rack AC DC DC340V HVDC PDU DC340V HVDC Server Rack DC12V Server DC12V Mother CPU Memory HDD Battery Key Technology : Middle Point Ground Central Redundant Power Supply Key Technology : Bus Bar Current is limited within safety limit for Key Technology : Arc Suppression Circuit W/O Suppression Circuit W/ Suppression Circuit Less chance of fire Copyright 2013 NTT DATA INTELLILINK Corporation Resolved the arc discharge issue at the time of switch-on/off and disconnection. 6

7 7 Reliability: redundancy Non-stop maintenance and expansion through N+1,2 redundancy Server Rack 4kW Rectifier Rack ITE ( DC Server ) Input Failure PDU DC/DC 2kW Failure ITE ( DC Server ) ITE ( DC Server ) ITE ( DC Server ) ITE ( DC Server ) DC12V Central Redundant Power Supply DC/DC 2kW DC/DC 2kW Backup Backup

8 8 Reliability: fewer failure points Simpler architecture = less component count and failure points. Failure Point Failure Point Failure Point UPS Battery Switch Failure Point Mother Board AC ITE ( Server ) HVDC + DC12V Natural flow like a River Path- Through Mother Board Non-Voltage Flicker, Non-Stop, Non- Interruptible Power through N+1 Redundant Operation Battery HVDC Non-Voltage Flicker, Non-Stop, Non- Interruptible Power through N+1 Redundant Operation DC12V ITE ( Server )

9 9 Pass-through box A drop-in replacement for AC/DC power supply of conventional ITEs Only some protection circuitry No fan No liquid capacitor No need for certification Lots of space to add value Battery Sensors... and more

10 10 Combining DC sources: HVDC + Solar + Battery No need for power conditioner (no MPPT) Locally generate & consume Existing Solar Power Generation Power Conditioner DC Our testbed AC Power Company Data Center HVDC + Solar Simple & Direct Power Loss Reduction : 5 % - 10% DC Power Company HVDC DC Data Center

11 11 Production use: Ishikari DC, Sakura Internet Co. Ltd. In service, March racks, 160 kw

12 12 For greater ecosystem of HVDC -through box. What can we do to support Open Compute compliant equipment? Conventional ITE ( DC12V ) Open Compute ITE ( DC12V )

13 13 Discussion Points AC/DC --DC conversion for Facebook data centers (or Colo sites adopting OC servers)? Can we collaborate? DC/DC (Any issues?) Bus Bar (Bus bar-midplane connectors: Simply a choice of which physical shape?) ITE Input voltage fluctuation tolerance: Can we standardize on it? Open Compute mobo: 12.5 Vdc within range Conventional mobo: 12.0 Vdc within range ( 5%) Protection circuitry: Is there an Open Compute spec? Can we eliminate redundancy if any?

14 Global IT Innovator Copyright 2011 NTT DATA Corporation Copyright 2013 NTT Copyright DATA INTELLILINK 2013 NTT Corporation DATA INTELLILINK Corporation 14