DC-Power Using medium voltage DC grids to reduce data center losses.pdf

1、The DC-Power projectUsing medium voltage DC grids to reduce data center lossesJens Merten,Project Coordinator DC-Power,CEA,FranceBoris Sui,Researcher and Project Manager,JSI,SloveniaUsing medium voltage DC grids to reduce data center lossesThe DC-Power projectPOWER AND COOLINGDC FACILITIESStrong ele

2、ctricity demand for data centresHow to minimize impact?Green supplyRenewable energiesEfficiencyMinimise energy lossesRecycle losses2%of total global electricity demandPower consumption is top reporting priorityPower qualityHarmonics injectionReactive powerFlexibilityLack of scalability and modularit

3、yComplex modification of system size and battery capacity Complex integration of local solar power plant for greening datacentersProblems adressedEnergy losses:UPS:two conversion stepsDistribution grid:low voltage and high currents high losses (Ploss=RI2)Costly conductorsPower shelves volume/cost:Fi

4、lters for ripple(monophase converters)and EMI The concept:medium voltage DC grids6OCP racks,48VPilotsOne electrolyzer 2MWOne datacenterLessconversion losseswithMVDC72%2%2%2%3%3%P400V AC240V ACRack:48V DC 1V DCTotal loss:14%for grid power14%for PV power2%2%1%2%PD3-Bus 1500V DCRack:48V DC 1V DC1%2%Pet

5、er Wallmeier,2020TodayTomorrowOn-line UPSLine interactive UPSTotal loss:7%for grid power4%for PV powerTwo large(tier 3)data centres to be build in SloveniaOne location:Joef Stefan Institute-leading Slovenian scientific research institute,in cooperation with the Academic and Research Network of Slove

6、niaConstruction in phases 1st phase up to 500 kW,2nd phase up to 5 MWImplementation seeking top energy efficiencyexcess heat will be used for nearby buildings medium voltage DC grid for more efficient power supplycomprehensive measurement and verification plan(M&V)to check energy