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1U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Energy Design and Scoping Toolfor DC Distribution SystemsNREL, LBNL, Colorado State University, Robert Bosch LLC, PVI Construction ManagementStephen Frank, PhD, Senior Systems Engineer (NREL)303-275-4249 / [email protected]
2U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
DC Design and Scoping Tool
Steve FrankNREL
Rois LangnerNREL
Rich BrownLBNL
Michael WetterLBNL
Dan ZimmerleCSU
Jim CaleCSU
Sandy VanderstoepPVI
Tim Strunck Bosch
Science Education
Industry Advocacy
3U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
DC Design and Scoping Tool
Existing Studies Inconsistent
assumptions Lo-fi models Dubious claims Conflicting results
Onsite Generation
Energy Storage
Electric Vehicles
Motor Drives
Consumer Electronics
Computing Equipment
It’s a Direct Current World Out ThereDC distribution systems can save both energy and money…
…but how much?
To answer that question, industry needs rigorous and
accurate analysis tools
4U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
DC Design and Scoping Tool
5U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
DC Design and Scoping Tool
Fully capture effects of converter losses and
device part-load ratios
Provide a fair comparison between AC and DC design alternatives
Leverage whole-building energy modeling tools to calculate HVAC impacts
Ensure accuracy via thorough experimental validation
DC Technical Potential Savings in 2030U.S. buildings primary energy (electricity): 40 Quadrillion BTUElectricity delivered through power electronics: 80%Estimated savings per converter: 3%
40 × 0.8 × 0.03 = 0.96 Quads ($19 Billion) per year
Oregon0.96 Quads
The DC Energy Design and Scoping Tool will…
6U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Thank YouNational Renewable Energy LaboratoryLawrence Berkeley National Laboratory
Colorado State UniversityRobert Bosch LLC
PVI Construction Management
Stephen Frank, PhDSenior Systems Engineer (NREL)
303-275-4249 / [email protected]
