1. Presented by: paul konz, P.E. jeff martin jonathan belanger
Dc MICRO GRIDS
Presented by: paul konz, P.E.
jeff martin
jonathan belanger

2. Learning objectives
How to meet the growing interest in DC electrical systems
How to understand DC and AC use in buildings
How to identify the barriers to all-DC systems in buildings
Importance of DC to LED applications

3. Duke university’s west union

4. TYPICAL building Power consumption
Source: Opportunities to Save Energy With DC Distribution, Suzanne Foster Porter

5. PARKS & People building

6. AC vs dc DISTRIBUTION DIAGRAM

7. Ac vs dc distribution Base case Solar panels DC Distribution Motors
Lighting
Electronics and Plug Loads
Distribution Losses
Resistive Loads

8. WHAT USES DC POWER?

9. TYPICAL VOLTAGES

10. LOOKING TO THE FUTURE

11. CEILING GRID dc LIGHTING DISTRIBUTION

12. QUESTIONS?