1. Adam Benjamin Kevin Brokish Joel Wiechmann Joseph Wang Capstone – Spring 2007 - CDR Eric Wilson

2. Presentation Outline OverviewOverview DesignDesign ImplementationImplementation OverviewOverview DesignDesign ImplementationImplementation

3. Overview What is it all about?

4. Mission Statement The mission of SimBoulder is to demonstrate the effective integration of renewable energy power sources

5. Baseline Objectives  Model City Power Infrastructure  Integrate renewable and traditional sources  Measurement and Display

6. Design It starts with a plan!

7. Design Outline  CPU  Battery System  Solar Converter  Hydro System  Load Usage

8. Block Diagram Light Solar Cells Peak Power Converter ConverterRelay Generator Water Pump Power Management Circuitry Capacitor Bank CPU City LCD Power Supply BatteryTwo-way Converter Current- Limiter User Input

9. MSP430F1611 and LCD

10. Software Block Diagram Store Power Usage Data Store Power Generation Data Update Virtual LCD Write to LCD City Control Sun Control Interrupts Loop

11. LCD Layout

12. Schematic – Battery System

13. Specifications – Battery System  Charge battery when excess power is available  Discharge battery when more power is needed to power city  Store excess power using 12V, 7Ah sealed lead-acid battery  Convert battery voltage to 5V city voltage using bi-directional Buck converter

14. Solar Panel Test Results

15. Solar Converter Schematic Buck Converter Current- sensing feedback

16. Specifications - Solar Converter Max solar panel output power = 4 W at 15.5 V Duty cycle D = 0.3 Small resistor Rtest = 0.1Ω used to determine current Peak Power Tracker takes output voltage of sub- tractor circuit Compares output voltage with previous voltage

17. Specifications – Hydro System  Pump water over turbine with sump pump  Generate power using Pittman GM9236 DC brush motor with gear ratio of 19.7:1  Convert output voltage of generator to city voltage using Buck converter

18. Schematic – LEDs

19. Schematic – Heating Element

20. Implementation Beginning to Implement

21. Division of Labor SimBoulder Task Division Kevin CPU Peak Power Tracker Joel & Adam Hydro System Battery Converter City Construction PCB Construction Eric Solar Converter Peak Power Tracker Joe Load Usage Project Conclusion & Impact

22. Project Timeline

23. Joel & Adam Hydro System Battery Converter City Construction Purchase Motor/Gener ator (March 2) Test Hydro System IV Characteri stics (March 7) Construct turbine and complete Hydro System Setup (March 20) Full City Integration (April 17) Purchase Battery (March 2) Purchase City Construction Material (April 3) Design and Construct City (April 10) Design and Construct Converter w/ Voltage Feedback (March 20) Design and Construct Converter, w/ current Feedback (March 15)

24. Project Timeline Kevin CPU Design Input and Output to CPU (March 2) Get LCD Working (March 23) Get Input Working (March 30) Get Output Working and Complete Code for Output (April 6) Complete Code for Input & Display (April 13) Full City Integration (April 17)

25. Project Timeline Eric Solar Converter Design Power Converters (March 2) Construct Power Converter (March 20) Test Solar System Operation (April 9) Full City Integration (April 17)

26. Project Timeline Joe Load Usage Test Load Usage for Heating Element & Transportatio n System (April 10) Test LED’s & Electric Motor (March 27) Design and Construct Heating Element & Transportatio n System (April 3) Design and Construct LED’s & Electric Motor (March 20) Full City Integration (April 17)

27. Project Timeline Adam PCB Full City Integration (April 17) Finalize schematic in Altium for PCB (March 5) Send off schematic for PCB construction (March 12) Revise and Resend update PCB schematic for construction (April 3)

28. Parts List

29. Milestone 1 Construction of Hydro system Converter Construction of Battery Converter Solar Panel Converter LED and Electric Motor Construction First PCB submitted

30. Milestone 2  LCD working and code written  Heating elements and transportation built  Second PCB submitted (hopefully received)

31. Questions?