1. Gavin Abo Nate Stout Nathan Thomas HydroFly Flywheel

2. Hydrofly Two Teams –Flywheel –Fuel Cell Adam Lint Chris Cockrell Daniel Hubbard

3. Sponsors & Mentors Brian Johnson Herb Hess Satish Samineni Greg Klemesrud John Jacksha

4. Presentation Outline I. Introduction II. Objectives III. Specifications IV. Design Functionality V. Test Plan VI. Schedule VII. Budget VIII. Future Work IX. Questions

5. I. Introduction Why is the project being done? - To correct short voltage sags (Less than 1.5 seconds) to maintain a stable voltage to critical loads.

6. II. Primary Objective Interface a flywheel to the AMPS with the ability to correct for voltage sags occurring on the AMPS. –Implement the design by Satish Samineni

7. Secondary Objectives Spin a flywheel Communicate between converters Operate each converter with its own PWM Provide power to AMPS Make the system safe Operation Manual

8. III. Specifications

9. Goals that have not been met Fully Operational STPWM Code –Setup voltage LEMs and acquire voltages 3 voltages LEMs not yet received, but on the way Converter can acquire two voltages, but must scale by calculation of transformer ratio. –Implement sine wave lookup table Fully Operational SVPWM Code –Setup voltage LEMs and acquire voltages –Setup position encoder and acquire theta

10. Setup communication between boards –Sag status –Tsag Need to determine best pin, currently would lose temp sensor for board protection. Starting induction motor Power the DC bus capacitors

11. IV. Design Functionality Block Diagram Circuit Schematic Sub Circuit Schematics Organizational Chart Code Flow Diagram Programming Documentation Safety Features

12. Block Diagram

13. Circuit Schematic

14. Series Transformer Diagram

15. In phase Out of phase

16. DC link charging power supply We used simple rectifier circuits to generate the DC voltage

17. Organizational Chart Operate a sine–triangle PWM scheme Operate a space vector PWM scheme Provide power to AMPS Communicate between converters Program the triangle wave Program the sine wave look up table Spin a flywheel Program the switching times calculation Program a Phase locked loop Program matrix math functions Sag Status Interface a flywheel to AMPS to correct for voltage sags on the system

18. Code Flow Diagram In order to help organize the code, we produced the following...

19. Interrupts

20. The Programming All code is mathematically verified and set up to be interfaced to the DSP Testing still needs to be done.

21. Documentation Completed –Test plan –Poster –Life Cycle Report –Product Reliability Report Not Completed –Final Report –Operations Manual

22. Safety Features Plexiglas around all four sides of the cart Capacitor interface with banana jack leads Capacitor shorting bars Power strip as power connection

23. V. Test Plan Sample

24. VI. Schedule This Week Final Demonstration –To be scheduled W, Th, or Fri 12/12/2005 Final Report II Due –Includes Documentation

25. VII. Budget

26. VIII. Future Work Unbalanced sags Better DC link charging supply Interface an visual human machine interface (HMI) –Error reporting –Event recording

27. http://www.ece.uidaho.edu/hydrofly/website IX. Questions