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

4. Design Review II: Final Design Review Outline I. Introduction II. Objectives III. Design Functionality IV. Schedule V. Budget VI. Questions

5. I. Introduction Why is the project being done? - To correct short voltage sags (a few seconds) to maintain a stable voltage to critical loads. Why is this important? - The shutdown of critical loads due to short voltage sags can be costly.

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 Operation Manual

8. III. Design Functionality Organizational Chart Block Diagram Overall Circuit Schematic Sub Circuit Schematics Programming Assembled Documentation Specifications

9. 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

10. Block Diagram

11. Circuit Schematic

12. Series Transformer Diagram

13. DC link startup power supply Generates positive DC voltage Generates negative DC voltage

14. The Programming What we have programmed –Matrix math capabilities –Space Vector PWM scheme –Sag detector and corrector What we still have to program –Phase Locked Loop –Modify already programmed code to work with the measured inputs

15. Assembled What has been assembled –Capacitor shorting bars –Utility Cart What needs assembled –DC link charging supply –LEMS –Safety Cover –Transformer

16. Documentation Test plan –Functional test plan –Specification test plan Operators Manual Poster

17. Specifications

18. IV. Schedule

19. V. Budget

20. http://www.ece.uidaho.edu/hydrofly/website VI. Questions