1. HydroFly Flywheel
Gavin Abo
Nate Stout
Nathan Thomas

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 What we still have to program
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 What needs assembled
Capacitor shorting bars
Utility Cart
What needs assembled
DC link charging supply
LEMS
Safety Cover
Transformer

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

17. Specifications

18. IV. Schedule

19. V. Budget

20. VI. Questions