HydroFly Flywheel

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HydroFly Flywheel
Gavin Abo Nate Stout Nathan Thomas
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Hydrofly

• Two Teams
• Flywheel
• Fuel Cell
• Adam Lint
• Chris Cockrell
• Daniel Hubbard

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Sponsors Mentors

• Brian Johnson
• Herb Hess
• Satish Samineni
• Greg Klemesrud
• John Jacksha

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Presentation Outline

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

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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.

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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

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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

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III. Specifications
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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

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• 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

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IV. Design Functionality

• Block Diagram
• Circuit Schematic
• Sub Circuit Schematics
• Organizational Chart
• Code Flow Diagram
• Programming
• Documentation
• Safety Features

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Block Diagram
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Circuit Schematic
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Series Transformer Diagram
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In phase Out of phase
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DC link charging power supply
We used simple rectifier circuits to generate
the DC voltage
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Organizational Chart
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Code Flow Diagram
In order to help organize the code, we produced
the following...
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Interrupts
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The Programming

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

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Documentation

• Completed
• Test plan
• Poster
• Life Cycle Report
• Product Reliability Report

• Not Completed
• Final Report
• Operations Manual

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Safety Features

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

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V. Test Plan Sample
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VI. Schedule

• This Week Final Demonstration
• To be scheduled W, Th, or Fri
• 12/12/2005 Final Report II Due
• Includes Documentation

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VII. Budget
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VIII. Future Work

• Unbalanced sags
• Better DC link charging supply
• Interface an visual human machine interface (HMI)
• Error reporting
• Event recording

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