EWB Wind Turbine Project:

1
EWB Wind Turbine Project

• Power Electronics Design
• Team Number 43
• Eugene Granovsky
• Craig Harrison

2
Introduction

• The goal of the project was to develop a low cost
  source of energy to be used in remote parts of
  the world
• Our portion of the project was to develop the
  power electronics that took power from the
  generator and converted it into a usable energy
  source

3
Features

• Power output to be 12V DC readily convertible to
  120V AC
• Battery bank for constant supply of power during
  momentary wind stoppages
• Modular design for easy upgrades and continued
  educational projects

4
Design Overview
5
Design of Rectifier
6
Rectifier Operation
Simulation of Rectifier/Summer with DC output
voltage (purple)
7
Design of Current Regulator
8
Operation of Schmitt Trigger
Battery voltage INCREASING and turning current
flow OFF at 12.2V
Battery voltage DECREASING and turning current
flow ON at 11.8V
9
Operation of Current Regulator
Simulation of charging current being applied to
the battery (light blue) and battery voltage
(purple)
10
Fabrication
Output to batteries
Schmitt Trigger
Rectifier
Power MOSFETs
3f Input
11
System Testing

• Input was supplied using the 3-Phase Variac in 50
  Everitt Lab
• Used two batteries (one charged and one
  discharged) as output
• Allowed us to see proper operation of our circuit
  when it was both dissipating and supplying power

12
Rectifier Output from Oscilloscope
Output
3-Phase Input
Input and Output 3f Rectifier
13
Test Data for Overall System
with the discharged battery
14
Input Voltage versus Current
with the discharged battery
15
Input Voltage versus Temperature
with the discharged battery
16
Improvements

• Better heat dissipation
• Inspect current to check how charged the battery
  is instead of voltage

17
Credits

• Jonathan W. Kimball
• Professor Peter Sauer
• Dwayne Hagerman
• Professor P. Scott Carney

18
Conclusion

• Thank you for listening
• Any questions?