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Microwind Alternative Energy and the Wind Belt. Thesis Defense Eric Myers. Introduction. Goals of the Research Recreate the original prototype of the windbelt generator Maximize the output voltage Design an improved version of the windbelt . Questions to be answered.

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Presentation Transcript
introduction
Introduction

Goals of the Research

  • Recreate the original prototype of the windbelt generator
  • Maximize the output voltage
  • Design an improved version of the windbelt
questions to be answered
Questions to be answered.
  • What is a windbelt generator?
  • Why choose the windbelt?
    • Cheap
    • Easy to build
    • Able to operate under low wind speeds
  • What are the other options?
    • Micro-wind turbine
    • Wind turbine
  • Why not choose the turbine?
  • How does the windbelt work?
slide4

Popular Mechanics – 2007 Breakthrough Award

Shawn Frayne

Working in Haiti, Shawn Frayne, a 28-year-old inventor based in Mountain View, Calif., saw the need for small-scale wind power to juice LED lamps and radios in the homes of the poor. Conventional wind turbines don’t scale down well—there’s too much friction in the gearbox and other components. “With rotary power, there’s nothing out there that generates under 50 watts,” Frayne says. So he took a new tack, studying the way vibrations caused by the wind led to the collapse in 1940 of Washington’s Tacoma Narrows Bridge (aka Galloping Gertie). Frayne’s device, which he calls a Windbelt, is a taut membrane fitted with a pair of magnets that oscillate between metal coils. Prototypes have generated 40 milliwatts in 10-mph slivers of wind, making his device 10 to 30 times as efficient as the best microturbines. WEB

slide5

One of the advantages of the windbelt is it’s simple design.

Frame

Moving Belt

Coil

Magnet

LED

windbelt
Windbelt
  • 4-14 mph
  • About 40 mW per device
  • $20
wind turbine
Wind Turbine
  • 15-35 mph
  • 400 Watt at 28 mph
  • $725
slide8

A 2005 Stanford University study found that there is enough wind power worldwide to satisfy global demand 7 times over — even if only 20% of wind power could be captured.

aeroelastic flutter and the wind belt

Aeroelastic Flutter and the Wind Belt

Cheap Generator Alternative,

Set to Power Third World

aeroelastic flutter
Aeroelastic Flutter
  • Flutter is a self-starting and potentially destructive vibration where aerodynamic forces on an object couple with a structure's natural mode of vibration to produce rapid periodic motion.
slide13

Flutter is a self-starting and potentially destructive vibration where aerodynamic forces on an object couple with a structure's natural mode of vibration to produce rapid periodic motion.

slide15

WiFi

Router

Rural Electricity

Powering Small

Devices

Large Scale Applications

slide16

WiFi

Router

Lighting

slide17

HVAC Temp Sensor

Air Quality Sensor

Stress Monitor Sensor

belt materials
Belt Materials
  • Ribbon
  • 35mm Film
  • Tape
  • Mylar
  • Mylar Coated Taffeta
coil making
Coil Making
  • Eric Video
  • Nathan
  • Shawn
slide28

Dipole Moment

Magnetic Field

Distance from Magnet

slide31

How do you measure the

strength of the magnet?

slide33

Is this a

inverse cube

relationship?

slide43

Flux

EMF

Michael Faraday

slide53

Up and Down

Rotation

slide57

z

z

y

y

R

R

x

x

Fair

Good

z

z

y

y

R

R

x

x

Nothing

Chaotic

slide58

z

z

y

y

R

R

z

x

x

Fair

Good

y

z

z

R

x

Best?

y

y

R

R

x

x

Nothing

Chaotic

acknowledgements
Acknowledgements
  • Dr. Bruton
  • Dr. Trikosko
  • Izzy Silver
  • Nathan Ellis
  • Alejandro Villalobos
  • Brain McGrail
references
References

“Electricity and Magnetism”

-Wayne Saslow

“Windbelt, Cheap Generator Alternative, Set to Power Third World”

-Shawn Frayne, www.humdingerwind.com

goals
Goals
  • No specialized materials
    • Can be used in developing countries
  • Weatherproof a Windbelt Array