Wind Power Workshop By Hugh Piggott Txt.pdf

Windpower

Workshop

Hugh Piggott

Foreword by Tim Kirby

British Wind Energy Association

Windpower Workshop

Building Your Own Wind Turbine

Hugh Piggott

Centre for

Alternative

The Author

Hugh Piggott runs his own successful windpower business from

his home on the beautiful, appropriately windswept, peninsula of

Scoraig, off the coast of Scotland. There he advises individuals and

companies at home and abroad on small to medium scale

windpower turbines and systems. He has been making windmills

for twenty years from scrap parts and teaching others how to do so,

for example on the Centre for Alternative Technology's twice-

yearly windpower course. His books are amongst the Centre's best

sellers. He has a wife and two children. He has also written It's A

Breeze! A Guide to Choosing Windpower, Scrapyavd Windpower and

Ckoosi~gWindpozucr for C.A.T. Publications.

Contents

The author

Foreword

Chapter One: A Wild Resource

The wind: a wild resource

No free lunch

The environmental cost

How much power can you expect?

Efficiency: where does the energy go?

Design basics

Summary ,

Chapter Two: Safety

Electrical safety

Protection against fire

Protection against shock

Battery hazards

Other responsibilities

Chapter Three: Rotor Design

Betz Revisited

Using lift and drag

Blade design

Upwind, downwind or vertical axis

Conclusion

Chapter Four: Blade Making

A word of warning

Blade weight

Blade materials

How to carve a set of rotor blades

Painting and balancing the blades

Chapter Five: Generators

What to look for

How generators work

Changing the speed of generators

Types of generator

Motors used as generators

Building a permanent magnet alternator from scrap

Design hints

In conclusion

Chapter Six: Mechanical Controls

Facing into the wind

Avoiding overload

Turning away from the wind

Shut down systems

Chapter Seven: Electrical Controls

Load control: the key to good performance

Heating systems

What batteries like best

Chapter Eight: Towers

Types of tower

How strong is strong enough?

Erection

Hands-on tower erection

Guy materials

Anchors

Hints for safe erection of tilt-up towers

So we come to the end

Glossary

Windpower Equations

Worked Examples

Access Details

Index

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