wind energy explained theory design and application second edition pdf

Theory, Design and Application
Second Edition
J. F. Manwell and J. G. McGowan
Department of Mechanical and Industrial Engineering,
University of Massachusetts, USA
A. L. Rogers
DNV – Global Energy Concepts, Washington, USA

Registered office
John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdom
For details of our global editorial offices, for customer services and for information about how to apply
for permission to reuse the copyright material in this book please see our website at
The right of the author to be identified as the author of this work has been asserted in accordance with
the Copyright, Designs and Patents Act 1988.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted
by the UK Copyright, Designs and Patents Act 1988, without the prior permission of the publisher.
Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may
not be available in electronic books

Designations used by companies to distinguish their products are often claimed as trademarks. All brand
names and product names used in this book are trade names, service marks, trademarks or registered trademarks
of their respective owners. The publisher is not associated with any product or vendor mentioned in this book.
This publication is designed to provide accurate and authoritative information in regard to the subject matter covered.
It is sold on the understanding that the publisher is not engaged in rendering professional services.
If professional advice or other expert assistance is required, the services of a competent professional should
be sought

About the Authors
James Manwell is a professor of Mechanical Engineering at the University of Massachusetts
and the Director of the Wind Energy Center there.

He holds an M.S. in Electrical and Computer
Engineering and a Ph.D. in Mechanical Engineering.

He has been involved with a wide range of
wind energy research areas since the mid 1970’s.

These range from wind turbine dynamics to
wind hybrid power systems.

His most recent research has focused on the assessment of external
conditions related to the design of offshore wind turbines.

He has participated in activities of the
International Energy Agency, the International Electrotechnical Commission and the International Science Panel on Renewable Energies. He lives in Conway, Massachusetts.

We would like to acknowledge the late Professor William Heronemus, founder of the
renewable energy program at the University of Massachusetts.

Without his vision and tenacity,
this program would never have existed, and this book would never have been written. We are
also indebted to the numerous staff and students, past and present, at the University of
Massachusetts who have contributed to this program.
We would also like to acknowledge the initial contribution of the National Wind Technology
Center at the National Renewable Energy Laboratory (NREL), particularly Bob Thresher and
Darrell Dodge, in their supporting the revision and expansion of the notes on which this text is
In addition, we appreciate the contribution of Rolf Niemeyer for looking into the sources of
information on the earliest windmills and Tulsi Vembu for his editing.
Finally, we would like to acknowledge the support of our families: our wives (Joanne,
Suzanne, and Anne) and our sons (Nate, Gerry, and Ned and Josh and Brian), who have all
inspired our work.