Cart (Loading....) | Create Account
Close category search window
 

Three-phase short circuit synchronous machines-V

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Doherty, R.E. ; General Electric Company, Schenectady, N. Y. ; Nickle, C.A.

This paper is the fifth of a series which the authors have presented on the subject of synchronous machines. Part I was an extension of the fundamental theory; Part II, a treatment of torque-angle characteristics under steady-state conditions; Part III, a study of torque-angle characteristics under transient conditions; and Part IV, an analysis of single-phase short circuits. In the present paper, equations for the currents in the armature phases and field under three-phase short circuit are developed. The analysis is divided into three parts. The first covers the case of short circuit at no-load when the resistance is negligible in determining the magnitude of the current although it must naturally be considered in finding the decrement factors; the second considers the same case where the resistance does affect the magnitude of the current; the third covers the case of short circuit under load when resistance is negligible as in the first case. The effect of the nature of the load, i. e., whether the power factor is lagging or leading, is studied and some interesting results are brought out. It is shown that short circuits under load may give less current than at no-load, and it is further developed that under certain practical operating conditions it is even possible to obtain sub-stantially no fundamental current. The paper is illustrated with comparisons of calculated curves and oscillograms showing the actual currents obtained in test.

Published in:

American Institute of Electrical Engineers, Transactions of the  (Volume:49 ,  Issue: 2 )

Date of Publication:

April 1930

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.