PRINCIPLES AND APPLICATIONS OF COMMON ELECTRICAL MACHINES - Couverture souple

Mahapatra, Sarat Chandra

Couverture souple

ISBN 10 : 1796510181 ISBN 13 : 9781796510188

Editeur : Independently published, 2019

Synopsis

Commonly used electromechanical energy conversion apparatus, and equipment that transform electrical energy from one voltage to another voltage may be classified as Common Electrical Machines. Accordingly, Transformers, Synchronous Generators, Three-phase Induction Motors, Single-phase Induction Motors, Single-phase Series Motors and dc Series Motors come under the category of Common Electrical Machines. Transformers are used in electric power systems, in industries, in electric traction, for electric welding, in electric furnaces, for high-voltage testing, in power electronic devices et cetera. Single-phase and three-phase power are generated by single-phase and three-phase synchronous generators respectively. Standby generators of low power rating used during power failure are generally of single-phase type. Large generators supplying bulk power invariably have three phases as generation, transmission and utilization of three-phase power are economical and more efficient. Three-phase Induction motors of various ratings are used in medium-scale and large industries. The main application of the dc series motor is in Electric Traction. Single-phase induction motors are used in small industries, workshops, domestic fans and other appliances; Single-phase series motors in fractional kilowatt range are used in portable drilling machines, vacuum cleaners, grinders, mixers and other kitchen appliances. This book covers all of the above topics, is written without too much detail, and is suitable for B. Tech Non-Electrical Engineering students. The book will also be useful for Electrical Engineering B. Tech. and Diploma students. Moreover, the book will be useful to teachers teaching the subject for the first time. The book is rich in pedagogy and has 194 Illustrations, 127 solved numerical examples, 101 Multiple-Choice Questions, 112 Questions requiring short answers, Answers to selected questions, and 155 simple Problems. The book is unique in that a book on electrical machines specifically written for non-electrical engineering students is not available in the market. This is an earnest attempt by the author to explain the principles behind the operation of common electrical machines in a simple, concise and systematic manner. Important topics are explained in some detail with two-dimensional/three-dimensional illustrations. Some other unique features of the book are: (1) Step by step development of the equivalent circuit of a two-winding transformer. (2) Necessary conditions for production of electromagnetic torque are described with illustrations. (3) Formula for the resultant magnetic field produced by a three-phase balanced winding carrying three-phase balanced current and rotating at any speed is derived and interpreted. This is in addition to the derivation of the formula for the resultant magnetic field of a balanced three-phase winding carrying three-phase balanced current (4) Several conditions must be fulfilled for synchronizing an incoming synchronous generator with an infinite bus-bar. These conditions have been justified with illustrative examples. (5) Induced voltage per phase of a three-phase synchronous generator is derived by considering a p-pole machine at the outset. (6) The book is suitable for self-study.

Détails de l'édition

• Éditeur: Independently published
• Date d'édition: 2019
• Langue: anglais
• ISBN 10: 1796510181
• ISBN 13: 9781796510188
• Reliure: Broché
• Nombre de pages: 415
• Coordonnées du fabricant: Manufactured by Amazon on behalf of the author; https://www.amazon.fr/hz/contact-us; ; c/o Amazon Media EU S.à.r.l., 38 Avenue John F. Kennedy; Luxembourg; L-1855; Luxembourg