Switched Reluctance Motor Drives
Switched Reluctance Motor Drives

Author: Berker Bilgin

Publisher: CRC Press

Published: 2019-04-29

Total Pages: 975

ISBN-13: 1351396714

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Electric motors are the largest consumer of electric energy and they play a critical role in the growing market for electrification. Due to their simple construction, switched reluctance motors (SRMs) are exceptionally attractive for the industry to respond to the increasing demand for high-efficiency, high-performance, and low-cost electric motors with a more secure supply chain. Switched Reluctance Motor Drives: Fundamentals to Applications is a comprehensive textbook covering the major aspects of switched reluctance motor drives. It provides an overview of the use of electric motors in the industrial, residential, commercial, and transportation sectors. It explains the theory behind the operation of switched reluctance motors and provides models to analyze them. The book extensively concentrates on the fundamentals and applications of SRM design and covers various design details, such as materials, mechanical construction, and controls. Acoustic noise and vibration is the most well-known issue in switched reluctance motors, but this can be reduced significantly through a multidisciplinary approach. These methodologies are explained in two chapters of the book. The first covers the fundamentals of acoustic noise and vibration so readers have the necessary tools to analyze the problems and explains the surface waves, spring-mass models, forcing harmonics, and mode shapes that are utilized in modeling and analyzing acoustic noise and vibration. The second applies these fundamentals to switched reluctance motors and provides examples for determining the sources of any acoustic noise in switched reluctance motors. In the final chapter two SRM designs are presented and proposed as replacements for permanent magnet machines in a residential HVAC application and a hybrid-electric propulsion application. It also shows a high-power and compact converter design for SRM drives. Features: Comprehensive coverage of switched reluctance motor drives from fundamental principles to design, operation, and applications A specific chapter on electric motor usage in industrial, residential, commercial, and transportation applications to address the benefits of switched reluctance machines Two chapters address acoustic noise and vibration in detail Numerous illustrations and practical examples on the design, modeling, and analysis of switched reluctance motor drives Examples of switched reluctance motor and drive design

Electronic Control of Switched Reluctance Machines
Electronic Control of Switched Reluctance Machines

Author: TJE Miller

Publisher: Elsevier

Published: 2001-05-18

Total Pages: 288

ISBN-13: 0080505244

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Switched reluctance motors have steadily increased in commercial importance since their introduction in the early 1980's, while their technology - especially of their electronic control - has made great progress. Their unique characteristics introduce a delicate balance, in which the copper and iron are diminished in quantity, complexity and cost, in favour of a greater reliance on sophistication in the controller. Thus mastery of the control is the key challenge in the application of these machines. This book is intended for engineer's in industry and in the large research community in electrical machines and drives. It introduces the techniques for controlling switched reluctance machines, starting from first principles and building up to the most advanced forms of sensorless control. It covers the recent advances in electronic control and includes aspects of motion control, automation, acoustic noise reduction and energy efficiency. - Covers the recent changes in control technology - Includes up-to-date equipment and methods - Contains applications and case studies

Reluctant Celebrity
Reluctant Celebrity

Author: Lorraine York

Publisher: Springer

Published: 2018-01-17

Total Pages: 158

ISBN-13: 3319711741

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In this book, Lorraine York examines the figure of the celebrity who expresses discomfort with his or her intense condition of social visibility. Bringing together the fields of celebrity studies and what Ann Cvetkovich has called the “affective turn in cultural studies”, York studies the mixed affect of reluctance, as it is performed by public figures in the entertainment industries. Setting aside the question of whether these performances are offered “in good faith” or not, York theorizes reluctance as the affective meeting ground of seemingly opposite emotions: disinclination and inclination. The figures under study in this book are John Cusack, Robert De Niro, and Daniel Craig—three white, straight, cis-gendered-male cinematic stars who have persistently and publicly expressed a feeling of reluctance about their celebrity. York examines how the performance of reluctance, which is generally admired in celebrities, builds up cultural prestige that can then be turned to other purposes.

Switched Reluctance Motor Drives
Switched Reluctance Motor Drives

Author: R. Krishnan

Publisher: CRC Press

Published: 2017-12-19

Total Pages: 454

ISBN-13: 1351835955

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The switched reluctance machine (SRM) is the least expensive electrical machine to produce, yet one of the most reliable. As such, research has blossomed during the last decade, and the SRM and variable drive systems using SRMs are receiving considerable attention from industry. Because they require a power electronic converter and controller to function, however, successful realization of an SRM variable drive system demands an understanding of the converter and controller subsystems and their integration with the machine. Switched Reluctance Motor Drives provides that understanding. It presents a unified view of the machine and its drive system from all of its system and subsystem aspects. With a careful balance of theory and implementation, the author develops the analysis and design of SRMs from first principles, introduces a wide variety of power converters available for driving the SRM, and systematically presents both low- and high-performance controllers. The book includes an in-depth study of acoustic noise and its minimization along with application examples that include comparisons between ac and dc drives and SRM drive. The result is the first book that provides a state-of-the-art knowledge of SRMs, power converters, and their use with both sensor-based and sensorless controllers. Switched Reluctance Motor Drives enables both students and engineers to learn all aspects of SRM drive systems and appreciate the interdependence of the various subsystems in performance optimization.

The Reluctant Hostess
The Reluctant Hostess

Author: Ethelind Fearon

Publisher: Random House

Published: 2015-03-05

Total Pages: 146

ISBN-13: 1784870307

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A charming and very funny guide to entertaining etiquette from the 1950s. Do you dread dinner parties? Is your catering catastrophic? Ethelind Fearon is here to help. In this charming 1950's guidebook you'll find suggestions for cocktails rated by technical difficulty (GVC = good and cheap; NN = not for novices), ideas for party games (how about a cork race?), as well as some of the most unappetising recipes known to mankind -- Liver Flan with curried cheese, anyone? Hilarious yet indispensable, The Reluctant Hostess will ensure you achieve excellence in all your entertaining.

Reluctant Reception
Reluctant Reception

Author: Kelsey P. Norman

Publisher: Cambridge University Press

Published: 2020-11-12

Total Pages: 279

ISBN-13: 1108842364

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An original, comparative analysis of the politics of asylum seeking and migration in the Middle East and North Africa, using Egypt, Morocco and Turkey to explore why, and for what gain, host states treat migrants and refugees with indifference.

The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors
The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors

Author: Gianmario Pellegrino

Publisher: Springer

Published: 2016-04-28

Total Pages: 142

ISBN-13: 3319322028

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This book offers an essential compendium on the analysis and design of synchronous motors for variable-speed applications. Focusing on synchronous reluctance and ferrite permanent-magnet (PM) synchronous reluctance machines, it provides a broad perspective on three-phase machines for variable speed applications, a field currently dominated by asynchronous machines and rare-earth PM synchronous machines. It also describes synchronous reluctance machines and PM machines without rare-earth materials, comparing them to state-of-the-art solutions. The book provides readers with extensive information on and finite element models of PM synchronous machines, including all relevant equations and with an emphasis on synchronous-reluctance and PM-assisted synchronous-reluctance machines. It covers ferrite-assisted machines, modeled as a subcase of PM-assistance, fractional slot combinations solutions, and a quantitative, normalized comparison of torque capability with benchmark PM machines. The book discusses a wealth of techniques for identifying machine parameters, with an emphasis on self-commissioning algorithms, and presents methods for automated machine design and optimization, including a software tool developed for this purpose. Addressing an important gap in the field of PM-less and less-PM electrical machines, it is intended as a self-contained reference guide for both graduate students and professional machine designers, and as a useful text for university courses on automated and/or optimized design of electrical machines and drives.

Sexual Coercion in Dating Relationships
Sexual Coercion in Dating Relationships

Author: E. Sandra Byers

Publisher: Psychology Press

Published: 1996

Total Pages: 204

ISBN-13: 9781560248156

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Sexual Coercion in Dating Relationships represents the next generation of research in the area of sexual coercion. This collection of critical analyses of current research and possible directions for future research benefits all researchers, counselors, and educators who need to thoroughly understand research efforts in this field. The clear analyses allow readers to evaluate critical issues and progress in the field to date.Outside of research and feminist communities, sexual coercion is frequently minimized and too often stereotyped. The words "sexual coercion" (synonyms with "sexual aggression" and "sexual assault") conjure in the minds of many the image of a deranged man attacking a woman stranger in a dark place where she should know better than to be walking alone. This and other stereotypes are challenged by the authors of Sexual Coercion in the Dating Relationship.The chapters examine other important issues that have yet received little research attention. For example, one author tests the empirical assumptions inherent in a prominent theory about the causes of sexual coercion. Some of the authors challenge the assumption that only women are pressured or forced to engage in unwanted or nonconsensual sex. Other authors address issues related to the prevention of sexual coercion of women and challenge current conceptions of women's sexuality. Still others identify methodological problems related to research on sexual coercion, such as current methods of identifying attitudes supportive of the use of sexual coercion. All of the chapters challenge current beliefs related to the issue of sexual coercion and are designed to spur researchers and educators forward into new ground.With the publication of this book, readers are forced to re-think their assumptions on sexual coercion with the new statistics and research on these topics: evaluates of a prominent theory of the causes of sexual coercion (the traditional script) examines men's and women's use of sexual influence in their dating relationships, the types of behavior men and women use to influence their partners to engage in unwanted sex, and the associated consequences for the individuals and the relationship compares men's and women's reactions to sexual coercion presents a model to predict women's resistance and evaluates effective, practical measures of prevention for women evaluates attitudes-toward-rape literature and the predictive ability of assessing attitudes critical reviews of current conceptions of women's sexuality and the need to restructure culturally endorsed attitudes in our prevention efforts reviews methodological problems plaguing many current research investigations and the political ramifications of many investigations in this areaBecause this book presents information related to the prevention and experience of sexual coercion, Sexual Coercion in Dating Relationships is helpful in developing long-term research and preventive programs. This sourcebook also helps researchers, expert witnesses, counselors (especially college support staff), and college and university educators provide information to students and others about sexual coercion.

Crushing Call Reluctance for Loan Officers
Crushing Call Reluctance for Loan Officers

Author: Carl White

Publisher:

Published: 2018-08-08

Total Pages:

ISBN-13: 9781732465503

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If you could double your application volume in the next 12 weeks, would it be worth it to you to read this book? Call reluctance for loan officers can be summed up in two sentences:"Fear is peeing in your pants. Courage is doing what you need to do with wet pants on."~ Carl WhiteSeriously, everybody feels the fear - truly everybody. Even the most confident top producer who is making sales all day long on the phone may look fearless, but they're not. They feel the fear and do what needs to be done with wet pants on. Being brave isn't easy but it does get easier over time. By the time you finish reading this book, you are going to have new insights, a fresh perspective, some tricks you can use to bypass your limiting beliefs and you will be able to pick up the phone or go make some sales calls and have conversations a whole lot easier. We aren't the flashiest guys but we know this industry. We have worked with thousands of loan officers who have claimed their readiness to help more people and live the lifestyle they want with the right income to support it. Now we are taking what we know how to do - to generate sales volume through direct sales - to help loan officers like you get ahead. When you make a simple mental shift, you can accelerate your results and change lives - yours and everyone's life you touch through your business. And it can happen fast when you work with the system we're about to teach you.