General Airgap Field Modulation Theory for Electrical Machines - Principles and Practice

General Airgap Field Modulation Theory for Electrical Machines
 
Introducing a new theory for electrical machines
 
Air-gap magnetic field modulation phenomena have been widely observed in electrical machines. This book serves as the first English-language overview of these phenomena, as well as developing systematically for the first time a general theory by which to understand and research them. This theory not only serves to unify analysis of disparate electrical machines, from conventional DC machines, induction machines, and synchronous machines to unconventional flux-switching permanent magnet machines, Vernier machines, doubly-fed brushless machines etc., but also paves the way towards the creation of new electrical machine topologies.
 
General Airgap Field Modulation Theory for Electrical Machines includes both overviews of key concepts in electrical machine engineering and in-depth specialized analysis of the novel theory itself. It works through the applications of the developed theory before proceeding to both qualitative analysis of the theory's operating principles and quantitative analysis of its parameters.
 
Readers will also find:
* The collective experience of four award-winning authors with long records of international scholarship on this subject
* Three separate chapters covering the principal applications of the theory, with detailed examples
* Discussion of potential innovations made possible by this theory
 
General Airgap Field Modulation Theory for Electrical Machines is an essential introduction to this theory for postgraduates, researchers, and electrical engineers.

List of contents

Preface xi
 
About the Authors xv
 
About the Companion Website xvii
 
1 Introduction 1
 
1.1 Review of Historical Development of Electrical Machines 1
 
1.2 Limitations of Classical Electrical Machine Theories 7
 
1.2.1 Fragmentation of Electrical Machine Theories 7
 
1.2.2 Limitations in Analysis of Operating Principles 8
 
1.2.3 Lack of Uniformity in Performance Analysis 9
 
1.3 Overview of Magnetic Field Modulation Machines and their Theories 11
 
1.4 Scope and Organization of the Book 14
 
References 16
 
2 Airgap Magnetic Field Modulation Phenomena in Electrical Machines 23
 
2.1 Traditional Electrical Machines 23
 
2.1.1 Brushed Direct Current Machines 24
 
2.1.2 Induction Machines 26
 
2.1.3 Synchronous Machines 29
 
2.2 Field Modulation Magnetic Gears 33
 
2.2.1 Construction and Operating Principle 34
 
2.2.2 Airgap Magnetic Field Modulation Behaviors 36
 
2.2.3 Other MG Types 42
 
2.3 Magnetically Geared Machines 45
 
2.3.1 Evolution of MGMs 46
 
2.3.2 Airgap Magnetic Field Modulation Behaviors 48
 
2.4 PM Vernier Machine 50
 
2.4.1 Machine Construction 50
 
2.4.2 Airgap Magnetic Field Modulation Behaviors 50
 
2.5 Linear PMV Machine 52
 
2.5.1 Machine Construction 53
 
2.5.2 Airgap Magnetic Field Modulation Behaviors 54
 
2.6 Flux-switching PM Machine 57
 
2.6.1 Magnetic Field Modulation Mechanism of PM Field 58
 
2.6.2 Magnetic Field Modulation Mechanism of Armature Field 62
 
2.7 Doubly-Fed Machines 66
 
2.7.1 Classification and Operating Principles 67
 
2.7.2 Cascaded Type 70
 
2.7.3 Modulation Type 71
 
2.7.4 Commonalities and Differences of Existing Brushless Doubly-fed Machines 78
 
2.8 Uniformity of Machine Operating Principles 79
 
References 82
 
3 Three Key Elements Model for Electrical Machines 87
 
3.1 Introduction 87
 
3.2 Classical Winding Function Theory and Its Limitations 89
 
3.2.1 Winding MMF 89
 
3.2.2 Classical Winding Function Theory 92
 
3.2.3 Limitations of Classical Winding Function Theory 95
 
3.3 Three Key Elements 99
 
3.3.1 Source of Excitation 101
 
3.3.2 Modulator 101
 
3.3.3 Filter 103
 
3.4 Mathematical Representation of Three Key Elements 103
 
3.4.1 Source MMF 104
 
3.4.2 Modulation Operator 108
 
3.4.3 Filter 120
 
3.4.4 Unified Airgap Model 121
 
3.4.5 Duality Between Electrical Machines and Switching Power Converters 124
 
3.5 Torque Decomposition 129
 
3.5.1 General Torque Equation 129
 
3.5.2 Wound-Field Salient-Pole SM 132
 
3.5.3 SynRM 135
 
3.5.4 Squirrel-Cage IM 135
 
3.5.5 Bdfrm 136
 
3.5.6 Bdfim 138
 
3.5.7 FSPM Machine 139
 
3.5.8 PMV Machine 151
 
3.5.9 Axial-Flux PMV Machine 155
 
References 158
 
4 Analysis of Magnetic Field Modulation Behaviors 163
 
4.1 Introduction 163
 
4.2 Magnetic Field Modulation Behaviors and Torque Components 163
 
4.2.1 Asynchronous and Synchronous Modulation Behaviors 164
 
4.2.2 Asynchronous and Synchronous Torque Components 166
 
4.3 Characterization of Modulation Behaviors in Typical Machine Topologies 167
 
4.3.1 Brushed DCM 168
 
4.3.2 Wound-Field Salient-Pole SM 168
 
4.3.3 Wound-Field Non-Salient-Pole SM and Slip-Ring Doubly-Fed Induction Machine 169
 
4.3.4 Squirrel Cage IM and BDFIM 170
 
4.3.5 Synch

About the author

Ming Cheng, Ph.D., FIEEE, is the Endowed Chair Professor of Electrical Engineering and Director of the Research Center for Wind Power Generation at Southeast University, China. He received B.Sc. and M.Sc. degrees from Southeast University and a Ph.D. in electrical engineering from University of Hong Kong. He has been the recipient of the State Technological Invention Award of China, the IET Achievement Award, and an IEEE IAS Distinguished Lectureship, among others. Peng Han, Ph.D. is a Senior Application Engineer at Ansys Inc., USA. He received both B.Sc. and Ph.D degrees in electrical engineering from Southeast University, China, and was a postdoctoral researcher at The Ohio State University and University of Kentucky, USA. He received third prize in the IEEE IAS Student Thesis Contest in 2018. Yi Du, Ph.D. is a Professor of Electrical and Information Engineering at Jiangsu University, China. He received B.Sc. and M.Sc. degrees from Jiangsu University and Ph.D. in electrical engineering from Southeast University, China. He was a Visiting Professor at The University of Sheffield, UK, from 2018 to 2019. Honghui Wen, Ph.D. is a Research Assistant at Southeast University, China. He received B.Sc. and Ph.D. degrees in electrical engineering from Southeast University. He received second prize in the IEEE IAS Myron Zucker Undergraduate Student Design Contest in 2017.

Product details

• Authors: Ming Cheng, Ming (Southeast University Cheng, Cheng Ming, Yi Du, Yi et al Du, Du Yi, Peng Han, Honghui Wen
• Publisher: Wiley, John and Sons Ltd
• Languages: English
• Product format: Hardback
• Released: 19.12.2022
• EAN: 9781119900344
• ISBN: 978-1-119-90034-4
• No. of pages: 560
• Subjects: Natural sciences, medicine, IT, technology > Technology > Electronics, electrical engineering, communications engineering; Elektrotechnik, Energie, Leistungselektronik, ENERGY, Electrical & Electronics Engineering, Elektrotechnik u. Elektronik, Allg. Elektrotechnik u. Elektronik, Spezialthemen Elektrotechnik, Electric Power Electronics, Electrical Engineering Special Topics