Yan / Zhang / Peng Electromagnetic Linear Machines with Dual Halbach Array

Design and Analysis
1. Auflage 2017
ISBN: 978-981-10-2309-5
Verlag: Springer Nature Singapore
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 142 Seiten

This book extends the conventional two-dimensional (2D) magnet arrangement into 3D pattern for permanent magnet linear machines for the first time, and proposes a novel dual Halbach array. It can not only effectively increase the radial component of magnetic flux density and output force of tubular linear machines, but also significantly reduce the axial flux density, radial force and thus system vibrations and noises. The book is also the first to address the fundamentals and provide a summary of conventional arrays, as well as novel concepts for PM pole design in electric linear machines. It covers theoretical study, numerical simulation, design optimization and experimental works systematically. The design concept and analytical approaches can be implemented to other linear and rotary machines with similar structures. The book will be of interest to academics, researchers, R&D engineers and graduate students in electronic engineering and mechanical engineering who wish to learn the core principles, methods, and applications of linear and rotary machines.

Autoren/Hrsg.

Yan, Liang

Zhang, Lu

Peng, Juanjuan

Zhang, Lei

Jiao, Zongxia

Inhaltsverzeichnis

1;Foreword;6
2;Preface;8
3;Contents;11
4;Acronyms;14
5;List of Figures;15
6;List of Tables;18
7;1 Introduction;19
7.1;1.1 History of Linear Machine;19
7.2;1.2 Advantages of Linear Machine;20
7.3;1.3 Applications of Linear Machines;20
7.3.1;1.3.1 Linear Machines in Military Field;21
7.3.2;1.3.2 Linear Machines in Civilian Field;21
7.3.3;1.3.3 Linear Machines in Logistics;23
7.3.4;1.3.4 Linear Machines in Industrial Automation;25
7.3.5;1.3.5 Linear Machines in Rail Transportation;25
7.4;1.4 Magnet Patterns of Linear Machines;25
7.5;1.5 Objective and Scope of the Study;30
7.6;1.6 Book Organization;33
7.7;References;33
8;2 Formulation of Magnetic Field;35
8.1;2.1 Introduction;35
8.2;2.2 System Structure and Operating Principle;36
8.2.1;2.2.1 System Overall Structure;36
8.2.2;2.2.2 Operating Principle;38
8.3;2.3 Governing Equations of Flux Field;38
8.3.1;2.3.1 Assumptions;39
8.3.2;2.3.2 Magnetic Characterization of Materials;39
8.3.3;2.3.3 Governing Equations;39
8.4;2.4 General Solutions to Magnetic Field;40
8.4.1;2.4.1 General Solution to Laplace's Equation;40
8.4.2;2.4.2 General Solution to Poisson's Equation;43
8.4.3;2.4.3 Solutions to Flux Density Distribution;45
8.4.4;2.4.4 Boundary Conditions;46
8.5;2.5 Finite Element Analysis and Results;46
8.5.1;2.5.1 Overall Field Distribution;46
8.5.2;2.5.2 Magnetic Field Variation in the Magnet Region;48
8.5.3;2.5.3 Magnetic Field Variation in the Winding Region;49
8.6;2.6 Conclusion;51
8.7;References;51
9;3 Mathematical Modeling and Analysis of Force Output;53
9.1;3.1 Introduction;53
9.2;3.2 Formulation of Force Generation;55
9.2.1;3.2.1 Assumptions;55
9.2.2;3.2.2 Thrust for Single-Phase Winding Pattern;55
9.2.3;3.2.3 Thrust for Double-Phase Winding Pattern;58
9.2.4;3.2.4 Thrust for Three-Phase Winding Pattern;60
9.3;3.3 Simulation and Validation of Force Model;65
9.3.1;3.3.1 Force Variation for Single-Phase Machine;66
9.3.2;3.3.2 Force Variation for Double-Phase Machine;66
9.3.3;3.3.3 Force Variation for Three-Phase Machine;67
9.4;3.4 Conclusion;69
9.5;References;69
10;4 Armature Reaction Field and Inductance;71
10.1;4.1 Introduction;71
10.2;4.2 Formulation of Armature Reaction Field;72
10.2.1;4.2.1 Assumptions;72
10.2.2;4.2.2 Governing Equations;72
10.2.3;4.2.3 Current Source System;73
10.2.4;4.2.4 Analytical Solutions of Magnetic Field;75
10.3;4.3 Winding Inductance;80
10.4;4.4 Validation by Finite Element Method;81
10.4.1;4.4.1 Armature Reaction Field Validation;83
10.4.2;4.4.2 Inductance Validation;85
10.4.3;4.4.3 Comparison with Finite Length Model;85
10.5;4.5 Conclusion;85
10.6;References;85
11;5 Machine Design and Optimization;87
11.1;5.1 Introduction;87
11.2;5.2 Parameter Design of a Single Phase Machine;88
11.2.1;5.2.1 Penalty Method;89
11.2.2;5.2.2 Scanning Method;91
11.2.3;5.2.3 Results and Discussion;92
11.3;5.3 Parameter Design of Three-Phase Machine;93
11.3.1;5.3.1 Geometric Parameters of the Linear Machine;93
11.3.2;5.3.2 Interdependence of Structure Parameter;94
11.3.3;5.3.3 Determination of Independent Parameters;99
11.3.4;5.3.4 Determination of Dependent Parameters;100
11.4;5.4 Design of Back Iron;102
11.4.1;5.4.1 Magnetic Circuits of Four Patterns;102
11.4.2;5.4.2 Magnetic Field Variation in 3D Space;102
11.4.3;5.4.3 Overall Field Distribution of Four Patterns;105
11.4.4;5.4.4 Comparative Study of Field Distributions of Four Patterns;105
11.4.5;5.4.5 Force Variation;110
11.5;5.5 Conclusion;111
11.6;References;115
12;6 Research Prototype and Experiments;116
12.1;6.1 Research Prototype;116
12.2;6.2 Experimental Investigation on Magnetic Field;118
12.2.1;6.2.1 Experimental Apparatus of Magnetic Field Measurement;118
12.2.2;6.2.2 Magnetic Field Variation in the Radial Direction;119
12.2.3;6.2.3 Magnetic Field Variation in the Axial Direction;120
12.2.4;6.2.4 Magnetic Field Variation in the Circumferential Direction;121
12.2.5;6.2.5 Prediction of Machine Performance;122
12.3;6.3 Experiments on Force Output;126
12.3.1;6.3.1 Measuring Platform of Force Output;126
12.3.2;6.3.2 Experiments on Force Output and Comparison;127
12.4;6.4 Experimental Investigation on Armature Reaction Field;128
12.5;6.5 Experimental Investigation on Inductance and Comparison;130
12.6;6.6 Conclusion;136
12.7;References;136
13;7 Conclusion;138
14;Index;140