Institute of Electrical Engineering,Chinese Academy of Sciences


Practical Design of Magnetostatic Structure Using Numerical Simulation

With the development of science and technology, the different types of electromagnetic equipment used in these fields need various kinds of high field magnetic systems with different characteristics in terns of intensity, scale, and quality. These kinds of high field magnetic systems typically have complicated spatial and temporal distributions of their magnetic fields. The high demands for their application in the fields of scientific devices and medical instruments, and other industrial applications, have led to continuous innovation in electromagnetic equipment. This variety of inventions requires various physical and mathematical models to analyze the structures of electromagnetic equipment. The research into optimal design theories and methods has expanded into a new research field, leading to the combination of theoretical analysis and practical application. Advanced numerical analysis is making a critical contribution to the optimization of the various engineering technologies.

High magnetic field systems are the most fundamental part and the very core of some scientific devices and medical instruments. In order to save on material costs and achieve the correct combination of magnetic configuration and advanced digital control techniques, more effective theories and methods of magnetic structure design are required. Based on the different applications of static magnetic structures, this book introduces and explains how to combine the optimization theory of complicated magnetic structures with advanced magnetic analysis techniques to solve design problems in magnetic structures. Considering the practical implementations, there is a description of the parametric relationships of magnetic structures, and the principles and methods for designing various magnetic structures are detailed in this book. Using finite element analysis, integral methods for determining the comprehensive current distribution in conductors and integral methods for determining the magnetic field in magnets that have a mixture of ferromagnetic and electric conductors are used to resolve the complicated positive and negative problems in static magnetic configurations. The research detailed in this book is focused on design theories in the areas of superconductivity, electromagnetism, and permanent magnetism, so that the requirements of the various scientific devices, biological and medical instruments, and special electrical engineering equipment are met.

The characteristics and the effective usage of materials are the key to producing high electromagnetic fields. The electromagnetic properties and mechanical properties have a direct impact on the intrinsic characteristics of the magnet, especially for superconductor magnetic systems. Therefore, the electrical–mechanical effects of the magnet are the key to the operation and comprehensive high magnetic field distribution. In this book, the basic characteristics of different materials, the detailed modeling of electromagnetic–mechanic coupling problems, and analysis and calculation techniques for electromagnetic forces are all included.

The author of this book has conducted comprehensive research for many years on static magnetism structures and on the basic science and technology of magnets to operate at high magnetic fields. He is responsible for significant research achievements on the stability of superconductor magnets, electrical–mechanical effects, the quench mechanism for superconductor materials, AC loss of superconductor wire/tape, manufacturing processes for supporting structures of multi-coil magnets, cryogenic and nonlinear normal zone propagation, finite element analysis techniques, optimization and algorithms for comprehensive electromagnetic structures, special cryogenics for extreme high field magnets, etc. He has made breakthroughs in some research fields and succeeded in designing various high magnetic field systems, which have been applied in scientific devices, electrical engineering equipment, magnetic resonance imaging (MRI), and magnetic detectors for space applications. He is the China National Funds for Distinguished Young Scientists, “One Hundred Talent People” of the Chinese Academy of Sciences, and one of the New Century Excellent Talents in China. He is the author of more than 260 publications in internationally respected scientific journals and has obtained over 90 patents. The author has gathered plentiful experience in the fields of design, manufacturing, and operation of magnets.

The theories and methods in this book range from the basic to the advanced and are written step by step. It can be used as a reference for researchers and engineering practitioners, especially for those in the research fields of electrical engineering, high magnetic fields, scientific devices, high energy accelerators, controlled thermonuclear fusion, MRI, etc. At the same time, this book has significant value for teaching staff and senior students involved in higher education in this area.