...Hajime Suzuki; Yoshifumi Okamoto Purpose This study aims to propose a permanent magnet (PM) magnetization estimation method that utilizes the induced voltage measured by a pickup coil. Design/methodology/approach To efficiently minimize the objective function, a gradient-based optimization...

...Bojana Petkovć; Marek Ziolkowski; Hannes Toepfer; Jens Haueisen Purpose The purpose of this paper is to derive a new stress tensor for calculating the Lorentz force acting on an arbitrarily shaped nonmagnetic conductive specimen moving in the field of a permanent magnet. The stress tensor allows...

...Ahmed Masmoudi Purpose The purpose of this paper is to introduce an aid for teaching transverse flux permanent magnet machines (TFPMs) with emphasis on their torque production. Design/methodology/approach The Lorentz force law is applied to fictitious current loops emulating the permanent...

... devices made of iron and permanent magnet. Design/methodology/approach Topology optimization methods aim at finding the optimal distribution of some materials in cells subdividing a design space, regarding a specific objective function. This paper suggests to consider that each cell contains...

... utilizing permanent magnet (PM) materials. Furthermore, the servo‐characteristics of these classes of machines are generally not as good as PM actuators. Generally, two‐DoF PM actuators can be separated into two classes: 1. stacked actuators with separate z‐ and θ‐magnetization...

...Ahmed Masmoudi; Z.Q. Zhu; Z. Azar Purpose The purpose of this paper is to investigate the influence of end‐effect and cross‐coupling on the torque‐speed characteristics of switched flux permanent magnet (SFPM) machines. Design/methodology/approach The torque‐speed characteristics are predicted...

...Ahmed Masmoudi; Łukasz Drązikowski; Włodzimierz Koczara Purpose This article seeks to present the simple and easy to manufacture design of a permanent magnet generator based on coreless windings. An example is shown of basic calculations based on an equivalent magnetic circuit. Finally...

...Ahmed Masmoudi; J.T. Chen; Z.Q. Zhu Purpose The purpose of this paper is to compare the performance of conventional, novel E‐ and C‐core switched‐flux permanent magnet (SFPM) machines having different combinations of stator and rotor pole numbers, with particular reference to the conductor...

...J.F. Charpentier; G. Lemarquand This paper deals with a way of computation of the mechanical behavior of permanent magnet synchronous couplings. This method is based on the calculation of the forces between the magnets of the device. The formulation of these forces is based on magnetic pole theory...

...Yuriy N. Zhilichev The Grinberg method is used to derive general 2D and 3D analytical solutions of the magnetic field problem in the slotless permanent magnet machines. The machines with the internal and external rotors are presented. The radial and unidirectional magnetisation of the poles...

...Krystyn Pawluk; Zdzislaw Życki Magnetic field analysis of a permanent magnet put in free space can be effectively performed by a boundary‐integral technique completed with an iterative procedure following a non‐linear magnetic curve of magnetic material. The general idea of the boundary‐integral...

...S.C. Mukhopadhyay; T. Ohji; M. Iwahara; S. Yamada; F. Matsumura This paper reports on the development of a repulsive type magnetic bearing system and the importance of permanent magnet (PM) configuration on the attenuation of radial disturbance. A new configuration of the permanent magnet...