COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 35 Issue 6

Programmable omega-based complex medium for beam steering applications

Michail G. Christodoulou, Antonios X. Lalas, Nikolaos V. Kantartzis, Theodoros D. Tsiboukis

Metamaterials have been utilised in several exciting configurations such as tuneable reflectors, reconfigurable absorbers, and programmable modulators, triggering intense research…

Vibration and acoustic noise of industrial inductors associated to converters in the railway domain: Design and material impacts

Bruno Iamamura, Mathieu Rossi, Michel Hecquet, Vincent Lanfranchi, Sylvain Recorbet, Florence Tridon

The purpose of this paper is to present an original study of industrial inductors with different air-gap materials in order to reduce the vibration and noise of inductors…

Study of the performance characteristics of a surface permanent magnet motor at various magnetization patterns

Lidija Petkovska, Goga Vladimir Cvetkovski, Paul Lefley

In the present paper the influence of the magnetization patterns of rotor magnets on the performance characteristics of a surface permanent magnet (SPM) motor has been…

Analysis of a magnetic gear integrated Halbach generator

Carlos Guilherme da Costa Neves, Aly Ferreira Flores Filho

The purpose of this paper is to simulate a magnetic gear full integrated generator (MGFIG) to apply in wind power generation.

Multiphase permanent magnet synchronous motors with fractional slot windings: The future of low speed drives?

Cezary Jedryczka, Wojciech Szelag, Zbigniew Jerry Piech

The purpose of this paper is to investigate advantages of multiphase permanent magnet synchronous motors (PMSM) with fractional slot concentrated windings (FSCW). The…

Analysis and design of a high power density permanent magnet-assisted synchronous reluctance machine with low-cost ferrite magnets for EVs/HEVs

Xiping Liu, Ya Li, Zhangqi Liu, Tao Ling, Zhenhua Luo

The purpose of this paper is to propose a permanent magnet-assisted synchronous reluctance machine (PMASynRM) using ferrite magnets with the same power density as rare-earth PM…

Numerical verification of Turowski’s coefficient

Hugo Rodriguez-Ignacio, Xose M. Lopez-Fernandez

The purpose of this paper is the numerical verification of the linearization coefficient a_p proposed by Turowski for the calculation of the electromagnetic field distribution and…

EV drive efficiency of traction motor considering regenerative braking according to various motor cores

Hokyung Shim, Jihyun Kim, Jungpyo Hong

The purpose of this paper is to study the electric vehicle (EV) drive efficiency of a traction motor considering regenerative braking according to various motor cores.

The influence of localized mechanical stresses on the non-homogeneous distribution of electrical conductivity

Ewa Napieralska-Juszczak, Piotr Napieralski, Krzysztof Komeza, Youcef Zeroukhi

The purpose of this paper is to determine the physical design parameters that influence the total resistance of a twisted conductor (cable). One of the physical parameters…

The prediction of iron losses under PWM excitation using the classical Preisach model

Sajid Hussain, David Lowther

The losses incurred in ferromagnetic materials under PWM excitations must be predicted accurately to optimize the design of modern electrical machines. The purpose of this paper…

Internal inductance of a conductor of rectangular cross-section using the proper generalized decomposition

Manuel Pineda-Sanchez, Angel Sapena-Baño, Juan Perez-Cruz, Javier Martinez-Roman, Ruben Puche-Panadero, Martin Riera-Guasp

Rectangular conductors play an important role in planar transmission line structures, multiconductor transmission lines, in power transmission and distribution systems, LCL…

Numerical modelling of a flux-barrier SynchRel motor including punching effect

Marcin Lefik, Zbigniew Gmyrek

Estimating the punching process’s impact on the operating parameters of an electrical motor is a special problem especially in the case of fractional power motors. The purpose of…

Direct synthesis of equivalent circuits from reduced FE models using proper orthogonal decomposition

Toshihito Shimotani, Yuki Sato, Hajime Igarashi

The purpose of this paper is to propose a fast synthesis method of the equivalent circuits of electromagnetic devices using model order reduction. Finite element method (FEM) has…

Effects of driving modes on permanent magnet motor electromagnetic and temperature fields at limit conditions

Hongbo Qiu, Wenfei Yu, Bingxia Tang, Weili Li, Cunxiang Yang, Yanfeng Wang

Taking a 2,000 r/min 10 kW permanent magnet motor as an example, the purpose of this paper is to study the influence of driving modes on the performance of permanent magnet motor…

Linear quadratic-based optimal current control of BLDC motor minimizing control error and considering accurate finite element model

Jakub Bernat, Slawomir Jan Stepien, Artur Stranz, Paulina Superczynska

Brushless DC (BLDC) motors are commonly used in the industry. The improvement of power switching electronic elements, especially integrated circuits, has led to the development…

Voltage distribution in inorganic insulation windings for high-temperature motors

Daniel Roger, Vadim Iosf, Sylvain Babicz

The purpose of this paper is to present a method for computing voltage spikes endured by the insulation of the first coils of high-temperature (HT°) synchronous machines fed by…

Magnetic forces applied to the tank walls of a large power transformer

Pawel Zygmunt Witczak, Michal Swiatkowski

The purpose of this paper is to calculate forces created by the magnetic leakage field, which are directly applied to tank walls via magnetic shield.

Approximations for Brillouin and its reverse function

Jeno Takacs

The mathematical complexity of the B_J(x) Brillouin function makes it unsuitable for most calculations and its application difficult for computer programming in magnetism. Here…