COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 33 Issue 1/2

Multi-dipole modeling of XLPE cable for electromagnetic field studies in large power systems

– In this paper, modeling of the XLPE cable for electromagnetic signature study at a far distance is proposed. The paper aims to discuss these issues.

Vector magnetic property of electrical steel sheet and its influence on distributions of magnetic field and iron loss for electrical machines

The purpose of this paper is to present the vector magnetic properties of the electrical steel sheet and investigate its influences on the magnetic field and iron loss…

Research on magnetostriction of grain-oriented electrical silicon-steel sheet

The magnetostriction of grain-oriented electrical silicon steel sheet is studied for the magnetic field direction along the rolling direction and deviating from it. The method of…

Induced voltage analysis of superconducting fault current limiter

Saturated core type superconducting fault current limiter (SFCL) can effectively limit the short-circuit current in power system. However, the high induced voltage will occur…

On the equivalence of finite difference and edge element formulations in magnetic field analysis using vector potential

Numerical three-dimensional formulations using vector potential A have been examined for magnetic fields, with emphasis on the finite difference (FDM) and edge element (EEM…

Studies on numerical methodologies for inverse problems and optimizations in China

– The purpose of this paper is to explore the potential challenges in developing numerical methodologies for inverse problems and optimizations.

Minimizing sidelobe levels and facilitating null placements of nonlinear antenna arrays using an improved particle swarm optimization method

The aim of this paper is to explore the potential of particle swarm optimization (PSO) methods for minimizing the sidelobe levels (SLL) and placing null at arbitrary angles of a…

Simplified analysis of iron loss in three-phase transformer considering rotating loss

A simplified method for calculating iron loss of three-phase transformer is proposed in this paper. The rotating iron loss measured from 2-D vector magnetic property measurement…

A split-step-scheme-based precise integration time domain method for solving wave equation

– This paper aims to present a modified precise integration time domain (PITD) method for the numerical solution of 2D scalar wave equation.

Examination of eddy current in laminated core without insulation

In the laminated core of transformer, motor, etc. each electrical steel sheet is usually insulated in order to reduce the eddy current loss. Raw steel sheets without insulation…

Finite element modeling and analyzing for lumbar muscle electrical activity

The purpose of the paper is to present a three-dimensional model and analyze the internal link between surface potential distribution and the electrical activity of lumbar muscles…

An efficient application of PML in fourth-order precise integration time domain method for the numerical solution of Maxwell's equations

The purpose of the paper is to introduce a perfectly matched layer (PML) absorber, based on Berenger's split field PML, to the recently proposed low-dispersion precise integration…

Time-stepping finite element analysis on the influence of rotational flux on local core losses of AC electrical machines

The purpose of the paper is to study the influence of rotational flux on local core losses of the motors, which is difficult to distinguish the iron losses caused by rotational…

Calculation and validation of iron loss in laminated core of power and distribution transformers

– The purpose of this paper is to present a simple method to analyze the iron loss in the laminated core of power and distribution transformers.

Efficient numerical simulation of DC potential drop signals for application to NDT of metallic foam

Direct current potential drop (DCPD) testing is a potential nondestructive testing method for quality control of the metallic foam (MF). The purpose of this paper is to develop a…

A novel two-port network model for RCPT system

The purpose of the paper is to show that how a contactless power transmission system via electromagnetic (EM) resonantly coupling power transmission (RCPT) technology may be…

Thermo inductive nondestructive testing method applied to CFRP

In this paper, a thermo inductive nondestructing testing (NDT) modeling applied to carbon fiber reinforced polymer (CFRP) composite is presented. The paper aims to discuss these…

Accuracy evaluation of three-dimensional FE analysis based on nonconforming voxel element

Three-dimensional (3D) mesh generation for shape optimizations needs long computational time. This makes it difficult to perform 3D shape optimizations. The purpose of this paper…

Multi-objective optimization approach to reliability-based robust global optimization of electromagnetic device

The purpose of this paper is to propose a multi-objective optimization algorithm, which can improve both the performance robustness and the constraint feasibility when the…

A quantum-inspired evolutionary algorithm for global optimizations of inverse problems

The purpose of this paper is to report the investigations on the potential of a new evolutionary algorithm based on probabilistic models – the quantum-inspired evolutionary…

Finite element modeling of current dipoles using direct and subtraction methods for EEG forward problem

The resolution of electroencephalography (EEG) forward problem by the finite element method (FEM) involves the modeling of current dipoles with the singularities. The purpose of…

Determination of the weighted mean path length of the Epstein frame

The purpose of this paper is to investigate the effects of the related factors on the mean path length of the Epstein frame and propose a weighted method based on the different…

Extended progress in TEAM Problem 21 Family

The purpose of the paper is to give a review of TEAM Problem 21, focus on its extended progress in engineering-oriented developments, and report the new benchmarking activity…

Stochastic models for the evaluation of magnetisation faults

The introduction of stochastic deviations due to production faults into the finite element (FE) simulation of electrical machines requires suitable error-model. These models…

Fuzzy logic control to improve the performance of the direct power control based DFIG

A direct power control (DPC) of the doubly-fed induction generator (DFIG) is presented. A new method, which is based on the rotation of the space sector, clockwise or vice versa…

Computer-based modeling of moving cylindrical ferromagnetic billets induction heating

Nowadays, various software is available for simulating physical processes in induction heating. The software is often limited in its ability to simulate the billet movement…

Yet another TOA estimation technique for IR-UWB

– The paper aims to propose a new method for estimating the time of arrival (TOA) of ultra-wideband (UWB) signals under IEEE 802.15.4a multipath channel model.

Modeling, analysis, and motor drive application of quasi-Z-source indirect matrix converter

– The paper aims to propose a new type of three-phase quasi-Z-source indirect matrix converter (QZSIMC) to extend the voltage gain for application in the induction motor drives.

Design of optimal length preview controller

– This paper aims to determine the optimal preview length for the preview state feedback controller and to design the static preview gains for the controller.

Improving the performances of triangular microstrip antenna with multilayered configuration

An improved analytical model is presented to investigate the scattering properties of high T_c superconducting triangular antennas in multilayered configuration. The spectral…

Flexible test bed for the behavioural modelling of power amplifiers

The paper aims to focus on the memory-polynomial model (MPM) as special case of Volterra series, implemented in hardware. The behavior of the MPM is fully proved through a…

Mathematical modeling of a novel bearingless switched reluctance motor

The novel bearingless switched reluctance motor (BSRM) is proposed recently, which is different from the conventional BSRM in the stator structure and suspension winding…

Bi-objective sizing optimization of power converter using genetic algorithms: Application to photovoltaic systems

– This paper aims to focus on the trade-off between losses and converter cost.

Discrete optimal control for robot manipulators

Applying discrete linear optimal control to robot manipulators faces two challenging problems, namely nonlinearity and uncertainty. This paper aims to overcome nonlinearity and…

Magnetic separation of magnetic activated carbons for water treatment and reuse

The aim of this paper is the study of the magnetic separation of pollutants from water by means of a magnetic filter. A magnetic activated carbons nanometric powder that combines…

Unconditionally stable improved meshless methods for electromagnetic time-domain modeling

In this paper, a modified meshless method, as one of the numerical techniques that has recently emerged in the area of computational electromagnetics, is extended to solving…

Detailed and comprehensive mathematical modeling of flying-capacitor stacked multicell multilevel converters

This study aims to propose a mathematical model for stacked multicell converters (SMCs), to be exploited in the analytic determination of natural voltage balancing dynamics of the…

A new analytical approach to predicting cycle-slipping in charge pump PLLs

The linear analysis presented for the charge pump phase locked loops (CPPLLs) becomes inaccurate or incorrect where cycle slipping occurs. In this paper, an analytical approach is…

A new electric dipole model for lightning-aircraft electrodynamics

As commercial and military aircraft continue to be subject to direct lightning flashes, there is a great need to characterize correctly the electrical currents and electric…

UWB signal receiver with sub-Nyquist rate sampling based on compressed sensing

The purpose of this paper is to present a compressed sensing (CS)-based sampling system for ultra-wide-band (UWB) signal. By exploiting the sparsity of signal, this new sampling…

Analysis of a circular microstrip antenna on isotropic or uniaxially anisotropic substrate using neurospectral approach

The paper aims to propose an artificial neural network (ANN) in conjunction with spectral domain formulation for fast and accurate determination of the resonant frequency and…

Adjusted reactive solutions for multiple power flow computations

– The purpose of this work is that of showing some efficient techniques to perform PV-PQ node type switching in multiple power flow computations.

Super-fast multipole method for power frequency electric field in substations

– The purpose of this study is to calculate the frequency electric field in substation.

Simulation of linear dynamic macro model of photo catalytic sensor in SPICE

The flow injection analysis (FIA) technique by Yoon-Chang Kim et al. for the determination of chemical oxygen demand (COD) involves the complete analysis including sampling and…

Analytical modeling of quantization effects in surrounding-gate MOSFETs

– The purpose of this paper is to present an analytical model and simulation for cylindrical gate all around MOSFTEs including quantum effects.

A new modeling method for S-MCSRM driven by three-phase full bridge converter

The S-MCSRM is a two-phase excited switched reluctance motor (SRM), with the short flux path and mutual inductance coupling, which is suitable for the oil submersible pump…

Locally conservative projection methods: benchmarking and practical implementation

– This article presents a locally conservative projection method which aims to preserve the integral of a function and one operator among grad, div, or curl.

A 3-D analytic eddy current model for a finite width conductive plate

A 3-D analytic modeling technique for calculating the eddy current distribution, force and power loss in a conductive plate of finite width and thickness is presented. The derived…

Obituary

2013 Awards for Excellence