COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 37 Issue 3

A methodology for the optimized design of power transformer insulation system

Hugo Rodriguez-Ignacio, Xose M. Lopez-Fernandez, Casimiro Álvarez-Mariño

The purpose of this paper is to present a methodology based on an optimizer linked with electric finite element method (FEM) for automating the optimized design of power…

Measurements show need for transformer core joint details in finite element modelling of GIC and DC effects

Hilary Kudzai Chisepo, Leslie David Borrill, Charles Trevor Gaunt

This paper aims to improve the finite element modelling of transformers subjected to DC excitation, by including core joint details.

Experimental evaluation of electric and magnetic properties of structural steel

Phamella Reinert Tamanini Piccoli, Sérgio Henrique Lopes Cabral, Luiz Fernando de Oliveira, Odirlan Iaronka, Diogo Fernando Harmel, João Paulo Vieira, João Egídio Sapeli

This paper aims to present the proposition of a new experimental method for obtaining very crucial data of the structural steel that is used in the tank of oil filled power…

Network modelling of dry-type transformer cooling systems

Andrea Cremasco, Wei Wu, Andreas Blaszczyk, Bogdan Cranganu-Cretu

The application of dry-type transformers is growing in the market because the technology is non-flammable, safer and environmentally friendly. However, the unit dimensions are…

A new metaheuristic unscented Kalman filter for state vector estimation of the induction motor based on Ant Lion optimizer

Marouane Rayyam, Malika Zazi, Youssef Barradi

To improve sensorless control of induction motor using Kalman filtering family, this paper aims to introduce a new metaheuristic optimizer algorithm for online rotor speed and…

Statistical analysis of peak inrush current: a case study

Przemyslaw Markiewicz, Roman Sikora, Wieslawa Pabjanczyk

The purpose of this paper is to estimate that the start-up current parameters are stochastic or not. Electronic equipment in luminaries significantly improves their luminous…

An analytical approach and finite element evaluation of leakage fluxes of the PMs in a non-slotted axial flux permanent magnet machine

Reza Mirzahosseini, Ahmad Darabi, Mohsen Assili

Consideration of leakage fluxes in the preliminary design stage of a machine is important for accurate determination of machine dimensions and prediction of performance…

2-D quasi-static Fourier series solution for a linear induction motor

Konrad Woronowicz, Majd Abdelqader, Ryszard Palka, Jordan Morelli

This paper aims to present a method for calculating electromagnetic fields, eddy currents and forces for a quasi-static two-dimensional (2-D) model of linear induction motors…

Numerical study of influential factors on partial discharges in HVDC XLPE cables

Miao He, Miao Hao, George Chen, Wenpeng Li, Chong Zhang, Xin Chen, Haitian Wang, Mingyu Zhou, Xianzhang Lei

For the dramatically developed high voltage direct current (HVDC) power transmission, HVDC cables play a vital role in the power transmission across seas and connections with…

Miniaturized quad-band coplanar-fed monopole antenna for tablet computers

Sangeetha Subbaraj, Malathi Kanagasabai, Gulam Nabi Alsath Mohammed, Yogeshwari Panneer Selvam, Saffrine Kingsly, Ramana Rao Yeragudipati Venkata

This paper aims to present the design of a compact quad-band coplanar-fed monopole antenna for tablet computer applications.

Analytical way of transforming the hyperbolic hysteresis model into the T(x) model

Jeno Takacs

This paper aims to present an analytical way of formulating the vital parameters of an equivalent hysteresis loop of a composite, multi-component magnetic substance. By using the…

Modeling and simulation of saturated double rotor induction machine

Koosha Choobdari Omran, Ali Mosallanejad

Double rotor induction machine (DRIM) is a particular type of induction machine (IM) that has been introduced to improve the parameters of the conventional IM. The purpose of this…

New advanced concept of the flying capacitor asymmetric multilevel voltage source inverter

Henda Jabberi, Faouzi Ben Ammar

To improve the voltage quality in AC adjustable high-power-speed-drive applications, the purpose of the paper is to provide a large number of output levels without increasing the…

Spatial correlation-aware statistical dual-threshold voltage design of template-based asynchronous circuits

Behnam Ghavami

Power consumption is a top priority in high-performance asynchronous circuit design today. The purpose of this study is to provide a spatial correlation-aware statistical…

Frequency response analysis of periodically time varying circuits

Igor Korotyeyev

The purpose of this paper is to introduce a method for the analysis of steady-state processes in periodically time varying circuits. The method is based on a new definition of…

Fast and high-precision calculation of earth return mutual impedance between conductors over a multilayered soil

Junjie Ma

Solutions for the earth return mutual impedance play an important role in analyzing couplings of multi-conductor systems. Generally, the mutual impedance is approximated by…

Modeling and verification of the equivalent circuit for high temperature superconducting partial-core transformer with ReBCO-coated conductors

Daoyu Hu, Jianwen Zhang, Feng Gu, Zhuyong Li

The purpose of this study is to propose a modeling method of the equivalent circuit for a new type of high-temperature superconducting partial-core transformer (HTS-PCT) made of…

A simple analysis of flying capacitor converter

Shirali Kadyrov, Piotr Sebastian Skrzypacz, Yakov Lvovich Familiant

The paper aims to emphasise how switched systems can be analysed with elementary techniques which require only undergraduate-level linear algebra and differential equations. It is…

Performance analysis of segmented rotor switched reluctance motors with three types of winding connections for belt-driven starter generators of hybrid electric vehicles

Xiaodong Sun, Zhuicai Zhou, Long Chen, Zebin Yang, Shouyi Han

Inductance, torque and iron loss are the key parameters of switched reluctance motors for belt-driven starter generators. This paper aims to present the analysis of a segmented…

Wideband DOA estimation based on incoherent signal subspace method

Zeeshan Ahmad, Yaoliang Song, Qiang Du

Direction-of-arrival (DOA) estimation for wideband sources has attracted a growing interest in the recent decade because wideband sources are incorporated in many real-world…

Comparing unscented transformation and point estimate method for probabilistic power flow computation

Qing Xiao, Shaowu Zhou

Unscented transformation (UT) and point estimate method (PEM) are two efficient algorithms for probabilistic power flow (PPF) computation. This paper aims to show the relevance…