COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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3‐D calculations of leakage field and reactance for special transformers
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - - 1998
K.Zakrzewski, M.Lukaniszyn, B.Tomczuk
Two approaches to 3‐D magnetic field calculations for low‐power special transformers are presented in the paper. The application of fast calculation procedures based on the finite difference method, to direct solving of the Poisson and Laplace equations is given. The calculated example deals with the three‐phase leakage transformer. On the other hand, the iterative solution of regularized integral... hiện toàn bộ
A novel PSO‐based technique for optimal design of protective current transformers
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - - 2011
VahidRashtchi, AmirBagheri, ArashShabani, SaeedFazli
PurposeThe purpose of this paper is to present a new approach for the optimal design of protective current transformers (CTs). The proposed technique is applied to the design of typical CTs and results are compared with traditional CT design method and genetic algorithm optimization algorithm.Design/methodology/approachThe aim of CT design is to make current measurements more accurately, particula... hiện toàn bộ
DESIGN OPTIMIZATION OF AN ELECTROSTATIC MICROMOTOR WITH AXIAL FIELD
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - Tập 14 Số 4 - Trang 175-179 - 1995
P.Di Barba, A.Savini, S.Wiak
Historically, the idea of using electrostatic phenomena to produce motion has long stimulated the activity of scientists. Although the power generated by electrostatic motors is modest, the absence of windings and ferromagnetic material makes this kind of device competitive for applications characterized by low levels of torque and reduced volumes. During last years a renewed attention appeared to... hiện toàn bộ
Finite element modeling of a two‐degree of freedom spherical actuator
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - Tập 25 Số 2 - Trang 399-411 - 2006
GrzegorzGalary, BrunoDehez, DamienGrenier
PurposeComputational validation of the new concept of the rotor of the two‐degree of freedom spherical actuator is the aim of this paper.Design/methodology/approachThe first approach study leading to optimize the rotor's structure and parameters, realized using finite element method‐based software is presented. Rotor with two layers and rotor with ferromagnetic so‐called “teeth” crossing external ... hiện toàn bộ
Benchmark problems for optimal shape design for 2D eddy currents
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - Tập 17 Số 4 - Trang 448-459 - 1998
JacekStarzynski, StanislawWincenciak
Two new benchmark inverse problems for eddy currents are proposed. The first originates in the optimal design of the tubular inductive heater. The authors’ goal is to offer a simple problem which will check whether new software is able to minimize a multimodal objective function. The second benchmark is a simplified model of a hardening device. The purpose of this problem is to test the ability of... hiện toàn bộ
INTERACTION OF ELF ELECTROMAGNETIC FIELDS WITH VARIOUS MODELS OF THE HUMAN BODY
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - Tập 14 Số 4 - Trang 275-278 - 1995
A.Karanikolos, P.K.Pantelakis, E.E.Kriezis
The interaction of ELF‐LF electric fields with the human body is examined with a method based on surface charge‐integral equations. The evaluation of the electric field intensity on the body surface is performed for a realistic model of the human body. Two examples for different postures of the model are given.
Efficient modeling approach for optimization of a system based on passive diamagnetic levitation as a platform for bio‐medical applications
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - - 2007
H.Chetouani, B.Delinchant, G.Reyne
PurposeThis paper aims to present a modeling approach of diamagnetic microsystems for design and optimization requirements. It is demonstrated on the stabilisation optimization of a diamagnetic levitation system for biomedical applications.Design/methodology/approachSurface approach was used to compute analytically the magnetic field induction. This modeling is depending on system to design (appro... hiện toàn bộ
Phenomena of additional cogging torque components influenced by stator lamination stacking methods in PM motors
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - - 2009
LovrencGašparin, AndrejČernigoj, RastkoFišer
PurposeThe purpose of this paper is to estimate and evaluate how cogging torque in permanent magnet (PM) motor designs is sensitive to the number of applied interlocks in stator back‐iron, which is a standard method for stator lamination stacking.Design/methodology/approachThe PM motors exhibit inherent cogging torque, which creates torque ripple and prevents smooth rotation of the rotor resulting... hiện toàn bộ
Effect of non‐uniform resistivity on eddy‐currents in the rotor bar
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - - 1997
Mirosl‐awDcabrowski
Develops the algorithms for numerical analysis of current density distribution in squirrel‐cage rotor bar of arbitrary shape, taking the non‐uniform resistivity into account. Gives the structure of a computer program for this strong non‐linear problem. Presents, as an example, the results of investigations of wedge‐shaped bar.
TỔN THẤT BỔ SUNG TRONG KHU VỰC CHỒNG CHẤT CỦA LÒ XOÁY Dịch bởi AI
COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - Tập 13 Số 1 - Trang 101-104 - 1994
AnteRezic, ZvonomirValkovic
Ảnh hưởng của chiều dài chồng chéo và thiết kế chồng chéo lên tổn thất lõi và dòng điện từ hóa của lõi biến áp hai chân đơn pha đã được nghiên cứu. Cuộc điều tra được thực hiện một cách thực nghiệm trên các mô hình tỷ lệ và số học, sử dụng phương pháp phần tử hữu hạn 2D. Hai loại chồng chéo, chồng chéo cắt góc và chồng chéo lệch đã được nghiên cứu. Đã quan sát thấy rằng ảnh hưởng của chiều dài chồ... hiện toàn bộ
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