Determination of Permanent Magnet Characteristics by Single‐shot Test

Życki, Z.; Sokolnicki, Eugeniusz

doi:10.1108/eb051869

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“…The observed deformations are illustrated by the curve u(t) (see Figure 5). The experiment described in the paper is a continuation of the research aiming to verify measurement methods presented in Zycki (1991Zycki ( , 1995 and Zycki and Sokolnicki (1994) as well as calculation methods of permanent magnets described in Pawluk (1998a, 1998b) and Pawluk and Zycki (2000). Both statements that follow are related, first of all, to the considered magnetic system and to examined magnetic materials.…”

Section: Compel 192 564mentioning

confidence: 95%

“…The parameters and magnetic curves of permanent magnets can be determined by means of the single-pulse method described in Zycki and Sokolnicki (1994) as well as by the multiple-pulse method presented in Zycki (1995). Both methods consist of recording and suitable processing of the finite set of discrete COMPEL 19,2 562 parameters corresponding to the specific points of the real demagnetization curve and respective points of the curves published by magnet catalogues.…”

Section: Aim Of the Work And The Features Of Research Objectsmentioning

confidence: 99%

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Electromagnetic devices

Wiak¹

2000

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

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. CHAPTER 2 ELECTROMAGNETIC DEVICES Introductory remarksA knowledge of electromagnetism is necessary for understanding the operation of electromechanical converters and electronic systems in general, such as sensors, solid state devices and integrated circuits; also electromagnetic compatibility represents an increasingly important topic. There is a quite high degree of attention to applied electromagnetism due to the increasing number of new topics. One could mention subjects like mechatronics, superconductivity, microelectronics and biotechnologies among emerging fields in which electromagnetism plays an essential role.The complex geometry of devices and the non-linearity of magnetic circuits of electromechanical converters represent unfavourable factors for field calculation. A very small air-gap with a different number of slots in primary and secondary parts of a converter causes high gradients in the field. Therefore, a fine discretization of the field region and, sometimes, the coupling of different methodologies of analysis are necessary. The first group of papers is focused on applying field theory and advanced software to the analysis of steady state and transient performances of induction motors. Computer simulations of starting process are carried out by means of circuit and field method and compared with laboratory tests, leading to the interpretation of phenomena as motor parametric resonance. The field-circuit calculation of output characteristics of a four-speed induction motor is also achieved. Special attention is paid to skewed-cage induction motor for which a quasi-3D finite element method is proposed. The study of anomalies in magnetic field distribution due to broken rotor bars is performed for different load conditions. The use of electromagnetic software linked with electric circuit equations enables determination of motor output parameters for voltage supply. Such an approach leads to an accurate estimation of the magnetic saturation of the core. Downloaded by UNIVERSITY OF LIVERPOOL At 05:04 28 June 2016 (PT)The second group of papers is devoted to general and specific problems of reluctance motors. The application of artificial neural networks (ANN) in modelling...

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Section: Compel 192 564mentioning

confidence: 95%

Section: Aim Of the Work And The Features Of Research Objectsmentioning

confidence: 99%