scispace - formally typeset
Search or ask a question
Topic

Magnetic core

About: Magnetic core is a research topic. Over the lifetime, 30011 publications have been published within this topic receiving 155247 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a zerovoltage switching (ZVS) phase shift full-bridge (PSFB) step-up converter with integrated magnetic structure is proposed, where the external inductor and transformer are integrated into one magnetic core and then the coupling coefficients are analyzed.
Abstract: A zero-voltage switching (ZVS) phase shift full-bridge (PSFB) step-up converter with integrated magnetic structure is proposed. In order to improve ZVS ranges, an external inductor is imposed. Especially, to save the volume of the magnetic core of external inductor, the external inductor and transformer are integrated into one magnetic core and then the coupling is formed. Furthermore, coupling coefficients are analysed and can be adjusted by the gaps in the three legs of magnetic core. Besides, the fluxes and the maximum flux density in the three legs of magnetic core are also analysed. Finally, a 100 W prototype converter is made and the experimental results are given to verify the analysis.

49 citations

Journal ArticleDOI
TL;DR: In this article, a two-dimensional multislice time-stepping finite element method of skewed-rotor induction motors is presented to solve such complicated 3-D problems, where the network of the rotor cage is coupled to finite-element equations so that the interbar currents in the rotor can be taken into account.
Abstract: In order to include the interbar currents of skewed-rotor inductor motors in finite-element analysis, a three-dimensional (3-D) model is usually necessary. In this paper a two-dimensional multislice time-stepping finite element method of skewed-rotor induction motors is presented to solve such complicated 3-D problems. It is shown that the network of the rotor cage is coupled to finite-element equations so that the interbar currents in the rotor can be taken into account. By arranging the unknowns and mesh-current equations ingeniously, the resultant coefficient matrix of the global system equations are made symmetrical. Compared with 3-D finite-element methods, the computation time for solving field equations with the proposed method is significantly shorter. The model can be used to estimate the high-order harmonic stray losses in induction motors. A comparison between computed and tested results is also given.

49 citations

Patent
Hiroshi Seo1, Takamasa Hase1
20 Mar 2009
TL;DR: A fixer includes a fixing member with a rotary heat generator, a pressure member, an excitation coil disposed facing a heat generation layer of the rotary generator to generate magnetic flux that partially counteracts the magnetic flux generated by the excitation coils, and a second magnetic core disposed in a second area that is outside a loop of the demagnetization coil unit and enclosed by the coil as discussed by the authors.
Abstract: A fixer includes a fixing member with a rotary heat generator, a pressure member, an excitation coil disposed facing a heat generation layer of the rotary heat generator to generate magnetic flux that inductively heats the heat generation layer, a loop-shaped demagnetization coil unit disposed facing the heat generation layer to generate magnetic flux that partly counteracts the magnetic flux generated by the excitation coil, a first magnetic core disposed in a first area that is enclosed by both the excitation coil and the demagnetization coil unit, and a second magnetic core disposed in a second area that is outside a loop of the demagnetization coil unit and enclosed by the excitation coil. The first magnetic core and the second magnetic core are magnetically continuous in a rotary axial direction of the rotary heat generator. A fixing method fixes an image on the sheet used in a fixer.

49 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed a new magnetorheological (MR) damper which can produce sufficient damping force within a few millisecond, which can be achieved by reducing the eddy current around the magnetic field zone.

49 citations

Journal ArticleDOI
TL;DR: A survey of amorphous magnetic alloy systems which are of interest for applications in electronics can be found in this article, where the following applications are mainly discussed: 400 Hz transformers, inductive components for switched -mode power supplies, magnetic shieldings, elasto-magnetic transducers, magnetic heads, and magnetic springs.
Abstract: This paper begins with a survey of amorphous magnetic alloy systems which are of interest for applications in electronics. Saturation, permeability, losses, shapes of the hysteresis loop, technological and elasto-magnetic properties are considered in comparison to crystalline alloys. The following applications are mainly discussed: 400 Hz transformers, inductive components for switched - mode power supplies, magnetic shieldings, elasto-magnetic transducers, magnetic heads, and magnetic springs. Basic possibilities and limitations are reviewed in an outlook.

49 citations


Network Information
Related Topics (5)
Electromagnetic coil
187.8K papers, 1.1M citations
88% related
Voltage
296.3K papers, 1.7M citations
86% related
Capacitor
166.6K papers, 1.4M citations
84% related
Rotor (electric)
179.9K papers, 1.2M citations
84% related
Electric power system
133K papers, 1.7M citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202365
2022163
2021309
2020900
20191,254
20181,426