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Beschreibung Efficiently Modeling Soft Magnetic Materials for Transformers, Actuators and Rotating Electrical Machines (Aachener Schriftenreihe zur Elektromagnetischen Energiewandlung, Band 28)
The assemblage of individual soft magnetic laminations constitutes the magnetic core of an electrical machine, which is tailored to guide and amplify the magnetic flux distribution. This why the soft magnetic material significantly influences the operating characteristics and efficiency of electrical machines.The complex flux waveforms in electrical machines exacerbate the development of appropriate methods for predicting the iron loss and the magnetic field distribution. There exist so far no macroscopic material model that considers simultaneously vector hysteresis, the laminated structure and the issue of parameter identification. As a solution, an energy-based vector hysteresis model with magnetic anisotropy and different methods to solve the diffusion problem inside the laminations are developed. This so-called "semi-physical lamination model" allows one to replicate the magnetization behavior of soft magnetic materials without limitation regarding the excitation waveforms by using quasi-static measured data for parameter identification. This is verified for sinusoidal magnetic polarization waveforms up to 1 kHz and for non-sinusoidal and PWM-like waveforms.Direct incorporation of the model into 2-D FEA of electrical machines is rather technical and cumbersome and makes it necessary to modify significantly the FE code. For this purpose, a pragmatic two-step homogenization approach is developed, which describes the magnetization behavior averaged over the cross-section. This method turns out to be quite accurate and efficient in practice, and entails no implementation in the FE code.Application examples of magnetic field and loss calculation using the homogenized model in a three-limb transformer and a PMSm conclude this thesis.
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Efficiently Modeling Soft Magnetic Materials for ~ Efficiently Modeling Soft Magnetic Materials for Transformers, Actuators and Rotating Electrical Machines (Aachener Schriftenreihe zur Elektromagnetischen Energiewandlung, Band 28) / Steentjes, Simon / ISBN: 9783844056976 / Kostenloser Versand fĂĽr alle BĂĽcher mit Versand und Verkauf duch .
Efficiently modeling soft magnetic materials for ~ TY - THES AU - Steentjes, Simon TI - Efficiently modeling soft magnetic materials for transformers, actuators and rotating electrical machines VL - 28 PB - RWTH Aachen University VL - Dissertation CY - Aachen M1 - RWTH-2019-01774 SN - 3-8440-5697-1 T2 - Aachener Schriftenreihe zur Elektromagnetischen Energiewandlung SP - xii, 302 Seiten : 175 Illustrationen PY - 2018 N1 - Dissertation, RWTH .
Efficiently modeling soft magnetic materials for ~ Efficiently modeling soft magnetic materials for transformers, actuators and rotating electrical machines. Steentjes, Simon RWTH *. 2018. Verantwortlichkeitsangabe Simon Steentjes. Impressum Aachen : Shaker Verlag 2018. Umfang xii, 302 Seiten : 175 Illustrationen. ISBN 3-8440-5697-1, 978-3-8440-5697-6. Reihe Aachener Schriftenreihe zur Elektromagnetischen Energiewandlung ; 28
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Soft Magnetic Materials for High Frequency High Power ~ Soft magnetic materials are commonly used as the core materials of the transformers and inductors due to their superior magnetic properties. They play a key role in designing high performance power electronic systems. This paper presents a literature survey on the soft magnetic materials used in the HFHPD transformers and inductors, including electrical sheets, soft ferrites and amorphous .
Magnetic Transformer - an overview / ScienceDirect Topics ~ Conventional magnetic transformers work on an electrical-magnetic-electrical basis using the magnetic domain for electrical isolation. The acoustic transformer uses an acoustic path to get isolation. The high voltage breakdown and low electrical conductance associated with ceramics surpasses isolation characteristics of magnetic approaches. Additionally, the acoustic transformer is simple. A .
Simulation-design software for transformers and reactors ~ Developing new generations of transformers and line reactors is said to simplify and accelerate thanks to a software toolbox from the Vector Fields Software product line of Cobham Technical Services. A 3D Transformer Environment (TE3D) provides a graphical user interface for quickly designing transformers and reactors using Cobham’s Opera-3D finite element, electromagnetic simulation package .
Why soft magnetic material is used in transformer? - Quora ~ Transformer core requires magnetization, demagnetization and reverse magnetization during operation. The energy expended in doing so in the form of hysteresis losses should be minimum. This corresponds to low coercive force on the magnetization cu.
Flux: Transformers ~ Modeling any type of industrial transformers: three-phase, single-phase, auto transformer, reactors.. Simulating classical tests: No-load Short-ciiircuit Inrush current Analyygzing Iron losses Stray losses Joule losses Magnetizing reactance Performing thermal and mechanical analysis Multippyhysics (3rd ppy )arty tools) References ABB, Alstom, Electricité De France (EDF), Federal Mogul .
AES E-Library » Soft Magnetic Materials for Audio ~ The history of soft magnetic materials is traced from 1000 B.C. to the present time. This includes a description of the work of Oersted and Faraday who invented the first transformer, and the gradual improvements in core material over the last 150 years. These cover soft iron, silicon iron, grain orientation, Hi-B steels, domain control by lasers, and spark ablation.
Soft Magnetic Materials for Audio Transformers: History ~ Soft Magnetic Materials for Audio Transformers: History, Production, and Applications* G. A. V. SOWTER Sowter Audio Transformers, Ipswich IP1 2EL, Suffolk, UK The history of soft magnetic materials is traced from 1000 B.C. to the present time. This includes a description of the work of Oersted and Faraday who invented the first transformer, and the gradual improvements in core material over .
Electrical Transformer Manufacturer / Power Transformers ~ Power Transformers is our clients’ go-to contractor when it comes to the design of cutting edge, turnkey electrical systems. We offer a complete electrical “Packaged Power Solution” – we partner with our clients from project inception to commissioning and offer the full range of services encompassing all components such as design, manufacture, installation, testing and commissioning as .
Transformers / SpringerLink ~ MIT (1962) Magnetic circuits and transformers, 14th edn. John Wiley and Sons, New York Google Scholar Mittle VN, Mittal A (1996) Design of electrical machines, 4th edn.
Modeling and Application of Electromagnetic and Thermal ~ Modeling and Application of Electromagnetic and Thermal Field in Electrical Engineering / Cheng, Zhiguang, Takahashi, Norio, Forghani, Behzad / ISBN: 9789811501722 / Kostenloser Versand fĂĽr alle BĂĽcher mit Versand und Verkauf duch .
Magnetic Core Selection for Transformers and Inductors: A ~ Magnetic Core Selection for Transformers and Inductors: A User's Guide to Practice and Specifications, Second Edition / McLyman, Colonel Wm. T. / ISBN: 9780367400965 / Kostenloser Versand fĂĽr alle BĂĽcher mit Versand und Verkauf duch .
Module 11 AC Theory - Learn About Electronics ~ Transformers have been an essential component in electrical and electronic circuits since the 1830s and although new technologies in some electronic circuits have reduced the need for transformers, they are still essential in many applications. How Transformers work. This module describes how transformers work, and how the design of both the transformer coils, and the core on which they are .
Mathematical simulation model of power transformer for ~ This article suggests an approach employing two novel circuit elements — electromagnetic gyrator /EMG/ and magnetic loss /K/ — which enable the process of mathematical model building to be done faster. Besides, the use of these elements is presented in building a mathematical model of a power transformer. The model is employed for simulating the performance of the transformer by means of .
Magnetic Core Selection for Transformers and Inductors: A ~ Magnetic Core Selection for Transformers and Inductors: A User's Guide to Practice and Specifications, Second Edition (Electrical and Computer Engineering Book 102) (English Edition) eBook: McLyman, Colonel Wm. T.: : Kindle-Shop
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