Soft Magnetic Composites in Novel Designs of Electrical Traction Machines PDF Download
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Author: Zhang, Bo
Publisher: KIT Scientific Publishing
ISBN: 373150619X
Category : Technology (General)
Languages : en
Pages : 292
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Book Description
Nowadays, the manufacturing of electrical machines based on electrical steel laminations has been well established worldwide. Compared with the electrical steel, the soft magnetic composites (SMC) shows magnetic isotropy and lower eddy current losses. Thus, it becomes an important impulse promoting the development of new topologies of electrical machine. The application of SMC in the electrical traction machine for hybrid electrical vehicle or electrical vehicle has been researched in the work.
Author: Zhang, Bo
Publisher: KIT Scientific Publishing
ISBN: 373150619X
Category : Technology (General)
Languages : en
Pages : 292
Get Book Here
Book Description
Nowadays, the manufacturing of electrical machines based on electrical steel laminations has been well established worldwide. Compared with the electrical steel, the soft magnetic composites (SMC) shows magnetic isotropy and lower eddy current losses. Thus, it becomes an important impulse promoting the development of new topologies of electrical machine. The application of SMC in the electrical traction machine for hybrid electrical vehicle or electrical vehicle has been researched in the work.
Author: Bo Zhang
Publisher:
ISBN: 9781013282843
Category : Technology & Engineering
Languages : en
Pages : 288
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Book Description
Nowadays, the manufacturing of electrical machines based on electrical steel laminations has been well established worldwide. Compared with the electrical steel, the soft magnetic composites (SMC) shows magnetic isotropy and lower eddy current losses. Thus, it becomes an important impulse promoting the development of new topologies of electrical machine. The application of SMC in the electrical traction machine for hybrid electrical vehicle or electrical vehicle has been researched in the work. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Author: Phillip George Dickinson
Publisher:
ISBN:
Category :
Languages : en
Pages : 144
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Book Description
Author: Benjamin Dyer
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: UK Magnetics Society
Publisher:
ISBN:
Category : Electric machinery
Languages : en
Pages :
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Book Description
Author: Xiaokai Zhang
Publisher: ProQuest
ISBN: 9780549925385
Category : Composite materials
Languages : en
Pages : 189
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Book Description
Magnetic materials are widely used in high frequency from radio wave and microwave range. In some cases, high loss may be desired in applications such as heating and EM wave absorption. In most applications such as power transformers, DC-DC converters, etc., low loss is required to achieve a non-dispersive (frequency-independent) permeability spectrum with high value. In this dissertation work, we focused on four kinds of magnetic composites, which aimed at different AC applications: (1) First type of material is soft/semi-hard ferrite, which can work as heating elements in few MHz AC field with self-temperature control. The self-temperature regulation in such material has been demonstrated and the heat generation based on magnetic properties has been evaluated quantitatively throughout this research work. (2) Novel materials with simultaneously high permeability, high induction and high operating frequency are also been studied. Laminated nano-flakes structures based on iron, cobalt, nickel or their alloys have been developed in this work. Based on such structure, a new high frequency magnetic material was achieved with much higher Snoek's limit than ferrite and much lower loss than conventional metallic magnetic materials. (3) In addition to magnetic permeability, dielectric permittivity is another fundamental physical parameter. By using a material with matched high permeability and permittivity values, one can not only miniaturize the device size, but also maintain the impedance matching with surrounding space. Such magneto-dielectric materials with flake inclusions have been proposed and were demonstrated to have matched permeability/permittivity values up to 1GHz. (4) Meanwhile, materials with negative permeability and permittivity allow energy propagation direction in the opposite of wave propagation direction, giving rise to unusual behaviors such as inversed refraction. In this work, we proposed a method to achieve such "left-handed materials" based on magnetic material and demonstrated possible negative index of refraction in magnetic composite thin film.
Author: Lars O. Hultman
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Author: Maged Ibrahim
Publisher:
ISBN:
Category :
Languages : en
Pages : 161
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Book Description
Permanent magnet synchronous machines (PMSMs) with rare-earth magnets are widely used in the traction drives of electrical and hybrid electrical vehicles, as they can provide high efficiency and torque density. Due to the possibility of future shortage of rare-earth materials, it is essential for electric vehicle industry to find alternative magnet technologies that can provide a substitute for rare-earth PMSMs. Permanent magnet machines with Alnico magnets can theoretically provide torque densities comparable to rare-earth PMSMs, due to their high remnant flux density. However, these magnets are rarely used in the conventional designs of PMSMs, as they can be demagnetized by the armature field. The thesis presents a novel design for permanent magnet machines with Alnico magnets. The proposed design can provide high air gap flux density at no-load, and the armature field at full load tends to enhance the magnet flux. Therefore, the machine can operate with high torque density even under severe loading conditions. The demagnetization characteristics of Alnico magnets are also utilized to achieve high efficiency at a wide speed range, as the magnet flux is reduced at high speeds by armature current pulses that dissipate negligible losses, thus avoiding the additional copper losses of the continuous flux weakening current in conventional rare-earth PMSMs. The simulation of the demagnetization and magnetization dynamics of the proposed machine design requires considering the hysteresis characteristics of the permanent magnets. Therefore, finite element analysis (FEA) simulations for the designed machine are performed using a linearized hysteresis model for Alnico magnets. The thesis also aims to improve the design and modeling of electrical machines by developing computationally efficient methods for incorporating the hysteresis characteristics of electrical steel into electrical machine models.
Author: Gang Lei
Publisher: Springer
ISBN: 3662492717
Category : Technology & Engineering
Languages : en
Pages : 251
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Book Description
This book presents various computationally efficient component- and system-level design optimization methods for advanced electrical machines and drive systems. Readers will discover novel design optimization concepts developed by the authors and other researchers in the last decade, including application-oriented, multi-disciplinary, multi-objective, multi-level, deterministic, and robust design optimization methods. A multi-disciplinary analysis includes various aspects of materials, electromagnetics, thermotics, mechanics, power electronics, applied mathematics, manufacturing technology, and quality control and management. This book will benefit both researchers and engineers in the field of motor and drive design and manufacturing, thus enabling the effective development of the high-quality production of innovative, high-performance drive systems for challenging applications, such as green energy systems and electric vehicles.
Author: Daniel R. Luedtke
Publisher:
ISBN:
Category :
Languages : en
Pages : 362
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Book Description
