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Showing 1 to 20 of 53 for “"magnetic components"”.
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Customisable Magnetic Components Using Nanocrystalline Flake Ribbon
… growing demand for customising high-performance magnetic components with reduced losses, compact dimensions, lighter weight, and cost-effectiveness. Traditional methods for core customisation are cumbersome, time-consuming, and costly when producing small series of magnetic cores. Recently …
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The manufacture and characterisation of microscale magnetic components.
Abstract unavailable please refer to PDF
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Modeling and Design of Planar Integrated Magnetic Components
Recently planar magnetic technologies have been widely used in power electronics, due to good cooling and ease of fabrication. High frequency operation of magnetic components is a key to achieve high power density and miniaturization. However, at high frequencies, skin and proximity effect losses …
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Design Methodology and Materials for Additive Manufacturing of Magnetic Components
Magnetic components such as inductors and transformers are generally the largest circuit elements in switch-mode power systems for controlling and processing electrical energy. To meet the demands of higher conversion efficiency and power density, there is a growing need to simplify the process of …
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Integrated magnetic components for high-power high-current dc-dc converters
… on the design and development of an integrated magnetic (IM) structure for use in high-power high-current power converters employed in renewable energy applications. These applications require low-cost, high efficiency and high-power density magnetic components and the use of IM structures can …
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Development of magnetic components for 1-10 MHZ DC/DC converters
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
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Computer-Aided Formulation of Magnetic Pastes for Magnetic Components in Power Electronics
Magnetic components are necessary for switch-mode power electronics converters, but they are often the bulkiest and heaviest in the system. Novel magnetic designs with intricate structures lead to the size reduction of power electronics converters but pose challenges to the fabrication process and …
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Enabling HF power conversion : magnetic components and a wide voltage range converter
… dominant frequency-dependent loss mechanisms: magnetic material core loss and switching loss. Appropriate metrics are derived to evaluate magnetic materials in core loss limited components. A survey of material core loss shows the potential for significant performance improvement in the HF …
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Design and Processing of Ferrite Paste Feedstock for Additive Manufacturing of Power Magnetic Components
Reducing the size of bulky magnetic components (inductors and transformers) in power converters can be achieved by increasing switching frequency and applying innovative designs of magnetic components. Ferrite is the most suitable bulk magnetic material for working at high frequencies but it is …
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Design of High-density Transformers for High-frequency High-power Converters
… power converter design is to have high-density magnetic components which are usually the most bulky parts in a converter. Increasing the switching frequency to shrink the passive component size is the biggest contribution towards increasing power density. However, two factors, losses and …
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The electrodynamics of high frequency magnetics in power electronics
The electromagnetic behavior of magnetic devices used in power electronics circuitry, is studied in order to predict their performance within a context of desirable circuit parameters. Past efforts have focused on simplifications widely used in electric machinery applications. Due to the greatly …
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A hybrid switched-capacitor/inductor converter for small conversion ratios
… can offer advantages such as reduced size of magnetic components, reduced MOSFET voltage stresses, improved closed loop control and can offer high efficiency compared to a standard boost converter of the same IC package size. These improvements are made possible by adding a flying capacitor …
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Analysis and feedback control of magnetic bearings with reference to flywheel energy storage.
In high speed applications magnetic bearings offer many potential advantages over mechanical bearings. The type of magnetic bearing most suitable for energy storage flywheels is selected and analysed for the purpose of designing feedback control loops. A nonlinear as well as a small signal linear …
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A Two-Stage Piezoelectric Resonator and Switched Capacitor DC-DC Converter
… stations to television screens. Presently, magnetics pose a challenge for miniaturization as they fundamentally decrease in achievable power density at small scales. Our solution to this problem is to remove magnetic components altogether and instead design power converters based on …
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Enabling miniaturized grid-interface power conversion
… - semiconductor devices, passive energy storage components, and a variety of circuit- and system-level concerns. The sections of this thesis are somewhat distinct and may find application in a great variety of circumstances. Nevertheless, they can be understood as contributions to a single …
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Planar Magnetic Integration and Parasitic Effects for a 3 KW Bi-directional DC/DC Converter
… been trying to reduce the size and weight of magnetic components and thus the overall system [ 19 ]. One attempt at this is to increase the switching frequency of the system. However, this attempt has its limitations due to increased device switching losses. Device limitations usually confine …
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A paleomagnetic study of early tertiary basalts in West Texas
… ac demagnetization. Because of large secondary magnetic components and chemical alteration it was not possible to obtain reliable remanent magnetic directions or pole positions for sixteen flows. Of the fifteen reliable flows, six are normally magnetized, seven are reversely magnetized, and two …
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Large-Signal Characterization of Piezoelectric Resonators for Power Conversion
Magnetics are key components of conventional power converters, but they are often the bottleneck to achieving high power density due to their size, weight, and poor performance at small sizes. Piezoelectric devices, when operated in their inductive regime, can serve a purpose similar to that of …
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High-Performance High-Power Inductor Design for High-Frequency Applications
… electronic circuits are greatly impacted by magnetic components. This is especially true at Radio Frequencies (RF) of many MHz and above. In the High Frequency (HF, 3-30 MHz) range, coreless (or "air-core") inductors with a typical quality factor (Q) of 200-300 are conventionally used and are …
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Formulation, development, and characterization of magnetic pastes and epoxies for thick film inductors
… and transformers constitute two important magnetic components In RF and power hybrids electronic circuitry. Thick film inductors have been subject of extensive research in recent years because they significantly reduce the weight and size, and increase the frequency of operation of …
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