Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Magnetic Component"”.
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Integrated EMI/Thermal Design for Switching Power Supplies
… The parasitic elements of circuit layout and components are extracted analytically or by using CAD tools. Based on the model, circuit layout and magnetic component design are modified to minimize circuit EMI. EMI filter can be designed at an early stage without prototype implementation. In the …
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Coupled-magnetic filters with adaptive inductance cancellation
… parasitic inductance and the size and cost of magnetic elements. Coupled-magnetic filters have been developed that provide increased filter order with a single magnetic component, but also suffer from parasitic inductance in the filter shunt path due to imperfectly-controlled coupling of the …
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Design and evaluation of a reconfigurable stacked active Bridge dc/dc converter for efficient wide load-range operation
… converter is implemented with a single compact magnetic component, providing power combining, isolation, and energy transfer inductance. The theory of the converter and its various operating modes, referred to in this thesis as the Double-Stacked Active Bridge converter, is also explored, and a …
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Power Electronics Meet Piezoelectrics: Converters, Components, and Miniaturization
… remain the bulkiest, lossiest, and costliest components in the systems they serve. Miniaturization of power electronics is fundamentally bottlenecked by passive components, particularly magnetics (i.e., inductors and transformers), which pose inherent size and performance challenges at small …
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Konzept einer berührungslosen Lagerung für Rotations-Blutpumpen
… of the principle solutions a hydrodynamic and/or magnetic bearing is proposed. The solution of a hybrid bearing implementing both principles is selected. However, the magnetic component is purely derived from the existing magnetic face coupling. Different embodiment variations of the hydrodynamic …
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Metamaterial Super Absorber for Light-Matter Interaction: from Broadband to Extreme Field Confinement
… exhibit strong coupling with the electric and/or magnetic component of an incident electromagnetic wave by tailoring the shape, size, lattice constant, interatomic interaction of the “atoms”. Light absorption, which is one of the most fundamental light-matter interaction, is an essential …
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Novel Implant Designs In Magnetic Drug Targeting
… approaches have been proposed, one of which is magnetic drug targeting (MDT). The concept of MDT is to use drug carriers that contain a magnetic component and guide these carriers to a specific site with the aid of an external magnetic source. These magnetic drug carrier particles (MDCP) can be …
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Miniaturizing High Step-Down, High Output Current Power Converters
… To address this challenge, a new paradigm for magnetic component design is proposed in which magnetic and electronic elements are viewed as a single ``coupled electronic and magnetic system'' (CEMS). The first proposed CEMS is the Variable Inverter/Rectifier Transformer (VIRT), which enables a …
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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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Investigation of the high-frequency effects in Mn-Zn ferrites for EMI filter applications
… high-frequency effects encountered within the magnetic core when used in high-frequency, high-power electromagnetic interference (EMI) filters. These applications require cost-optimized, high-performance, and high-power-density magnetic components. As the manufacturers’ material specifications …
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Design of low-voltage, high-bandwidth radio frequency power converters
… values and physical size of the passive components that dominate power converters, and enables increased bandwidth and transient performance which is valuable in a multitude of low-voltage and low-power applications. This thesis explores the scaling of magnetic component size with …
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Investigation on Interleaved Boost Converters and Applications
… current. Based on the investigation on the total magnetic component weight, inverse coupling inductor can reduce the total magnetic component weight. The reduction is more pronounced for lower switching frequency design when the inductor size is dominating among the total magnetic components. …
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Synthesis and Characterization of Nanostructures in Porous Anodic Aluminum Oxide Templates
… were also fabricated on alumina templates. The magnetic properties of the various metal nanostructures were investigated. The pore size, interpore distance, and pore geometry highly affect magnetic properties of nanostructures grown in the templates. Hexagonally ordered porous alumina templates …
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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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Uniform Field Distribution Using Distributed Magnetic Structure
Energy distribution in a conventional magnetic component is generally not at a designer's disposal. In a conventional toroidal inductor, the energy density is inversely proportional to the square of the radius. Thus, a designer would be unable to prescribe uniform field distribution to fully …
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Modeling, Implementation, and Simulation of Two-Winding Plate Inductor
Design of magnetic component is a key factor in achieving high frequency, high power-density converters. Planar magnetics are widely used in bias power supplies for the benefits of low profile and their compatibility with printed-circuit boards (PCB). The coupled inductors with winding layers …
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Constant-Flux Inductor with Enclosed-Winding Geometry for Improved Energy Density
The passive components such as inductors and capacitors are bulky parts on circuit boards. Researchers in academia, government, and industry have been searching for ways to improve the magnetic energy density and reduce the package size of magnetic parts. The "constant-flux" concept discussed …
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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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Investigation of Alternative Power Architectures for CPU Voltage Regulators
… achieved. At the same time, since there are no magnetic components for the switched-capacitor voltage divider, high power density can be achieved. By very careful design, a power density of more than 2000W/in3 with more than 97% efficiency can be achieved for the proposed voltage divider. The …
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