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.
Results
Showing 1 to 10 of 10 for “"winding losses"”.
-
Optimal Design of MHz LLC Converter for 48V Bus Converter Application
… transformer concept is applied and a merged winding structure is used for flux cancellation, which effectively reduces the AC winding losses. A new fully interleaved termination and via design is proposed. It achieves significant reduction in loss and leakage flux. In addition, to study the …
-
Core loss characterization and design optimization of high-frequency power ferrite devices in power electronics applications
… and analysis of mechanisms of high-frequency losses, and design methodology for optimization for high-frequency magnetics are presented. The high-frequency losses of ferrite materials are characterized employing a large-signal impedance measurement technique. The impedance analyzer controlled …
-
Advancement of a modular rotor permanent magnet flux switching machine for high torque performance
… the flux focusing is utilizable, both armature windings and PM excitation sources are on the stator, and the salient pole rotor is simple yet robust. Regrettably, salient rotor and stator of PMFSM with single tooth winding have inherited flux cancellation, flux leakage, high iron losses, high …
-
Investigation of Topology and Integration for Multi-Element Resonant Converters
… loss. Matrix transformer is introduced to reduce winding loss and total volume. Flux cancellation method is utilized to reduce core size and loss. Synchronous Rectifier (SR) devices and output capacitors are integrated into secondary windings to eliminate termination related winding losses, via …
-
PCB Integrated Matrix Transformer for a High-Power Single Phase CLLC Resonant Converter with the Novel Application of Circular Orthogonal Parallel Airgaps
… airgaps dictating magnetizing inductance (L_m ), winding arrangements and reluctance variations are parameterized to achieve L_n. The reluctance model is revisited by integrating leakage flux "core walls" into the reluctance model, significantly improving the accuracy of calculated L_n values. Two …
-
Customisable Magnetic Components Using Nanocrystalline Flake Ribbon
… 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 developed magnetic cores customised …
-
High-frequency Power Conversion for Medium Voltage Power Electronics Interfaces
… the electric field within the primary side winding encapsulation rather than in the air. As a result, there is minimal electric field present in the air, allowing for further reduction in the transformer volume as there is no longer a need for insulation margin. With the enhanced insulation …
-
Modeling, Implementation, and Simulation of Two-Winding Plate Inductor
… boards (PCB). The coupled inductors with winding layers sandwiched between two core plates are studied in this dissertation in order to model the self-inductance, winding loss, and core loss. The most challenging task for the plate-core inductor is to model the magnetic field with finite …
-
Methodologies for Design-Oriented Electromagnetic Modeling of Planar Passive Power Processors
… leads to increased power loss density in windings and core, with subsequent increase in device temperature, parasitics and electromagnetic radiation. An accurate set of reduced-order modeling methodologies is presented in this work in order to predict the high-frequency behavior of …
-
Zlepšení energetických parametrů asynchronních strojů malého výkonu
Tato diplomová práce se zabývá asynchronními motory všeobecně. Práce pojednává o typech a rozdělení jednotlivých motorů, rozdílech trojfázových strojů od strojů jednofázových a o jejich účinnosti. V jedné z kapitol je popsán konkrétní typ motoru se všemi parametry od výrobce. Tento motor je …