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 27 for “"coupled-inductor"”.
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Implementation of a Fixed Timing Coupled Inductor Soft-Switching Inverter
… production for various reasons. The fixed timing coupled inductor soft-switching inverter is of interest because in simulation and previous implementation it exhibits load and source adaptability using simple RC timer circuitry and can be implemented with low cost active auxiliary devices. During …
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A low ripple bi-directional battery charger/discharger using coupled inductor
… battery charge/discharge converter using coupled-inductor. Bi-directional switch structures and proper control scheme make it possible for the power to flow through the same converter in both directions: charging and discharging the battery. Meanwhile, the coupled-inductor is designed in …
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Analysis and design of a low-ripple coupled-inductor boost topology
… analysis, and design of a new low-ripple coupled-inductor boost topology. This topology is proposed for applications in which the conventional boost requires an input filter and two-stage output filter. One "zero-ripple" coupled magnetic provides both energy storage and second-order …
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Investigation of Multiphase Coupled Inductor Topologies for Point-of-Load Applications
… life. In a multiphase buck converter, discrete inductors are widely used as energy storage elements. However, this solution has a limited transient response with a large size of magnetic components. To overcome these issues, coupled inductor is proposed to realize a small steady-state current …
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Investigation of Multiphase Coupled-Inductor Buck Converters in Point-of-Load Applications
… efficiency and the fast transient in the phase inductor design. In 2000, P. Wong proposed the multiphase coupledinductor buck converter to solve this issue. With the phase inductors coupled together, the coupled-inductor worked as a nonlinear inductor due to the phase-shifted switching network, …
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Permeance based modelling, design and optimization of supercapacitor assisted surge absorber (SCASA)
… absorber (SCASA) developed at UoW incorporates a coupled-inductor wound to a specially selected magnetic material—powdered-iron—that absorbs transients. Despite its high performance, the circuit generates a secondary effect of a negative voltage-peak due to inductive energy release by the core. …
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Performance Improvement of Power Conversion by Utilizing Coupled Inductors
… application issues of advanced topologies with coupled inductors. The proposed innovative solutions can achieve significant performance improvement compared to the state-of-the-art technology. New applications call for high-efficiency high step-up DC-DC converters. The basic topologies suffer …
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High Frequency, High Current 3D Integrated Point-of-Load Module
… modularized POL converters, in which the bulky inductor is integrated with the active components to increase the power density. This concept has been demonstrated at current levels less than 5A and power density around 600-1000W/in³. This might address the needs of small hand-held equipment such …
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Low-Profile Magnetic Integration for High-Frequency Point-of-Load Converter
… this solution, the passive components such as inductors and capacitors are bulky. They occupy a considerable footprint on the motherboard. The problem is exacerbated with the current trend of reducing the size of all forms of portable computing equipment from laptop to netbook, increasing …
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Synchronous-Conduction-Mode Tapped-Inductor Buck Converter for Low-Power, High-Density Application
… as an extension of the buck converter, tapped-inductor (TI) buck converter has larger duty cycle while maintaining the structural simplicity. Therefore, the main objective of this thesis is to explore the potential of TI buck converter as a wide conversion range, high power density and high …
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Driver Based Soft Switch for Pulse-Width-Modulated Power Converters
… of the soft switch is outlined. A new coupled inductor based soft switching cell is proposed. The proposed zero-voltage-transition (ZVT) cell serves as a good candidate for the development of soft switch. The "Equivalent Inductor" and state plane based analysis method are used to simply …
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A High efficiency high power led driver with fault tolerance and multiple led load driving using a coupled Cuk converter
… are investigated. As a result, a converter with coupled inductors, suitable as an LED driver which has high efficiency and can maintain high LED efficacy, incorporated with a high efficiency dimming method, is chosen. For the proposed LED driver, a comprehensive analysis on the effects of …
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Supecapacitor-assisted Temperature Modification Apparatus (SCATMA) and Fast Supercapacitor Charger
… five time constant charging time and a series coupled inductor to charge the capacitor bank by dividing it into two parts. One part is charged using an overvoltaged dc source with capacitor bank terminal voltage monitoring and the other part is charged by the coupled-inductor using the energy …
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Modeling, Implementation, and Simulation of Two-Winding Plate Inductor
… with printed-circuit 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 …
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Advanced Control Schemes for Voltage Regulators
… low efficiency. In order to resolve this, the coupled inductor is used. With the coupled inductor, the transient inductance can be reduced with the same steady state inductance. Therefore, the transient speed can be faster without lowering down the system efficiency. The proposed hysteretic …
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High Power High Frequency 3-level NPC Power Conversion System
… is designed with LCL topology. A detailed inductor current ripple analysis derives the maximum inductor current ripple and the ripple distribution in a line cycle. The inverter side inductor is designed with the optimum loss and size trade-off. The grid side inductor is designed based on …
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Analysis, design, and evaluation of the optimum topology Cuk converter in comparison with the conventional Buck-Boost converter
… of operation. Also, a detailed comparison of the coupled inductor version of the Cuk converter under both the balanced and unbalanced current ripple reduction modes of operation is made. From this comparison, it is shown that the unbalanced current ripple reduction is more advantageous. The …
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Advanced topologies of high step-up DC-DC converters for renewable energy applications
… voltage multiplier (VM) cells, and magnetically coupled inductor (CI) and built-in-transformer (BIT). The proposed converters offer outstanding features, including high voltage gain with low or medium duty cycle, a small number of components, low current and voltage stresses on the components, …
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Class-E Current Source Power Conversion
… limited maximum output power. In this work, a coupled-inductor based parallel resonant CC Class-E inverter is proposed with more than 2 times maximum power without increasing part counts.
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High-Frequency Modeling and Analyses for Buck and Multiphase Buck Converters
… components and the sideband components are then coupled through the comparator. To be able to predict the converter's high-frequency performance, it is necessary to have a model that reflects the sampling characteristic of the PWM comparator. As the basis of further research, the existing …
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