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 38 for “"non-isolated"”.
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The Uniform Box Product of Some Spaces With One Non-Isolated Point
<p>In her thesis, Jocelyn Bell studied the properties of the uncountable Fort space and showed that it was normal, countably paracompact, and collectionwise Hausdorff. This paper answers some of the questions posed in that thesis and shows the space to be collectionwise normal, but not paracompact. …
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Investigation of High-Input-Voltage Non-Isolated Voltage Regulator Modules Topology Candidates
… Pentium processor was driven by a non-standard, less-than-5V power supply, instead of drawing its power from the 5V plane on the system board. A so-called Voltage Regulator Module (VRM), is put close to the processor in order to provide the power as quickly as possible. Nowadays, …
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Design and Construction of 1800W Modular Multiple Input Single Output Non-isolated DC-DC Converters
… report details the design and construction of non-isolated DC-DC converters to create a Multiple Input Single Output (MISO) converter for combining multiple renewable energy sources into one single output. This MISO uses the four-switch buck-boost topology to output a single 48V from multiple …
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A Non-isolated Half Bridge Buck-based Converter For Vrm Application And Small Signal Modeling Of A Non-conventional Two Phase Bu
This dissertation is about treatment of the nonbiodegradable organic content of landfill leachate by chemical oxidation combined with biological treatment. It is divided into three parts. In the first part, ferrate was compared to Fenton's reagent for the purpose of removing non-biodegradable …
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Transformer-Less Common Gro Nine-Level Grid-Connected Boost Inverter for PV Panels
… thesis aims to present an improved structure for non-isolated inverters connectedto the grid for solar panel applications. The work done in this manuscript will be reviewed in five chapters as follows: In the first chapter, a comprehensive overview of the various structures connected to the grid …
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The Role of CREB in Social Isolation and Natural Reward Behavior
… aspects of social isolation can be mimicked in non-isolated animals by inhibition of CREB in the nucleus accumbens and certain deficits in isolated animals can be reversed by wildtype overexpression of CREB. However, other behavioral deficits observed in the isolated phenotype, while reversed by …
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High Frequency, High Current Integrated Magnetics Design and Analysis
… The topology studied in this work is the 12V non-isolated ZVS self-driven presented in [1]. This scheme offered an increased efficiency over the state of the art industry design and also increased the switching frequency for capacitor reduction. The goal of this research was to study this …
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Adaptive Automotive Lighting Systems
… This thesis shows implementation of various non-isolated analog converters integrated with digital dimmers to achieve these adaptive lighting systems. Adaptive lighting systems involve reading an input from an external source (brake pedal or steering wheel) and changing the brightness and/or …
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DC-DC converter designs for medium and high voltage direct current systems
… storage, conduction losses, or footprint. A non-isolated dc-dc converter topology which offers more compact and efficient station design with respect to isolated DAB - yet without galvanic isolation - is studied for quasi two-level (trapezoidal) operation and compared to the isolated …
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Chemical And Biological Treatment Of Mature Landfill Leachate
… problems need to be addressed. Transformer-based non-isolated topologies are not new approaches to extend the duty cycle and avoid the associated drawbacks. High leakage, several added components and complicated driving and control schemes are some of the trade-offs to expand the duty cycle. The …
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Sensorless Control of a Bidirectional Boost Converter for a Fuel Cell Energy Management System
… and elimination of current sensors. A dual 2.5kW non-isolated bidirectional boost converter is designed and analyzed. The various bidirectional boost topologies are compared on cost and ability to meet the specifications. A sensorless average current mode is designed, implemented and verified …
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Multi Resonant Switched-Capacitor Converter
… as MRSCC for both high density and efficiency non-isolated large step-down Intermediate Bus Converter (IBC). Conventional Resonant Switched-Capacitor Converter (RSCC) proposed by Shoyama and its high voltage conversion ratio derivation such as Switched-Tank Converter (STC) by Jiang and li …
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High Frequency, High Current Density Voltage Regulators
… buck converter and the hard-switching isolated topologies incapable of operating at higher frequency. The research goal is to develop novel means that can help a high-output- current VRM run efficiently at high frequency. A novel Complementary Controlled Bridge (CCB) self-driven concept …
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Passive Cancellation of Common-Mode Electromagnetic Interference in Switching Power Converters
… presented, which is then applied to families of isolated DC/DC converters, non-isolated DC/DC converters, and DC/AC inverters and motor drives. The method, results, and ramifications of this technique are presented in order of appearance.
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Robotic Pruning for Indoor Indeterminate Plants
… isolation. Furthermore, the segmentation of isolated images significantly outperformed non-isolated ones, with improvements exceeding 30%, 27%, and 30% in precision, recall, and F1 metrics, respectively. This validation also confirmed the method's effectiveness in accurately identifying …
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High-Voltage-Gain DC-DC Power Electronic Converters -- New Topologies and Classification
… second high-voltage-gain converter is based on a non-inverting diode-capacitor voltage multiplier cell. Both the proposed converters offer continuous input current and low voltage stress on switches which make them appealing for applications like integration of renewable energy sources. The …
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Robust Control of a Multi-phase Interleaved Boost Converter for Photovoltaic Application using µ-Synthesis Approach
… a new strategy of robust control applied to a non-isolated DC/DC interleaved boost converter with a high step voltage ratio as multi-phase, multi-stage which is favorable for PV applications. The proposed controller is designed based on µ-synthesis technique to approach a high regulated output …
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Two new families of high-gain DC-DC power electronic converters for DC-microgrids
… and safety standpoints. Next, a new family of non-isolated high-voltage-gain dc-dc power electronic converters with unidirectional power flow is introduced. This family of converters benefits from a low voltage stress across its switches. The proposed topologies are versatile as they can be …
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Energy Harvesting from Elliptical Machines: DC-DC Converter Design Using SEPIC Topology
… proposed DC-DC converter design is based on a non-isolated, PWM-switching single-ended primary inductor converter (SEPIC) topology, as opposed to the resonant zero-current switching/zero-voltage switching (ZCS/ZVS) topology-based off-the-shelf DC-DC converter that the previous project utilized, …
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MOSFET Current Source Gate Drivers and Topologies for High Efficiency and High Frequency Voltage Regulator Modules
… is new self-driven zero-voltage-switching (ZVS) non-isolated full-bridge converters for 12V input VRM applications. The proposed converter achieves the duty cycle extension, ZVS operation and SRs gate energy recovery. At 12V input, 1.3V output and 1MHz, the proposed converter improves the …
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