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 20 of 58 for “"fast transient"”.
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Low-voltage High-efficiency Fast-transient Voltage regulator Module
In order to meet demands for faster and more efficient data processing, modern microprocessors are being designed with lower voltage implementations. The processor voltage supply in future generation processors will decrease to 1.1 V ~ 1.8V. More devices will be packed on a single processor chip, …
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Statistical Stability and Fast Transient Growth in Wall-Bounded Turbulence
… models such as modal stability analysis and transient growth calculation. With a purpose to better the understanding of the relationship between the mean flow and the background turbulence structures, this thesis revisits the linear stability of the mean flow in statistical framework and …
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Design of Active Clamp for Fast Transient Voltage Regulator-Down (VRD) Applications
… great expansion. Processors are becoming faster and more powerful. Power management issues in computing systems are becoming more and more complex and challenging. An evolution began when the high-performance Pentium processor was driven by a non-standard, less-than-5V power supply, …
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Fast transient simulation of fernandez surge arrester model on a transmission line using ATP
… be use to analyze its effect to system. When fast front transients, such as from lightning, are to be investigated, the MOV surge arrester behavior representation is significantly different. So, fast front surge arrester is designed because it has dynamic characteristics that are significant …
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Modeling and Design of a Monolithic High Frequency Synchronous Buck with Fast Transient Response
… performance, high functionality, small profile, fast transient and low cost are the most wanted features for modern power management ICs, especially for mobile power. In order to reduce profile, the number of external components should be as small as possible, which means that compensator, ramp …
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Fast transient simulation of pinceti surge arrester model on a transmission line using ATP Software
… model is proposed to simulate using Alternative Transient Program (ATP) software. Several procedures have been following to calculate Pinceti arrester model parameters so that compatible with 132kV overhead transmission line system. Tested result by simulation is compared with the manufacturer …
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Fast transient simulation of IEEE recommended surge arrester model on a transmission line using alternative transient program (ATP)
… model. This simulation uses software Alternative Transient Program - Electromagnetic transients Programmed (ATP-EMTP). This software is very appropriate in examining the behavior of the system, especially a high voltage system lines. As a result of the comparison can be made in the system of 132kV …
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System and IC level analysis of electrostatic discharge (ESD) and electrical fast transient (EFT) immunity and associated coupling mechanisms
… electrostatic discharge (ESD), electrical fast transients (EFT) or sine wave signals can reveal RF immunity problems. Typical problems include temporary malfunctions or permanent damage of integrated circuits (ICs). In an effort to reproduce those disturbances, a series of electromagnetic …
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Analysis and control of monolithic piezoelectric nano-actuator
… of the piezoelectric ceramic's high resolution, fast transient response, and potential low cost. However, hysteresis nonlinearity and lightly damped vibration exist in the system, which limit the actuator applications. This work focuses on the hysteresis characteristics in time and frequency …
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Design and evaluation of a very high frequency dc/dc converter
… efficiency over a wide load range, and excellent transient performance. A 110 MHz, 23 W experimental converter has been built and evaluated. The input voltage range is 8-16 V (14.4 V nominal), and the selectable output voltage is between 22-34 V (33 V nominal). The converter achieves higher than …
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Microprocessor-based soft variable structure control for D.C. motor speed regulation
… produces robustness to parameter variation and fast transient response, is discussed in this thesis. The digital implementation techniques are presented in the aspects of sample rate, prefilter design, hardware selection, and microprocessor arithmetic operation. Simulation and experimental …
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Application Considerations of Multiphase Monolithic Buck Regulators with Coupled Inductors
… to and beyond 100A power rail and microseconds transient recovery requirements for applications in wireless, healthcare, defense, industrial, and automotive industries. This thesis investigates multiphase design and application for monolithic buck switching regulators to multiply output current …
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A gate-level simulator for alpha-particle-induced transient faults
… available for accurate alpha-particle-induced transient fault simulation. However, they are not fast enough to simulate a large number of transient faults on a relatively large circuit in a reasonable amount of time. This thesis describes a fast transient fault simulator which can evaluate the …
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Design of a high-efficiency, high-performance zero-voltage-switched battery charger-discharger for the NASA EOS space platform
… characteristics including low bus impedance and fast transient response.
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Multilevel Buck Converter Topologies and Their Applications
… with series capacitor Buck converter to enable fast transient response is proposed. Experimental prototypes have been built and tested to validate the proposed methods.
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AN ADAPTIVE AND SELF-COGNITIVE ACE FILTER
… a high noise, reduction ratio together with a fast transient response. In this thesis, the application of Kalman filtering of ACE signals is discussed and an adaptive ACE filter is described which achieves both a high noise reduction ratio and fast response with excellent flexibility for …
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A fast multi-purpose circuit simulator using the latency insertion method
… there is a constant need for and push toward faster and more accurate circuit simulation techniques. The latency insertion method (LIM) has recently emerged as an efficient approach for performing fast simulations of very large circuits. By exploiting latencies in the circuit, LIM is able to …
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Optimization of Power MOSFET for High-Frequency Synchronous Buck Converter
… (SBC) in order to achieve low cost, low profile, fast transient response and high power density. However, high frequency also causes more power loss on MOSFETs. Optimization of the MOSFETs plays an important role in the system performance. Circuit and device modeling is important in understanding …
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Control and Modeling of High-Frequency Voltage Regulator Modules for Microprocessor Application
… (VRM) challenges of high bandwidth control with fast transient response, high current output, simple implementation, and efficient 48V solution are tackled in this dissertation. With the push for control bandwidth to meet design specifications for microprocessor VRM with larger and faster load …
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Photovoltaic Source Simulators for Solar Power Conditioning Systems: Design Optimization, Modeling, and Control
… simulator: (i) high power-stage efficiency, (ii) fast transient response-time, (iii) output impedance matching with actual PV generator, and (iv) precise reference generation technique. Throughout this research, two different PV source simulator systems are designed, modeled, and experimentally …
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