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Dissertations / Theses on the topic 'Electronic stability system'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Oukati, Sadegh Mahmoud. "Control of power electronic devices (FACTS) to enhance power system stability." Thesis, University of Strathclyde, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275177.

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2

Ferdoush, Md Asif. "System Stability of the Overhead Power Supply System used in the Electric Road System." Thesis, Scania CV AB, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-399815.

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This thesis presents the stability analysis of an Electric Road System (ERS), which is often abbreviated as eHighway, used for the electrification of the hybrid vehicle. The overall system modelling of the ERS, starting from the sub-station to the critical part of the Scania hybrid truck is performed in the MATLAB Simulink environment. The ERS consists of an overhead catenary line (OCL), where vehicles are electrified by using a pantograph mounted over the vehicle. The stability analysis of the power supply of the overhead line is done by taking into account several aspects of the system. The

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3

Blaauw, Deon. "Flight control system for a variable stability blended-wing-body unmanned aerial vehicle." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2297.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.<br>This thesis presents the analysis, design, simulation and practical implementation of a novel control system for a variable stability blended-wing-body unmanned aerial vehicle. The aircraft has a moveable centre of mass that allows it to operate in an aerodynamically optimised minimum drag configuration during cruise flight. The primary purpose of the control system is thus to regain nominal static stability for all centre of mass positions, and then to further regulate motion variables for auton

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4

Thapar, Alok. "Investigation of power quality catagorisation and simulating its impact on sensitive electronic equipment /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18160.pdf.

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5

Ung, Niklas. "The effects of backlash on the frequency stability in a hydro based power system." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235268.

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The generated and consumed power should always be in balance in a power system. Any energy from a power imbalance will be stored as kinetic energy in the system's rotating mass leading to a changed frequency. To keep the frequency within acceptable limits hydropower plants are used to counteract power imbalances. The hydropower plants are however introducing a nonlinearity, namely backlash. This complicates the behavior of the system, e.g. a limit cycle behavior can arise. A limit cycle is a standing oscillation and will force the system to move away from what is desired. Oscillations will ca

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6

Hao, Shiying. "An implantable electronic system for in vivo stability evaluation of prostheses in total hip and knee arthroplasty." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525143.

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Total hip arthroplasty (THA) and total knee arthroplasty (TKA) are relatively new biomedical techniques developed during the last century, which are frequently recommended for patients with joint diseases. In spite of their success and huge popularity, the postoperative failure rates for these procedures remain significant. Migration and micromotion of the implant are the primary indicators of its postoperative stability and many in vitro measurement techniques have been discussed. However, effective, practical methods to measure these metrics in vivo have proven elusive and the evolution of s

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7

Kinjawadekar, Tejas. "Model-based Design of an Electronic Stability Control System for Passenger Cars Using CarSim and Matlab-Simulink." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259174786.

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8

Chandrasekharan, Santhosh. "Development of a tractor-semitrailer roll stability control model." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1196260360.

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9

Ekstrand, Christian, and Farsad Mansori. "Stability Related Issues for High Wind Power Penetration : Exploring possibilities to enhance grid stability from synthetic inertia in a future scenario." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96442.

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The future global energy transition favour renewables such as wind power, which is predicted to be one of the predominant sources harvesting abundant amounts of energy onwards. Consequently, causing several conventional synchronous generators to be decommissioned in a near future to achieve an overall reduction in greenhouse gases related to electricity generation. However, this evolution comes with new challenges regarding power system stability that could jeopardize the reliability of the grid as we today know it. Therefore, this thesis will examine how high penetrations of wind power are im

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10

Galbraith, A. S. G. "Estimation of Synchronous Generator Parameters using Time-domain Responses." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1663.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005.<br>Power system stability simulations are of growing importance for studying the operational integrity of modern power systems, especially in developing economies where generating and transmission capacity lead the demand by relatively small margins. The relevant model topologies, i.e. for synchronous generators, automatic voltage regulators (AVR) and governor control systems, and the simulation software tools are well established. The MATLAB® Power System Blockset provides engineers with a versatil

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11

Schejbal, Jan. "Vliv vybraných elektronických systémů podvozku na jízdní dynamiku vozidla." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-232497.

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This work deals with the impact of selected electronic chassis systems of modern vehicles, their driving dynamics. The general aim of this work is to create the basic methodology for assessing casualties of the influence of these systems. The thesis is describing functions and effects antilock and stability systems on vehicle dynamics. Below are possible methods and systems for determining the influence on accident plot. As part of the study was performed measuring the impact of anti-lock system on the vehicle. The result of this work is the basic methodology to the analysis of road accidents

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12

Hong, Chao, and 洪潮. "Parallel processing in power systems computation on a distributed memory message passing multicomputer." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B3124032X.

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13

Hong, Chao. "Parallel processing in power systems computation on a distributed memory message passing multicomputer /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22050383.

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14

Obradovic, Danilo. "Coordinated Frequency Control Between Interconnected AC/DC Systems." Licentiate thesis, KTH, Elkraftteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280156.

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With ambitions of reducing the environmental pollution, power systems integrate larger shares of Renewable Energy Sources (RES) to phase out conventional thermal and nuclear generators. Since RES (such as wind and solar power) are connected to the grid through power electronics devices, they do not inherently contribute to system inertia. With decreasing inertia, the Instantaneous Frequency Deviation (IFD), which follows a power unbalance, is significantly impacted. Frequency Containment Reserves (FCR) are designed to provide a fast dynamic response, counteract power imbalances and stabilize t

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15

Riexinger, Luke E. "Residual Crashes and Injured Occupants with Lane Departure Prevention Systems." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/103060.

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Every year, approximately 34,000 individuals are fatally injured in crashes on US roads [1]. These fatalities occur across many types of crash scenarios, each with its own causation factors. One way to prioritize research on a preventive technology is to compare the number of occupant fatalities relative to the total number of occupants involved in a crash scenario. Four crash modes are overrepresented among fatalities: single vehicle road departure crashes, control loss crashes, cross-centerline head-on crashes, and pedestrian/cyclist crashes [2]. Interestingly, three of these crash scenarios

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16

Farooq, Omer, and Bodiuzzaman Molla. "Observer Implementation in an FPGA Using Simulink and Xilinx System Generator." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4157.

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In order to reduce the cost of the current switched resonant power converters, a state observer is introduced to provide the controller with the required information for the effective switching of the converter without the need of expensive sensory inputs from the resonant circuit. This Master's thesis investigates the usage of Matlab/Simulink and Xilinx System Generator as an implementation tool for Field Programmable Gate Array (FPGA) development of the Observer Model. The main aim is to keep the model size to a minimum while keeping the error within a reasonable range, allowing the obs

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17

Sumsurooah, Sharmila. "Robust stability analysis of power electronic systems." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/37829/.

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Power electronics is the enabling technology that can put transportation on a more sustainable pathway. The key problem with power electronic (PE) systems is that they are prone to instability. Classical techniques are insufficient at assessing the stability of these systems, as they do not take into account the uncertain nature of physical systems. This thesis presents the structured singular value (SSV) method as an effective, reliable and robust stability analysis approach that justifiably incorporates uncertainties which are inherently present in physical systems. Although the SSV approach

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18

Huynh, Phuong. "Stability analysis of large-scale power electronics systems." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/40205.

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A new methodology is proposed to investigate the large-signal stability of interconnected power electronics systems. The approach consists of decoupling the system into a source subsystem and a load subsystem, and stability of the entire system can be analyzed based on investigating the feedback loop formed by the interconnected source/load system. The proposed methodology requires two stages: (1) since the source and the load are unknown nonlinear subsystems, system identification, which consists of isolating each subsystem into a series combination of a linear part and a nonlinear part, must

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19

Wang, Fang 1973. "A programmable display system for perceptual stability research /." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31076.

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A programmable display system for perceptual stability research is presented. The display system involves 96 programmable, independent, two-colored LED outputs, and can display a video with the time resolution of one millisecond. Because of the high time resolution, this system provides a means to study humans' perceptual stability with high precision. The system may display up to 24,576 frames repeatedly after each download. Hardware for video download, saving, and display, and software for video design were developed and implemented. The hardware consists of a control module, a storage and i

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20

Salama, Maria Mourad Ebeid Meleka. "Architectural stability of self-adaptive software systems." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8667/.

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This thesis studies the notion of stability in software engineering with the aim of understanding its dimensions, facets and aspects, as well as characterising it. The thesis further investigates the aspect of behavioural stability at the architectural level, as a property concerned with the architecture's capability in maintaining the achievement of expected quality of service and accommodating runtime changes, in order to delay the architecture drifting and phasing-out as a consequence of the continuous unsuccessful provision of quality requirements. The research aims to provide a systematic

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21

Donoughe, Kelly Marie. "Evaluating the Effectiveness of Electronic Stability Systems in Reducing Truck Rollovers." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36246.

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The objective of this research is to develop a customized hardware-in-the-loop system that is used to test Electronic Stability Program (ESP) systems to prevent heavy truck rollovers when navigating horizontal roadway curves. While most of the published literature on electronic stability control focuses on the effectiveness of stability systems in passenger cars, very few researchers have considered its application as it pertains to commercial vehicles. Detailed crash data that have been extracted from the crashes that are represented in the Large Truck Crash Causation Study database have be

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22

Wong, Chi Kong. "Modelling of ASVG system, simulation and stability study." Thesis, University of Macau, 1997. http://umaclib3.umac.mo/record=b1445378.

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23

Cadotte, Patrick. "Robust bounded-input bounded-output stability of systems." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100331.

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Two research problems involving the class of discrete-time signals bounded in magnitude are addressed in this thesis. The first problem concerns robust stability of systems with repeated, structured, linear time-varying, and induced-ℓinfinity-norm bounded perturbations. The second problem consists in the design of an ℓ₁-optimal controller that allows for flexible management of the tradeoff between the ability of a system to attenuate disturbance signals versus its expected worst peak-to-peak amplification. Original solutions to both problems are provided and their efficiency is assessed with e

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24

Bilík, Martin. "Možnosti zjišťování vlivu elektronických stabilizačních systémů podvozku na jízdní dynamiku vozidla." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-232544.

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This diploma thesis deals with the possibilities of determining the influence of electronic stability systems on the chassis of the vehicle driving dynamics. In the introductory section is made theoretical analysis of road vehicle dynamics. Further description is made of some stabilization systems and situations and how to solve them by using these systems. Chapter 6.2.1 describes the methodology of practical experiment, which can determine influence of the stability system of the vehicle chassis on driving dynamics. The next chapter describes an experiment conducted and interpreted the measur

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25

Pan, Fei. "Multifrequency Averaging in Power Electronic Systems." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/62.

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Power electronic systems have been widely used in the electrical power processing for applications with power levels ranging from less than one watt in battery-operated portable devices to more than megawatts in the converters, inverters and rectifiers of the utility power systems. These systems typically involve the passive elements such as inductors, capacitors, and resistors, the switching electronic components such as IGBTs, MOSFETS, and diodes, and other electronic circuits. Multifrequency averaging is one of the widely used modeling and simulation techniques today for the analysis and de

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26

Ahmed, Sara Mohamed. "Computer Modeling and Simulation of Power Electronics Systems for Stability Analysis." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31026.

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This works focuses on analyzing ac/dc hybrid power systems with large number of power converters that can be used for a variety of applications. A computer model of a sample power system is developed. The system consists of various detailed/switching models that are connected together to study the sample system dynamic behavior and to set conditions for safe operation. The stability analysis of this type of power systems has been approached using time domain simulations. There are three types of stability analysis that are studied: steady-state, small-signal analysis and large signal analysis.

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27

El, Chehaly Mohamed. "Power system stability analysis with a high penetration of distributed generation." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=92399.

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The operation and structure of distribution system is changing with the integration of distributed generation, based on alternative energy sources, including renewable energy sources (wind, solar). Among the new issues, there is the question of stability of distribution systems in the presence of a large penetration of distributed generation (DG).<br>With power systems operating near their loadability limits, voltage stability becomes an important issue. Many utilities have implemented long-term solutions to counter this problem, such as adding transmission lines and new power plants in order

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28

Cvetkovic, Milos. "Power-Electronics-Enabled Transient Stabilization of Power Systems." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/344.

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Transient stability of electric energy grids is defined as the ability of the power system to remain in synchronism during large disturbances. If the grid is not equipped with controllers capable of transiently stabilizing system dynamics, large disturbances could cause protection to trigger disconnecting the equipment and leading further to cascading system-wide blackouts. Today’s practice of tuning controllers generally does not guarantee a transiently stable response because it does not use a model for representing system-wide dynamic interactions. To overcome this problem, in this thesis w

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29

Ozmun, Phillip M. "Nonlinear control and design methodologies for electrostatic MEMS devices." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/OZMUN__16.pdf.

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30

Adediran, Adeoti Taiwo. "A study of power electronic building block (PEBB)-based integrated shipboard power systems during reconfiguration." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/413.

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The U.S. Navy has developed in their ships, and is continually improving, electric propulsion, ship service power, and electric loads. The latest topology under design is the integrated power system (IPS). The IPS entails the all electric ship concept with electric propulsion, direct current (DC) distribution, and modular technology. In the all electric ship concept, ship propulsion and ship service loads are powered by alternating current (AC) generation. For the IPS, power electronics conversion is to be utilized to convert alternating current (AC) generation to direct current (DC) distribut

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31

López, Rodríguez-Roselló Jorge. "Stability of Networked Control Systems with Applications in Smart Buildings." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214700.

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Wireless sensor networks (WSNs) appeared in themiddle of the last century for military purposes although nowadaysthey are used in multiple areas. This paper focuses on smartbuildings, where WSNs play a key role. The aim of this studyis to obtain and examine the stability conditions of networkedcontrol systems (NCSs). More specifically, the thermal control ofa room is analyzed using classical control- and hybrid- theory.Communication between system and controller is established witha not-reliable network, inducing uncertainties. The cases herebystudied are: i) constant and time-varying delays,

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32

Makvand, M. Biglary. "Power systems voltage stability using dynamic models for both generators and loads." Thesis, University of Bath, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301545.

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33

Zheng, Xie. "Stability Crossing Set for Systems with Three Scalar Delay Channels." Thesis, Southern Illinois University at Edwardsville, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1552303.

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<p> The characteristic function of a system with three scalar delay channels typically involve the cross terms of different delays. This article studies the geometric structure of the stability crossing set, which is defined as the set of delays with at least one characteristic root on the imaginary axis. The understanding of this geometric structure leads to a good understanding of the stable regions of the delay parameter space. The presence of the coupling terms significantly complicates the analysis, and a thorough analysis requires a substantial amount of numerical computation. Examples a

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34

Cakici, Ferit. "Modeling, Stability Analysis And Control System Design Of A Small-sized Tiltrotor Uav." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610435/index.pdf.

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Unmanned Aerial Vehicles (UAVs) are remotely piloted or self-piloted aircrafts that can carry cameras, sensors, communications equipment or other payloads. Tiltrotor UAVs provide a unique platform that fulfills the needs for ever-changing mission requirements by combining the desired features<br>hovering like a helicopter and reaching high forward speeds like an airplane. In this work, the conceptual design and aerodynamical model of a realizable small-sized Tiltrotor UAV is constructed, the linearized state-space models are obtained around the trim points for airplane, helicopter and conversi

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35

Nøland, Jonas Kristiansen. "Fast-response rotating brushless exciters for improved stability of synchronous generators." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-292835.

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The Norwegian Network Code FIKS from the Norwegian Transmission System Operator (TSO) Statnett, states that synchronous generators ≥ 25 MVA must have a static excitation system. It also includes requirements on the step time response and the available field winding ceiling voltage of the excitation system. An improved brushless excitation system is in operation in some pilot power plants. A rotating thyristor bridge is controlled via Bluetooth. The step time response is as fast as conventional static excitation systems. However, a ceiling voltage factor of 2 requires the thyristor bridge to op

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36

Fourie, Gert. "Power system stabilizer and controlled series capacitor small-signal stability performance analysis." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/53013.

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Thesis (MScEng)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: This thesis presents results of a study on the small-signal stability of a single-machine infinite-bus power system. Conditions of generator loading and network impedance are identified that require additional stability support. Two methods of stability enhancement are investigated, namely the power system stabilizer and the controlled series capacitor. Both stabilizers employ the conventional (classic) control structure, and parameters are evaluated for optimum performance using an integral-of-the-squared-error-base

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37

Guan, Rui. "Stability control and protection of power systems with VSC HVDC and VSC FACTS." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8639/.

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The recent progress of high-voltage high-power fully controlled semiconductor technology laid the foundation of VSC technology, which continues to advance the developments of HVDC technology and FACTS., However, the high penetration of VSC based systems may introduce certain risks to existing power systems in two primary aspects: dynamic stability and protection. This thesis investigates the impacts of VSC HVDC and VSC FACTS on system dynamic stability and protection. An integrated small-signal stability model for the study of interactions between CFC and VSC is established. Modal analysis res

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38

Keskin, Mehmet B. "Continuation Power Flow And Voltage Stability In Power Systems." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608718/index.pdf.

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This thesis investigates an important power system phenomenon, voltage stability, by using continuation power flow method. Voltage collapse scenario is presented which can be a serious result of voltage instability and the parameters that affect voltage collapse are discussed. In analyzing power system voltage stability, continuation power flow method is utilized which consists of successive load flows. This method is applied to a sample test system and Turkish Power System and load-voltage curves for several buses are obtained.

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Knazkins, Valerijs. "Stability of power systems with large amounts of distributed generation." Doctoral thesis, KTH, Electrical Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-46.

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<p>This four-part dissertation is essentially concerned with some theoretical aspects of the stability studies of power systems with large penetration levels of distributed generation. In particular, in Parts I and II the main emphasis is placed upon the transient rotor angle and voltage stability. The remaining two parts are devoted to some system-theoretic and practical aspects of identification and modeling of aggregate power system loads, design of auxiliary robust control, and a general qualitative discussion on the impact that distributed generation has on the power systems. </p><p>One o

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Aree, Pichai. "Small-signal stability modelling and analysis of power systems with electronically controlled compensation." Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/2600/.

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Flexible AC Transmission Systems (FACTS) equipment is currently being incorporated into the power system for controlling key networks parameters aiming at improving the power system steady-state and dynamic performances. The vast array of power system analysis tools used by planners and system operators, on a daily basis, for the successful running of the network are to be upgraded to include comprehensive modelling for FACTS plant components. Commensurate with this global objective, this research work is aimed at developing comprehensive power system models of FACTS devices suitable for small

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41

Newman, Michael John 1976. "Design and control of a Universal Custom Power Conditioner (UCPC)." Monash University, Dept. of Electrical and Computer Systems Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/5651.

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42

Hawley, Christopher John. "Design and manufacture of a high temperature superconducting magnetic energy storage device." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060508.143200/index.html.

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43

Achkar, Alain J. "Four ways to stabilize a nonholonomic system on the example of a mobile robot." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22637.

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The control of nonholonomic systems is a challenging theoretical problem that has numerous engineering applications. One such interesting application is the control of wheeled mobile robots. This thesis presents four approaches that can be used to control these nonholonomic systems.<br>The first three approaches are used to stabilize a robot mounted on a two-wheeled cart, while the fourth one stabilized a robot mounted on a four-wheeled cart. Feedback linearization can stabilize or track the position but not the orientation of the cart, so practical stabilization can be achieved by tracking a

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44

Gao, Fei. "Decentralised control and stability analysis of a multi-generator based electrical power system for more electric aircraft." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37955/.

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The more electric aircraft initative results in significant challenges in the design of aircraft electrical power systems. Different power system architectures are currently being studied by the engineering community. In this thesis, a promising single DC bus-based, multiple-source multiple-load power system is investigated in terms of power management and stability. Due to its inherent modularity and ease of implementation, droop control, as a decentralised control method, has been widely used to cope with power sharing among parallel sources in the studied architecture. The thesis proposes a

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45

Schmidt, Hernan Prieto. "Analysis of the voltage stability problem in electric power systems using artificial neural networks." Thesis, Queen Mary, University of London, 1994. http://qmro.qmul.ac.uk/xmlui/handle/123456789/28952.

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The voltage stability problem in electric power systems is concerned with the analysis of events and mechanisms that can lead a system into inadmissible operating conditions from the voltage viewpoint. In the worst case, total collapse of the system may result, with disastrous consequences for both electricity utilities and customers. The analysis of this problem has become an important area of research over the past decade due to some instances of voltage collapse that have occurred in electric systems throughout the world. This work addresses the voltage stability problem within the framewor

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46

Lin, Qing. "Small-Signal Modeling and Stability Specification of a Hybrid Propulsion System for Aircrafts." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103515.

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This work utilizes the small-signal impedance-based stability analysis method to develop stability assessment criteria for a single-aisle turboelectric aircraft with aft boundary-layer propulsion (STARC-ABL) system. The impedance-based stability analysis method outperforms other stability analysis methods because it does not require detailed information of individual components for system integration, therefore, a system integrator can just require the vendors to make the individual components meet the impedance specifications to ensure whole system stability. This thesis presents models of a

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Chevalier, Samuel. "Using Real Time Statistical Data To Improve Long Term Voltage Stability In Stochastic Power Systems." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/637.

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Abstract:

In order to optimize limited infrastructure, many power systems are frequently operated close to critical, or bifurcation, points. While operating close to such critical points can be economically advantageous, doing so increases the probability of a blackout. With the continued deployment of Phasor Measurement Units (PMUs), high sample rate data are dramatically increasing the real time observability of the power grids. Prior research has shown that the statistics of these data can provide useful information regarding network stability and associated bifurcation proximity. Currently, it is no

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Khaniya, Dina. "Development of three-phase continuation power flow for voltage stability analysis of distribution systems." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-11142008-101009.

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Al-Ani, Mahsen Salah. "STABILITY IMPROVEMENTS FOR GENERALIZED AVERAGE-VALUE MODEL OF DC-DC CONVERTERS." UKnowledge, 2018. https://uknowledge.uky.edu/ece_etds/121.

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Power electronics have a significant role in modern electrical devices, for instance, hybrid electric vehicles. Power electronics are the technology in between the source and the load circuits and can convert the power from dc to ac or from dc to ac. There are also many types of dc-dc converters, like such as boost and buck converters, which exhibit switching ripple behavior. A boost converter increases the output voltage (with respect to the input voltage) and reduces the output current. A buck converter decreases the output voltage and increases the output current. Many models are used to pr

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Ghanavati, Goodarz. "Statistical Analysis of High Sample Rate Time-series Data for Power System Stability Assessment." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/333.

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Abstract:

The motivation for this research is to leverage the increasing deployment of the phasor measurement unit (PMU) technology by electric utilities in order to improve situational awareness in power systems. PMUs provide unprecedentedly fast and synchronized voltage and current measurements across the system. Analyzing the big data provided by PMUs may prove helpful in reducing the risk of blackouts, such as the Northeast blackout in August 2003, which have resulted in huge costs in past decades. In order to provide deeper insight into early warning signs (EWS) of catastrophic events in power syst

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