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Dissertations / Theses on the topic 'And Voltage Regulation'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Ayeni, Tobiloba. "A synchrophasor application in voltage regulation." Thesis, Ayeni, Tobiloba (2014) A synchrophasor application in voltage regulation. Other thesis, Murdoch University, 2014. https://researchrepository.murdoch.edu.au/id/eprint/23514/.

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As population growth increases power demand, power industries all around the world become increasingly complex; and therefore, unpredictable. Hence, it is not surprising that undesirable events such as voltage collapse and power blackout incidents occur more frequently. However, since the healthy operation of power systems not only increases distribution efficiency but also reduces cost and allows for a safe operation, the power industry is challenged with the development of countermeasures in order to mitigate the occurrence of these undesirable events and enable the maintenance of an accepta

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2

Alzubaidi, Jaafar, and Rasmus Antonsson. "Voltage Regulation for an Electrical Grid." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254265.

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The aim of this study is to analyse the voltage regulation of a power grid when wind power parks are connected to an existing power grid. Secondary the project have studied the placement of these wind power parks and costs related to connecting them to the grid. The goal was to achieve this grid with a smaller than 5% voltage margin and preferably a low phase deviation. The power grid is located in the area around Lule älven. Several issues with constructing and connecting windpower parks to an electrical grid have been studied by numerical analysis of a fictive grid but with real world variab

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3

Wang, Shiyi. "Regulation of voltage-gated calcium channels Cav1.2." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/6009.

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Voltage-gated Ca2+ (Cav) channels are activated upon depolarization. They specifically allow Ca2+ ions to come into the cell. These Ca2+ ions are bi-functional because they not only control cell excitability but also couple electrical activity to complex downstream signaling events, such as excitation-contraction coupling in muscles and neurotransmitter release in neurons. In the brain, Cav channels are expressed in the pre- or post-synaptic membrane of most excitable cells, neurons. In the past few years, their expression and function have also been characterized in many nonexcitable cells su

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4

Rossouw, Frans Jacobus. "Analysis of voltage regulation and network support technologies." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51588.

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Thesis (MEng)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: Recent advances in semiconductor device development pushed a large number of network devices onto the market. These devices can solve network problems more effectively and economically than ever before. Network planners need tools to analyse and implement such devices to help solve the largest network problem in South Africa: voltage regulation. Rural networks experience the majority of voltage-regulation problems in South Africa. The networks are long sub-transmission and reticulation networks and are modelled by two

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5

Girbino, Michael James. "Detecting Distribution-Level Voltage Anomalies by Monitoring State Transitions in Voltage Regulation Control Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1550483383962611.

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6

Guimaraes, Geraldo C. "Computer methods for transient stability analysis of isolated power generation systems with special reference to prime mover and induction motor modelling." Thesis, University of Aberdeen, 1990. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU028173.

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This thesis aims to establish computer methods for the transient stability analysis of electric power systems which operate isolated from the large interconnected system. A typical isolated system is characterized by a compact network in which the size of the load is relatively large when compared to the total, installed generation capacity. The stability problems are thus more severe for this system than for the grid-type system. This results in the need for more accurate representations for the system components in the computer studies. This work considers particularly the prime mover and th

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7

Nye, Jonathan Mark. "Increasing distributed generation penetration when limited by voltage regulation." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86605.

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Thesis (MEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: This work investigated the influence of photo-voltaic generators on the voltage control of distribution feeders and the methods that can be used to increase the maximum penetration levels of these feeders. Initially, a brief overview of the reasons why it is necessary to increase the generation penetration levels on distribution feeders was provided. A review of various issues associated with connecting generation to the distribution network; methods and technologies that can be used to increase penetration levels; and ways to

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8

侯經權 and King-kuen Hau. "AC mains voltage regulation by solid-state power conversiontechniques." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31209737.

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9

Reynolds, Alistair Martyn. "Regulation of the voltage-gated calcium conductance in photoreceptors." Thesis, King's College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265758.

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10

Jalali, Mana. "Voltage Regulation of Smart Grids using Machine Learning Tools." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/95962.

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Smart inverters have been considered the primary fast solution for voltage regulation in power distribution systems. Optimizing the coordination between inverters can be computationally challenging. Reactive power control using fixed local rules have been shown to be subpar. Here, nonlinear inverter control rules are proposed by leveraging machine learning tools. The designed control rules can be expressed by a set of coefficients. These control rules can be nonlinear functions of both remote and local inputs. The proposed control rules are designed to jointly minimize the voltage deviation ac

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11

Sun, Jiwei. "Voltage Regulation of DC-microgrid with PV and Battery." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1491317136778018.

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12

Hau, King-kuen. "AC mains voltage regulation by solid-state power conversion techniques /." [Hong Kong] : University of Hong Kong, 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13009503.

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13

Hellal, Abdelhafid. "Control coordination of SVCs for voltage regulation in power systems." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70286.

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One of the principal functions of static var compensators (SVCs) in a transmission system is the voltage control at the point of connection. As power and transmission systems have grown considerably in the last decades, many systems have been interconnected for economic reasons. The use of SVCs became more important as the systems were required to operate at higher power levels, which led to a reduction in the stability margin. Increasing the number of SVCs in a network is one of the solutions, but it leads to undesirable interactions among them, which affect the stability limits. Control coor

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14

Holloway, Jack Wade 1980. "Harmonic control of multiple-stator induction machines for voltage regulation." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28691.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 133-135).<br>Small, one to a few horsepower, three-phase induction machines with three sets of electrically-isolated, magnetically-coupled stator winding circuits are described. A voltage inverter is developed and used to drive one set of the machine stator winding circuits. The second set of machine stator winding circuits is connected to a three-phase rectifier in which a path for zero-sequence current is provided from the winding cir

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15

Onkal, Rustem. "Neonatal Nav1.5 voltage-gated Na+ channel : regulation, electrophysiology and pharmacology." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/11742.

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The overall aims of this PhD were (1) to evaluate the mechanisms controlling functional expression of neonatal Nav1.5 (nNav1.5), the predominant voltage-gated sodium channel (VGSC) subtype expressed in metastatic human breast cancer (BCa) cells, and (2) to characterize the electrophysiological and pharmacological properties of nNav1.5 compared with the adult Nav1.5 (aNav1.5) counterpart. Experiments were carried out under normoxic and hypoxic conditions. The Results chapter-1 demonstrates the hypoxic upregulation of functional VGSC (nNav1.5) expression in MDA-MB-231 human BCa cells, proposed t

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16

Betto, Giulia. "Regulation by calcium, voltage and permeant anions of TMEM16B/anoctamin2." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3859.

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Ca2+- activated Cl- channels (CaCCs) play important roles in many physiological processes, including olfactory transduction, modulation of light photoreceptor responses, epithelial secretion. The molecular identity of these channels has been elusive for a long time, but recently it was shown that two members of the TMEM16/anoctamin family, TMEM16A/anoctamin1 and TMEM16B/anoctamin2, are responsible for CaCCs in several cells. At present, little is known about the structure-function relations for TMEM16A and TMEM16B. In the first part of this Thesis, we performed for the first time a site-direct

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17

Sridhar, Arun. "Regulation of cardiac voltage gated potassium currents in health and disease." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1186603836.

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18

Zou, Ke. "The Topology and Voltage Regulation for High-power Switched-capacitor Converters." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343668215.

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19

Mandali, Anusree. "Voltage Regulation Control on a Power System with Static Var Compensator." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1504863882578828.

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20

Bathfield, Gregory. "A series-connected VSC for voltage regulation, balancing and harmonics mitigation." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/5242.

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Word processed copy.<br>Includes bibliographical references.<br>Voltage sensitive electronic equipment, such as computers, process controllers, programmable logic controllers, adjustable speed drives and robotic devices is increasingly used in modern industrial processes. Industrial loads thus require a supply free of voltage disturbances such as voltage dips, swells, unbalances and harmonics. The effect of these disturbances may be as bad as a complete shut down of a production line, hence giving rise to the growing interest and need, for mitigation of such power quality problems. The objecti

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21

Yamada-Hanff, Jason. "Regulation of hippocampal pyramidal neuron excitability by subthreshold voltage-dependent conductances." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14226098.

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The single neuron’s decision of whether to fire an action potential is the central computation underlying neural function. This transformation of synaptic inputs into an output pattern of spikes is controlled by the interaction of synaptic input with the neuron’s intrinsic membrane properties. During this process, the neural membrane is not just a passive receiver of input but reacts dynamically to input via the activity and modulation of ion channels that are active below the action potential threshold. The goal of this work was to examine how such subthreshold voltage-dependent conductances

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22

Li, Yan. "Voltage-gated potassium channels in porcine granulosa cells : function and regulation /." Search for this dissertation online, 2003. http://wwwlib.umi.com/cr/ksu/main.

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23

Wang, Longfei. "High Performance Distributed On-Chip Voltage Regulation for Modern Integrated Systems." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7590.

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Distributed on-chip voltage regulation where multiple voltage regulators are distributed among different locations of the chip demonstrates advantages as compared to on-chip voltage regulation utilizing a single voltage regulator. Better on-chip voltage noise performance and faster transient response can be realized due to localized voltage regulation. Despite the advantages of distributed on-chip voltage regulation, unbalanced current sharing issue can occur among each voltage regulator, which has been demonstrated to deteriorate power conversion efficiency, stability, and reliability of the

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24

Skoglund, Oscar. "Dynamic voltage regulation using SVCs : A simulation study on the Swedish national grid." Thesis, KTH, Elektriska energisystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-136869.

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Voltage stability is a major concern when planning and operating electrical power systems.As demand for electric power increases, power systems are stressed more and more. TheFACTS family of components were introduced to utilize the existing grid to a higherdegree, while still maintaining system stability.This thesis investigates if the addition of another SVC to the Swedish national gridcould increase the power transfer from north to south. Placement of the SVC was basedon two different indices used to indicate weak areas of the grid; the Q-V sensitivity indexand the V CPI index.Simulations w

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25

Gardam, Kate Elizabeth. "Regulation of cation channel voltage- and Ca2+-dependence in Aplysia bag cell neurons." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1370.

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26

Pang, Chunyan. "REGULATION OF L-TYPE VOLTAGE-DEPENDNET CALCIUM CHANNELS BY THE REM GTPASE." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_diss/656.

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The Rem, Rem2, Rad, and Gem/Kir GTPases, comprise a novel subfamily of the small Ras-related GTP-binding proteins known as the RGK GTPases, and have been shown to function as potent negative regulators of high voltage-activated (HVA) Ca2+ channels upon overexpression. HVA Ca2+ channels modulate Ca2+ influx in response to membrane depolarization to regulate a wide variety of cellular functions and they minimally consist of a pore-forming α1 subunit, an intracellular β subunit, and a transmembrane complex α2/δ subunit. While the mechanisms underlying RGK-mediated Ca2+ channel regulation remain p

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27

Norman, Rosemary Anne. "High-performance current regulation for voltage-source-inverter-fed induction motor drives." Thesis, University of Bradford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514187.

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28

Fuchs, Jason R. "Learning Related Regulation of a Voltage-Gated Ion Channel in the Cerebellum." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/459.

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The neural mechanisms that support learning and memory are still poorly understood. Much work has focused on changes in neurotransmitter receptor expression, while changes in voltage-gated ion channel expression have been largely unexplored, despite the fact that voltage-gated ion channels govern neuronal excitability. Here we used eyeblink conditioning (EBC) in rats, a model of learning and memory with a well-understood neural circuit, to examine regulation of voltage-gated ion channels as a consequence of learning. EBC is a form of classical conditioning that involves pairings of a behaviora

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29

Petitprez, Séverine. "Cardiac and muscle channelopathies : roles and regulation of voltage-gated sodium channels." Paris 7, 2009. http://www.theses.fr/2009PA077257.

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La contraction des cellules musculaires est due à la propagation d'un stimulus électrique appelé potentiel d'action (PA). Il est produit par l'ouverture séquentielle de plusieurs canaux ioniques générant des courants à travers les membranes cellulaires. Les canaux sodiques dépendant du voltage (Nav) déclenchent la première phase du PA. Les variants Nav1. 4 et Nav1. 5 sont exprimés respectivement dans le muscle et le coeur. Des mutations de leurs gènes (SCN4A et SCN5A) provoquent respectivement des pathologies neuromusculaires et des arythmies cardiaques. Mon travail de thèse a consisté à étudi

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30

Kitson, Joanne. "Shunt regulation of a three-phase voltage bus by means of a bi-directional voltage-fed quasi Z-source inverter." Thesis, University of Bristol, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761205.

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31

Aintablian, Hrair. "External characteristics and voltage regulation of a 3-phase induction generator under load." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182275061.

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32

Khan, Muhammad Zafar Ullah. "Microprocessor controlled PWM inverters for UPS applications." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/28190.

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This thesis describes the implementation of microprocessor controlled single-phase and three-phase inverters for UPS applications. A carrier frequency of 18 kHz is employed in both cases, and the PWM pulses are generated directly by the microprocessor using the regular-sampled symmetric PWM strategy. Single-edge modulation as well as double-edge modulation has been implemented for single-phase and three-phase systems. Since in general, software implementation of PWM strategies require precalculated pulse width values, a scheme is proposed which enables the large quantity of such data to be han

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33

Chowdhury, Inshad. "EFFICIENT VOLTAGE REGULATION USING SWITCHED CAPACITOR DC/DC CONVERTER FROM BATTERY AND ENERGY HARVESTING POWER SOURCES." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/204300.

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Recent portable electronic technologies require the power management circuit be efficient, small and cost effective. The switched-capacitor (SC) converter provides a trade-off between the efficiency, the size and the cost that is desirable in many of these new portable technologies. This dissertation investigates different circuit techniques and SC converter topologies to make the SC converters fully adapt to the portable system requirements. To make the SC converter efficient over a wide range of input and output voltages, a family of SC power stages with multiple gain ratio (GR) is developed

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34

Mwaniki, Fredrick Mukundi. "High voltage boost DC-Dc converter suitable for variable voltage sources and high power photovoltaic application." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/37320.

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Important considerations of a photovoltaic (PV) source are achieving a high voltage and drawing currents with very little ripple component from it. Furthermore, the output from such a source is variable depending on irradiation and temperature. In this research, literature review of prior methods employed to boost the output voltage of a PV source is examined and their limitations identified. This research then proposes a multi-phase tapped-coupled inductor boost DC-DC converter that can achieve high voltage boost ratios, without adversely compromising performance, to be used as an interface t

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35

Qiu, Fengjing. "Analog very large scale integrated circuits design of two-phase and multi-phase voltage doublers with frequency regulation." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175632756.

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36

Choi, Eun Kyung. "Regulation of KCNQ1 potassium channel trafficking and gating by KCNE1 and KCNE3 /." Access full-text from WCMC, 2009. http://proquest.umi.com/pqdweb?did=1692648191&sid=1&Fmt=2&clientId=8424&RQT=309&VName=PQD.

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37

Myszak, Moira. "Pharmacological regulation of the voltage-sensitive release mechanism in guinea pig ventricular myocytes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24979.pdf.

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38

Tammaro, Paolo. "The role and regulation of voltage-gated potassium channels in vascular smooth muscle." Thesis, University of Bath, 2003. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288853.

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39

Niklasson, Johan. "Investigation and Determination to the Most Effective Method of Voltage Control for Zone Substations." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18683.

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Power quality is an issue of ever increasing importance, and with ever increasingcustomer expectations on such issues, the significance of supplying customers withhigh quality power can never be underestimated. One of the most important mattersthat define power of good quality is the voltage level each customer is supplied with.Most appliances are designed to operate satisfactorily only within a narrow range ofsupply voltages. Inappropriate supply voltages can not only result in poor performingappliances, it can also cause equipment damage, increase distribution losses anddecrease the revenue

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Radi, Mohammed A. M. "Power electronics considerations for voltage regulation and VAR control approaches in LV distribution networks-hybrid power electronic modules." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/14697.

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The future substation depends on finding a way to mitigate the effects of the drawbacks of the conventional legacy by employing the efficiency of the solid state switches in light of changing the loading features by time such as Electrical Vehicles (EV) and Photo-voltaic (PV) cells. In distribution transformers the ratio between the primary voltage and the secondary voltage cannot be changed, and the use of the on-load taps changers are limited. Poor voltage regulation and reactive power transmission is a direct reason for losses and shortening the life of several devices. This research discus

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41

Padilha, Lucas Nery. "Análise comparativa de estratégias para regulação de tensão em sistemas de distribuição de energia elétrica na presença de geradores distribuídos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-10082010-141601/.

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Para que a instalação de geração distribuída possa de fato beneficiar a operação das redes de distribuição e de subtransmissão de energia elétrica, seus impactos técnicos devem ser cuidadosamente estudados, sobretudo em redes de distribuição, as quais foram inicialmente planejadas para operar com fluxo de potência unidirecional. Dentre esses impactos, a influência da geração distribuída na regulação da tensão é um aspecto de suma importância, pois está diretamente relacionada à qualidade do fornecimento da energia elétrica aos consumidores. Neste contexto, é importante conhecer e dispor de mei

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Mitsuru, Hirano. "Elucidation of subcellular regulation of voltage-dependent calcium channel functions via β subunit interacting molecules". Kyoto University, 2017. http://hdl.handle.net/2433/226787.

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Tinarwo, David. "Design of village power and micro-grids for rural areas of Zimbabwe with specific attention to voltage regulation on low voltage meshed distribution grids." Kassel Kassel Univ. Press, 2008. http://d-nb.info/992891205/04.

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Brackenbury, William John. "Regulation of voltage-gated Na+ channel expression in human and rat model carcinoma cell lines." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429324.

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Vickery, Owen N. "The interplay of sodium and voltage in the regulation of G-protein coupled receptor signalling." Thesis, University of Dundee, 2018. https://discovery.dundee.ac.uk/en/studentTheses/37d69ac4-ec4e-4717-b21f-7064474c9492.

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Playing a central role in cell signaling, G-protein coupled receptors (GPCRs) form the largest superfamily of membrane proteins and approximately a third of all drug targets in humans. The membrane potential is one of the defining characteristics of living cells. Recent work has shown that the membrane voltage, and changes thereof, modulates signal transduction and ligand binding in GPCRs. As it may allow differential signalling patterns depending on tissue, cell type, and the excitation status of excitable cells, GPCR voltage sensitivity could have important implications for their pharmacolog

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Sharma, Anushree. "A Corrective Strategy for Voltage Regulation in Distribution Grids with Plug-in Hybrid Electric Vehicles." Thesis, North Dakota State University, 2013. https://hdl.handle.net/10365/26674.

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The increasing integration of Plug-in Hybrid Electric Vehicles (PHEV) poses unique challenges for voltage and frequency regulation in electric distribution grids. The mobility and variability due to PHEV loads exacerbates the problem of voltage regulation in distribution grids that are characterized by high R/X ratios. Numerous studies have explored the impact of PHEV integration on distribution grids, corrective strategies have been mainly limited to designing constrained charging profiles. This thesis examines the effect of different charging profiles and then presents a corrective strategy

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47

Mponwana, Samuel. "The impact of voltage unbalance and regulation on the life expectancy of LV induction machines." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/31008.

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The induction machine is the most widely used electrical machine in the world, they are used for industrial, commercial and industrial applications. When manufactured they have nameplate ratings that stipulate the voltages and currents at which they may be operated. The quality of supply from power utilities can lead to them being operated under unbalanced voltage conditions. Power utilities experience voltage unbalances and voltage dips when they provide services to end users. In South Africa ESKOM is the primary power utility, it has a license agreement with NERSA stipulating the allowable v

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48

Seebungkert, Benchamaporn. "The physiological regulation of the voltage gated K+ and Na+ channels in olfactory receptor neurons /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16428.pdf.

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49

Liu, Kuang-Jung, and 劉廣榮. "Voltage Regulation Using Static Synchronous Condensers." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/40863397230004335594.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>89<br>Excessine voltage variations have been observed on the customer side due to faults on the system or load fluctuations. To regulate and improve load voltage profiles, a static synchronous condenser（STATCON）is presented in this thesis. The proposed STATCON uses a three phase voltage-source Sine-Pulse Width Modulation（SPWM）inverter with a common dc capacitor. The control kernel of the STATCON is implemented by a PC-based digital system with Adventec PCL-1800 data acquisition boards. From results of simulations and experiments, it is found that load vol

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劉宏毅. "STUDY OF VOLTAGE COLLAPSE DETECTION AND VOLTAGE REGULATION IN A POWER SYSTEM." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/7cnw85.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>92<br>In this thesis, we present a means of the detection of voltage collapse in a power system based on the linear-based fault identification filter (FIDF) design technique. Moreover, in order to promote the voltage quality of power supply for secure operation of a power system. We employ Variable Structure Control technique to design the voltage regulator of a power system. In addition, a load estimator is proposed to provide the accurate load variation to the VSC voltage regulator to have better regulating capacity. Finally, we combine the prior designs to maint

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