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Dissertations / Theses on the topic 'Loop inductor'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Chadha, Ankit. "Tapped-Inductor Buck DC-DC Converter." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1578488939749599.

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2

Baek, Seung Hoon. "STUDY OF MULTI- AND BROAD-BAND INTERNAL ANTENNAS FOR MOBILE APPLICATIONS." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/dissertations/424.

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The modified aperture coupled MicroStrip Antenna (MSA) and Planar Inverted F Antenna (PIFA) for mobile applications are studied and presented in this dissertation. The designed antennas are improved multi-band and broad-band characteristics by the modification of radiating elements and/or the ground plane. The novel modified aperture coupling annular-ring antenna fed by stripline is the hybrid structure of the aperture coupling feed MSA and the proximity feed MSA. The proximity feed enable to concentrate the field strength toward the direction of the radiating element and the modified aperture

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3

Walker, Jeremy M. "Measurement and modeling of the anhysteretic magnetization of magnetic cores for temperature and frequency dependent effects." [Tampa, Fla] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002286.

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4

Gunaydin, Zekiye. "Analysis And Design Of A Cuk Switching Regulator." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610606/index.pdf.

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This theses analyzes Cuk converter, that is one of the dc to dc switching converters. For continuous inductor current mode and discontinuous inductor current mode, stedy state operation is analysied. Characteristic parameters are determined. Through State Space Averge Models, Small Signal Models are obtained. Parasitic Resistance effects on steady state and small signal models are determined. Efficency of the switching converter is derived. Open loop transfer functions for continous and discontinuous inductor curret mode are obtained. Parmeters for small signal behaviour is determined and stab

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5

Giaouris, Damian. "Open loop control and stability of induction motor drives, including wavelets." Thesis, University of Newcastle Upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407618.

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6

Huang, Xianghui. "Diagnotics of Air Gap Eccentricity in Closed-Loop Drive-Connected Induction Motors." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6996.

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The trend toward ever-expanding variable speed induction motor applications results in the need for reliable condition monitoring and detection schemes for closed-loop motor-drive systems. This research focuses on the detection of air gap eccentricity in induction motors supplied by a vector-controlled drive. The majority of existing eccentricity detection techniques is based on monitoring fault harmonics in the stator current. This research analyzes the distribution of the eccentricity-related fault harmonics between the stator voltage and current, and points out that monitoring only the s

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7

Shen, Baike 1972. "Slip frequency phase lock loop (PLL) for decoupled P-Q control of doubly-fed induction generator (DFIG)." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81568.

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The term "sensor-less" in power electronic drives refers to measurement of mechanical shaft position and/or speed from the currents and voltages of the electrical machine. This thesis presents innovative sensor-less means (a Slip Frequency Phase Lock Loop (PLL) and a gamma-delta Axes Aligner) for implementing decoupled P-Q control of a doubly-fed induction generator (DFIG) for wind-turbine application. Proofs of concepts are by digital simulations.<br>The accuracy of the Slip Frequency Phase Lock Loop in speed estimation is evaluated; the origin of a shortcoming (small phase lag) locate

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8

Ertek, Talip Murat. "Speed Estimation Techniques For Sensorless Vector Controlled Induction Motor Drive." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606863/index.pdf.

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This work focuses on speed estimation techniques for sensorless closed-loop speed control of an induction machine based on direct field-oriented control technique. Details of theories behind the algorithms are stated and their performances are verified by the help of simulations and experiments. The field-oriented control as the vector control technique is mainly implemented in two ways: indirect field oriented control and direct field oriented control. The field to be oriented may be rotor, stator, or airgap flux-linkage. In the indirect field-oriented control no flux estimation exists. The a

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9

Berger, Katharina Theresa [Verfasser]. "Attitudinal Ambivalence – A New Look at Structure, Measurement, and Induction Approaches / Katharina Theresa Berger." Tübingen : Universitätsbibliothek Tübingen, 2020. http://d-nb.info/122423278X/34.

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10

Noon, John Patrick. "Development of a Power Hardware-in-the-Loop Test Bench for Electric Machine and Drive Emulation." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/101498.

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This work demonstrates the capability of a power electronic based power hardware-inthe- loop (PHIL) platform to emulate electric machines for the purpose of a motor drive testbench with a particular focus on induction machine emulation. PHIL presents advantages over full-hardware testing of motor drives as the PHIL platform can save space and cost that comes from the physical construction of multiple electric machine test configurations. This thesis presents real-time models that were developed for the purpose of PHIL emulation. Additionally, real-time modeling considerations are presented as

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11

LEMAIRE, PHILIPPE. "Caracterisation et induction des enzymes de biotransformation chez un poisson marin, le loup (dicentrarchus labrax)." Paris 6, 1990. http://www.theses.fr/1990PA066205.

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La metabolisation du bap, les enzymes de biotransformation ainsi que les facteurs influencant cette metabolisation ont ete etudies chez un poisson marin cotier, le loup (dicentrarchus labrax). L'effet des regimes alimentaires sur l'etat physiologique des loups d'aquaculture a ete determine par le suivi de marqueurs de souffrance hepatique correles avec des etudes histopathologiques du foie. La presence d'acide docosahexanoique semble favorable a un bon etat physiologique qui se traduit par des taux de marqueurs seriques proches des valeurs des poissons sauvages avec l'apparition de signes de r

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12

Ertugrul, Baris Tugrul. "Sensorless Vector Control Of Induction Motor Based On Flux And Speed Estimation." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610297/index.pdf.

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The main focus of the study is the implementation of techniques regarding flux estimation and rotor speed estimation by the use of sensorless closed-loop observers. Within this framework, the information about the mathematical representation of the induction motor, pulse width modulation technique and flux oriented vector control techniques together with speed adaptive flux estimation &ndash<br>a kind of sensorless closed loop estimation technique- and Kalman filters is given. With the comparison of sensorless closed-loop speed estimation techniques, it has been attempted to identify their sup

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13

Ozakturk, Meliksah. "Power electronic systems design co-ordination for doubly-fed induction generator wind turbines." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/power-electronic-systems-design-coordination-for-doublyfed-induction-generator-wind-turbines(ebe4de00-07ad-4b06-8b8d-79be291804e7).html.

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Wind turbine modelling using doubly-fed induction generators is a well-known subject. However, studies have tended to focus on optimising the components of the system rather than considering the interaction between the components. This research examines the interaction of the control methods for a doubly-fed induction generator (DFIG) in a wind turbine application integrating them with the crowbar protection control and DC-link brake control to make the best use of the converter. The controls of the rotor-side and the grid-side converters of the DFIG model are both well established and have be

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14

Oliveira, José Rodrigo de. "Emulador de turbina eólica : uma ferramenta para o estudo experimental e computacional /." Bauru, 2019. http://hdl.handle.net/11449/191354.

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Orientador: André Luiz Andreoli<br>Resumo: As fontes renováveis de energia apresentam-se como solução para problemas relacionados ao aumento da demanda por energia elétrica e crescimento dos níveis de emissão de gás carbônico, uma vez que são não poluentes, limpas e abundantes. Aproveitamentos eólicos se mostram como uma das mais promissoras fontes de energia renovável, e por essa razão as pesquisas envolvendo este tipo de aproveitamento têm despertado grande interesse na comunidade científica. Este trabalho apresenta o desenvolvimento de um emulador de turbina eólica (ETE), uma ferramenta de

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15

Mbaitelbe, Koularambaye. "Inductance dans son environnement : caractérisation des inductances planaires intégrées dans les conditions d'utilisation de l'électronique de puissance." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSES012/document.

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Dans les applications de l’électronique de puissance, les inductances sont généralement utilisées avec des formes d’ondes triangulaire et rectangulaire. Dans ces conditions, les inductances ne peuvent pas être caractérisées avec des formes d’ondes sinusoïdales. Il existe dans la littérature plusieurs méthodes de caractérisation des inductances. Aucune de ces méthodes ne permet de caractériser les composants magnétiques intégrés dans des conditions compatibles avec les formes d’onde de l’électronique de puissance. Une nouvelle méthode de caractérisation en temps réel convenable aux composants m

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El, Hatmi Fatiha. "Conception d'antennes de communication à travers le corps humain pour le suivi thérapeutique." Phd thesis, Université Paris-Est, 2013. http://tel.archives-ouvertes.fr/tel-00962121.

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Avec le développement rapide des technologies sans fil modernes et la miniaturisation des antennes et des systèmes électriques, l'emploi des antennes à l'intérieur du corps humain pour le suivi thérapeutique est devenu possible. Des batteries permettent d'alimenter ces antennes ; la réduction de la consommation de puissance implique l'augmentation de la durée de vie de circuits ingérables. Le corps humain, qui a une conductivité non nulle, n'est pas un milieu idéal pour la transmission des ondes RF à cause de l'atténuation liée aux propriétés diélectriques des tissus biologiques. Cependant, le

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17

Alsmadi, Yazan M. "Modeling, Advance Control, and Grid Integration of Large-Scale DFIG-Based Wind Turbines during Normal and Fault Ride-Through Conditions." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437140573.

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18

Trinkūnaitė, Ingrida. "Asinchroninės bejutiklės pavaros modeliavimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110621_170245-16691.

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Baigiamajame darbe sudarytas uždarosios asinchroninės bejutiklės vektoriškai valdomos pavaros imitacinis modelis ir ištirtos charakteristikos. Teorinėje darbo dalyje yra aptariami asinchroninių elektros pavarų privalumai bei šiose pavarose naudojami greičio jutikliai. Aprašomi stebiklių privalumai bei trūkumai, pagrindžiamas jų naudojimas asinchroninėse pavarose. Nagrinėjami bejutiklių elektros pavarų ypatumai, aprašomi vektorinio valdymo bendrieji principai bei aprašomi bejutiklėse vektoriškai valdomose pavarose naudojamų stebiklių modeliai. Pateikiami du skirtingi asinchroninių variklių mate

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Zambrano, Martínez Jorge Luis. "Efficient Traffic Management in Urban Environments." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/129865.

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[ES] En la actualidad, uno de los principales desafíos a los que se enfrentan las grandes áreas metropolitanas es la congestión provocada por el tráfico, la cual se ha convertido en un problema importante al que se enfrentan las autoridades de cada ciudad. Para abordar este problema es necesario implementar una solución eficiente para controlar el tráfico que genere beneficios para los ciudadanos, como reducir los tiempos de viaje de los vehículos y, en consecuencia, el consumo de combustible, el ruido, y la contaminación ambiental. De hecho, al analizar adecuadamente la demanda de tráfico, es

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20

Huang, Tzu-Chi, and 黃梓期. "All Digital Phase-Locked Loop Using Active Inductor Oscillator." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40441356915930297288.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>97<br>Phase-locked loop (PLL) is a widely used circuit for clock generation and RF front-end systems. All digital designs have been researched in recent years because of the high area efficiency, adjusting to different process and low noise. In this paper, an all-digital phase-locked loop (ADPLL) using active inductor digital controlled oscillator is presented. The digital controlled active inductor offers a wide operating frequency range, good signal quality and small chip area. The novel phase lock in algorithm has the characteristics of high jitter performance,

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21

Chen, Jyun-Hong, and 陳俊宏. "The closed-loop control for dual-output boost converter with single inductor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15699077330379975432.

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22

Yeh, Ming-Chieh, and 葉明杰. "Phase-Locked Loop Control for Electronic Ballasts with Inductor Voltage-Phase Feedback." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/56469420553286827124.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>93<br>This thesis proposes a novel phase-locked loop (PLL) control technique for electronic ballasts, using the phase-feedback signal from the resonant inductor. With the proposed PLL control technique, the operating frequency of the ballast is able to continuously track the resonant frequency of the resonant tank at different load conditions, thus providing constant lamp current. 　　　In general, the aging of lamps causes variations in equivalent resistance at steady state, which leads to changes in voltage gain for the resonant tank in the electronic ballast. T

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23

Chou, Chia-Hsing, and 周家興. "The Closed-Loop Control for Dual-Output Buck-Boost Converter with Single Inductor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15494635684654828444.

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碩士<br>中華大學<br>電機工程學系碩士班<br>94<br>The inductors contain most volume and weight of a power supply. When designing a new electronic product with small volume, it is important to consider that how to design a power supply providing multiple voltage outputs with the smaller volume and light weight. Therefore, the number of inductorsmust be considered. This study develops the structure in which single inductor is used for dual-output buck-boost converter. Since the structure is PWM-switching nonlinear circuit, it is very difficult to analyze exactly. The study proposes a method that the PWM-switc

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Lin, Yu-Kai, and 林郁凱. "Design and Implementation of a Closed-Loop High-Gain Switched-Capacitor-Inductor-Based Boost DC-AC Inverter." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ybg2uh.

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碩士<br>朝陽科技大學<br>資訊工程系<br>103<br>A closed-loop scheme of a high-gain switched- capacitor-inductor-based (SCI-based) boost DC-AC inverter is proposed by combining a phase generator and sinusoidal pulse- width-modulation (SPWM) controller for the step-up inversion and regulation. The power part is composed of two cascaded sub-circuits, including (i) a SCI booster with one inductor, and 4 pumping capacitors, and 7 switches controlled by phase generator, and (ii) a H-bridge DC-link inverter with 4 switches controlled by SPWM, so as to obtain a steady-state voltage range: +4Vs/(1-D0)~ -4Vs/(1-D0) fo

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Ko, Chih-Chieh, and 葛致杰. "An Inductor Current Balancing Technique for Fast-locking Delay-locked Loop Based Four-phase Buck Converter with Transient-modulated Constant On-time Control for Fast Load Transient Response." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/my8ny7.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>107<br>This thesis presents a fast-locking delay-locked loop (DLL) based four-phase DC-DC buck converter, which is manipulated by transient-modulated constant on-time control (TMCOT). Besides, a novel inductor current balancing method called pulse-width-shrunk technique (PWST) is proposed and it is capable of simultaneously calibrating the duty cycle and the phase error of pulse-width modulation (PWM) signals in the DLL-based multi-phase converter. For the sake of much faster load transient response, the DLL adopts a modified dual edge triggered phase detector (DET-

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26

Chen, Chao-Hung, and 陳昭宏. "Speed Control of Induction Motor with Closed-Loop Flux Observer." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/98685796385891910937.

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碩士<br>國立臺灣科技大學<br>工程技術研究所自動化及控制學程<br>87<br>A closed-loop rotor flux observer with on-line parameter tuning is presented to control the speed and power efficiency of the induction motor in this paper. First, the rotor flux is estimated by the closed-loop rotor flux observer and an adaptive tuning algorithm using a model reference adaptive system is proposed to further improve the performance of the rotor flux observer topology. The decoupling of the motor torque and rotor flux amplitude is based on the input-output linearization theory. Meantime, a composite adaptive speed control algorithm is

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27

Lin, Ming-Tsz, and 林銘賜. "Development and Test of an Induction-Loop Speed Measuring System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/11668558220173105375.

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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>97<br>Taiwan’s police have used induction loops for red-light monitoring and speed measurement at intersections for over 20 years. A lot of these devices are in use. In order to keep their accuracy in a definite range, they must be calibrated and inspected regularly. In the annual inspection of these systems, a simulator is used to provide various speed signals to the machine’s detectors to check their ability to detect a vehicle’s speeds. In this paper, a series of experiments on the interaction between the induction loop and a vehicle were done. These expe

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28

Tung-Jenn, Chen, and 陳東進. "Open-Loop Speed Control of Three-Phase Induction MotorUsing Single-Chip PIC16F877." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/60784081426301473359.

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碩士<br>崑山科技大學<br>電機工程研究所<br>94<br>This thesis develops a combination of single-chip microprocessor PIC16F877 and LabVIEW software to the open-loop speed drive and monitoring of three-phase induction motor. The traditional method of speed control for three-phase induction motor contains vector control and scalar control. The former has better control performance. But the complicated mathematics model of this method often makes the system designer to halt in hesitation. Therefore, the scalar control has come into being another option for the system designer in which the control system is not seve

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29

Meenakshi, Sundaram Vivek. "Diagnosis and Isolation of Air Gap Eccentricities in Closed-loop Controlled Doubly-Fed Induction Generators." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9136.

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With the widespread use of doubly-fed induction generators (DFIG) in wind energy conversion systems, condition monitoring is being given importance. Non-intrusive techniques like motor current signature analysis (MCSA), which involves looking for specific frequency components in the current spectrum, are preferred over analysis of magnetic field, temperature, vibrations or acoustic noise which require additional sensors. The major difficulty in MCSA is isolation of the fault, as multiple faults produce similar signatures. Moreover, closed-loop control makes diagnostics more complicated due to

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Shin-ShiangLan and 藍信翔. "The Design and Implementation of Hardware-in-the-Loop Tester System for Induction Motor Driver." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/52580050096011069973.

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碩士<br>國立成功大學<br>電機工程學系專班<br>100<br>In developing motor driver system, any application and process must be examined in details to meet the requirements of efficiency, stability and reliability. For this purpose, tests have to be conducted with various devices and different mechanical loads. In order to reduce the time, cost and risk associated with control system development, the virtual motor in hardware-in-the-loop (HIL) can be applied. This thesis describes an AC motor driver test system implemented with virtual motor in HIL test platform. The HIL application utilizes open hardware and s

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Chia-HaoLi and 李嘉豪. "The Design and Implementation of Real-Time Hardware-in-the-Loop Simulation Intellectual Property for Induction Motor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/90295765544557036804.

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碩士<br>國立成功大學<br>資訊工程學系<br>102<br>It requires diverse specialties or companies to develop a large induction motor system. For controller developer, it is crucial to give a test and verify the functionality of the controller before leaving the company. Yet the high-price of the whole induction motor system obstructs the controller testing process. Even though the induction motor system is available, it is still extremely insecure to test the controller with physical induction motor system. In the thesis, we provide an induction motor system simulation digital circuit design by adopting the hardw

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Lin, Kun-Yu, and 林昆餘. "Modeling and Design of Feedback Loops for a Voltage-Mode Single-Inductor Dual-Output (SIDO) Buck Converter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/28721356829937000001.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>96<br>Abstract－In recent years, single-inductor dual-output (SIDO) switching converters have found applications in hand-held electronic devices. It features single inductor, dual regulated outputs and therefore saves cost and size/weight. When operated in discontinuous conduction mode (DCM), the two switches in the converter work independently for the two outputs regulated by two independent feedback loops. The design of the converter feedback under such condition is therefore very much like conventional single-inductor buck converters. When it’s operated in a conti

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Guha, Anirudh. "Dead-Time Induced Oscillations in Voltage Source Inverter-Fed Induction Motor Drives." Thesis, 2016. http://hdl.handle.net/2005/2873.

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The inverter dead-time is integral to the safety of a voltage source inverter (VSI). Dead-time is introduced between the complementary gating signals of the top and bottom switches in each VSI leg to prevent shoot-through fault. This thesis reports and investigates dead-time induced sub-harmonic oscillations in open-loop induction motor drives of different power levels, under light-load conditions. The thesis develops mathematical models that help understand and predict the oscillatory behaviour of such motor drives due to dead-time act. Models are also developed to study the impact of under-c

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34

Cuzner, Robert M. "Application of closed loop non-linear observers for position detection on induction motors using the induced spatial harmonic emf in the machine voltages and currents." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23601531.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1990.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 194-199).

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Tangerino, Bruno Henrique Boschetti. "Power converters control for photovoltaic water pumping system." Master's thesis, 2018. http://hdl.handle.net/10198/19110.

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This work proposes solutions to challenges encountered in photovoltaic water pumping systems, such as the issue in the number of photovoltaic modules in low power systems, the maximum power point tracking and its implementation, as well as the pump control system. The maximum power point tracking is achieved via the addition of a step-up converter controlled by a proportional-integral controller. The system load is comprised by an induction motor, controlled by an open-loop scalar strategy. Simulations and real platform tests with solar radiance variation and variable number of photovolt

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Sinha, Saurabh. "A multi-dimensional spread spectrum transceiver." Thesis, 2008. http://hdl.handle.net/2263/28885.

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The research conducted for this thesis seeks to understand issues associated with integrating a direct spread spectrum system (DSSS) transceiver on to a single chip. Various types of sequences, such as Kasami sequences and Gold sequences, are available for use in typical spread spectrum systems. For this thesis, complex spreading sequences (CSS) are used for improved cross-correlation and autocorrelation properties that can be achieved by using such a sequence. While CSS and DSSS are well represented in the existing body of knowledge, and discrete bulky hardware solutions exist – an effort to

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