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Dissertations / Theses on the topic 'Control techniques of DC-DC converters'

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Published: 4 June 2021
Last updated: 4 February 2022

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1

Wan, Kai. "Advanced current-mode control techniques for DC-DC power electronic converters." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Wan_09007dcc80642d38.pdf.

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Thesis (Ph. D.)--Missouri University of Science and Technology, 2009.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 4, 2009) Includes bibliographical references.
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2

Batarseh, Majd. "DIGITAL PULSE WIDTH MODULATOR TECHNIQUES FOR DC - DC CONVERTERS." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4358.

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Recent research activities focused on improving the steady-state as well as the dynamic behavior of DC-DC converters for proper system performance, by proposing different design methods and control approaches with growing tendency to using digital implementation over analog practices. Because of the rapid advancement in semiconductors and microprocessor industry, digital control grew in popularity among PWM converters and is taking over analog techniques due to availability of fast speed microprocessors, flexibility and immunity to noise and environmental variations. Furthermore, increased int
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3

Algreer, Maher Mohammed Fawzi Saber. "Microprocessor based signal processing techniques for system identification and adaptive control of DC-DC converters." Thesis, University of Newcastle Upon Tyne, 2012. http://hdl.handle.net/10443/1554.

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Many industrial and consumer devices rely on switch mode power converters (SMPCs) to provide a reliable, well regulated, DC power supply. A poorly performing power supply can potentially compromise the characteristic behaviour, efficiency, and operating range of the device. To ensure accurate regulation of the SMPC, optimal control of the power converter output is required. However, SMPC uncertainties such as component variations and load changes will affect the performance of the controller. To compensate for these time varying problems, there is increasing interest in employing real-time ada
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4

Bezerra, Gabriel Ribeiro. "Modeling and control of The DC-DC Buck-Boost converter using parametric identification techniques." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14745.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>This work presents procedures for modeling a Buck-Boost converter based on offline parametric identification techniques, with employment of black box and gray box models. For the identification of the control-to-output-voltage transfer function, the nonlinear Hammerstein model is employed, a particularly interesting structure to identify DC-DC converters for its ability to incorporate nonlinear static characteristic aside from the dynamic behavior of the plant. The identification of the mentioned transfer function is achieved from i
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5

Deniéport, Romain. "Amélioration du rendement énergétique et de la dynamique d'entrée de convertisseurs d’énergie isolés par l’utilisation de techniques analogiques et numériques de commande." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112381.

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Les travaux présentés ici proposent des convertisseurs d’énergie à haut rendement et très large dynamique de tension d’entrée, c'est-à-dire capables de fonctionner avec un rendement énergétique élevé sur une plage de tension d’entrée étendue (typiquement de 9V à 200V). De multiples tensions de réseaux sont standards dans l’industrie : elles sont spécifiques à un domaine (aéronautique, ferroviaire, …) et dépendent de la source primaire d’alimentation électrique (batterie d’accumulateurs, génératrice, …). Au sein d’un équipement embarqué, plusieurs réseaux peuvent cohabiter : une alimentation pr
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6

Cheng, Ka Wai Eric. "Quasi-resonant dc-dc converters using constant frequency techniques." Thesis, University of Bath, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253992.

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7

Peng, Hao. "Digital current mode control of DC-DC converters." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3207767.

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8

Elbkosh, Abdulmajed Omar. "Nonlinear analysis and control of dc-dc converters." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500937.

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It is well known that switching dc-dc converters show a wide range of nonlinear behaviours including bifurcation, sub-haraionics and chaos when they operate outside their design specifications. These nonlinear patterns force the converter to change its normal periodic behaviour to a random-like behaviour; a situation that must be avoided. In this thesis, the nonlinear dynamics of switching dc-dc converters are investigated. It is shown for the first time that the concept of the monodromy matrix (i.e. the state transition matrix for one switching cycle, including the state transition matrices d
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9

Wang, Jing. "Control of current ripple in a dc-dc converters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0017/NQ27268.pdf.

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10

Luo, Feng. "Integrated Switching DC-DC Converters with Hybrid Control Schemes." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/193904.

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In the modern world of technology, highly sophisticated electronic systems pave the way for future's information technology breakthroughs. However, rapid growth on complexity and functions in such systems has also been a harbinger for the power increase. Power management techniques have thus been introduced to mitigate this urgent power crisis. Switching power converters are considered to be the best candidate due to their high efficiency and voltage conversion flexibility. Moreover, switching power converter systems are highly nonlinear, discontinuous in time, and variable. This makes it viab
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11

Li, Pengfei. "Synchronization and control of high frequency dc-dc converters." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041162.

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12

AL-HOOR, WISAM. "ADAPTIVE EFFICIENCY OPTIMIZATION FOR DIGITALLY CONTROLLED DC-DC CONVERTERS." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2453.

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The design optimization of DC-DC converters requires the optimum selection of several parameters to achieve improved efficiency and performance. Some of these parameters are load dependent, line dependent, components dependent, and/or temperature dependent. Designing such parameters for a specific load, input and output, components, and temperature may improve single design point efficiency but will not result in maximum efficiency at different conditions, and will not guarantee improvement at that design point because of the components, temperature, and operating point variations. The ability
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13

Li, Nan. "Digital control strategies for DC/DC SEPIC converters towards integration." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00760064.

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The use of SMPS (Switched mode power supply) in embedded systems is continuously increasing. The technological requirements of these systems include simultaneously a very good voltage regulation and a strong compactness of components. SEPIC ( Single-Ended Primary Inductor Converter) is a DC/DC switching converter which possesses several advantages with regard to the other classical converters. Due to the difficulty in control of its 4th-order and non linear property, it is still not well-exploited. The objective of this work is the development of successful strategies of control for a SEPIC co
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14

Daho, Ibrahim Lameen Mohammed. "Nonlinear Analysis and Control of High Order DC-DC Converters." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512181.

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15

Imrayed, Otman Musa. "Analysis and control of nonlinear characteristics in DC/DC converters." Thesis, University of Newcastle Upon Tyne, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580698.

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Nonlinear behaviour has been observed in DC/DC converters for the last two decades. Generally, it has been reported that under variation of a system parameter the stability of these systems may be lost via two types of bifurcations, namely a fast-scale and a slow-scale bifurcation. The study of converter dynamical behaviour is important to investigate its stability and to design appropriate controllers in order to avoid these undesirable behaviours. Conventionally, converter designers ignore the discontinuities introduced by the switching operation and use a linear model whose variables are th
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16

Deng, Songquan. "CONTROL AND TOPOLOGY IMPROVEMENTS IN HALF-BRIDGE DC-DC CONVERTERS." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2749.

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Efficiency and transient response are two key requirements for DC-DC converters. Topology and control are two key topics in this dissertation. A variety of techniques for DC-DC converter performance improvement are presented in this work. Focusing on the efficiency issue, a variety of clamping techniques including both active and passive methods are presented after the ringing issues in DC-DC converters are investigated. By presenting the clamping techniques, a big variety of energy management concepts are introduced. The active bridge-capacitor tank clamping and FET-diode-capacitor tank clamp
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17

Li, Hong. "Reducing electromagnetic interference in DC-DC converters with chaos control." Düsseldorf VDI-Verl, 2009. http://d-nb.info/998470414/04.

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18

Prabhala, Venkata Anand Kishore. "Control and applications of double input DC-DC power electronic converters." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2010. http://scholarsmine.mst.edu/thesis/pdf/Prabhala_09007dcc807bbcfe.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2010.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed June 29, 2010) Includes bibliographical references (p. 95-100).
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19

Martínez, Treviño Blanca Areli. "Nonlinear control of dc-dc switching converters with constant power load." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668120.

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Aquesta tesi descriu de manera analítica la connexió en cascada de convertidors amb les condicions de subministrament de la potència constant i proposa estratègies simples de control que poden fer front a la inestabilitat causada per la càrrega de potència constant (CPL). Amb aquest objectiu, s'estudia l'ús de diferents estratègies com; el control lineal, el control de manera lliscant (SMC), el control digital de mode (DSMC) i el control PWM no lineal a la regulació d'un convertidor elevador que subministra una CPL. El punt de partida és l'anàlisi dels convertidors elementals que s'ha posat en
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20

Shi, Yigang. "Performance improvement of DC-DC converters using fuzzy logic control (FLC)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0002/MQ42692.pdf.

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21

Wen, Yangyang. "MODELING AND DIGITAL CONTROL OF HIGH FREQUENCY DC-DC POWER CONVERTERS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3671.

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The power requirements for leading edge digital integrated circuits have become increasingly demanding. Power converter systems must be faster, more flexible, more precisely controllable and easily monitored. Meanwhile, in addition to control process, the new functions such as power sequencing, communication with other systems, voltage dynamic programming,load line specifications, phase current balance, protection, power status monitoring and system diagnosis are going into today's power supply systems. Digital controllers, compared withanalog controllers, are in a favorable position to provid
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22

Wu, Haimeng. "Stability analysis and control of DC-DC converters using nonlinear methodologies." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3488.

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Switched mode DC-DC converters exhibit a variety of complex behaviours in power electronics systems, such as sudden changes in operating region, bifurcation and chaotic operation. These unexpected random-like behaviours lead the converter to function outside of the normal periodic operation, increasing the potential to generate electromagnetic interference degrading conversion efficiency and in the worst-case scenario a loss of control leading to catastrophic failure. The rapidly growing market for switched mode power DC-DC converters demands more functionality at lower cost. In order to achie
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23

Sun, Juanjuan. "Dynamic Performance Analyses of Current Sharing Control for DC/DC Converters." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/28071.

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Paralleling operation of DC/DC converters is widely used in today's distributed power systems. To ensure balanced output currents among paralleled power modules, current sharing control is usually necessary.Active current sharing controls with current feedback mechanism are widely used in today's power supplies. However, the dynamic performance of these current sharing control schemes are not yet clearly explored. In this work, the dynamic current sharing performance is evaluated for paralleling systems with the output impedance approach. As the representative of the terminal characteristic of
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24

Liu, Yingying. "Multifrequency Averaging of Hysteresis-Current-Controlled DC-DC Converters." UKnowledge, 2015. http://uknowledge.uky.edu/ece_etds/67.

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Multifrequency averaging is one of the widely used modeling and simulation techniques today for the analysis and design of power electronic systems. This technique is capable of providing the average behavior as well as the ripple behavior of power electronic systems. Hysteresis current control has fast response and internal current stability through controlling switches to maintain the current within a given hysteresis band of a given current command. However the state space variables in a hysteresis controlled system cannot be directly approached by multifrequency averaging method because of
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25

Olm, i. Miras Josep M. "Asymptotic Tracking with DC-to-DC Bilinear Power Converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2004. http://hdl.handle.net/10803/5940.

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Avui en dia la conversió DC-AC té una important aplicació pràctica en el camp dels sistemes de potència ininterrompuda (SPI). Els convertidors commutats bàsics (el buck, lineal, i el boost i el buck-boost, no lineals) presenten una estructura molt simple, i al llarg dels últims quinze anys s'ha estudiat la possibilitat d'usar-los en esquemes de conversió DC-AC. <br/><br/>L'objectiu de la tesi és aconseguir que els convertidors DC-DC de potència bàsics puguin seguir referències alternes mitjançant el voltatge de sortida. També es desenvolupen esquemes robustos per tal d'eliminar l'efecte de pos
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26

Tomescu, Bogdan. "On the use of fuzzy logic to control paralleled DC-DC converters." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/29366.

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The objective of the thesis is to introduce a new fuzzy logic control application, develop the associated mathematical theory and prove the concept and its advantages through comparative simulation with existing, classical, methods. A stable fuzzy logic controller for the master-slave current sharing loop of a paralleled DC-DC system is presented that exhibits a considerably improved large signal performance over the presently employed, small signal designed compensators, both in terms of system response and control effort. Because of high system complexity, the present small signal designs
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27

Mai, Yuan Yen. "Current-mode DC-DC buck converter with current-voltage feedforward control /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20MAI.

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28

Duan, Xiaoming. "High Performance Integrated Controller with Variable Frequency Control for Switching DC-DC Converters." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-09242006-211828/.

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Development of digital core chips poses serious challenges to the power supply design. High performance switching DC-DC converter must meet requirements of high current, low voltage tolerance, fast transient response, high power efficiency, small profile and low cost. The conventional PWM control with constant switching frequency has limitation to improve both transient response and power efficiency because there is a conflicting requirement on switching frequency. The control scheme with variable frequency has promising features to achieve better overall performance, but the issues in the rep
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29

Mao, Hong. "Topology and control investigation for low-voltage high-current isolated DC-DC converters." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/4405.

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University of Central Florida College of Engineering Thesis<br>High conversion efficiency and fast transient response at high switching frequency are the two main challenges for low-voltage high-current DC-DC converters, which are the motivations of the dissertation work. To reduce the switching power loss, soft switching is a desirable technique to keep power loss under control at high switching frequencies. A Duty-Cycle-Shift (DCS) concept is proposed for half-bridge DC-DC converters to reduce switching loss. The concept of this new control scheme is shifting one of the two symmetric PWM dri
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Saini, Dalvir K. "True-Average Current-Mode Control of DC-DC Power Converters: Analysis, Design, andCharacterization." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1531776568809249.

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31

Deng, Na. "DC-DC converters for current flow control, voltage conversion and integration of energy storage systems in DC grids." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/6326/.

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The advantages of DC transmission over the traditional AC transmission, particularly under medium and high voltage level, are widely recognised in recent years. In order to utilise DC power transmission in a more efficient manner, a construction of multi-terminal DC grids is put forward in previous literature. However, the development of large-scale DC grids faces various technical challenges, such as the power flow management, the voltage conversion and regulation, and the fault current management. One substantial and promising solution against these technical challenges whilst enhancing the
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32

Maganga, Othman G. "Advanced control and optimisation of DC-DC converters with application to low carbon technologies." Thesis, Coventry University, 2015. http://curve.coventry.ac.uk/open/items/9322487d-7dd3-4d42-ab10-e916c23936c1/1.

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Prompted by a desire to minimise losses between power sources and loads, the aim of this Thesis is to develop novel maximum power point tracking (MPPT) algorithms to allow for efficient power conversion within low carbon technologies. Such technologies include: thermoelectric generators (TEG), photovoltaic (PV) systems, fuel cells (FC) systems, wind turbines etc. MPPT can be efficiently achieved using extremum seeking control (ESC) also known as perturbation based extremum seeking control. The basic idea of an ESC is to search for an extrema in a closed loop fashion requiring only a minimum of
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33

Forbes, Daniel. "Efficiency Performance Improvement Using Parallel DC-DC Converters with a Digital Controller." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/736.

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A system to improve efficiency performance of a DC-DC converter is simulated and built. The proposed system combines multiple DC-DC converters in parallel and implements a digital control scheme and load-share controller. A model of the system is developed in MATLAB Simulink and the model demonstrates the improved converter’s efficiency particularly at low load conditions. This simulation is then designed into a hardware system running three DC-DC converters in parallel, controlled by a microcontroller and a load-share controller. The hardware also confirms the simulation results, although som
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Arango, Zuluaga Eliana Isabel. "Modelling And Control Of Asymmetric Interleaved Switching Converters." Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/8468.

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La generación de nuevas estructuras convertidoras y su modelado matemático son las dos temáticas principales estudiadas en esta tesis. El seguimiento de una metodología que modifica la estructura del circuito, realizando una ruptura de la simetría con base en los resultados de simulación, permitió generar la familia de convertidores en "interleaving" asimétrico compuesta por el AIDB, el AIDBB y el grupo-AIDF. En el apartado de modelado se ha desarrollado una nueva aproximación conceptual inspirada en las ideas de trabajos previos que se estudian en el estado del arte. El nombre dado a esta nue
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Mazumder, Sudip K. "Nonlinear Analysis and Control of Standalone, Parallel DC-DC, and Parallel Multi-Phase PWM Converters." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/28690.

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Applications of distributed-power systems are on the rise. They are already used in telecommunication power supplies, aircraft and shipboard power-distribution systems, motor drives, plasma applications, and they are being considered for numerous other applications. The successful operation of these multi-converter systems relies heavily on a stable design. Conventional analyses of power converters are based on averaged models, which ignore the fast-scale instability and analyze the stability on a reduced-order manifold. As such, validity of the averaged models varies with the switching freque
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Khan, Qadeer Ahmad. "Digitally assisted control techniques for high performance switching DC-DC converters." Thesis, 2012. http://hdl.handle.net/1957/30174.

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Digitally controlled switching DC-DC converters have recently emerged as an attractive alternative to conventional switching converters based on analog control techniques. This research focuses on eliminating the issues associated with the state of the art switching converters by proposing three novel control techniques: (1) a digitally controlled Buck-Boost converter uses a fully synthesized constant ON/OFF time-based fractional-N controller to regulate the output over a 3.3V-to-5.5V input voltage range and provides seamless transition from buck to buck-boost modes (2) a hysteretic buck conve
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Lu, Ming-Xiang, and 盧銘祥. "Sub-1V DC-DC Buck Converters using PWM and Hysteresis-V2 Control Techniques." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/juje87.

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碩士<br>國立臺北科技大學<br>電腦與通訊研究所<br>98<br>The first part of this thesis is the DC-DC buck converter using pulse width modulation (PWM) control techniques. The buck converter uses operator amplifier with all digital components. The buck converter includes a closed-loop digital controlled regulator to have some advantages of low sensitivity to noise, low sensitivity to temperature, low sensitivity to process variations, and low power consumption. The buck converter improves the efficiency and extends battery life. The advantage of control circuit, which only uses eight inverters, is simple. The buck c
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Hsieh, Chang-Che, and 謝昌哲. "Adaptive Fast Charging Control Technique for Current Mode DC-DC Buck Converters." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/65003987517210219617.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>103<br>The switching regulators have been widely used in power supply systems and are becoming a common building block in modern VLSI systems, especially for the growing number of battery-operated portable devices. With the evolution of the process, the supply voltage and the signal level decrease. Therefore, fast load transient response to keep output voltage stable and clean becomes very critical for voltage regulators nowadays. The output current slew rate of the switching converter is restricted by the inductor in conventional architecture. In this thesis,
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莊詠竣. "The Soft-Start Technique with Nonlinear Control Loop for Integrated DC-DC Converters." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/99062145634566691069.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>96<br>The electronic devices, such as TFT-LCD panel and digital camera, are great prevalent for customer market in the recent year. In order to provide the regulated supply voltage and extend the battery life, the power management system is utilized. The soft-start technique is an important feature for power management system especially for the power-on sequence of dc-dc converters. It not only diminishes the inrush current to protect the converter from occurring damage but also ensure the converter to start up successfully. The conventional soft-start technique us
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Lai, You-Min, and 賴佑旻. "A Hysteresis Prediction Voltage Control Technique for Fast Transient Response in DC-DC Converters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/74063609290173601738.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>101<br>This paper presents a hysteresis prediction voltage control (HPVC) method using the predictive strategy with early operations to reduce the transient ripple and minimizes the transient time in dc-dc converter. This HPVC control is composed of on-chip compensated two-stage EA PWM for steady-state PWM control. During transient, the buck converter switches to the HPVC mode to speed up the transient response. This technique is implemented in a standard 0.35-μm 2P4M 3.3V/5V Mixed Signal CMOS process. The analysis and simulation show that without using the HPVC tec
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Hsieh, Hui-Rong, and 謝慧蓉. "Design and Imolementation of Switching Buck DC-DC Converters by Variable Structure Control Technique." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/64370557025497006697.

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碩士<br>國立成功大學<br>工程科學研究所<br>85<br>In this thesis, dc and small-signal model of the switching buck DC-DC converter for the continuous condition mode (CCM) are derived. The switching buck converter is a particular class of variable structure system due to the switching components used in the circuits. Thus, variable structure control technique is even developed for this class of systems. 　　Variable structure control (VSC) technique is used to derive from the controllability canonical form of the controlled system. The control law that directly generate the derive pulses for the semiconductors
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Lee, Yu-Huei, and 李昱輝. "Fast Transient Technique and Adaptive Phase Margin Control for Current Mode DC-DC Buck Converters." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/64591111535900245083.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>97<br>This paper proposes a fast transient (FT) control with adaptive phase margin (APM) to achieve good transient response of current-mode DC-DC buck converters at any load condition. Thus, the overshoot/undershoot voltage and the transient recovery time are effectively reduced. Owing to the load-dependent output pole of the current-mode buck converters, the operation of a load-dependent compensation pole-zero pair is designed to be moved to a higher frequency at transient period and back to an optimum position for pole-zero cancellation in steady state. Therefore
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Chen, Bo-Yuan, and 陳柏元. "Design and Implementation of PWM Control Techniques for the Full-Bridge DC/DC Converter." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/2s4z9c.

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博士<br>國立臺北科技大學<br>電機工程系博士班<br>101<br>The main theme of this dissertation is to develop PWM control techniques for full-bridge DC/DC converter. A new switching control technique that can improve light load and standby power losses of phase-shift controlled full-bridge DC/DC converter is proposed. Furthermore, a new random PWM control technique is proposed to reduce the harmonics intensity while considering the efficiency. First, the continuous time-domain model of full-bridge DC/DC converter is established by state space average method. Based on the converter model, the digital controller is de
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44

Chang, Chih-Lei, and 張芷蕾. "Analysis of Control Loop Frequency Response for Different Compensation Techniques in Buck DC-DC Converter." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/j2uu5c.

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碩士<br>國立交通大學<br>電機學院電機與控制學程<br>105<br>This thesis contains control theory, mathematical models and the circuit of implementation to achieve high efficiency control loop compensation for DC-DC buck converter. Currently, there are two models for application of DC-DC buck converter that one is voltage control mode and the other one is current control mode. The affection of the inductive effect from the power stage of DC-DC buck converter is different for voltage mode and current mode. Therefore, the design of compensation circuit of control loop got change for them. However, how to design compens
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45

Huang, Han-Hsiang, and 黃漢翔. "Adaptive Window Control (AWC) Technique for Hysteresis DC-DC Buck converters with Improved Light and Heavy Load Performance." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/19575082917431725395.

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碩士<br>國立交通大學<br>電機學院碩士在職專班電機與控制組<br>97<br>This paper presents a new adaptive window control (AWC) technique to adjust the hysteresis window to reduce the output ripple at heavy loads and keep the switching frequency higher than the acoustic frequency at light loads. Therefore, the driving capability and the power conversion efficiency of the hysteresis converter are improved at heavy loads. Besides, a new class-AB current sensing circuit is also proposed to provide fast and accurate current sensing signal for achieving fast hysteresis window adjustment. Experimental results show that the propo
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Chen, Yi-Chun, and 陳逸群. "Current-Mode Synthetic Control (CSC) Technique for High Efficiency DC-DC Boost Converters Over a Wide Load Range." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/22031249244365470105.

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碩士<br>國立交通大學<br>電控工程研究所<br>99<br>Portable electronics products such as cellular phones, laptops and diverse multimedia equipments use battery as the main power source. To extend battery life, portable devices stay in sleep mode with a very low static current but require a fast wake-up to reach the normal mode with a much higher operational current. Therefore, the suitable converter for the portable devices needs fast transient response from the standby mode to the normal mode, meanwhile, high efficiency is guaranteed over a wide range. Recently, the synthetic-ripple modulator (SRM) is proposed
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47

Yang, Hong-Yuan, and 楊鴻源. "Adaptive Capacitor Compensation Control Technique of Hysteretic Current Mode under Continuous Conduction Mode for DC-DC Boost Converters." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/55708484291766282732.

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碩士<br>國立交通大學<br>電機學院碩士在職專班電機與控制組<br>98<br>This paper proposes a modulated hysteretic current control (MHCC) technique to improve transient response of DC-DC boost converters, which suffer from low bandwidth due to the existence of right-half-plane (RHP) zero. The MHCC technique can automatically adjust the on-time value to rapidly increase the inductor current to shorten the transient response time. Besides, based on the characteristic of right-half-plane (RHP) zero, the compensation pole and zero are deliberately adjusted to achieve the system has an ultra-fast transient response in case of l
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48

Συρίγος, Στυλιανός. "Μελέτη και κατασκευή εργαστηριακής διάταξης φόρτισης του ηλεκτρικού κινητήρα ενός ηλεκτροκίνητου οχήματος". Thesis, 2012. http://hdl.handle.net/10889/5817.

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Η παρούσα διπλωματική εργασία πραγματεύεται το σχεδιασμό και την κατασκευή διάταξης φόρτισης του κινητήρα ενός ηλεκτροκίνητου οχήματος. Η εργασία αυτή εκπονήθηκε στο Εργαστήριο Ηλεκτρομηχανικής Μετατροπής Ενέργειας του Τμήματος Ηλεκτρολόγων Μηχανικών και Τεχνολογίας Υπολογιστών της Πολυτεχνικής Σχολής του Πανεπιστημίου Πατρών. Κύριος σκοπός της διπλωματικής εργασίας είναι η κατασκευή ενός αμφίδρομου ηλεκτρονικού μετατροπέα ισχύος, που θα ελέγχει μια μηχανή συνεχούς ρεύματος ξένης διέγερσης, η οποία συνδέεται μέσω ενός συστήματος μετάδοσης με τον κινητήρα ενός ηλεκτροκίνητου οχήματος. Απώτερος
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49

Lee, Jia-Jyun, and 李家鈞. "On-Chip Compensation Techniques for DC-DC Buck Converters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/34622714986258029243.

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碩士<br>國立交通大學<br>電機學院電機與控制學程<br>102<br>This work is discussing the comprehensive concepts of on-chip compensation (OCC) techniques for DC-DC buck converters with voltage mode control and current mode control. In general, the compensator network of DC-DC buck converter needs the external components for the large value capacitors to place the zeros in desired location to stabilize the system. Thus, the compensation of the regular DC-DC converter is completed by an off-chip compensator. Regarding DC-DC buck converter with voltage mode control, Type III compensator is usually employed to extend
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Jiang, Jia-Sen, and 江佳憲. "EMI Estimation and Control of DC/DC Converters." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/15182013951025623148.

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