Дисертації з теми "High Voltage Power Supply (HVPS)"
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Beikoff, Geoffrey Noel. "A high power, high voltage switching power supply." Thesis, Queensland University of Technology, 1992. https://eprints.qut.edu.au/36226/1/36226_Beikoff_1992.pdf.
Повний текст джерелаZabihi, Sasan. "Flexible high voltage pulsed power supply for plasma applications." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48137/1/Sasan_Zabihi_Sheykhrajeh_Thesis.pdf.
Повний текст джерелаWeiser, Nicholas. "Dual High-Voltage Power Supply for use On Board a CubeSat." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1204.
Повний текст джерелаJacobs, D. M. (Danver Maxwill). "Voltage control of medium to high power three-phase inverter supply systems." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52608.
Повний текст джерелаENGLISH ABSTRACT: In this thesis a new voltage control method is developed for a three-phase inverter supply system. The inverter supply system consist of a Permanent Magnet Generator, a three-phase rectifier, a three-phase inverter plus LC-filter and a three-phase transformer in series. This system supplies power to a network or to a stand-alone load. The main focus of this thesis is on the control aspects of the inverter and the LC-filter. Different voltage control systems are investigated and compared to each other. From these methods the proposed voltage control method is developed where only the output voltages are measured to establish good voltage control. All these voltage control methods are also simulated with a software package. The proposed voltage control method compares very well with other voltage control methods. The results that are obtained in the simulations are satisfactory. The proposed voltage control method is also implemented in an 8 kW laboratory scale model and, again, very good practical results are obtained. A TMS320F240 nsp controller is used to implement the proposed voltage control method. The controller compensates well for load steps, and these results compare well to an alternative voltage control method, which was also evaluated practically.
AFRIKAANSE OPSOMMING: In hierdie tesis IS 'n nuwe spanningsbeheermetode ontwikkel VIr 'n drie-fase wisselrigter kragtoevoerstelsel. Die wisselrigter kragtoevoerstelsel bestaan uit 'n Permanent Magneet Generator, 'n drie-fase gelykrigter, 'n drie-fase wisselrigter plus Le-filter, en 'n drie-fase transformator in serie. Hierdie stelsel voorsien krag aan 'n netwerk sowel as aan 'n alleenstaande las. Die hooffokus van hierdie tesis is op die beheeraspekte van die wisselrigter en Le-filter. Verskillende spanningsbeheermetodes is deeglik ondersoek en vergelyk met mekaar. Uit hierdie metodes is dan die voorgestelde beheermetode ontwikkel waar slegs die uittreespanning gemeet word om goeie spanningsbeheer te kan doen. Al hierdie spanningsbeheermetodes is dan gesimuleer met 'n sagteware pakket. Die voorgestelde spanningsbeheermetode vergelyk baie goed met die ander spanningsbeheermetodes. Die resultate verky in die simulasies is ook baie bevredigend. Die voorgestelde beheermetode is ook geïmplementeer op 'n 8 kW laboratorium skaalmodel en weereens is baie goeie praktiese resultate verky. 'n TMS320F240 DSP-beheerder is gebruik om die voorgestelde beheermetode mee te implementeer. Die beheerder kompenseer baie goed vir lastrappe en vergelyk ook goed met 'n ander spanningsbeheermetode wat prakties ge-evalueer is.
Myhre, Jørgen Chr. "Electrical Power Supply to Offshore Oil Installations by High Voltage Direct Current Transmission." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-383.
Повний текст джерелаThis study was initiated to investigate if it could be feasible to supply offshore oil installations in the North Sea with electrical power from land. A prestudy of alternative converter topologies indicated that the most promising solution would be to investigate a conventional system with reduced synchronous compensator rating.
The study starts with a summary of the state of power supply to offshore installations today, and a short review of classical HVDC transmission. It goes on to analyse how a passive network without sources influences the inverter. The transmission, with its current controlled rectifier and large inductance, is simulated as a current source. Under these circumstances the analysis shows that the network frequency has to adapt in order to keep the active and reactive power balance until the controllers are able to react. The concept of firing angle for a thyristor is limited in a system with variable frequency, the actual control parameter is the firing delay time.
Sensitivity analysis showed some astonishing consequences. The frequency rises both by an increase in the active and in the reactive load. The voltage falls by an increase in the active load, but rises by an increase in the inductive load.
Two different control principles for the system of inverter, synchronous compensator and load are defined. The first takes the reference for the firing delay time from the fundamental voltage at the point of common coupling. The second takes the reference for the firing delay time from the simulated EMF of the synchronous compensator. Of these, the second is the more stable and should be chosen as the basis for a possible control system.
Two simulation tools are applied. The first is a quasi-phasor model running on Matlab with Simulink. The other is a time domain model in KREAN. The time domain model is primarily used for the verification of the quasi-phasor model, and shows that quasi-phasors is still a valuable tool for making a quick analysis of the main features when the details of the transients are of less importance.
The study indicates that power supply by HVDC transmission from land to offshore oil installations could be technically feasible, even without the large synchronous compensators normally required. It has been shown that in a network only supplied by an inverter, variations of active and reactive loads have significant influence on both voltage and frequency. Particularly it should be noted that the frequency shows a positive sensitivity to increases in load. This could make the system intrinsically unstable in the case of a frequency dependent load such as motors.
It was not a part of the study to optimize controllers, but even with simple controllers it was possible to keep the frequency within limits given by norms and regulations, but the voltages were dynamically outside the limits, though not very far. These voltage overswings take place in the first few instances after a disturbance, so it takes unrealistically fast controllers to handle them. They are partly due to the model, where the land based rectifier and the DC reactors are simulated by a constant current source, but partly they have to be handled by overdimensioning of the system.
The simulations indicate that it should be technically possible to supply an oil platform with electrical power from land by means of HVDC transmission with small synchronous compensators. Whether this is financially feasible has not been investigated. Neither has it been considered whether the necessary equipment can actually be installed on an oil platform.
Recently both ABB and Siemens have presented solutions for HVDC transmission in the lower and medium power range based on voltage source converters based on IGBTs. Fully controllable voltage source HVDC converters have properties that may be better suited than conventional line commutated current source thyristor inverters, to supply weak or passive networks, such as offshore oil installations, with electrical power. But they also have some disadvantages, and a complete technical and financial comparison must be performed in order to decide about any potential project.
Devine, Phillip John. "A controllable, variable waveform, high voltage, switched mode power supply for electrostatic precipitators." Thesis, University of Leicester, 2000. http://hdl.handle.net/2381/30176.
Повний текст джерелаFu, Dianbo. "Improved Resonant Converters with a Novel Control Strategy for High-Voltage Pulsed Power Supplies." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/34432.
Повний текст джерелаMaster of Science
GARCIA, ORDÓÑEZ LUIS GUILLERMO. "High Voltage Power Supply System and Front-End DAQ on FPGA/SoC for High Energy Particle Detectors." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3030919.
Повний текст джерелаHigh energy physics experiments are based on complex detectors built with novel techniques frequently configured in multichannel arrays. This complexity creates the need for custom-made related instrumentation and methods not often found in commercial devices. The research activity presented in this thesis aims at developing a distributed High Voltage Power Supply System (HVPSS) network for hybrid Micro-pattern Gaseous Detectors (MPGD) like the ones used in the RICH-1 detector of the COMPASS experiment at CERN. The hardware design was tested in several conditions including test beams at CERN in the SPS H4 beam line and with nuclear sources in the RD51 laboratory. The modular design as well as the reconfigurable capacity of the SoC-FPGA opened the possibility of using the HVPSS as a tool for other experiments. With few modifications, the system was successfully tested as a front-end Data Acquisition (DAQ) system for Water Cherenkov Detectors (WCD) in the context of indirect measurements of cosmic rays. Additional algorithms were implemented for online particle classification based on pulse-shape discrimination techniques. This thesis describes the basic concepts of the physics behind these detectors, as well as the electronics used for high energy particle detectors. It is followed by the most relevant aspects of the design process for the HVPSS and its modifications leading to the DAQ for WCDs. A description of the specific techniques developed for these applications and the most significant tests and results obtained during the research process are also presented.
Yang, Gang. "Design of a High Efficiency High Power Density DC/DC Converter for Low Voltage Power Supply in Electric and Hybrid Vehicles." Thesis, Supélec, 2014. http://www.theses.fr/2014SUPL0011/document.
Повний текст джерелаIn this dissertation, a 2.5kW 400V/14V, 250kHz DC/DC converter prototype is developed targeted for electric vehicle/hybrid vehicle applications. Benefiting from numerous advantages brought by LLC resonant topology, this converter is able to perform high efficiency, high power density and low EMI. A first part of this dissertation is the theoretical analysis of LLC: topology analysis, electrical parameter calculation and control strategy. To arrange high output current, this thesis proposes parallel connected LLC structure with developed novel double loop control to realize an equal current distribution. The second part concerns on the system amelioration and efficiency improvement of developed LLC. A special transformer is dimensioned to integrate all magnetic components, and various types of power losses are quantified based on different realization modes and winding geometries to improve its efficiency. This converter also implements a robust synchronous rectification system with phase compensation, a power semiconductor module, and an air-cooling system. The power conversion performance of this prototype is presented and the developed prototype has a peak efficiency of 95% and efficiency is higher than 94% from 500W to 2kW, with a power density of 1W/cm3. The CEM analysis of this converter is also developed in this thesis
Yan, Ning. "High-frequency Current-transformer Based Auxiliary Power Supply for SiC-based Medium Voltage Converter Systems." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/101507.
Повний текст джерелаM.S.
Recently, 10 kV silicon carbide (SiC) MOSFET receives strong attention for medium voltage applications. Asit can switch at very high speed, e.g. > 50 V/ns, the converter system can operate at higher switching frequency condition with very small switching losses compared to silicon (Si) IGBT [8]. However, the fast dv/dt noise also creates the common mode current via coupling capacitors distributed inside the converter system, thereby introducing lots of electromagnetic interference (EMI) issues. Such issues typically occur within the gate driver power supplies due to the high dv/dt noises across the input and output of the supply. Therefore, the ultra-small coupling capacitor (<5 pF) of a gate driver power supply is strongly desired.[37] To satisfy the APS demands for high power modular converter system, a solution is proposed in this thesis. This work investigates the design of 1 MHz isolated APS using gallium nitride (GaN) devices with medium voltage insulation reinforcement. By increasing switching frequency, the overall converter size could be reduced dramatically. To achieve a low Ccm value and medium voltage insulation of the system, a current-based transformer with a single turn on the sending side is designed. By adopting LCCL-LC resonant topology, a current source is formed as the output of sending side circuity, so it can drive multiple loads importantly with a maximum of 120 W. At the same time, ZVS can use realized with different load conditions. The receiving side is a regulated stage, so the output voltage can be easily adjusted and it can operate in a load fault condition. Different insulation solutions will be introduced and their effect on Ccm will be discussed. To further reduce Ccm, shielding will be introduced. Overall, this proposed APS can achieve a breakdown voltage of over 20 kV and PDIV up to 16.6 kV with Ccm<5 pF. Besides, multi-load driving ability is able to achieve with a maximum of 120 W. ZVS can be realized. In the end, the experiment results will be provided.
Hu, Boxue. "Challenges and Solutions of Applying Medium-Voltage Silicon Carbide Devices in Medium and High-Voltage Systems." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1565967269661455.
Повний текст джерелаSun, Keyao. "Protection, Control, and Auxiliary Power of Medium-Voltage High-Frequency SiC Devices." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/103743.
Повний текст джерелаDoctor of Philosophy
The wide bandgap semiconductor enables next-generation power electronics systems with higher efficiency and higher power density which will reduce the space, weight, and cost for power supply and conversion systems, especially for renewable energy. However, by pushing the system voltage level higher to medium-voltage of tens of kilovolts, although the system has higher efficiency and simpler control, the reliability drops. This dissertation, therefore, focusing on solving the possible overcurrent, overvoltage, and gate failure issues of the power electronics system that is caused by the high voltage and high electromagnetic interference environment. By utilizing the inductance of the device, a dual-protection method is proposed to prevent the overcurrent problem. The overcurrent fault can be detected within tens of nanoseconds so that the device will not be destroyed because of the huge fault current. When multiple devices are connected in series to hold higher voltage, the voltage sharing between different devices becomes another issue. The proposed modeling and control method for series-connected devices can balance the shared voltage, and make the control system stable so that no overvoltage problem will happen due to the non-evenly distributed voltages. Besides the possible overcurrent and overvoltage problems, losing control of the devices due to the unreliable auxiliary power supply is another issue. This dissertation proposed a scalable auxiliary power network with high efficiency, high immunity to electromagnetic interference, and high reliability. In this network, a wireless power transfer converter is designed to provide enough insulation and isolation capability, while a switched capacitor converter is designed to transfer voltage from several kilovolts to tens of volts. With the proposed overcurrent protection method, voltage sharing control, and reliable auxiliary power network, systems utilizing medium-voltage wide-bandgap semiconductor will have higher reliability to be implemented for different applications.
Seimbille, Denis. "Design of power supply system in DC electrified transit railways - Influence of the high voltage network." Thesis, KTH, Elektrisk energiomvandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153924.
Повний текст джерелаPublika sparburna transportsystem sasom tunnelbanor och lokalbanor transporterar miljontals manniskor varje dag. De esta korta linjer matas med likstrom. Utformningen av stromforsorjningen till dessa system ar avgorande for ett val fungerande , och forutsatter anvandningen av olika matematiska modeller. Detta natverk bestar av ett vaxelstroms hogspanningsnat som omformas till likstrom i era banmatningsstationer langs banan. Dessa matematiska modeller ignorerar dock ofta hogspanningsdelen i modelleringen, varfor resultatet ibland kan bli missvisande. I detta arbete har en belastningsfordelningsalgoritm baserad pa Newton-Raphsons metod implementerats for att skapa en battre modellering av hsgspanningsdelen i den bentliga programvaran Symphonie. Tre olika hogspanningsstrukturer har bearbetats och resultatet visar att spanningsfall och belastningsf ordelning varierar mellan de olika strukturerna. Speciellt nar era transformatorstationer ar kopplade till samma hogspanningssystem, kan spanningsfall vara patagligt for vissa transformatorstationer. Sammanfattningsvis maste utformningen av hogspanningsystemet till likstromsforsorjda jarnvagar utformas med hjalp av anpassade matematiska modeller som tar hansyn till placering av transformatorstationer liksom hogspanningsnatets kapacitet.
López, Julià Toni. "Prospects of voltage regulators for next generation computer microprocessors." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/77908.
Повний текст джерелаPatel, Prashun R. "An improved method of regulating a high voltage power supply for use in oil well logging applications." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/34072.
Повний текст джерелаGhasemi, Negareh. "Improving ultrasound excitation systems using a flexible power supply with adjustable voltage and frequency to drive piezoelectric transducers." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/61091/1/Negareh_Ghasemi_Thesis.pdf.
Повний текст джерелаBoora, Arash Abbasalizadeh. "Flexible high-power multi DC-DC converters for train systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/33208/1/Arash_Boora_Thesis.pdf.
Повний текст джерелаЦиганчук, Т. Г., та А. В. Булашенко. "Усунення генерації в іоністорних джерелах живлення". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67630.
Повний текст джерелаGábel, Marián. "Spínaný stejnosměrný laboratorní zdroj 30V 60A." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442786.
Повний текст джерелаGutierrez, Saenz Juan. "Energy analysis and cost estimation of a potential On-shore Power Supply system in the Port of Gävle." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30378.
Повний текст джерелаTejmlová, Lenka. "Laboratorní zdroj s vysokou účinností." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219100.
Повний текст джерелаZemánek, Miroslav. "Užití výkonových měničů ve zdrojích vysokého napětí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233463.
Повний текст джерелаPocius, Lukas. "Aukštosios įtampos programuojamo šaltinio sukūrimas ir jo parametrų tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110615_175842-20769.
Повний текст джерелаIn this final project we made research of high voltage programmable power supply. In the preface of this project the high voltage power supplies, there application and using areas are described. Also in this part of the work we describe GPIB interface advantages and disadvantages. In the analytic part we analyze power supply structure and working principles in detail. We give some power supplies structure elements schemes. Also in this part of work we analyze GPIB interface working principle and applying possibilities in detail. In the design part of the work we made a research of high voltage power supply, its characteristics and we give outgoing signal form in pictures. Also in this part we design GPIB interface for high voltage power supply and algorithm of software. Structure: introduction, analytical part, design part, conclusions and suggestions, references.
Ptáček, Karel. "Vysokonapěťové struktury pro galvanickou iziolaci v integrovaných obvodech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-417477.
Повний текст джерелаSaint-Laurent, Martin. "Modeling and Analysis of High-Frequency Microprocessor Clocking Networks." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7271.
Повний текст джерелаGhossein, Layal. "Alimentation de circuit de commande rapprochée « Gate-drive » pour nouveaux convertisseurs de puissance haute tension." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI016.
Повний текст джерелаHVDC power transmission is the future of the electrical energy transmission network. The power converters (e.g. MMC) used in this network will be able to cope with voltages of hundreds of kV, making the power supply of the gate-drive devices in these converters challenging. It is then necessary to design solutions that guarantee the power supply of these gate-drives, while providing high voltage isolation. To do this, a circuit, based on the flyback principle, was developed. It is placed in parallel with a capacitor typically connected to a half-bridge circuit. It has an auto-start feature. This allows to supply the gate-drive as soon as a low voltage is applied to the input of the self-supply system. This is obtained by taking advantage of the normally-ON character of the JFET. In our prototype, the input voltage is 2 kV. High voltage JFETs of 2 kV and higher breakdown voltages are not yet available on the market. So, to achieve this high voltage capacity, a series of Normally-ON SiC JFETs controlled by a low voltage Si MOSFET (Super-cascode circuit) is used in the circuit. The developed circuit is able to supply 20 W at different floating potentials with output voltage regulated at 24 V and an efficiency close to 60%. The isolation problem is then solved using this solution
Uherek, Jaromír. "Návrh vysokonapěťového zdroje sinusového napětí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220114.
Повний текст джерелаŠpaněl, Petr. "Spínané zdroje." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433024.
Повний текст джерелаLAVIOLA, MICHELE. "LNG as the future marine fuel, Waste Heat Recovery Systems & Cold Ironing solutions for eco-friendly maritime transport." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/930196.
Повний текст джерелаJoshi, T. G. Subhash. "Power Electronic Technologies for Medium and High Power High Voltage Power Supplies." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4322.
Повний текст джерелаHung-WenChen and 陳鴻文. "Analysis and Implementation of High Voltage Power Supply." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/83599253900072512509.
Повний текст джерелаLi, Ren-Hao, and 李仁豪. "Modular Design of Adjustable High Voltage Pulsed Power Supply." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8u46ys.
Повний текст джерела國立臺灣科技大學
電機工程系
107
This thesis aims to achieve a modular design of an adjustable high voltage pulsed power supply. The proposed system includes a DC/DC converter and a circuit for controlling output pulse width. The DC/DC converter is structured by full-bridge LLC resonant circuit as a basic power module and combines through input parallel output series (IPOS) form to increase the output voltage and output power. Moreover, the digital controller is incorporated with a human-machine interface, where the different output specifications can be obtained according to the preset parameter values. In addition, in order to stabilize output voltage, the frequency modulation technique is used to reach the required level, and the duty cycle control is employed to balance the output voltage between power modules. Furthermore, the burst mode is added into the pulse width control strategy for eliminating voltage spike and resonant current spike. Finally, both the computer simulation and experimental results are used to verify the feasibility and validity of the proposed system.
Ke, Chih Wei, and 柯智偉. "Development of a High-Frequency High-Voltage Pulse Power Supply System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/03556125194806504443.
Повний текст джерела南台科技大學
電機工程系
97
This thesis discusses control methods of high-frequency high-voltage pulse power supply system. It can be applied to the dielectric barrier discharging, corona discharging, and so on. The proposed structure’s first stage is active power factor corrector, It is provides steady DC voltage by boost AC-DC conveter to second stage’s full-bridge ZVS converter to get the desired voltage. The second stage is controlled by pulse width modulation and pulse density modulation, As the pulse width modulation can’t control the system in low power, range a pulse density modulation control is propose to improve. This thesis used the Microchip controller to achieve the pulse density modulation control, thus the high-frequency high-voltage pulse power supply system can have both the pulse width modulation control and pulse density modulation control functions.
Kuo-YiHsiao and 蕭國毅. "Design and Implementation of a High-Voltage Power Supply with Power Factor Correction." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/36246230702646579554.
Повний текст джерелаK, Aroul. "Development of efficient power supply For low voltage high current Applications." Thesis, 2009. http://ethesis.nitrkl.ac.in/2760/1/mtech_research_Thesis.pdf.
Повний текст джерелаZeng, You-Wei, and 曾宥瑋. "Study and Implementation of a High-Voltage DC Power Supply for Wide-Range Output Voltage." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/51874345130158260233.
Повний текст джерела國立臺灣科技大學
電子工程系
103
This thesis mainly develops a high-voltage DC power supply with a wide-range of adjustable output voltage. It focuses on the design and control of a full-bridge phase-shifted series resonant converter. The proposed full-bridge phase-shift series resonant converter features a novel two-mode operation. When low voltage output, it operates in phase-shifted PWM mode. When high voltage output, it operates in series resonant mode. In both modes, the zero voltage switching can be achieved during dead times. Therefore, the proposed converter can realize the target of high conversion efficiency for all voltage conditions. The power-stage is a full-bridge phase-shifted series resonant converter, which has the characteristics of zero voltage switching. Since the output apply in high-pressure situations, so the secondary side choose a full bridge rectifier circuit to reduce the voltage stress. In order to implement the digital controller, the DSP chip TMS320F28035 developed by Texas Instruments is adopted. Finally, a 450W adjustable power supply with 400V input voltage and an output voltage ranging from 400V to 3000V is designed and implemented. Experimental results of the prototype converter are shown and discussed to verify the feasibility of the studied scheme.
Chia-LunLiu and 劉加侖. "Study and Implementation of High Voltage Power Supply for X-ray Generator." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/31444008637560923764.
Повний текст джерела國立成功大學
電機工程學系碩博士班
98
In this thesis, a high voltage power supply for X-ray generator is studied and implemented. X-ray power supply is composed of high voltage power supply and filament circuit. The high voltage power supply consists of a full-bridge converter, a series resonant tank, a high step-up transformer and a voltage multiplier, which utilizes phase-shift control scheme to control the power supply for achieving high voltage output. The filament circuit employs push-pull topology to generate preheated power. When the filament is preheated and the high voltage output terminal is crossed on X-ray’s anode and cathode, the X-ray tubes is derived. Finally, a laboratory full-bridge prototype of 50-100 kV with adjustable voltage output and a push-pull circuit for the filament circuit of output voltage 3-5 V has been implemented to verify the theoretical analysis. Keywords:X-ray generator, full-bridge phase-shifted, voltage multiplier, filament preheater, high-voltage power supply
Hsu, Ming Shyang, and 許明祥. "Implementation of High Voltage Power Supply Applied to the Traveling Wave Tube." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/94452542343522285244.
Повний текст джерела輔仁大學
電子工程學系
92
A high voltage power supply applied to the traveling wave tube (TWT) is proposed in this paper. A Buck current-fed full bridge converter is used to reduce the effect of leakage inductances of high voltage transformer for improving the performance. The switching frequency of the converter is chosen at 100 kHz to reduce the size and weight of power supply. The transformer windings utilize 19 kV insulation wire. The high voltage output rectifier and double voltage multiplier provided the need for multiple high voltage outputs for cathode, collector-1, collector-2 of the TWT, respectively. This paper mentioned the simply scheme to develop and design the high voltage power supply. Finally, computer simulation and experimental results of laboratory prototype with 100 kHz、10 kV and 1 kW output are presented to demonstrate the feasibility of circuit topology.
Chen, Cun-Min, and 陳存旻. "An Adjustable Pulse-width High Voltage Pulsed Power Supply with Digital Controller." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pw3u87.
Повний текст джерела國立臺灣科技大學
電機工程系
106
This thesis presents an adjustable pulse-width high voltage pulsed power supply based on the full-bridge LLC resonant topology with a digital controller. First, the system transfer function including parastic capacitance effect is derived to select the resonant component. Moreover, the proposed system can achieve zero voltage switching to reduce power loss even under pulsed output. In addition, the modified burst PWM control is combined with variable frequency control to eliminate the output voltage spike. Furthermore, the voltage feedback control is implemented by using the auxiliary winding to simplify the circuit design and to provide electrical isolation. Finally, both the computer simulation and experimental results are used to verify the feasibility and validity of the proposed system.
Chang, De-Wei, and 張德威. "Study and Implementation of a DC Power Supply for High-Voltage Capacitor Testing." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/85397133952837459143.
Повний текст джерела國立臺灣科技大學
電子工程系
104
This thesis mainly develops a high-voltage DC power supply with wide-range output voltage for high voltage capacitor test. The power stage consists of a buck DC-DC converter and a full-bridge SRC DC-DC converter. The pre-stage buck converter is operated to achieve the proposed voltage adjustment and provide the input voltage for post-stage converter. The post-stage circuit is a full-bridge phase-shifted series resonant converter, which provides 1kW rated power and a wide-range output voltage from 40V to 6kV. A DSP chip TMS320F28035 developed by Texas Instruments is adopted for realizing digital controller. In this thesis, the operation principles and design considerations for a prototype system were analyzed and discussed. Experimental results of the prototype converter are shown to verify the feasibility of the studied scheme.
Yang, Min-Nan, and 楊敏男. "Effects and Improvements of Voltage Sags on High-Tech Industry Power Supply System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/28410460109047005899.
Повний текст джерела國立彰化師範大學
電機工程學系
99
Due to rapid development in the Central Taiwan Science Park (CTSP) of Taiwan, the requirements of electricity consumption grow fast year by year. The high-tech industry has the characteristics of highly sensitive production equipment and intensive production, and thus has great requirements of stable power supply and good power quality. This study is of a high-tech factory in the CTSP as an example, by building power quality monitoring systems, and thus based on the SEMI F47 standard to analyze the reasons and categories of the voltage sags. The results can be as a reference for installing voltage sag improvement equipment and new high-tech factory and power system planning. Further, installing the voltage sag compensation equipment to improve the loss due to voltage sag is illustrated. In addition, the analysis and comparison of the voltage sag events before and after the establishment of the EHV substation (E/S) in the CTSP show the benefits of the E/S on reducing the voltage sag occurrences and the losses of the production.
Chu, Hsin-Yu, and 朱星諭. "A STUDY OF OUTPUT ADJUSTABLE SWITCHING-MODE HIGH POWER DC POWER SUPPLY WITH HIGH EFFICIENCY AND LOW VOLTAGE REGULATION." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/57531397563916727568.
Повний текст джерела大同大學
電機工程研究所
89
The purpose of this thesis is to develop a high output power, adjustable switching-mode DC power supply with high efficiency, low ripple factor, and low voltage regulation. The system consists of a 3φ AC controller, a 3φisolating transformer, and DC output active compensating filters. The 3φ switching-mode AC controller with PWM control takes charge of the variable output voltage. A 3φ transformer used for isolating the load and source, and filtering out high frequency harmonics by its inductance effect. The DC output active compensating filter takes charges of compensating and reducing the low frequency ripple voltage that is hard filtered by classical passive LC filter. Finally a single-chip microprocessor 80196MC, with proper software is used to implement the control scheme of the system and accomplish the expectation of the low voltage regulation. In the thesis, the designs of hardware structure and software algorithm are established, the proposed switching-mode DC power supply may operate at 15KW and 0V∼130V adjustable output voltage, the efficiency is greater than 90%, voltage regulation and ripple factor are both less than 1.0%.
Chuang, Ching-Fang, and 莊景芳. "Application of High Voltage and High Frequency Power Supply for the Traveling Wave Tube Circuit System." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/82473277714267789922.
Повний текст джерела輔仁大學
電子工程學系
89
ABSTRACT The traveling wave tube is a device that can change the RF signal strength and frequency modification by input control signal. It is widely used in the list of electric application strategies as below: Doppler radar system, electronic counter-measurement system, guide missile system, the satellite communication system, television translating system, the low noise amplifier receiver, high band radar system, the wave source of dot matrix in phase, …and so on. The merit is it only needs the stable input power equipment with the guarantee to work fine. Again, because of the different operating frequency and output power in different working place, the current solutions can’t meet its need. The contribution of this thesis is the buck current-fed full bridge power converter because the better adapting. It is in designing and manufacture of the topology. It is approved by the quality and reliability.
Liu, Wei-Chang, and 劉偉章. "The Design of Very-Low-Voltage Operational Amplifier with High Power Supply Rejection Ratio." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/01331873055627426172.
Повний текст джерела國立雲林科技大學
電子與資訊工程研究所碩士班
92
The operational amplifier is the basic and important block in analog circuit. In recent years the supply voltage is scaled down in modern process, it will be a challenge to design the operational amplifier in such low supply voltage. Due to the popularity of mixed-mode integrated circuit design, digital circuit noise can easily couple to analog circuit through power path. A cascode compensation method will be used for enhance analog circuit power supply noise rejection ability. In switch-capacitor application the input capacitor of operational amplifier will affect the speed of whole circuit. A neutralization circuit skill will improve this problem in this thesis. A 1.1 voltage operational amplifier with high power supply rejection ratio is designed in this thesis using TSMC0.35μm 2P4M process .
Lin, Bing-Jyun, and 林秉均. "Adjustable Phase-Shifted Full-Bridge High Voltage DC Power Supply with Fully Digital Controller." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ftj3mr.
Повний текст джерела大同大學
電機工程學系(所)
102
An adjustable phase-shifted full-bridge high voltage dc power supply with fully digital controller is proposed in this paper. The proposed controller consists of a user interface control and a phase-shifted full-bridge control. By varying the phase-shifted angle calculated from the parameters entered in the user interface and the sampling output voltage, the output voltage is equal to the preset output voltage. In addition, the proposed system can achieve ZVS under various load conditions to reduce power loss. Next, a multi-range sampling circuit is proposed in this paper. This circuit can increase the precision of the output voltage and indirectly improve the ADC resolution while the output voltage is modulated in a wide range. Finally, the system efficiency is up to 94.2% at full load. In addition, the output voltage is close to the preset output voltage under various load conditions, and the voltage deviation is 0.005% ~ 0.49%
Huang, Jian-Ming, and 黃建銘. "A High Voltage Power Supply with Continuous Adjustable Function for Corona Wind Radiating Application." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/48263873557637781948.
Повний текст джерела大同大學
電機工程學系(所)
102
A high voltage power supply with continuous adjustable function for corona wind radiating application is proposed in this thesis. First, the digital control scheme is adopted to overcome the problem for difficultly modulating the output voltage for traditional high voltage power supply. Moreover, the implemented single-transformer incorporating voltage multiplier structure and multi-transformers structure are used to compare the system performances. Next, all the mathematical models in the all operating mode are derived to get the corresponding relationship between the control signal and the output voltage. Furthermore, the prototype achieves electrical isolation and cost down by using the primary side control (PSR) technique to conduct the voltage feedback. In addition, the over current protection function is also incorporated into this system. Finally, the power factor corrector (PFC), auxiliary power circuit and high voltage power supply are integrated in the proposed system. Besides, all the simulation and experimental results are very close to the theory predictions.
謝明泰. "Design of a High Voltage Power Supply for Traveling Wave Tube Using Feedforward Compensation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/02437527780604889816.
Повний текст джерелаHsiang, Sing-Syue, and 向星學. "The Research on Diagnosis Wiring Connection with Meter of Facility of High Voltage Power Supply." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/7wqdrq.
Повний текст джерела國立臺北科技大學
電機工程系所
102
In the process of power generation, transmission and distribution, the energy measurement is a very important part in power system. The high voltage consumers have watt-hour meter, var-hour meter, high voltage current transformer(CT) and high voltage Potential Transformer(PT) in the Meter of Facility(MOF). The failure of Metering devices contains internal components that operate in wrong way and wiring connect of human’s mistake, That will not accurately calculate the energy of customers. Therefore, the research is practical on the method of fault detection. In this study, according to the wiring structure of Taipower. Simulate plenty of fault models of meter incorrect wiring connection, And analyze the relation of electrical parameters. Finally, utilizing Borland C++ Builder designs a fast and accurate way to detect incorrect wiring connection, and reduce the probability of mistake by human’s determining. The result of this study shows that system can determine incorrect wiring connections accurately and monitor immediately. Consequently, this paper provides reference for Taipower and customers.
Ku, Ying-Ying, and 古盈霙. "Design and Implementation of a High Voltage Power Supply for Portable Silent-Discharge Ozone Generators." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/04750801814454181922.
Повний текст джерела國立清華大學
電機工程學系
96
Ozone has strong sterilization capability and does not cause re-pollution to the environment. However, since it has a short half-life, meaning that it deoxidizes into oxygen in a short time span, makes it impossible to be put in mass production and store in containers. Hence, for small scale applications like in domestic use, a miniaturized ozone generator would be very convenient. The dielectric barrier ozone generator is one of the quietest types among all discharge ozone generators. Therefore, the main purpose of this thesis is focused to design and implement a high voltage power supply for miniaturized portable dielectric barrier discharge (also called the silent discharge) ozone generators for the use in indoor environments. Basically, the contributions of this thesis can be summarized as follows. First, propose a high voltage power supply for silent discharge ozone generators used for indoor applications and miniaturization demands. The high voltage power supply consists of two stages. The front stage is a boost-type power factor correction circuit to achieve low current harmonics and high power factor. The second stage is a half-bridge high frequency series-parallel resonant inverter with zero-voltage switching to achieve less voltage stress and higher efficiency. Second, some design criteria are given for designing the high voltage power supply by employing the high frequency equivalent circuit model of the ozone generator together with a burst mode control to achieve more robust output voltage under changing loads. Finally, a high voltage power supply with 80~270Vac 60Hz input, 2kVac 300kHz output, and 500W rated power is actually implemented. The power factor of the front stage PFC is 0.95~0.99, and the highest efficiency may reach 96%. The second stage high voltage inverter can achieve an efficiency of 87% approximately. It turns out that the overall efficiency can reach 83.5%. Also, it is seen that the constructed prototype can indeed achieve the expected performance.
Chen, Yan-Jhang, and 陳晏彰. "Study and Implementation of a 30 kV High-voltage DC Power Supply with a Wide-range of Adjustable Output Voltage." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/56428955630551991376.
Повний текст джерела國立臺灣科技大學
電子工程系
100
This thesis mainly develops a 30 kV high-voltage DC power supply with a wide-range of adjustable output voltage. The power stage consists of a power factor corrector (PFC) and a buck current-fed push-pull DC-DC converter. The pre-stage PFC circuit is operated at boundary current conduction mode (BCM) to achieve high input power factor and provide a 380 V regulated DC voltage to the post-stage circuit. The buck current-fed DC-DC converter with a secondary voltage multiplier provides a high-voltage output from 5 kV to 30 kV with a rated power of 100W. A flyback converter is designed as the auxiliary power supply to provide two sets of 15V/0.2A and a 5V/2A for control stage. In this thesis, the operation principles and design considerations for the studied high-voltage power supply are discussed and analyzed. A laboratory prototype circuit is built and tested. The experimental results are shown to verify the feasibility of the proposed scheme.