Дисертації з теми "Local power supply system"
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Bahadornejad, Momen. "On-line local load measurement based voltage instability prediction." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16187/.
Повний текст джерелаBüchner, Stefan. "Energiemanagement Strategien für elektrische Energiebordnetze in Kraftfahrzeugen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1228736572957-56492.
Повний текст джерелаГоренко, Дар’я Сергіївна. "Оцінювання обмінних процесів у локальних системах електропостачання з джерелами розосередженої генерації". Thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/32609.
Повний текст джерелаIn the dissertation the complex analysis of the peculiarities of functioning of local power supply systems (LPSS) is carried out taking into account the modern requirements of the Smart Grid concept and the comparative analysis of methods of estimation of exchange processes in LPSS with dispersed energy sources is performed. The need to extend the known LPSS system to adequately assess the EMC levels in the LPSS with the requirements of the Smart Grid concept and to estimate the energy flow rates using known indicators is justified. The analysis of exchange processes of LPSS under the influence of different types of impulse disturbances and sources of non-sinusoidal voltage and current caused by the peculiarities of modes of operation of both individual elements and the system as a whole for single and three-phase cross sections of LPSS is carried out. New relationships were obtained to evaluate the effect of non-sinusoidality and to take into account the ripple coefficients on the nature of the exchange processes. The analysis of the exchange processes in LPSS has been carried out taking into account the real characteristics of the elements with electromagnetic bonds (transformers, reactors, transmission lines, etc.) and new relationships have been obtained, which link the exchange power and the coefficients of magnetic coupling for one and three-phase LPSS operating in both sinusoidal and non-sinusoidal modes, as well as in symmetric and asymmetric modes. Regulatory and methodological support of the expanded energy audit with the use of exchange power was developed and tested. Regulatory and methodological support was used: for conducting an expanded energy audit at the enterprise of СE «Vasylkiv Leather Company» (Vasylkiv, Kyiv region); analysis of parallel operation of standby power supply systems both separately and in combination with the network used for powering server equipment of PLC «Prostonet»; was the basis for the course of lectures on discipline "Electrical Engineering Complexes", which will be taught in 2019 at Vasylkivsky College of NAU. A specialized software module and regulatory and methodological support for the extended energy audit using exchange power have been developed and tested. The proposed regulatory and methodological support makes it possible to: determine the exchange power and the proportion of mutual influence in an arbitrary intersection of LPSS, taking into account the peculiarities of their configuration, modes of operation of individual elements and LPSS as a whole; to obtain information on exchange processes in the LPSS with different levels of information support; to adequately take into account the peculiarities of the flow of modes in the LPSS, in particular, the bidirectionality of electricity flows and to determine their real distribution in the elements of LPSS.
Eireiner, Matthias. "Power supply integrity in low power designs." Aachen Shaker, 2009. http://d-nb.info/99845642X/04.
Повний текст джерелаZitouni, Salah. "An expert system for electric power system management." Thesis, University of Dundee, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338200.
Повний текст джерелаSong, Jian, Ni Luo, Liu Cao, and Min Xu. "An Evaluation System for Airplane's Power Supply." International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596441.
Повний текст джерелаPower supply is the most critical unit in an airplane. A defect in a power supply might lead to a crash. Therefore, it is very useful and important to monitor the status of the airplane's power supply during flight. This paper presents a real-time evaluation system constructed by a central process unit for processing and detecting defects and several remote units for acquiring parameters. Because of the huge amount of data acquired, a combination of Ethernet and time division multiplexing technique has been applied for constructing a 2.5Gbps synchronous data transportation network for the system.
Chan, Weng Hong. "Harmonic reduction and power factor correction in low power supply system." Thesis, University of Macau, 2002. http://umaclib3.umac.mo/record=b1445817.
Повний текст джерелаBiner, Dominik. "Power supply and motion system for planetary rover /." Sion, 2008. http://doc.rero.ch/record/10802?ln=fr.
Повний текст джерелаHou, Anton, and Anders Haponen. "The power supply system for the MUSCAT experiment." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199316.
Повний текст джерелаBidgol, Saman, and Viktor Granberg. "Power supply system for the ISAAC rocket experiment." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199333.
Повний текст джерелаReddy, Amarnath. "Expert system based switched mode power supply design." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/12842.
Повний текст джерелаMoskalenko, M. M., and V. V. Dulya-Borzenec. "Autonomous power supply for safety systems." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/49068.
Повний текст джерелаHomon, Bohdan. "Combined power supply system converting unit with renewable sources." Thesis, Дніпропетровський національний університет залізничного транспорту ім. академіка В. Лазаряна, 2017. https://er.knutd.edu.ua/handle/123456789/9329.
Повний текст джерелаСтаття присвячена питанню впровадження відновлювальних джерел енергії (сонячна батарея, вітрові турбіни) в місцевих електричних системах. Покращення та широке розповсюдження поновлюваних джерел енергії розподіленої генерації є одним із способів підвищення енергетичної безпеки країни.
Статья посвящена вопросу внедрения возобновляемых источников энергии (солнечная батарея, ветровые турбины) в местных электрических системах. Улучшение и широкое распространение возобновляемых источников энергии распределенной генерации является одним из способов повышения энергетической безопасности страны.
Дяченко, Олександр Васильович. "Розвиток методів знаходження часткової участі у відповідальності за порушення якості електроенергії". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/35837.
Повний текст джерелаThe thesis is for obtaining scientific degree candidate of technical sciences in specialty 05.14.02 – Electrical power stations, networks and systems. National Technical University "Kharkov Polytechnic Institute", Kharkov, 2018. Analysis of the methods of deterministic determination of the partial participation of subjects in the responsibility for violating the quality of electricity showed that there are developed methods and techniques for: voltage symmetry, sinusoidal voltage curve, constant voltage deviation. At the same time, known developments do not completely solve the problems of operation of electric networks and do not cover all the indicators of electricity quality, characterized by a long deviation of voltage characteristics from nominal values. It is necessary to solve the problem of constructing a local device to determine the partial participation of consumers in the distortion of symmetry, as well as develop a method of definition responsibility of subjects for violating the requirements for the quality of electricity in terms of voltage fluctuations. The method of determining the location of the source of voltage fluctuations in the power supply system is developed. Received the method of analysis of the voltage curve in relation to discrete processing of information. The method allows to detect and evaluate local extrema, to allocate areas of monotone change and invariance of the voltage curve. Developed a method for determining the responsibility of the consumer and supplier for the distortion of voltage symmetry, based on the calculation of the balance of electricity, which requires the definition of customer responsibility in the monitoring period. The methods of analysis of the voltage curve analysis, the determination of the location of the source and the partial involvement of the consumer in the responsibility for exceeding the permissible level of voltage fluctuations, the determination of the partial participation of the subjects in violation of the symmetry of the local system of consumption accounting and electricity quality control, a comprehensive method for determining the partial involvement of the consumer in liability for violating the quality of electricity.
Lao, Keng Weng. "A novel electric traction power supply system using hybrid parallel power quality compensator." Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2550461.
Повний текст джерелаSpaulding, Jonathon David. "Power supply switching for a mm-wave asymmetric multilevel outphasing power amplifier system." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62479.
Повний текст джерелаCataloged from PDF version of thesis.
This thesis demonstrates power switches to be used in our new Asymmetric Multilevel Outphasing (AMO) transmitter architecture at mm-wave frequencies. The AMO topology breaks the linearity vs. efficiency design objective in radio frequency power amplifiers (PAs) which has until now appeared to be fundamental. These power switches allow for the modulation of the PA supply rail between four discrete levels at a maximum sampling rate of 2 GHz. This modulation results in a higher average system efficiency by reducing the outphasing angle between the phase paths. This work was designed in a 130-nm SiGe BiCMOS process.
by Jonathon David Spaulding.
M.Eng.
Ferdoush, Md Asif. "System Stability of the Overhead Power Supply System used in the Electric Road System." Thesis, Scania CV AB, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-399815.
Повний текст джерелаДяченко, Олександр Васильович. "Розвиток методів знаходження часткової участі у відповідальності за порушення якості електроенергії". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/35835.
Повний текст джерелаThe thesis is for obtaining scientific degree candidate of technical sciences in specialty 05.14.02 – Electrical power stations, networks and systems. National Technical University "Kharkov Polytechnic Institute", Kharkov, 2018. Analysis of the methods of deterministic determination of the partial participation of subjects in the responsibility for violating the quality of electricity showed that there are developed methods and techniques for: voltage symmetry, sinusoidal voltage curve, constant voltage deviation. At the same time, known developments do not completely solve the problems of operation of electric networks and do not cover all the indicators of electricity quality, characterized by a long deviation of voltage characteristics from nominal values. It is necessary to solve the problem of constructing a local device to determine the partial participation of consumers in the distortion of symmetry, as well as develop a method of definition responsibility of subjects for violating the requirements for the quality of electricity in terms of voltage fluctuations. The method of determining the location of the source of voltage fluctuations in the power supply system is developed. Received the method of analysis of the voltage curve in relation to discrete processing of information. The method allows to detect and evaluate local extrema, to allocate areas of monotone change and invariance of the voltage curve. Developed a method for determining the responsibility of the consumer and supplier for the distortion of voltage symmetry, based on the calculation of the balance of electricity, which requires the definition of customer responsibility in the monitoring period. The methods of analysis of the voltage curve analysis, the determination of the location of the source and the partial involvement of the consumer in the responsibility for exceeding the permissible level of voltage fluctuations, the determination of the partial participation of the subjects in violation of the symmetry of the local system of consumption accounting and electricity quality control, a comprehensive method for determining the partial involvement of the consumer in liability for violating the quality of electricity.
Rahmat, Mohd Khairil. "Methods for reliability analysis of uninterruptible power supply (UPS) system." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444418.
Повний текст джерелаAndersson, Tobias, and Jonathan Toft. "Data communication and power supply on a two conductor system." Thesis, Uppsala universitet, Elektricitetslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-359781.
Повний текст джерелаJiang, Zhen. "Proposed Improvements to the Neutral Beam Injector Power Supply System." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami150187797853065.
Повний текст джерелаDahl, Ferdinand Meltzer. "Interconnection of an Isolated Power System to an External Power Supply : - Dimensioning, modelling and control." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26771.
Повний текст джерелаZhao, Yu. "Reverse osmosis desalination in a mini renewable energy power supply system." Curtin University of Technology, Dept. of Electrical and Computer Engineering, 2006. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=18552.
Повний текст джерелаModelling and simulation of the system components in MATLABSimulink is presented, together with a discussion of the control systems modelling and design procedure, in which the aim was to improve the efficiency of the reverse osmosis system. Simulations show the designed reverse osmosis system with Proportional Integral and Derivative (PID) controller has better performance than other controllers. This consequently leads to a lower overall cost of the water, as well as reducing full maintenance cost of the electric drives in the reverse osmosis unit. Additionally, the configuration of the remote control system through General Package Radio System (GPRS) network is depicted. After the PID control algorithm was programmed into the Programmable Logic Controller (PLC), system experiments were carried out in short durations and long durations. System performance was monitored and experimental results prove that the new control strategy applied increase the water productivity and is able to improve the system efficiency up to 35%. Based on the data obtained from the simulations and experiments, Mundoo Island was chosen to be the location for a case study. The electric load profile of the island was derived from the Island Development Committee in Mundoo.
A water demand profile was created and modelled in Matlab to be the input of the reverse osmosis system. The electric load of the reverse osmosis system was generated from Matlab simulation. This result was entered in Hybrid Optimisation Model for Electric Renewables (HOMER) simulator. Having the designed RO unit as one of the electric loads, the entire remote area power supply (RAPS) system was tested in simulations which shows the energy cost is AUS$0.174 per kWh, lower than the Island Development Committee budget estimation of AUS$0.25 per kWh. The cost of the water treatment is very promising at AUS$0.77 per m3.
Cheng, Limin. "A universal controller for a single-phase uninterruptible power supply system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ42361.pdf.
Повний текст джерелаAllinson, Johanne Claire. "Supply linkages and power relations in the UK agro-food system." Thesis, Northumbria University, 2004. http://nrl.northumbria.ac.uk/951/.
Повний текст джерелаLi, Qiong. "Developing Modeling and Simulation Methodology for Virtual Prototype Power Supply System." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/27462.
Повний текст джерелаPh. D.
Zhou, Qinsheng. "Integrative Power Supply Solution for Future Generation Vehicles." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-180331.
Повний текст джерелаAbrahamsson, Lars. "Optimal Railroad Power Supply System Operation and Design : Detailed system studies, and aggregated investment models." Doctoral thesis, KTH, Elektriska energisystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-107037.
Повний текст джерелаQC 20121206
Schmidt, Uwe. "Uninterruptible power supply system using a dual converter in quasi-resonant mode." Thesis, Brunel University, 1995. http://bura.brunel.ac.uk/handle/2438/5410.
Повний текст джерелаSmilek, Jan. "Energy Harvesting Power Supply for MEMS Applications." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-386765.
Повний текст джерелаDuvnjak, Zarkovic Sanja. "Security of Electricity Supply in Power Distribution System : Optimization Algorithms for Reliability Centered Distribution System Planning." Licentiate thesis, KTH, Elektroteknisk teori och konstruktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281813.
Повний текст джерелаQC 20200925
Pipattanasomporn, Manisa. "A Study of Remote Area Internet Access with Embedded Power Generation." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/30267.
Повний текст джерелаPh. D.
Skogberg, Ronny. "Railway power supply system models for static calculations in a modular design implementation." Thesis, KTH, Elektriska energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170726.
Повний текст джерелаI ett flertal tidigare undersökningar och rapporter har konstaterats att spänningsvariationer, och andra förändringar, hos strömförsörjningen till tåg kan påverka dess prestanda och dess färd längs rälsen. Som en del av ett modulärt programpaket för tågrelaterade beräkningar uppstod därför ett behov av elkraftsberäkningar, både för planering och operativ drift. I denna rapport sammanställs och används ett antal olika statiska modeller för tågrelaterade effektflödesberäkningar. Modellen för omformarstationer har även utökats för att hantera konfigurationer då olika typer av omformare används. Ett särskilt intresse för tågtypen IORE, som används för malmtransporter längs Malmbanan, och dess påverkan av en förändrad strömförsörjning, har funnits då olika typer av mekaniska beräkningar för denna tågtyp utförs i andra befintliga moduler. En del av projektet bestod i att undersöka förändringar i elförsörjningen, på grund av en ändrad styrning av tågens omformare, både vid återmatning och motordrift. En föreslagen nodmodell för den statiska delen av elnätet har använts för att förenkla elsystemsmodellen och uppbyggnaden av simuleringsmiljön. Av resultaten från simuleringarna kan man anta att under normala förhållanden, och med det använda körschemat, bör ej spänningen vara en begränsande faktor för tågens drift. Övriga simuleringar visar också att en mer optimerad effektfaktor för högre återmatad bromseffekt eller för generering av reaktiv effekt kan användas för att slippa investeringar i infrastrukturen, eller för att utöka trafikmängden för ett givet system.
周加昇. "Power supply automated test system." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/8tg9vs.
Повний текст джерела聖約翰科技大學
電機工程系碩士在職專班
104
In this paper, power supply automated test system is designed by Labview software. The main purpose is to perform electrical tests of power supply by program, and to turn the test results into a relevant test report. This research has the following advantages: (1)decrease test time. (2) shorten test steps, improve test accuracy and reduce human errors.(3) set up the program conveniently. (4) the system provides operational history for debug.This paper has been proved by experience: under the same power supply test items, compared with manual test time, this automated system test time is reduced by 40%~50% approximately. It can make it convenient for tester schedule arrangements. The automation test system settings are simple; you only need to set up the relevant test conditions, then the system can perform the tests and automatically turn the results into a test report. In addition, the report provides a recording function for debug, so that testers can have the debug history for the relevant tests; successors can refer to the history, effectively avoiding the time of studying all over again. The automated test system has the advantages of standardizing tests, increasing productivity, and reducing costs. Currently, it has become a trend that automated tests are gradually replacing manual tests. In this paper, the Labview diagram-controlling program (which is based on diagram programming language) can let users perform device control and test data retrieving more quickly, compared with traditional character programming language.
Zhang, Yu-Jia, and 張育嘉. "Study of Retired Battery Power Supply System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/uvmgu4.
Повний текст джерела國立彰化師範大學
電機工程學系
107
With the rapid development of electric vehicles, the number of retired batteries is increasing day by day, and these retired batteries can be converted into fixed-type battery energy storage systems for green energy applications. However, the difference in capacitance between the retired batteries is significantly greater than that of the new batteries, so a robust battery management system is necessary to ensure the safe and normal operation of retired batteries, and to make sure the battery pack can supply the current required by the load. Thus, this thesis proposes the concept and technology of battery weakness-tolerance to achieve the retired battery power supply system. In order to verify the feasibility of the proposed system, a240W prototype is designed and completed, and two 12V/55AH lead-acid batteries are used to assess performance. Experimental results show that the realized prototype can ensure that the battery pack can supply the current required by the load within the defined tolerance index, which verifies the feasibility of the proposed method.
JIANG, MING-DONG, and 江銘棟. "A Study of Contactless Power Supply System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/77613914986659212271.
Повний текст джерела南臺科技大學
電機工程系
104
This thesis presents an inductive contactless power transfer system which includes a full-bridge converter, a resonant circuit and a bridge rectifier filter circuit. The full-bridge circuit serves as the transmitter circuit in the system. Since the electromagnetic induction coils are loosely coupled with a very low coupling coefficient, it is necessary to add resonant capacitor on the two sides of the coils for impedance matching. This research adopts the SP compensation circuit as impedance matching. S represents a coil in series with the compensation capacitor. P represents a coil and the related compensation capacitor parallel connected. Alternating magnetic field of the coil on the primary side is generated by current flowing through the coil. The coil on the secondary side receives power from that on the primary side which is based on the principle of magnetic induction. The power received by the coil on the secondary side enters the rectifier/filter circuit and is output to the load. In this paper, phase shift pulse width modulation control and variable- frequency control are used and compared. Both the methods include voltage loop and current loop which making inductive contactless power transfer system control completed. Final, A prototypical of contactless power transfer system, which has 15 cm distance between two coils, 200V input voltage, 48V output voltage, and 500W output power is settled to verify the proposed control idea. Keyword: Wireless charger、Wireless power transfer、contactless power transfer
Tsao, Chun-Ming, and 曹俊銘. "An FPGA Based Uninterruptible Power Supply System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/00743975209337731996.
Повний текст джерела國立成功大學
電機工程學系碩博士班
94
This thesis proposes an uninterruptible power supply (UPS) system with digital and analog controller to realize this system. The DC/AC inverter uses a field-programmable gate array (FPGA) as a controller to achieve the digital pulse-width-modulation (PWM) control. Then, the verilog hardware description language (VHDL) is used to write the control procedures and ISE6.3 is served as the software development platform to perform syntax testing. Furthermore, the power factor correction (PFC) circuit, the charge circuit, and the spare power circuit are controlled by analog circuits. In addition, the FPGA is used to control the battery charge and spare power circuits. Under the normal utility-line power supply condition, the boost PFC circuit provides DC bus voltage the load and also maintain battery at the highest capacity. While the utility-line power is abnormally interrupted, the batteries supply the energy for the inverter to maintain a stable AC voltage supply for the load system. Finally, a 600W UPS system is implemented to verify the functionalities of the proposed designs.
Cheng, Cheng-Yan, and 鄭裎諺. "Stackable power supply system for automatic guided vehicles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/b6vv24.
Повний текст джерела國立中央大學
機械工程學系
105
The purpose of the thesis is to design the power system of the Automated Guided Vehicle. We use Li- ion battery as a power source, and series six Li-ion batteries as one Li-ion battery package. It can also series different Li-ion battery packages to supply different voltage for use. Meanwhile, we complete electricity measurement, charge process management, and dispatch the power for the power system. The power system uses open circuit voltage with Coulomb Counting Method to measure the electricity, balance Li-ion batteries power by discharge to lengthen life cycle and use appropriate charge process management according to the different voltage of Li-ion batteries. We also design various protected circuits to confirm the safety of using power. The power system can use in different needs by different configuration. We design power supply management, charge process management, and dispatching power experiment in the experiment design chapter in the thesis to confirm the feasibility of the system.
Wen, Jun-Hong, and 溫峻宏. "Wall Plug-in Power Supply System for AGV." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/04303430977065153352.
Повний текст джерела大同大學
機械工程學系(所)
96
The purpose of this study is to design a self-propelled system which connects itself to an electric socket by directing automatic machinery to search and locate the socket on the wall based on image processing technology. The body of this system contains one Microchip PIC18F452 microcontroller as the core of the matter, a self-propelled unit made of two Stepping Motors, two mechanical arms, six infrared distance measured sensors which have 10-80 cm of detection distance, one CMOS webcam with 640x480 resolution, and four batteries supporting 6 hrs of operative time. The tracked target of this system is a regular electric socket on the wall. The man-machine interface is written by Borland C++ Builder, which principally processes the image and communication. The image of the electric socket on the wall is captured by CMOS camera and processed by image processing program to direct self-propelled unit of the system for approaching the socket. The body of this system moves toward and paralleled the wall until the distance to the wall is setting cm followed by plugging the plug into the electric socket by mechanical arms. This study successfully developed a self-propelled system which can be used in different environment and can search a regular socket for automatically charging itself.
Lu, Ching-nan, and 盧慶南. "Supply Chain Management for EPC Project-A MRT Power Supply System Case Study." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/429xn9.
Повний текст джерела國立臺灣科技大學
工業管理系
102
Industry factory construction such as refinery, power plant and modern office building, macro shopping mall, it happened that operation schedule were delayed due to improper selection of supply chain. However, construction of MRT, supply chain is directly related with public transportation, which in connection with everyone’s life at present civilization society. How to adopt the most optimum strategy is a key issue for the project supply chain. This study is based on development of an assumed SIGMA corporation, its contract from small scale to large scale, and from local to globalization project of MRT power supply system. During the period, SIGMA corporation is encountering the difficulties. This study introduce the management theory of organization parageneis and independent to solve problems. To aim final target of project completion are settled on schedule with expected qualification, this thesis is also introduced concept of project management to establish the structure of supply chain resource series for MRT power supply system. From the beginning of subcontractor period, through intermediary channel agent period, joint venture period and international league period to study engineering, procurement and construction in connection with supply chain management.
Chen, Wei Lun, and 陳韋倫. "Realization Of Power Supply to the LabVIEW Monitoring System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/97065090556876696703.
Повний текст джерела長庚大學
商管專業學院碩士學位學程在職專班資訊管理組
102
Electronic load is able to measure the relationship between voltage and current of Power Supply under no load or max load. It also verifies the in-put/output voltage, input current, and input/output power to satisfy Cli-ent’s demands. This can verify the integrity of functions of power supply. LabVIEW is the widest use in this industry. LabVIEW is the earliest developed and well-developed. It combines the two concepts of Structured and Functional Programing. This system uses the capability of operation and display of ordinary computers. That makes the users to set up their monintor system with the cheap computer hardware. This article utilizes LabVIEW, virtual instrument control software, to apply electronic load monitoring system to power supply. Brand C monitor system, which was adopted by our company, has the measurement deviation of power. In addition, it cannot be replaced by the same measurement equipment of our customers. If we depend on the manual measurement by RD, it takes a lot of man-hour and generates error of measurement data, resulting from artificial mistake of RD’s transcription. Therefore, the monitoring system, proposed on this article, not only provides Graphical User Interface for RD’s convenience, but also adopts the same measurement equipment with our customers’ to build up the same environment. This would improve the RD’s capability of measurement and verification.
HUANG, CHUNG-CHENG, and 黃崇誠. "Development of power management and supply system of CubeSat." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/b8d7vc.
Повний текст джерела國立中央大學
光機電工程研究所
102
The study design of a complete power management and supply system for cubic satellite , using secondary lithium batteries and super capacitor as a power storage element in the satellites, and with the use of solar power charging module supplement provides cubic satellite computer and scientific payload set the required power use, and with input overvoltage protection and overload protection to prevent accidental damage to the system, and equip the communication interface for controlling of each power channel . After completing the circuit and mechanism design, functionality and performance of the power system is also be verified.
HSIEH, CHIH-CHANG, and 謝志昌. "Design and Implementation of 1kW PFC system power supply." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/mbbkkd.
Повний текст джерела國立高雄應用科技大學
電子工程系
105
Power factor correction(PFC) has been widely used to increase the efficiency of power transmission, especially, in the modern Green Power era. Most electromechanical machines are inductive load. This causes a non-zero difference between the phases of current and voltage and leads to power factor smaller than one, which means that the effective power would be smaller than the apparent power. In other words, the efficiency of the power transmission is smaller than 100 percent. In order to improve this problem, a power factor correction circuit has to be used, especially, in high power machines. This thesis aims to design a high power DC supply with the PFC operating in continuous current mode. According to the considerations of low cost and low harmonic distortion, the average current mode control is used, In addition, a zero-crossing AC switch using TRIAC is applied to avoid the inrush current. Aver implementation, the measured power efficiency and power factor are respectively greater than 0.95 and 0.90, for the output power among 300W and 1000W.
Huang, Li-Yu, and 黃立宇. "A Subranging SAR ADC with Hybrid Power Supply System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/e9tdv6.
Повний текст джерела國立臺灣大學
電子工程學研究所
106
In recent years, with the progress of the process, the low speed problem of subrange successive-approximation register (SAR) ADC has been improved. By virtue of it’s low power consumption characteristics, it has gradually become the mainstream analog-to-digital converter. In low-power SAR ADC design, the quality factor have achieved the femto level. In contrast, the power consumption of power supply circuit had significantly beyond the analog-to-digital converter. In order to ameliorate this problem, this essay propose a hybrid power supply system that is synchronized with the analog-to-digital converter. It can increase the efficiency of the power supply circuit dramatically. This proposed work can achieve the conversion rate of 400KS/s with 200 KHz input frequency. Including dynamic LDO and SAR ADC, The active area is only 0.0098 mm2. Without external-decoupling capacitor, it consumes 0.334nW and FoMW of 1.63fJ/conversion-step. It is suitable for touch with display driver integration (TDDI) module.
Gao, Yong Qing, and 高永慶. "Cost effective, unlimitedly expandable modular DC power supply system." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/23788280876981746775.
Повний текст джерелаZheng, Ying-Xin, and 鄭盈信. "Design of Aquarium Monitoring System by Wireless Power Supply." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/23fd9c.
Повний текст джерела國立虎尾科技大學
電機工程系碩士班
105
This thesis develops a monitoring system for aquariums by wireless power supply, and the used in this paper is a home edition aquariums, it’s capacity of about 15 liters. The monitoring system is built by Arduino and App Inventor 2, which uses Bluetooth to connect the cellphone and monitoring system, it can be controlled by cellphone, and it has two operating modes, one is manual mode and the other is automatic mode. When the switch is switched to automatic mode the system will be controlled by the value of sensor, or it can be switched to manual mode, the system will be controlled by user from the cellphone. The power supply of the monitoring system is using wireless power supply module which is using magnetic field coupling resonant to provide 12 voltage to 5 voltage.
Hong, Wei-En, and 洪偉恩. "Household Disaster Prevention Type Fuel Cell Power Supply System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/69849667867655484453.
Повний текст джерела國立高雄第一科技大學
電子工程研究所
101
This paper presents the design of a family disaster prevention type fuel cell power supply system, this system architecture is to use the fuel cell provides power, high step-up circuit structure utilizes the boost-flyback converter based derived to boost-forward-flyback converter, through the full-bridge converter switching DC to AC used to supply the family. This system with hydrogen as the fuel supply electricity, and the supply of electricity will not cause environmental pollution, it’s very environmentally friendly. When emergency or disasters can provide basic and essential power of the family. Finally, the implementation of the circuit specifications of the input voltage is 80 V , the output voltage of 380 V and a rated power of 1000 W high booster circuit, and digital controller dsPIC30F4011 as the full-bridge converter of the power switch control, final experimental results of the output AC 60Hz , 110V to verify the effectiveness and practicality.
Chen, Zhi-Wei, and 陳志瑋. "Reliability Driven Power Supply System Design for Signal Integrity." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/70376634448154787519.
Повний текст джерела中華大學
資訊工程學系(所)
95
In modern VLSI chips, the increase in chip densities yields an increase in the currents drawn from the power network, and the increase in wire resistances makes the current delivery from the power network difficult. Based on the locations of the current requirements in a given floorplan, the floorplan–aware hierarchical power quad-grids(FHPQGs) are used to dynamically construct the topology of power grids to meet the local distribution of high current densities in the floorplan. Based on the geometrical structure in the proposed FHPQGs, an optimal circuit analysis approach is further proposed to accurately find the currents of all the reference branches and the voltages of all the reference nodes in the FHPQGs. Given a floorplan with hierarchical power quad-grids(HPQGs), the IR-drop constraint and the electro-migration constraint, an iterative two-phase approach is proposed to design reliability-driven HPQGs to assign limited power pads and power wires to supply the required current and satisfy the current density constraint for any power branch and the IR-drop constraint for any power node with minimizing total wiring area. The experimental results show that the iterative two-phase approach uses less total wiring area under limited power pads to release all the IR-drop constraints in reasonable CPU time for the tested examples.
CHIH-CHANG, CHANG, and 張誌彰. "Solar Cell Based Power Supply System For Household Requirment." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/25672155377272565673.
Повний текст джерела國立臺灣大學
電機工程學研究所
89
The thesis describes the implementation of the solar cell based power supply system for home use. The system contains two kinds of operation modes, independent-supply mode and parallel-to-utility mode. In the parallel- to-utility mode, the solar energy can be converted into AC power and fed into the utility by the inverter stage, also adapts to the characteristics of the solar cells and achieves maximum power point tracking operation. However, for the utility malfunction, system can soon detect automatically and switch to the independent- supply mode operation. In the independent-supply mode, system can supply constant voltage source for the household appliances requirements. The Proposed system controller is implemented by a low-cost micro- processor 80196MC. The hardware is designed for the 4kW application and the household requirements. Due to the fully-digitized control and the power module structure, not only the circuit can be simplified, but also the system reliability can be improved. On the other hand, built-in perfect protection that prevent system from being damaged should the utility malfunction or be over stressed. Finally, experimental results are provited to verify the theoretical discussion and design procedure of this system.
Sychenko, Viktor, Valeriy Kuznetsov, Yevheniy Kosarev, Petro Beh, Yuriy Sayenko, Bohdan Styslo, Mihail Pavlichenko, Ihor Vasilev, and Mykola Pulin. "The concept of a hybrid traction power supply system." Thesis, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/47444.
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