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Littérature scientifique sur le sujet « Power transformers design »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 11 mars 2023

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Articles de revues sur le sujet "Power transformers design"

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Orosz, Tamás, and István Vajda. "Design Optimization with Geometric Programming for Core Type Large Power Transformers." Electrical, Control and Communication Engineering 6, no. 1 (2014): 13–18. http://dx.doi.org/10.2478/ecce-2014-0012.

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Abstract A good transformer design satisfies certain functions and requirements. We can satisfy these requirements by various designs. The aim of the manufacturers is to find the most economic choice within the limitations imposed by the constraint functions, which are the combination of the design parameters resulting in the lowest cost unit. One of the earliest application of the Geometric Programming [GP] is the optimization of power transformers. The GP formalism has two main advantages. First the formalism guarantees that the obtained solution is the global minimum. Second the new solutio

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Orosz, Tamás. "FEM-Based Power Transformer Model for Superconducting and Conventional Power Transformer Optimization." Energies 15, no. 17 (2022): 6177. http://dx.doi.org/10.3390/en15176177.

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There were many promising superconducting materials discovered in the last decades that can significantly increase the efficiency of large power transformers. However, these large machines are generally custom-made and tailored to the given application. During the design process the most economical design should be selected from thousands of applicable solutions in a short design period. Due to the nonlinearity of the task, the cost-optimal transformer design, which has the smallest costs during the transformers’ planned lifetime, is usually not the design with the highest efficiency. Due to t

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Баширов, М., Mussa Bashirov, Азат Хисматуллин, Azat Hismatullin, И. Прахов, and I. Prahov. "Increasing of Power Oil-Filled Transformers’ Operation Reliability and Safety." Safety in Technosphere 7, no. 2 (2019): 15–21. http://dx.doi.org/10.12737/article_5c35cc6e2354f7.79418159.

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This paper is devoted to the currently urgent problem — increasing reliability and safety for power oil transformers’ operation with considerable long and short overloads through cooling systems’ efficiency upgrading, allowing increase the power oil transformers’ operation safety, engine life, reliability and economical efficiency. Statistical data on fault causes for transformers of different voltage classes and lifecycles have been given. Based on the study of statistical data it has been established that one of the main causes for transformers faults was the inefficiency of oil cooling syst

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Su, Biao, Li Xue Li, Yi Hui Zheng, Xin Wang, Yan Liu, and Chang Li Dang. "Design and Analysis of PCB Rogowski Coil Current Transformer." Applied Mechanics and Materials 672-674 (October 2014): 984–88. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.984.

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Electronic current transformers are more suitable for the development of power system compared with traditional electromagnetic current transformers. Rogowski coil current transformer is one of three electric current transformers. According to the measurement principle of Rogowski coils, the equivalent circuit of PCB Rogowski coils is analyzed. By using four PCB Rogowski coils combined, a PCB Rogowski coil current transformer is designed and tested. The results show that the designed PCB Rogowski coil transformer has good linearity and high sensitivity and measurement accuracy and it can meet

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Zhang, Zhan, and Cai Xia Gao. "Hardware Design of Online Monitoring System for Power Transformer Malfunction." Applied Mechanics and Materials 143-144 (December 2011): 618–21. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.618.

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Power transformers are vital equipments in the grid and their reliability can affect the security of the grid directly. So it is always necessary to monitor the power transformers online. The study designed a multi-parameter online monitoring system for power transformer malfunction utilizing DSP and computer technology. The paper mainly introduced the design and component selection of online monitoring circuit for partial discharge, dielectric loss, gas component in oil and iron core's grounding current. The result showed that this system can diagnose most the malfunctions in power transforme

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ÖZÜPAK, Yıldırım. "Performing Structural Design and Modeling of Transformers Using ANSYS-Maxwell." Brilliant Engineering 2, no. 2 (2021): 38–42. http://dx.doi.org/10.36937/ben.2021.002.005.

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Transformers have attracted great interest since they have been used due to their robustness and application in power systems. Therefore, the nominal values of transformers grow even more in larger power systems due to the constantly increasing power demand. Many types of research are carried out to increase the performance characteristics of transformers and their compatibility with power systems. There are different methods and analysis tools for these studies. One of them is ANSYS@Maxwell, which performs analysis based on the Finite Element Method (FEM). With this program, the design, model

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Ćućić, Branimir, Nina Meško, Martina Mikulić, and Dominik Trstoglavec. "Design improvements in modern distribution transformers." Journal of Energy - Energija 63, no. 1-4 (2022): 74–81. http://dx.doi.org/10.37798/2014631-4165.

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In the paper design improvements of distribution transformers related to improved energy efficiency and environmental awareness are discussed. Eco design of transformers, amorphous transformers, voltage regulated transformers and transformers filled with ester liquids are analyzed. As a consequence of growing energy efficiency importance, European Commission has adopted new regulation which defines maximum permissible levels of load and no-load losses of transformers with rated power ≤ 3150 kVA, and minimum peak efficiency index for transformers with rated power > 3150 kVA up to 40 MVA. The

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Chisepo, Hilary Kudzai, Leslie David Borrill, and Charles Trevor Gaunt. "Measurements show need for transformer core joint details in finite element modelling of GIC and DC effects." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 3 (2018): 1011–28. http://dx.doi.org/10.1108/compel-11-2016-0511.

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Purpose This paper aims to improve the finite element modelling of transformers subjected to DC excitation, by including core joint details. Design/methodology/approach Geomagnetically induced currents (GICs) or leakage DC can cause part-cycle, half wave saturation of a power transformer’s core. Practical measurements and finite element matrix (FEM) simulation were carried out using three laboratory-scale, untanked single-phase four limb transformers resembling real power transformers in terms of the core steel and parallel winding assemblies. “Equivalent air gaps” at the joints, based on AC m

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Sopov, Anatoliy I., and Aleksandr V. Vinogradov. "The Heating System of Agricultural Facilities Using Excess Heat Power Transformers." Elektrotekhnologii i elektrooborudovanie v APK 67, no. 1 (2020): 42–47. http://dx.doi.org/10.22314/2658-4859-2020-67-1-42-47.

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In power transformers, energy losses in the form of heat are about 2 percent of their rated power, and in transformers of large power centers reach hundreds of kilowatts. Heat is dissipated into the environment and heats the street air. Therefore, there is a need to consume this thermal energy as a source of heat supply to nearby facilities. (Research purpose) To develop methods and means of using excess heat of power transformers with improvement of their cooling system design. (Materials and methods) The authors applied following methods: analysis, synthesis, comparison, monographic, mathema

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Melnikova, O. S., and V. S. Kuznetsov. "Method of calculating the electric strength of oil channels of the main insulation of power transformers." Vestnik IGEU, no. 5 (December 30, 2020): 48–55. http://dx.doi.org/10.17588/2072-2672.2020.5.048-055.

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The most damage-sensitive unit of power transformers is the main insulation of the oil barrier type. The breakdown of such insulation occurs as a result of the breakdown of the oil channel near the high voltage winding. In accordance with traditional methods of calculating the dielectric strength of insulation, the value of the breakdown strength is determined by empirical formulas depending on the selected width of the oil channel. The existing methods do not consider the influence of the oil channel volume, of the electric strength the statistical characteristics of the oil, the design featu

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Thèses sur le sujet "Power transformers design"

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Carvajal, Angel J. "First principles design of coreless power transformers." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120875.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 117-118).<br>This thesis presents a theoretical foundation and methodology for designing novel 4-coil high frequency coreless power transformers from first principles via lumped equivalent circuit models. The procedure is ap

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Shen, Wei. "Design of High-density Transformers for High-frequency High-power Converters." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28280.

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Moore's Law has been used to describe and predict the blossom of IC industries, so increasing the data density is clearly the ultimate goal of all technological development. If the power density of power electronics converters can be analogized to the data density of IC's, then power density is a critical indicator and inherent driving force to the development of power electronics. Increasing the power density while reducing or keeping the cost would allow power electronics to be used in more applications. One of the design challenges of the high-density power converter design is to have high-

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Makowski, Nathanael Jared. "Proposal and Analysis of Demagnetization Methods of High Voltage Power System Transformers and Design of an Instrument to Automate the Demagnetization Process." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/431.

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Present demagnetization methods for large power system transformers are time consuming and can be dangerous to persons performing demagnetization. The work of this thesis was to develop improved demagnetization methods and to construct an automated instrument that would implement the methods developed. One previously developed method was analyzed for effectiveness. Then, two new methods for demagnetization were developed and also analyzed for effectiveness. An automated test instrument prototype was redesigned to be able to accommodate these methods and to improve the safety of the user. The p

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Xue, Jing. "Single-phase vs. Three-phase High Power High Frequency Transformers." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32919.

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This thesis proposes one comparison methodology for single and three-phase high power high frequency transformers in power conversion systems. The objective is to compare the volume of the transformers. And single and three-phase Dual Active Bridge Converter (DAB1 and DAB3) topologies with single and three-phase isolating transformers are selected for the transformer comparison. Design optimization of power transformer has been studied and simplified models have been built for the single and three-phase transformer design optimization in this work, including assumptions for core shapes, materi

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Economides, Sophia Betty. "Design and application of multilayer monolithic microwave integrated circuit transformers." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312971.

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Dai, Ning. "Modeling, analysis, and design of high-frequency high-density low-profile power transformers." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151512/.

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Wilson, Colin Richard. "The design and development of fast pulsed power supplies using Transmission Line Transformers." Thesis, University of St Andrews, 1992. http://hdl.handle.net/10023/13600.

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This thesis is concerned with the development of Transmission Line Transfomer (TLT) pulsed power supplies and the generation of fast risetime (>50ns), good quality, high repetition-rate voltage pulses for flash x-ray preionisors and other applications. It explains the principle of the TLT and reports on two TLT pulsed power supplies that have been built. The first, or prototype, produced output voltage pulses with risetimes of 50ns and durations of 200ns and was used to power a flash x-ray preionisation source for a mercury bromide laser. The second, a 50kV, 100? device, was built as part of a

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Goad, Stephen D. "The theory and design of switched-mode power transformers for minimum conductor loss." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/52290.

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A comprehensive and general analysis of the electromagnetic fields, power dissipation, and energy storage within transformer windings is presented. Emphasis is placed on applications in switched-mode power conversion. One-dimensional radial variation of the field quantities is assumed. The first phase of the investigation is for sinusoidal excitation; solutions for the current density and magnetic field intensity are derived and studied in order to develop a fundamental understanding of the basic phenomena. Expressions for the power dissipation and energy storage in both single- and

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Gradzki, Pawel Miroslaw. "Core loss characterization and design optimization of high-frequency power ferrite devices in power electronics applications." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-165934/.

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Di, Capua Giulia. "Models and methods for the design of isolated power converters in high-frequency high-efficiency applications." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/893.

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2011 - 2012<br>Isolated power supplies design requires the achievement of overall stress, losses, cost, size and reliability trade-off. This problem is of considerable importance in modern applications of power converters, as for energy saving issues as for the achievement of high power density capabilities needed to integrate the power supply into the same boards where the system they feed is hosted. The aim of this PhD dissertation is to discuss the fundamental issues regarding the design of high-efficiency high-power-density isolated power converters, related to the transformers design and

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Livres sur le sujet "Power transformers design"

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M, Del Vecchio Robert, ed. Transformer design principles: With applications to core-form power transformers. 2nd ed. Taylor & Francis, 2010.

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M, Del Vecchio Robert, ed. Transformer design principles: With applications to core-form power transformers. Taylor & Francis, 2002.

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Transformers: Analysis, design, and measurement. Taylor & Francis, 2012.

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Hurley, William G. Transformers and inductors for power electronics: Theory, design and applications. Wiley-Blackwell, 2013.

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Gönen, Turan. Electric power transmission system engineering: Analysis and design. John Wiley & Sons, 1988.

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Gönen, Turan. Electric power transmission system engineering: Analysis and design. J. Wiley, 1988.

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IEEE Power Engineering Society. Transformers Committee. West Coast Subcommittee. and IEEE Standards Board, eds. IEEE seismic guide for power transformers and reactors. Institute of Electrical and Electronics Engineers, 1990.

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Georgilakis, Pavlos S. Spotlight on modern transformer design. Springer, 2009.

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Indian Institute of Technology (Kharagpur, India). Dept. of Electrical Engineering., ed. Location of partial discharge in power transformers by computation and measurement of capacitively transmitted voltage surges. Research Scheme on Power, Central Board of Irrigation and Power, 1995.

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Blalock, Thomas J. Transformers at Pittsfield: A history of the General Electric large power transformer plant at Pittsfield, Massachusetts. Gateway Press, 1998.

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Chapitres de livres sur le sujet "Power transformers design"

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Zolfaghari, Alireza. "Stacked Inductors and Transformers." In Low-Power CMOS Design for Wireless Transceivers. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4757-3787-5_3.

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Di Barba, P., M. E. Mognaschi, A. Savini, and J. Turowski. "Cost-Effective Optimal Design of Screens in Power Transformers." In Computer Engineering in Applied Electromagnetism. Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3169-6_7.

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Al-Abadi, Ali, Ahmed Gamil, and Franz Schatzl. "Optimization of Magnetic Shunts Towards Efficient and Economical Power Transformers Design." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_2.

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Erickson, Robert W., and Dragan Maksimović. "Transformer Design." In Fundamentals of Power Electronics. Springer US, 2001. http://dx.doi.org/10.1007/0-306-48048-4_15.

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Erickson, Robert W., and Dragan Maksimović. "Transformer Design." In Fundamentals of Power Electronics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43881-4_12.

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Erickson, Robert W. "Transformer Design." In Fundamentals of Power Electronics. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-7646-4_14.

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Zhu, Fang, and Baitun Yang. "Testing." In Power Transformer Design Practices. CRC Press, 2021. http://dx.doi.org/10.1201/9780367816865-12.

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Zhu, Fang, and Baitun Yang. "Core." In Power Transformer Design Practices. CRC Press, 2021. http://dx.doi.org/10.1201/9780367816865-3.

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Zhu, Fang, and Baitun Yang. "Load Loss." In Power Transformer Design Practices. CRC Press, 2021. http://dx.doi.org/10.1201/9780367816865-7.

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Zhu, Fang, and Baitun Yang. "Insulation." In Power Transformer Design Practices. CRC Press, 2021. http://dx.doi.org/10.1201/9780367816865-5.

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Actes de conférences sur le sujet "Power transformers design"

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White, A. "Design of high voltage power transformers." In 15th IET International School on High Voltage Engineering and Testing 2008. IEE, 2008. http://dx.doi.org/10.1049/ic:20080537.

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Beiranvand, Hamzeh, Esmaeel Rokrok, Behrooz Rezaeealam, and Amit Kumar. "Optimal design of medium-frequency transformers for solid-state transformer applications." In 2017 8th Power Electronics, Drive Systems & Technologies Conference (PEDSTC). IEEE, 2017. http://dx.doi.org/10.1109/pedstc.2017.7910407.

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Al-Abadi, A., A. Gamil, and F. Schatzl. "Optimum Shielding Design for Losses and Noise Reduction in Power Transformers." In 2019 6th International Advanced Research Workshop on Transformers (ARWtr). IEEE, 2019. http://dx.doi.org/10.23919/arwtr.2019.8930176.

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Shotts, Zac, Frank Rose, Steve Merryman, and Ray Kirby. "Design Methodology for Dual Resonance Pulse Transformers." In 2005 IEEE Pulsed Power Conference. IEEE, 2005. http://dx.doi.org/10.1109/ppc.2005.300516.

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Paffrath, Meinhard, Yayun Zhou, Yiqing Guo, and Harald ErtL. "Interactive winding geometry design of power transformers." In 2018 4th International Conference on Optimization and Applications (ICOA). IEEE, 2018. http://dx.doi.org/10.1109/icoa.2018.8370494.

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Di Capua, Giulia, and Nicola Femia. "Geometric form Factors-Based Power Transformers Design." In 2018 15th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD). IEEE, 2018. http://dx.doi.org/10.1109/smacd.2018.8434889.

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Dey, Anshuman, Navid Shafiei, Rahul Khandekar, Wilson Eberle, and Ri Li. "Improving Thermal Performance of High Frequency Power Transformers using Bobbinless Transformer Design." In 2020 19th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm). IEEE, 2020. http://dx.doi.org/10.1109/itherm45881.2020.9190320.

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Prabhu, D. R., and D. L. Taylor. "Synthesis of Systems From Specifications Containing Orientations and Positions Associated With Flow Variables." In ASME 1989 Design Technical Conferences. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/detc1989-0047.

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Abstract A class of systems can be specified by a set of constant input-output power variables with generalized flow variables having associated orientations and positions. This paper presents a method for generating conceptual parametric designs. A quasi-decoupled approach is taken to solve the problem. A hierarchy of considerations of magnitude, orientation and position transforms is established. Orientation and position transformers are introduced in each domain. A solution to the “vector” problem is obtained by augmenting the “scalar” solution using vector transformers.

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Yeh, Chih-Shen, and Jih-Sheng Lai. "A Study on High Frequency Transformer Design in Medium-voltage Solid-state Transformers." In 2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT). IEEE, 2018. http://dx.doi.org/10.1109/acept.2018.8610778.

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Gradzki, P. M., M. M. Jovanovic, and F. C. Lee. "Computer-aided design for high-frequency power transformers." In Applied Power Electronics Conference and Exposition. IEEE, 1990. http://dx.doi.org/10.1109/apec.1990.66427.

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Rapports d'organisations sur le sujet "Power transformers design"

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Makowski, Nathanael. Proposal and Analysis of Demagnetization Methods of High Voltage Power System Transformers and Design of an Instrument to Automate the Demagnetization Process. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.431.

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Broverman, A. Y. Optimum transformer design for a pulsed power system. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/5508881.

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Rodríguez Burgos, Ojel L. Necessity Has Triumphed over Desire. Puerto Rico Institute for Economic Liberty, 2022. http://dx.doi.org/10.53095/13582004.

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Liberalism is the political doctrine that built and dominates our modern world; yet the liberalism of desire that fostered the construction of this world has been transformed into a liberalism of necessity—a liberalism that constructs politics as a dichotomy between oppressors and victims. This kind of politics requires the power of the State to save individuals from victimhood; however, only the individual acting freely can mitigate their suffering.

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Mazarakis, Michael Gerrassimos, and Kenneth William Struve. Conceptual design for a linear-transformer driver (LTD)-based refurbishment and upgrade of the Saturn accelerator pulse-power system. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/894744.

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