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Journal articles on the topic 'Double winding transformer'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Junejo, A. K., M. A. Koondhar, M. A. Memon, I. A. Channa, and S. A. A. S. Bukhari. "Classification of Voltage Sag Propagation under Double Line to Ground Fault on a Low Voltage Distribution Power Network." Engineering, Technology & Applied Science Research 11, no. 2 (2021): 6949–55. http://dx.doi.org/10.48084/etasr.4021.

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The key issue of the voltage-sag propagation on the different types of winding connections for the low voltage transformer in the distribution power network is considered in this study. The issues of voltage sag propagation depend upon the type of asymmetrical fault and the connection of the transformer windings. In this paper, the double line to ground fault is adopted for the voltage sag characterization. The depiction of the sage propagation is an outcome of the zero sequence components. Voltage sag propagation detection can be used to improve the power quality of the system. The obtained r

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2

Prishchepov, M. A., A. I. Zelenkevich, and V. M. Zbrodyga. "Advanced power transformer with improved parameters for rural electrical networks." Proceedings of the National Academy of Sciences of Belarus. Agrarian Series 59, no. 3 (2021): 366–77. http://dx.doi.org/10.29235/1817-7204-2021-59-3-366-377.

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The problem of power quality supply is relevant for rural electrical networks, due to long distance and branching, as well as connection of a large number of single-phase and non-linear loads. Asymmetry of electrical loads causes voltage asymmetry, which adversely affects the operation of all elements of the electrical system, causing additional power losses, reducing the service life of electrical equipment and its economic performance, as well as reliability of operation of individual electrical equipment and power supply system as a whole. Reduction of voltage asymmetry can be ensured by ra

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3

Sheng, Zhong. "DOUBLE WINDING TRANSFORMER ARTIFICIAL INTELLIGENCE VOLTAGE REGULATION COMPENSATION ALGORITHM." IOP Conference Series: Materials Science and Engineering 631 (November 7, 2019): 032004. http://dx.doi.org/10.1088/1757-899x/631/3/032004.

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4

Bezyazychny, Vladimir, Sergey Kostinsky, and Anatoly Troitsky. "Determination of Error of Loss Calculations In Double Wound Transformers Using L-Shaped Substitution Scheme By Conditional Method Constant Coefficients." Известия высших учебных заведений. Электромеханика 64, no. 1 (2021): 101–7. http://dx.doi.org/10.17213/0136-3360-2021-1-101-107.

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When calculating the modes of electric networks, an L-shaped circuit is used to replace one phase of the transformer with bringing its parameters to high voltage (HV), neglecting losses in the HV winding. More precisely, they can be taken into account using a T-shaped substitution scheme. In order to determine the error of the use of the L-shaped scheme in comparison with the use of the T-shaped scheme, the method of conditionally constant coefficients (CPC) was used, which was adapted to calculations using the L-shaped substitution scheme. By the method of the CPC, studies of the modes of the

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5

Hu, Daoyu, Zhuyong Li, Zhiyong Hong, and Zhijian Jin. "Analysis of leakage field and current non-uniformity for HTS transformer windings using three dimension coupled field-circuit approach." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 1 (2017): 320–31. http://dx.doi.org/10.1108/compel-04-2016-0150.

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Purpose The purpose of this paper is to analyze the influence of different types of winding configurations on the distribution of leakage field and branch currents for a 330-kVA high-temperature superconducting (HTS) transformer winding. Design/methodology/approach A three-dimensional electromagnetic model coupled with a circuit model validated by an experiment is developed to calculate the leakage field and current uniformity under four different types of secondary winding configurations. The four types of gaps between secondary windings are uniform gap, arithmetic progression (AP) gap, six s

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6

Moghaddam, Ali Farzan, and Alex Van den Bossche. "A Single Transformer for Active Cell Equalization Method of Lithium-Ion Batteries with Two Times Fewer Secondaries than Cells." Electronics 8, no. 9 (2019): 951. http://dx.doi.org/10.3390/electronics8090951.

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In this paper, the concept of active cell-balancing technique, by using a multiple-outputs double-forward converter for lithium-ion (Li-ion) batteries, is investigated. It controls two times more cells than secondaries, and it equalizes eight cells in a series. In this method, four secondaries can reasonably be wound with the same back electromotive force (EMF). This means a low pin count on the transformer and a low bill of materials (BOM). The bridge uses four N-channel MOSFETs as switches, which means two times fewer transistors than cells, resulting in fewer switching losses. This scheme i

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7

Han, Fang Xu, Yan Li, Xin Sun, and Longnv Li. "Calculation of Leakage Magnetic Field and Short-Circuit Impedance of Power Transformer." Advanced Materials Research 986-987 (July 2014): 1767–70. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1767.

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The leakage magnetic field and equivalent circuit model of OLTC double-winding power transformer has been established by electromagnetic field Finite Element analysis software. The method of field-circuit coupled method has been used to calculate its magnetic field leakage, the short circuit impedance obtained by the calculation of formula and compared with the experimental data. At the same time, based on the calculation method for the Visual Basic language as a tool for MAGNET software for secondary development, obtain the software to calculate the short-circuit impedance of power transforme

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8

Stewart, J. R., L. J. Oppel, G. C. Thomann, T. F. Dorazio, and R. V. Rebbapragada. "Transformer winding selection associated with reconfiguration of existing double circuit line to six-phase operation." IEEE Transactions on Power Delivery 7, no. 2 (1992): 979–85. http://dx.doi.org/10.1109/61.127107.

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9

Zhang, Haijun, Shuhong Wang, Dongsheng Yuan, and Xi Tao. "Double-Ladder Circuit Model of Transformer Winding for Frequency Response Analysis Considering Frequency-Dependent Losses." IEEE Transactions on Magnetics 51, no. 11 (2015): 1–4. http://dx.doi.org/10.1109/tmag.2015.2442831.

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10

Han, Tae-Hee, and Sung-Hun Lim. "Analysis of Current-Limiting Characteristics of Transformer-Type SFCL with Additional Coupled Secondary Winding Through Its Double Quench." Transactions on Electrical and Electronic Materials 19, no. 4 (2018): 267–71. http://dx.doi.org/10.1007/s42341-018-0036-6.

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11

Kostinskiy, Sergey, Daniel Shaikhutdinov, and Nuri Narakidze. "Loss Counter in Power Double Winding Transformers Implementing the Method of Conditionally Constant Coefficients in Online Mode Using the Information Platform." Известия высших учебных заведений. Электромеханика 63, no. 5 (2020): 79–85. http://dx.doi.org/10.17213/0136-3360-2020-5-79-85.

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The article describes the developed loss counter in power double-winding transformers of distribution net-works. The principle of operation of the proposed measuring unit of the loss counter is considered on the exam-ple of one channel for measuring current and voltage in accordance with the above functional scheme. The ap-pearance and main characteristics of the loss counter are given. The main characteristics of the developed loss counter are confirmed by the adjustment Protocol based on the results of measurements in the FBU «Rostov CSM» and are at the level of existing characteristics of e

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12

Zhang, Tianyi. "Based on The Comparative Study of The Economic Load Coefficient of a Double-Winding Transformer in Operation in A Certain Area." IOP Conference Series: Materials Science and Engineering 612 (October 19, 2019): 042069. http://dx.doi.org/10.1088/1757-899x/612/4/042069.

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13

Han, Tae-Hee, and Sung-Hun Lim. "Analysis on Power Consumption and Accumulated Energy According to Resistance of Superconducting Element and Winding Current of Transformer Type SFCL Using Double Quench." Journal of the Korean Institute of Electrical and Electronic Material Engineers 29, no. 10 (2016): 630–34. http://dx.doi.org/10.4313/jkem.2016.29.10.630.

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14

Yin, Meiying, Yong Zhao, Zhuyong Li, et al. "A Study on a Single-Phase HTS Transformer with a Cylindrical Central Iron Core." MATEC Web of Conferences 228 (2018): 03001. http://dx.doi.org/10.1051/matecconf/201822803001.

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During the past decade, a number of high temperature superconducting (HTS) transformer prototypes have been designed, and the majority of them are full-core transformers and air-core transformers. However, in this study, we proposed a new type of HTS transformer, where the iron core is different in that the limbs and connecting yokes are absent. To investigate the performance of this type of HTS transformer, we design and fabricate a single-phase HTS partial core transformer prototype using the secondary generation (2G) HTS GdBCO wires. The iron core is at room temperature, and the windings ar

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15

Ibrahim, Dogan. "Message from Editor." Global Journal of Computer Sciences: Theory and Research 8, no. 2 (2018): I. http://dx.doi.org/10.18844/gjcs.v8i2.3637.

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Message from Editor Dear Readers, It is a great honor for us to publish Volume 8, Issue 2 of Global Journal of Computer Sciences: Theory and Research. Global Journal of Computer Sciences: Theory and Research (GJCS) is an international online journal for scientists and professionals involved in all aspects of computer sciences. This journal serve s as an international platform that fosters theoretical and practical issues and new applications for all scientists and professionals from the field of computer sciences including original research and innovative applications from al

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16

Mingjia, Li, Kang Qiang, Chang Anbi, Cao Shaoyun, and Zhang Yonghui. "Physical Design of a 300kV Double Windings Pulse Transformer." IEEJ Transactions on Fundamentals and Materials 124, no. 10 (2004): 927–30. http://dx.doi.org/10.1541/ieejfms.124.927.

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17

Seungwook Lee, Hee Joon Lee, Gueesoo Cha, et al. "Test results of a three phase HTS transformer with double pancake windings." IEEE Transactions on Appiled Superconductivity 12, no. 1 (2002): 808–11. http://dx.doi.org/10.1109/tasc.2002.1018524.

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18

Hernández-Mayoral, Emmanuel, Reynaldo Iracheta-Cortez, Vincent Lecheppe, and Oscar Alfredo Jaramillo Salgado. "Modelling and Validation of a Grid-Connected DFIG by Exploiting the Frequency-Domain Harmonic Analysis." Applied Sciences 10, no. 24 (2020): 9014. http://dx.doi.org/10.3390/app10249014.

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Wind Energy Conversion Systems (WECS) based on a Doubly-Fed Induction Generator (DFIG) represent the most common configuration employed in wind turbines. These systems involve injecting harmonic currents toward an electrical grid from a back-to-back power converter, potentially creating voltage distortions. To assess this phenomenon, a case study of a 3 kW DFIG-based wind turbine connected to the electrical grid is presented for analysis in the harmonic domain. Initially, a DFIG-based load flow analysis for determining the operating conditions is tackled at the fundamental frequency. Then, the

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19

Wang, Y. S., X. Zhao, H. D. Li, et al. "Development of Solenoid and Double Pancake Windings for a Three-Phase 26 kVA HTS Transformer." IEEE Transactions on Appiled Superconductivity 14, no. 2 (2004): 924–27. http://dx.doi.org/10.1109/tasc.2004.830319.

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20

Wu, Xinke, Hui Chen, Junming Zhang, Fangzheng Peng, and Zhaoming Qian. "Interleaved Phase-Shift Full-Bridge Converter With Transformer Winding Series–Parallel Autoregulated (SPAR) Current Doubler Rectifier." IEEE Transactions on Power Electronics 30, no. 9 (2015): 4864–73. http://dx.doi.org/10.1109/tpel.2014.2362941.

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21

Pan, Lei, He Xu Sun, Lan Fang Fu, Bin Liu, Ran Gao, and Bei Bei Wang. "Research on TZSI Control Method." Advanced Materials Research 773 (September 2013): 51–57. http://dx.doi.org/10.4028/www.scientific.net/amr.773.51.

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In transformer-Z-source inverters (TZSI), the impedance networks consist of a transformer and one capacitor. While maintaining the main features of traditional Z-source network, the new networks exhibit some unique advantages, such as the increased voltage gain and reduced voltage stress in the voltage-fed TZSI, when the turns ratio of the transformer windings is over 1. This paper contributes to the ac small signal modeling and analysis of TZSI in continuous conduction mode. The ac small signal model considers the dynamics introduced by network uniquely contained in TZSI. And a double loop co

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22

Antipov, G. V., V. Yu Gorshunov, V. N. Malinovskii, A. P. Sklyarov, and N. N. Khublarov. "System for diagnosing the mechanical condition of the windings of high-power double-wound transformers." Measurement Techniques 39, no. 9 (1996): 950–54. http://dx.doi.org/10.1007/bf02369847.

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23

Verma, Vikrant, Kadam Sheoran, Priyajit Dash, and Dr Vivek Kumar. "MODELLING AND ANALYZING ELECTROMAGNETIC SHORT CIRCUIT FORCES IN SINGLE AND DOUBLE HELICAL WINDINGS OF TRANSFORMER USING FINITE ELEMENT METHOD." INTERNATIONAL JOURNAL OF RECENT TRENDS IN ENGINEERING & RESEARCH 6, no. 6 (2020): 15–21. http://dx.doi.org/10.23883/ijrter.2020.6041.djfwp.

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24

Г. О., ШЕЇНА. "Investigation of overvoltage in electrical networks." Journal of Electrical and power engineering 24, no. 1 (2021): 46–50. http://dx.doi.org/10.31474/2074-2630-2021-1-46-50.

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The paper considers the processes that occur in power lines and power transformers at atmospheric and switching overvoltages. Atmospheric overvoltages are divided into two types: direct, which occur due to a direct lightning strike; and induction - occur at any switching. Direct overvoltages reach values sufficient to cover the insulation of any voltage class. Protection of power transmission lines from them - suspension of grounded lightning protection cables, protection of substation equipment - installation of lightning rods. It is important to study the wave processes in power lines that o

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25

Shukla, Ajay Kumar, and Anil Kumar Kurchania. "Output Power Stability for Wind Turbine by using two Fault Detection Technique and PID – Fuzzy Controller in the Doubly fed Induction Generator." International Journal of Engineering and Advanced Technology 11, no. 1 (2021): 37–40. http://dx.doi.org/10.35940/ijeat.f3067.1011121.

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The generation of electricity through a wind turbine system is rapidly increasing. Generation of an electricity form a wind turbine is one of the preeminent renewables sources of energy as it is easily available. In many wind farms, the speed of wind is variable due to which achieving stable power output and fault detection is one of the challenges. This objective can be achieved by a doubly fed induction generator (DFIG) along with the use of a fuzzy -PID controller and two fault detection technique in WTs. This Paper shows an investigation of the fault’s detection and improvement in the DFIG

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26

Brañas, Christian, Juan C. Viera, Francisco J. Azcondo, Rosario Casanueva, Manuela Gonzalez, and Francisco J. Díaz. "Battery Charger Based on a Resonant Converter for High-Power LiFePO4 Batteries." Electronics 10, no. 3 (2021): 266. http://dx.doi.org/10.3390/electronics10030266.

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A new battery charger, based on a multiphase resonant converter, for a high-capacity 48 V LiFePO4 lithium-ion battery is presented. LiFePO4 batteries are among the most widely used today and offer high energy efficiency, high safety performance, very good temperature behavior, and a long cycle life. An accurate control of the charging current is necessary to preserve the battery health. The design of the charger is presented in a tight correlation with a battery model based on experimental data obtained at the laboratory. With the aim of reducing conduction losses, the general analysis of the

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27

Зайцев, Борис Филиппович, Татьяна Владимировна Протасова, Дмитрий Васильевич Клименко, Дмитрий Васильевич Акимов та Владимир Николаевич Сиренко. "ДИНАМИЧЕСКИЙ АНАЛИЗ КОМПОЗИТНОГО ОБТЕКАТЕЛЯ РАКЕТЫ ПРИ ОТДЕЛЕНИИ С УЧЕТОМ РАССЛОЕНИЯ СТРУКТУРЫ". Aerospace technic and technology, № 8 (31 серпня 2020): 19–26. http://dx.doi.org/10.32620/aktt.2020.8.03.

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The dynamic processes in the rocket fairing when the pyrotechnic separation system is triggered are considered. The fairing construction is mixed and includes composite and metal elements. The main composite construction element is a fiberglass shell with regular and irregular winding zones. The speed acceleration required to separate the fairing occurs under the action of impulse pressure from the powder gases in the pyrotechnic system. The displacement of the fairing is made up of displacements of the movement as a rigid whole along its axis and vibrations caused by deformations. The calcula

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28

Zharkov, Yu I., N. A. Popova, and E. P. Figurnov. "Accounting power supply schemes for traction substations in the calculation of short circuits in the AC traction network." Vestnik of the Railway Research Institute 78, no. 1 (2019): 10–18. http://dx.doi.org/10.21780/2223-9731-2019-78-1-10-18.

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When calculating short-circuit currents in the AC traction network, it is assumed that each of the traction substations receives power from uncoupled external power supply sources with known resistances. In some cases, especially when powering a group of traction substations from a high-voltage power line of a longitudinal power supply, the external power supply system affects not only the magnitude of short-circuit currents, but also their redistribution between adjacent traction substations of the interstation area where this circuit is considered. Such unrecorded redistribution can have a n

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29

Bhalla, Deepika. "Analyzing Short Circuit Forces in Transformer for Double Layer Helical LV Winding using FEM." International Journal of Performability Engineering, 2018. http://dx.doi.org/10.23940/ijpe.18.03.p3.425433.

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30

"Fire-Fly Algorithm Based ANN Classification of Power Transformer Faults." International Journal of Innovative Technology and Exploring Engineering 9, no. 4 (2020): 1880–84. http://dx.doi.org/10.35940/ijitee.f4589.049620.

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Monitoring and estimating the states of the transformer during faulted phase condition is essential to continuity of supply. Varied techniques are proposed for faulted phase detection to improve condition assessment. In this paper, we propose a novel method to detect and classify power transformer faults using wavelet transform Multi Resolution Analysis (MRA) as feature extracted parameter vector and Fire-Fly Algorithm (FFA) based Artificial Neural network training as classification method. The observed Dissolved Gas Analysis (DGA) waveform data is analyzed with wavelet transforms (WT) to iden

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31

"SURGE VOLTAGE DISTRIBUTION IN A TRANSFORMER WINDING MODEL FOR FAST RISING DOUBLE EXPONENTIAL SWITCHING SURGES." International Journal of Advance Engineering and Research Development 4, no. 09 (2017). http://dx.doi.org/10.21090/ijaerd.39458.

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32

Pramanik, Saurav, Aravind Ganesh, and V. S. B. Chaitanya Duvvury. "Double-End Excitation of A Single Isolated Transformer Winding: An Improved Frequency Response Analysis for Fault Detection." IEEE Transactions on Power Delivery, 2021, 1. http://dx.doi.org/10.1109/tpwrd.2021.3067863.

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33

Mustafayev, Rauf Ismail, and Laman Hasan Hasanova. "Simplification of Mathematical Model of Double Fed Asynchronous Machine." European Journal of Electrical Engineering and Computer Science 1, no. 3 (2017). http://dx.doi.org/10.24018/ejece.2017.1.3.11.

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Double Fed Asynchronous Machines in (DFAM) recent years have found wide application both as generators mainly in renewable energy sources (wind power, small hydropower), and as a motors embedded in various electric drives. In order to study the static and dynamic modes of operation of these machines as one of the most effective methods - the method of mathematical modeling is widely used. It was found that the algebraic-differential equations that make up the mathematical model of double fed induction machine are expediently represented in the d and q axes rotating with the rotor speed of the

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34

Soldatov, V. A., and V. S. Zaharov. "Determination of the fault location in a 35 kV network with a three-winding supply transformer for double-sided voltage and current measurement." TRENDS IN THE DEVELOPMENT OF SCIENCE AND EDUCATION, 2020. http://dx.doi.org/10.18411/lj-09-2020-23.

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35

"A review about Zig Zag Connections in Transformers." Borneo Journal of Sciences and Technology, January 31, 2019, 36–40. http://dx.doi.org/10.35370/bjost.2019.1.1-08.

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Whenever, we think of three phase transformer connections, we think straightaway either about star connected transformer or delta connected transformers. A great majority of polyphase transformers are either star connected or connected in delta. In either case, the connection is symmetrical or balanced. In this paper we wish to explore about zig zag windings being used as earthing transformers and the effect of short circuit current. Double zig zag windings is also dealt here.

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36

Goncalves de Oliveira, Janaína, Johan Lundin, Juan de Santiago, and Hans Bernhoff. "A Double Wound Flywheel System under Standard Drive Cycles: Simulations and Experiments." International Journal of Emerging Electric Power Systems 11, no. 4 (2010). http://dx.doi.org/10.2202/1553-779x.2487.

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Flywheel systems are attractive for use in electric vehicles, being able to efficiently handle the large power needed for acceleration and regenerative braking. A double wound flywheel machine, divided in two different voltage levels by the windings, acting like a rotating transformer, is studied.The flywheel stator windings have two sides: a low voltage side connected to the battery and a high voltage side connected to the wheel motor. The load variations on the high voltage side have minimal affect on the low voltage side of the system, in which the speed control of the machine is performed.

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37

McGillivray, Glen. "Nature Transformed: English Landscape Gardens and Theatrum Mundi." M/C Journal 19, no. 4 (2016). http://dx.doi.org/10.5204/mcj.1146.

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IntroductionThe European will to modify the natural world emerged through English landscape design during the eighteenth century. Released from the neo-classical aesthetic dichotomy of the beautiful and the ugly, new categories of the picturesque and the sublime gestured towards an affective relationship to nature. Europeans began to see the world as a picture, the elements of which were composed as though part of a theatrical scene. Quite literally, as I shall discuss below, gardens were “composed with ‘pantomimic’ elements – ruins of castles and towers, rough hewn bridges, Chinese pagodas an

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