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Journal articles on the topic 'Impulse current generator'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Quyen, Anh Huy, Hung Manh Nguyen, and Minh Van Ta. "ADVANCED LIGHTNING CURRENT GENERATORS." Science and Technology Development Journal 14, no. 4 (2011): 85–91. http://dx.doi.org/10.32508/stdj.v14i4.2011.

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Lightning current impulse circuit researches have used various schematics for diverse impulses, which makes several problems for lightning current impulse generator fabrication with a suitable cost. In addition, errors of several lightning current impulse math models have not met the standards. This work presents solutions to determination of parameters for a specific lightning current impulse circuit and a lightning current impulse math model which is in Matlab environment with high accuracy.

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2

Gregory, J. E., D. L. Morgan, and U. Proske. "Site of impulse initiation in tendon organs of cat soleus muscle." Journal of Neurophysiology 54, no. 6 (1985): 1383–95. http://dx.doi.org/10.1152/jn.1985.54.6.1383.

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A continuing controversy surrounds the question of whether Golgi tendon organs are examples of receptors in which impulses may be generated at more than one site. This paper reports a systematic examination of a number of models incorporating single or multiple impulse generators and of the compatibility of their predictions with experimental observations. Two phenomena, in particular, that must be accounted for are nonlinear summation and cross-adaptation. When two motor units each with a direct effect on the tendon organ are stimulated together, the rate of discharge is greater than either i

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3

Yevgeniy, Trotsenko, Brzhezitsky Volodymyr, Protsenko Olexandr, and Haran Yaroslav. "Simulation of impulse current generator for testing surge arresters using frequency-dependent models." Technology audit and production reserves 1, no. 1(57) (2021): 25–29. https://doi.org/10.15587/2706-5448.2021.225492.

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<em>The object of research is the equivalent circuit of an impulse current generator designed for testing surge arresters. Calculation of the impulse current generator parameters when discharging a capacitor bank to a complex nonlinear load is a difficult task for an analytical solution. Until now, the application of surge arrester frequency-dependent models was limited to the problems of overvoltage computation. Surge arrester frequency-dependent models can predict the residual voltage with high accuracy. This is the reason to consider that surge arrester frequency-dependent models can be use

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4

Muhammad, Usman, Fazlul Aman, Normiza Mohamad Nor, Nurul Nadia Ahmad, and Miszaina Osman. "Influences of impulse generators on the impulse characteristics of grounding systems." Bulletin of Electrical Engineering and Informatics 14, no. 3 (2025): 1613–23. https://doi.org/10.11591/eei.v14i3.8467.

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It is important to ensure the effectiveness of the experimental test set up and to accurately characterize grounding systems under high impulse conditions, the study on the effect of impulse generator is therefore needed. As with other experimental work, the test results may be influenced not only by the characteristics of the test load under study, but also the test arrangement, rating of the impulse generator and transducers. In this work, sources of this overshoot/spike observed in voltage and current traces of 1-rod, 3-rod, and 4-rod electrodes subjected to two impulse current generators o

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Trotsenko, Yevgeniy, Volodymyr Brzhezitsky, Olexandr Protsenko, and Yaroslav Haran. "Simulation of impulse current generator for testing surge arresters using frequency-dependent models." Technology audit and production reserves 1, no. 1(57) (2021): 25–29. http://dx.doi.org/10.15587/2706-5448.2021.225492.

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The object of research is the equivalent circuit of an impulse current generator designed for testing surge arresters. Calculation of the impulse current generator parameters when discharging a capacitor bank to a complex nonlinear load is a difficult task for an analytical solution. Until now, the application of surge arrester frequency-dependent models was limited to the problems of overvoltage computation. Surge arrester frequency-dependent models can predict the residual voltage with high accuracy. This is the reason to consider that surge arrester frequency-dependent models can be used fo

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6

Grainys, Audrius. "HIGH MAGNETIC FIELD GENERATOR OF SUB-MICROSECOND DURATION / MIKROSEKUNDINĖS TRUKMĖS MAGNETINIŲ IMPULSŲ GENERATORIUS." Mokslas - Lietuvos ateitis 4, no. 1 (2012): 63–66. http://dx.doi.org/10.3846/mla.2012.14.

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The article describes the possibility of generating a micro and sub-microsecond magnetic impulse reaching 1–10 T, investigates various configurations of microcoils and discusses the principal circuit of a magnetic field impulse generator of microsecond duration. The transient processes of current, temperature and magnetic field are calculated applying the finite element method. Santrauka Nagrinėjamas mikrosekundinės ir submikrosekundinės trukmės magnetinių impulsų, siekiančių 1–10 T, generavimas. Pateikta mikrosekundės trukmės magnetinių impulsų generatoriaus, kuris susideda iš mikroritės, maž

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Mottaeva, Angela B., Irina A. Smirnova, Evgeny A. Konnikov, and Elena E. Sharafanova. "FUZZY-SET APPROACH TO ASSESSING TRANSREGIONAL INDUSTRIAL COHERENCE." SOFT MEASUREMENTS AND COMPUTING 3, no. 76 (2024): 35–44. http://dx.doi.org/10.36871/2618-9976.2024.03.003.

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Within the scope of the research, the model is being developed to assess the economic effect of transregional industrial coherence at the current level of transport infrastructure development. The study constitutes a part of the analytical modeling of the cycle for increasing the level of sustainable development in regions, the enterprises of which are included in the target transregional industrial cluster. The resulting parameter of influence is the real impulse, integrally expressed by intermediate impulse flows, formed by subject-generators and reinforced by subject-catalysts in the enviro

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8

Edirisinghe, Mahesh, Raul Montaño, Vernon Cooray, and F. Roman. "Performance Comparison of Varistor Models under High Current Derivative Impulses." International Letters of Chemistry, Physics and Astronomy 11 (September 2013): 40–53. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.11.40.

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Surge protective devices (SPD) testing procedures are mainly performed with standard current pulse types. However, none of these standard current waveforms reproduce the very fast rise time and the large peak current derivatives observed in subsequent return strokes. In the literature there are several mathematical models to represent metal oxide varistor that have been developed based on standard impulse conditions. These models are being used routinely in the analysis of the various electronic circuits under transient conditions. In this paper, a study was conducted to have a performance com

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9

Edirisinghe, Mahesh, Raul Montaño, Vernon Cooray, and F. Roman. "Performance Comparison of Varistor Models under High Current Derivative Impulses." International Letters of Chemistry, Physics and Astronomy 11 (April 2, 2013): 40–53. http://dx.doi.org/10.56431/p-w4ws97.

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Surge protective devices (SPD) testing procedures are mainly performed with standard current pulse types. However, none of these standard current waveforms reproduce the very fast rise time and the large peak current derivatives observed in subsequent return strokes. In the literature there are several mathematical models to represent metal oxide varistor that have been developed based on standard impulse conditions. These models are being used routinely in the analysis of the various electronic circuits under transient conditions. In this paper, a study was conducted to have a performance com

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10

Yudaev, I., R. Kokurin, V. Eviev, B. Belyaeva, E. Sumyanova, and N. Romanyuk. "Usage of high voltage impulse generator to research the process of electropulse destruction of locust larvae in the soil." IOP Conference Series: Earth and Environmental Science 996, no. 1 (2022): 012027. http://dx.doi.org/10.1088/1755-1315/996/1/012027.

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Abstract In accordance with announced technology, a laboratory research complex is needed for researching the influence of electropulse effects on locust larvae (capsules) and identification of the processing modes and construction design required to cause their irreversible (fatal) damage. In this regard, a schematic diagram of a laboratory research complex for electropulse processing has been developed and its structure has been determined. A separate question concerned a source of high voltage and a shaper of high-voltage impulses. A special design of a high-voltage impulse generator has be

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11

Zhang, Chenmeng, Kailin Zhao, Shijun Xie, Can Hu, Yu Zhang, and Nanxi Jiang. "Research on the Time-Domain Dielectric Response of Multiple Impulse Voltage Aging Oil-Film Dielectrics." Energies 14, no. 7 (2021): 1948. http://dx.doi.org/10.3390/en14071948.

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Power capacitors suffer multiple impulse voltages during their lifetime. With the multiple impulse voltage aging, the internal insulation, oil-film dielectric may deteriorate and even fail in the early stage, which is called accumulative effect. Hence, the time-domain dielectric response of oil-film dielectric with multiple impulse voltage aging is studied in this paper. At first, the procedure of the preparation of the tested samples were introduced. Secondly, an aging platform, impulse voltage generator was built to test the accumulative effect of capacitor under multiple impulse voltage. Th

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12

Wijono, Wijono, Zainul Abidin, Waru Djuriatno, Eka Maulana, and Nola Ribath. "Design of 4-stage Marx generator using gas discharge tube." Bulletin of Electrical Engineering and Informatics 10, no. 1 (2021): 55–61. http://dx.doi.org/10.11591/eei.v10i1.1949.

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In this paper, a Marx generator voltage multiplier as an impulse generator made of multi-stage resistors and capacitors to generate a high voltage is proposed. In order to generate a high voltage pulse, a number of capacitors are connected in parallel to charge up during on time and then in series to generate higher voltage during off period. In this research, a 6kV Marx generator voltage multiplier is designed using gas discharge tube (GDT) as an electronic switch to breakdown voltage. The Marx generator circuit is designed to charge the storage capacitor for high impulse voltage and current

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13

Wijono, Abidin Zainul, Djuriatno Waru, Maulana Eka, and Ribath Nola. "Design of 4-stage Marx generator using gas discharge tube." Bulletin of Electrical Engineering and Informatics 10, no. 1 (2021): 55–61. https://doi.org/10.11591/eei.v10i1.1949.

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In this paper, a Marx generator voltage multiplier as an impulse generator made of multi-stage resistors and capacitors to generate a high voltage is proposed. In order to generate a high voltage pulse, a number of capacitors are connected in parallel to charge up during on time and then in series to generate higher voltage during off period. In this research, a 6kV Marx generator voltage multiplier is designed using gas discharge tube (GDT) as an electronic switch to breakdown voltage. The Marx generator circuit is designed to charge the storage capacitor for high impulse voltage and current

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14

Feng, Junwei, Hao Shen, and Dong Liang. "Investigation of lightning ignition characteristics based on an impulse current generator." Ecology and Evolution 9, no. 24 (2019): 14234–43. http://dx.doi.org/10.1002/ece3.5855.

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15

Abdul Ali, Abdul Wali, and Normiza Mohamad Nor. "On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing." Energies 14, no. 9 (2021): 2401. http://dx.doi.org/10.3390/en14092401.

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This paper presents experimental results of high-current impulse tests on six ground electrode configurations. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes, under both positive and negative impulse polarities. The effect of increasing the number of rod electrodes, hence the resistance at DC or steady-state (RDC), on the impulse response of ground electrodes is analysed. From the analysis of the results, it was found that the larger the size of rod electrodes, the less current-dependent Zimpulse becomes. The percentage of reduc

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16

Kongruang, Sasithorn, and Srawut Kleesuwan. "Nutritional Quantification and Shelf Life Analysis of Non-thermal Processed Coconut Juice." E3S Web of Conferences 141 (2020): 02008. http://dx.doi.org/10.1051/e3sconf/202014102008.

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Nonthermal processing methods are attracted by many food and beverage industry because it can kill the microbial contamination under mild temperatures used in thermal processing; They can sustain flavours, essential nutrients, and vitamins undergo minimal changes. The objective of this research was to evaluate nonthermal processing as the high current impulse generator (HCIG) and investigate the reduction the contaminated microorganism in coconut juice under the batch and continuous treatment of HCIG. The physical, biochemical and nutritional changes of treated coconut juice were also investig

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17

He, Guofeng, Le Zhao, Yanfei Dong, Guojiao Li, and Wenjie Zhang. "A Novel VSG Control Strategy for UPS Voltage Source Inverter with Impulsive Load." Energies 15, no. 13 (2022): 4702. http://dx.doi.org/10.3390/en15134702.

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This paper proposes a novel control strategy to alleviate the impulsive current for Uninterruptible Power Supply (UPS), which is designed based on the theory of virtual synchronous generator (VSG) and dynamic switching method. The power quality of UPS will become distortion when the instantaneous impulsive load is imposed on UPS. Especially, the output current of UPS will increase quickly in short time. In order to maintain the uninterrupted output voltage and reduce the distortion of output voltage of UPS under the action of instantaneous impulse load, Dynamic switching method is proposed to

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18

Lopez, Abraham, Haley N. Strong, Kendra I. McGlothen, Dustin J. Hines, and R. Jacob Baker. "A Compact Avalanche-Transistor-Based Pulse Generator for Transcranial Infrared Light Stimulation (TILS) Experiments." Instruments 6, no. 3 (2022): 20. http://dx.doi.org/10.3390/instruments6030020.

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A pulse generator using an avalanche transistor operating in current-mode second breakdown driving a 780 nm laser diode is reported. The laser diode is mounted on the skull of a mouse and used in transcranial infrared light stimulation (TILS) experiments. The output current pulse width is approximately 2 ns in an attempt to generate a true impulse-like optical pulse excitation for the TILS experiments.

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19

Masłowski, Grzegorz, and Sebastian Hajder. "Measurements and Modeling of Long Continuing Current in the Lightning Protection System of a Residential Building." Energies 15, no. 19 (2022): 6862. http://dx.doi.org/10.3390/en15196862.

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Experimental and computer investigations were conducted into long-duration impulse current distribution in the lightning protection system, supplying network, and electrical installation of a test house that was equipped with household appliances. Long-duration impulse currents simulating lightning continuing currents were injected from the unique current generator into the test object. The current distributions in the elements of the test object were measured using current shunts, coaxial cables, and digital oscilloscopes, then they were modeled using the ATP-EMTP software package. The obtain

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20

Eom, Ju-Hong, Sung-Chul Cho, and Tae-Hyung Lee. "Parameters Optimization of Impulse Generator Circuit for Generating First Short Stroke Lightning Current Waveform." Journal of Electrical Engineering and Technology 9, no. 1 (2014): 286–92. http://dx.doi.org/10.5370/jeet.2014.9.1.286.

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21

TSENG, Kuo-Hsiung, Ching-Lin HUANG, Pei-Yu CHENG, and Zih-Ciao WEI. "Development and Evaluation of a Wide Range Impulse Current Generator for Surge Arrester Testing." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E96.A, no. 3 (2013): 713–20. http://dx.doi.org/10.1587/transfun.e96.a.713.

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22

Rugthaicharoencheep, Nattachote, and Jirawat Maigan. "Impacts of Factor Lightning and Surge Protection for Photovoltaic Power Generator on Distribution System." Applied Mechanics and Materials 901 (August 2020): 103–8. http://dx.doi.org/10.4028/www.scientific.net/amm.901.103.

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This research paper presents the analysis of factor lightning protection for photovoltaic power generation. The question of the safety of lightning protection systems in photovoltaic power generation, especially under severe weather conditions such as thunderstorms. Therefore, a simple model of a photovoltaic power generation was developed, which included the arrangement of a conventional photovoltaic panel. The effect of lightning is also simulated by the pattern of lightning currents. It is also found that the size of the panel mounting structure and the point of lightning conduction induce

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23

Roziskulov, S. S., D. V. Vinnichenko, and N. I. Suprunovska. "INTERDEPENDENT TRANSIENT PROCESSES IN CIRCLES OF BIPOLAR DISCHARGE PULSE CURRENT GENERATOR WITH R-L-C LOAD AND LIMITED POSITIVE VOLTAGE FEEDBACK." Tekhnichna Elektrodynamika 2025, no. 3 (2025): 3–10. https://doi.org/10.15407/techned2025.03.003.

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The paper analyzes the interdependent transient processes in the discharge circuits of a bipolar discharge pulse gen-erator (DPG) with R-L-C load and limited positive voltage feedback. The analytical dependence of the value of the ini-tial voltage on the capacitor connected in series with the load on the value of the Q factor of the discharge circuit of the DPG was obtained. The optimal electrical parameters of these circuits have been determined to ensure high dynamic and energy indicators of impulse currents in an electric spark load. It is substantiated that the serial connection of a capac

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24

Ivonin, V. V. "Influence of Nonlinear Processes in Soils on the Impulse Resistance of Grounding Electrodes." Journal of Physics: Conference Series 2096, no. 1 (2021): 012061. http://dx.doi.org/10.1088/1742-6596/2096/1/012061.

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Abstract The article presents the results of laboratory studies of nonlinear processes during the flow of pulsed currents into moistened soil from electrodes modelling grounding devices of electric power facilities. A methodology for studying the pulse parameters of grounding devices has been developed and a laboratory stand and a generator measuring system have been developed on which these investigation were performed. The experiments were carried out on three types of electrodes at voltages of 20 - 50 kV and pulse durations from units to hundreds of microseconds. The article presents the co

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Filik, Kamil, Grzegorz Karnas, Grzegorz Masłowski, Mariusz Oleksy, Rafał Oliwa, and Katarzyna Bulanda. "Testing of Conductive Carbon Fiber Reinforced Polymer Composites Using Current Impulses Simulating Lightning Effects." Energies 14, no. 23 (2021): 7899. http://dx.doi.org/10.3390/en14237899.

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Carbon fiber reinforced polymer (CFRP) composites are lightweight and an increasingly used material with good mechanical properties. In the aviation industry, they are also required to have specific electrical properties that guarantee resistance to the direct and indirect lightning effects. The paper is focused on the description of a test stand and development of a method used to determine the electrical characteristics of conductive CFRP laminate samples with the use of high current impulses of lightning nature. Samples of three laminates (square format with side 30 × 30 cm) with a differen

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26

Wakasa, Sachi A., Seisuke Nishimura, Hiroyuki Shimizu, and Yukinori Matsukura. "Does lightning destroy rocks?: Results from a laboratory lightning experiment using an impulse high-current generator." Geomorphology 161-162 (August 2012): 110–14. http://dx.doi.org/10.1016/j.geomorph.2012.04.005.

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27

Kanjanavirojkul, Parit, Nguyen Ngoc Mai-Khanh, Tetsuya Iizuka, Toru Nakura, and Kunihiro Asada. "Analysis and design of impulse signal generator based on current-mode excitation and transmission line resonator." Analog Integrated Circuits and Signal Processing 97, no. 3 (2018): 457–70. http://dx.doi.org/10.1007/s10470-018-1236-z.

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28

Pan, Honggang, Yunshi Wu, Zhiyuan Pang, Yanming Fu, and Tianyu Zhao. "Shafting Torsional Vibration Analysis of 1000 MW Unit under Electrical Short-Circuit Fault." Applied Sciences 11, no. 19 (2021): 9205. http://dx.doi.org/10.3390/app11199205.

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Taking a 1000 MW turbine generator as the research object, the short-circuit fault in electrical disturbance is analyzed. Since it is very difficult to carry out fault analysis experiments and research on actual systems, simulation analysis is one of the more effective means of electrical fault diagnosis; the simulation’s results approach the actual behavior of the system and are ideal tools for power system analysis, and can provide an empirical basis for practical applications. The short-circuit fault model of the SIMULINK power system is built to analyze the two types of faults of generator

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29

YAMASHITA, Shinichiro, Isamu OHSAWA, and Jun TAKAHASHI. "Study on Fracture Behavior of Carbon Fiber Reinforced Thermoplastics under Artificial Lightning Strike by Impulse Current Generator." Journal of the Japan Society for Composite Materials 40, no. 1 (2014): 17–24. http://dx.doi.org/10.6089/jscm.40.17.

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30

Angga Tata Pradana, I. Putu, Cok Gede Indra Partha, and I. Gusti Ngurah Janardana. "PERANCANGAN PROTOTYPE PLTSA DENGAN TURBIN IMPULS SATU TINGKAT." Jurnal SPEKTRUM 10, no. 4 (2023): 42. http://dx.doi.org/10.24843/spektrum.2023.v10.i04.p6.

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Garbage is a very serious problem in the coastal areas of the beaches in Bali, the management of waste sent from the sea is not maximized. One alternative way of managing waste is using a waste power plant (PLTSa) that can generate electricity. The purpose of this study was to determine the effect of current, torque and power on the PLTSa prototype by designing a single stage impulse turbine, the method used in this study was descriptive quantitative. Tests on the PLTSa prototype used a single-stage impulse turbine with a runner diameter of 44 cm and a total of 75 turbine blades. This prototyp

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Galiullin, Rustam R., and Viktor I. Potapov. "The low power diesel-generator unit with electronically controlled fuel injection." Izvestiya MGTU MAMI 16, no. 2 (2023): 173–81. http://dx.doi.org/10.17816/2074-0530-106005.

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BACKGROUND: Diesel engines, used in generator units, primarily operate in variable loading conditions. Therefore, their technical and economic performance generally deteriorate when the load decreases. It arises from the diesel engine fuel system feature, where pressure and quantity of the fuel, injected into a cylinder, reduces with the load decreasing. As a result, the injection becomes sluggish, the quality of mixing process and combustion becomes worse. AIMS: Improvement of effective indicators of the diesel-generator units with electronically controlled fuel injection. METHODS

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Karthikeyan, R., K. Vijayakumar, and R. Arumugam. "Soft Magnetic Composite Switched Reluctance Generator - Fabrication and Analysis." Advanced Materials Research 383-390 (November 2011): 5516–21. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5516.

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The main objective of this paper is to investigate the suitability of Soft Magnetic Composite (SMC) material SOMOLOY1000 for a Switched Reluctance Generator (SRG) through electromagnetic, thermal and vibration characteristics employing extensive Finite Element Analysis. The fabrication aspects of Soft Magnetic Composite Switched Reluctance Generator (SMC-SRG) using preform material blanks utilizing indigenous machining process have been delineated. The static and transient electromagnetic characteristics have been obtained through the electromagnetic finite element analysis software MagNet6.22

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Ivo Uglešić, Miroslav Křepela, and Viktor Milardić. "Solving EMC problems in the design of new HV test laboratory." Journal of Energy - Energija 59, no. 1-4 (2022): 77–82. http://dx.doi.org/10.37798/2010591-4281.

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The paper deals with solving electromagnetic compatibility (EMC) problems in the design of a new, case study, industrial high voltage test laboratory, intended to be used for testing of transformers and other apparatus up to 550 kV rated voltage. Modern high voltage test facilities are equipped, apart from primary test devices like AC, DC and impulse voltage generators etc., also with sophisticated numerical measuring instruments and informatics technology. Since such devices are sensitive to transient overvoltages, the highest degree of EMC is to be secured. This can be achieved by proper ear

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Predus, M. F., C. M. Muscai, C. Popescu, and C. Hatiegan. "The importance of the metal reinforcement of low voltage cables in the process of identifying defects." Journal of Physics: Conference Series 2540, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1742-6596/2540/1/012011.

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Abstract Regarding the identification of defect in the electrical energy cables, in exploatation, usual or high-performance methods are used, based in particular on the phenomenon of reflection and refraction of the impulse transmitted in the cable, phenomenon generated by the impedance change at the defect location. In order to identify the defect, an important role is played by the existence of a current path on the cable route between the ends of the electrical cable and the place where the defect occurred. In the case of low voltage cables, there are situations where, following the sleeve

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Paophan, Busayapol, Anantawat Kunakorn, Peerawut Yutthagowith, and Kazuo Yamamoto. "Frequency Response Characteristics of Rogowski Coil with Active Integrator for Lightning Measurement." ECTI Transactions on Electrical Engineering, Electronics, and Communications 18, no. 1 (2020): 45–53. http://dx.doi.org/10.37936/ecti-eec.2020181.218885.

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This paper presents frequency response characteristics of a Rogowski coil which is developed with an active integrator. Experiments are performed in a laboratory with a frequency function generator as a source. The frequency responses of the Rogowski coil and the integrator are recorded with both magnitude and phase in order to verify the capability in measuring lightning current waveshapes. For availability in lightning current measurement in the electrical system, the developed Rogowski coil is specifically designed as a clamp on device. The standard lightning current waveshape of the first

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Lu, Hao, Yuhang Chen, Hongchang Li, Chuanxiao Zheng, and Heng Hu. "Experimental Study on The Performance of External Open-Circuit Failure Gas Discharge Tubes under Power-Frequency Follow Currents." Electronics 13, no. 1 (2023): 165. http://dx.doi.org/10.3390/electronics13010165.

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A short-circuit fault in the gas discharge tube (GDT) is one of the latent hazards of electrical equipment. It may cause the ignition of electrical equipment. Therefore, based on the existing GDT, an improved external open-circuit failure gas discharge tube (EOFGDT) which can remove short-circuit (SC) failure is presented in this paper, and its structure and working mechanisms are introduced. This EOFGDT can utilize the combustion and heat transfer of continuous arcs due to SC failures to increase the temperature of its end electrode, so as to induce a solder joint failure, by which the elasti

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Xu, Bo Qiang, and Shu Yi Zhang. "No-Load Grid Connection Control Strategy of Double-Fed Induction Generator in Wind Power Generation System." Applied Mechanics and Materials 707 (December 2014): 325–28. http://dx.doi.org/10.4028/www.scientific.net/amm.707.325.

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A control strategy and implement method for the no-load cutting-in of double-fed induction generator in power system are introduced. The paper analyze the basal principle of DFIG under no-load condition, and build the correspondent mathematical model. Then according to the model, the paper propose a control strategy on the basis of magnetic flux linkage vector orientation control. Using simulation software set up a simulation model. The result of simulation showed that: the no-load grid connection control strategy can effectively keep the stator voltage track the time-varing grid voltage. At t

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Wijono, Maulana Eka, Darmawan Putra Dony, and Djuriatno Waru. "Plasma generator: design of six stage cockcroft-walton voltage multiplier 12 kV for impulse voltage generation." TELKOMNIKA Telecommunication, Computing, Electronics and Control 17, no. 4 (2019): 1890–97. https://doi.org/10.12928/TELKOMNIKA.v17i4.11828.

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Cockcroft-Walton (CW) voltage multiplier is a voltage booster circuit with an array of series-connected only diodes and capacitors. In this research, voltage multiplier is designed to generate voltage up to 12 kV that the modified 6-stage constructed generator. It is designed as circuit charger of storage capacitor (CS) to generate combination wave impulse application which following standard those set in IEC (International Electrotecnical Commission) 61000-4-5 class 4. CS should be charged up to 4 kV according this standard. High impulse voltage and current works repeatedly in a short time, s

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Khatti, Naser, and Massoud Dousti. "A Low Phase Noise LC Quadrature VCO Using Impulse Shaping Based on Gaussian Pulse Generator." Journal of Circuits, Systems and Computers 26, no. 04 (2016): 1750067. http://dx.doi.org/10.1142/s0218126617500670.

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This paper presents a new tail current-shaping technique to improve the phase noise of an LC quadrature VCO (LC-QVCO) based on Gaussian pulse generator (GPG). The GPG makes a narrow pulse from oscillator sinusoidal output and injects it back to gates of tail transistors to reduce the root-mean-square (RMS) value of impulse sensitivity function (ISF) and to improve phase noise. It will be shown that by utilizing a GPG, total phase noise improvement will be as high as 6[Formula: see text]dB. The proposed circuit was designed and simulated by ADS simulator using 0.18[Formula: see text][Formula: s

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Kossowski, Tomasz, and Łukasz Matuszewski. "Non-Real-Time Wireless System for Lightning Effect Measurements." Applied Sciences 11, no. 9 (2021): 4204. http://dx.doi.org/10.3390/app11094204.

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This article presents the results of experimental tests of a measuring system dedicated to the study of lightning phenomena. A wireless non-real-time communication arrangement was used as a prototype to protect the system by overvoltage and electromagnetic noise generated by high-current pulses. All data were collected after analog-to-digital conversion in the RAM of the measuring probe and then transmitted to the recorder after the surge current disappeared. The current generator creates electromagnetic disturbances resulting from its work and those arising from the impulse generated at the o

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Tang, Lingdi, Shouqi Yuan, Yue Tang, and Zhijun Gao. "Performance Characteristics in Runner of an Impulse Water Turbine with Splitter Blade." Processes 9, no. 2 (2021): 303. http://dx.doi.org/10.3390/pr9020303.

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The impulse water turbine is a promising energy conversion device that can be used as mechanical power or a micro hydro generator, and its application can effectively ease the current energy crisis. This paper aims to clarify the mechanism of liquid acting on runner blades, the hydraulic performance, and energy conversion characteristics in the runner domain of an impulse water turbine with a splitter blade by using experimental tests and numerical simulations. The runner was divided into seven areas along the flow direction, and the power variation in the runner domain was analyzed to reflect

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Suwartama Wijaya, I. Made, I. Wayan Arta Wijaya, and I. Gusti Ngurah Janardana. "PENGARUH VARIASI TEKANAN AIR TERHADAP PUTARAN TURBIN DAN DAYA OUTPUT YANG DIHASILKAN PROTOTYPE PLTMH MENGGUNAKAN TURBIN TURGO." Jurnal SPEKTRUM 9, no. 2 (2022): 173. http://dx.doi.org/10.24843/spektrum.2022.v09.i02.p20.

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Turgo turbine|is}one^type^of|impulse^turbine{that{is often used!in MHP (Microhydro Power Plant) which has a high head due to the sharp curvature of the blade. The case in turgo turbines is that{the|head!is?still)incorrect, because:this^type^of{turbine{uses*a!high(head-to<rotate^the^turbine runner. Based on what was{described, it!is^necessary!to”make|a prototype of PLTMH>using turgo turbines, in|”order{to(be)able:to”carry|out air pressure effect tests to obtain maximum output and efficiency in PLTMH using turgo turbines. The quantitative experimental method is carried out by calculating t

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Zhu, Jian-hong, Pengkun Zhang, Xinsong Zhang, Lin Qin, Chengxiang Sun, and Han Li. "Model Predictive Control on Transient Flux Linkage and Reactive Power Compensation of Doubly Fed Induction Wind Generator." International Journal of Energy Research 2024 (March 5, 2024): 1–15. http://dx.doi.org/10.1155/2024/6648691.

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For weak grid scenario with high new energy proportion, large fluctuations of load are prone to cause low-voltage ride through. Moreover, stator transient magnetic flux will cause overvoltage and overcurrent problems in the rotor of doubly fed induction generator. Based on model predictive control, a control strategy for transient flux linkage and reactive power compensation is proposed. Firstly, regarding the issue of reactive power allocation of grid side converters (GSC) and rotor side converters (RSC), an allocation strategy is derived under minimizing winding energy loss on case of low-vo

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Pandwa Putra, Ida Bagus Made, I. Wayan Arta Wijaya, and I. Gusti Ngurah Janardana. "PENGARUH PERUBAHAN JUMLAH SUDU TURBIN TURGO TERHADAP DAYA OUTPUT PADA PROTOTYPE PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH)." Jurnal SPEKTRUM 9, no. 3 (2022): 1. http://dx.doi.org/10.24843/spektrum.2022.v09.i03.p1.

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The increase in demand for electrical energy in Indonesia causes a reduction in conventional fuel reserves. This situation forces people to look for alternative energy sources or commonly callednew and renewable energy (RE). Seeing the geographical condition of the environment in Indonesiawhich has the potential for the development of electrical energy by utilizing the flow of water, it iscalled a Micro Hydro Power Plant (PLTMH). In implementing MHP, one type of impulse turbine canbe used, namely the Turgo turbine. This study focused on knowing the effect of variations in thenumber of blades o

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Yun, Soohyun, та Joonsung Bae. "A Sinusoidal Current Generator IC with 0.04% THD for Bio-Impedance Spectroscopy Using a Digital ΔΣ Modulator and FIR Filter". Electronics 13, № 22 (2024): 4450. http://dx.doi.org/10.3390/electronics13224450.

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This paper presents a highly efficient, low-power, compact mixed-signal sinusoidal current generator (CG) integrated circuit (IC) designed for bioelectrical impedance spectroscopy (BIS) with low total harmonic distortion (THD). The proposed system employs a 9-bit sine wave lookup table (LUT) which is simplified to a 4-bit data stream through a third-order digital delta–sigma modulator (ΔΣM). Unlike conventional analog low-pass filters (LPF), which statically limit bandwidth, the finite impulse response (FIR) filter attenuates high-frequency noise according to the operating frequency, allowing

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Nescoromniy, S., E. Strizhakov, and D. Minko. "Two-stage magnetic-elasto-pulse stamping of thin sheet parts." Journal of Physics: Conference Series 2131, no. 4 (2021): 042057. http://dx.doi.org/10.1088/1742-6596/2131/4/042057.

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Abstract The article substantiates the use of preliminary static loading and subsequent forging force when stamping thin sheet parts of complex shape with an elastic punch. The static load provides a relative deformation of the order of 20– 30% in the processing zone, which guarantees the stability of the position of the workpiece during subsequent pulsed loading. This technique is very important in the manufacture of asymmetric parts with a thickness of 0.01 – 0.3 mm. As a result, the accuracy of the products obtained corresponds to the 7th grade.The article provides a schematic diagram and a

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VOEVODIN, Vadim V., Marina V. SOKOLOVA, Viktor R. SOLOV’YEV, and Nikolay Yu LYSOV. "The Influence of Barrier and Applied Voltage Parameters on the Impulse Surface Discharge Characteristics." Elektrichestvo 11, no. 11 (2020): 17–27. http://dx.doi.org/10.24160/0013-5380-2020-11-17-27.

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The results from an experimental study of impulse surface discharge occurring in an electrode system containing a dielectric plate are presented. On one of its sides, the plate had a corona-producing electrode made of 50 mm thick copper foil grounded through a current shunt for measuring the discharge current. On its other side, the plate had a high-voltage electrode, to which the voltage from a pulse generator was applied. The article presents the results from measurements of the initial voltage and the sizes of the surface discharge area in air when applying single voltage pulses with differ

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Filik, Kamil, Sebastian Hajder, and Grzegorz Masłowski. "Multi-Stroke Lightning Interaction with Wiring Harness: Experimental Tests and Modelling." Energies 14, no. 8 (2021): 2106. http://dx.doi.org/10.3390/en14082106.

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This paper presents the obtained results of experimental tests and modelling of lightning disturbances that were propagated in a model of aircraft cable bundle and caused by multiple lightning return-strokes interactions. The work is a continuation of previous research, which was concerned mainly with the interaction of lightning discharge with a single return-stroke. The section of the cable harness arranged above the metal plate was investigated. In one of its wires, a multiple-stroke current representing indirect lightning effects was injected from an impulse current generator dedicated to

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Saiapina, Inna, Mykhailo Babaiev, and Olha Аnanіevа. "Reducing noise influence on an audio frequency track circuit." MATEC Web of Conferences 294 (2019): 03015. http://dx.doi.org/10.1051/matecconf/201929403015.

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In connection with electromagnetic interference influence on the track circuits, the purpose of the research is finding the means to increase the noise immunity of an audio frequency track circuit. The authors propose a new engineering solution, which enables reducing the effect of noises on the input of the track receiver in the intervals between signal current pulses. The proposed noise-immune audio frequency track circuit is based on inserting a delay line, an adjustable single-pulse generator and a controlled electronic switch into the existing audio frequency track circuit equipment. To a

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Saputra, I. Gusti Ngurah, Lie Jasa, and I. Wayan Arta Wijaya. "PENGARUH JUMLAH SUDU PADA PROTOTYPE PLTMH DENGAN MENGGUNAKAN TURBIN PELTON TERHADAP EFISIENSI YANG DIHASILKAN." Jurnal SPEKTRUM 7, no. 4 (2020): 161. http://dx.doi.org/10.24843/spektrum.2020.v07.i04.p21.

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Turbine is a component that plays an important role as an energy converter to be ableto generate electricity in the Micro Hydro Power Plant (MHP). The turbine used in this prototypeis a Pelton tubine. The Pelton turbine is a type of impulse turbine consisting of two blades as aprelude receiver for water jets from the nozzles by utilizing high water heads even though thewater discharge is small. This research will discuss the effect of the number of blades on therotation produced by the Pelton turbine and generator so that it can be seen the voltage,current, power produced that affects the torq

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