Thematische Bibliographien / Capacitive-voltage characteristics

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Auswahl der wissenschaftlichen Literatur zum Thema „Capacitive-voltage characteristics“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 2. Februar 2022

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Zeitschriftenartikel zum Thema "Capacitive-voltage characteristics"

Brzhezitsky, V. O., Y. O. Haran, A. O. Derzhuk, O. R. Protsenko, Y. O. Trotsenko und M. M. Dixit. „Ultimate effect of non-identity of capacitive elements of high-voltage arm on frequency characteristics of voltage divider (analytical research)“. Electrical Engineering & Electromechanics, Nr. 4 (29.07.2021): 46–52. http://dx.doi.org/10.20998/2074-272x.2021.4.06.

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Purpose. Determination in the analytical form of the maximum limiting influence of the non-identity of the capacitive elements of the high-voltage arm on the amplitude-frequency characteristic and phase-frequency characteristic of the voltage divider with parallel-series connection of R-, C-elements of the high-voltage arm. Methodology. Based on the previously developed theory of broadband voltage dividers with parallel-series connection of R-, C-elements, analytical expressions for amplitude-frequency and phase-frequency characteristics of the voltage divider are obtained and investigated taking into account the limit case of non-identical capacitive elements of high-voltage arm. Results. The nature of the dependencies of the frequency characteristics of the broadband voltage divider on the value of the tolerance of the capacitive elements of the high-voltage arm, the division factor of the voltage divider in a wide range of frequency changes is determined. Simplified approximating expressions for the maximum values of frequency characteristics of the voltage divider are proposed and their error is determined. Originality. For the first time in the analytical form the limiting influence of non-identity of capacitive elements of a high-voltage arm of a voltage divider on its frequency characteristics is considered. A mathematical model of this influence is constructed and the limit values of frequency characteristics of the voltage divider are determined. Practical value. It is recommended to introduce into the normative documentation of broadband voltage dividers the corrected value of the division factor, which allows to significantly reduce the deviation of the actual value of the division factor of the voltage divider from the normalized value in a wide range of frequency changes.

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Satriyadi, I. Gusti Ngurah, I. Made Yulistya Negara, Daniar Fahmi, N. Wijayanto, Mochammad Wahyudi, Dimas Anton Asfani und Adi Soeprijanto. „Ferroresonance Characteristics on Capacitive Voltage Transformer Under Lightning Impulse Voltage“. International Review on Modelling and Simulations (IREMOS) 9, Nr. 4 (31.08.2016): 306. http://dx.doi.org/10.15866/iremos.v9i4.9273.

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Pawawoi, Andi, und Syafii Syafii. „On Load Characteristic of the New Design Permanent Magnets Reluctance Generator“. International Journal of Applied Power Engineering (IJAPE) 6, Nr. 3 (01.12.2017): 193. http://dx.doi.org/10.11591/ijape.v6.i3.pp193-198.

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These The new design of a permanent magnet reluctance generator claimed to be able to convert the energy of the permanent magnet is the source of the main field into electrical energy, so that the generator output power can reach 167% compared with the input power axis. In this paper will discuss the characteristics of the generator voltage when under load, pure resistance, inductive load and caThese The new design of a permanent magnet reluctance generator claimed to be able to convert the energy of the permanent magnet is the source of the main field into electrical energy, so that the generator output power can reach 167% compared with the input power axis. In this paper will discuss the characteristics of the generator voltage when under load, pure resistance, inductive load and capacitive load. The results showed that when given a purely resistive load, the terminal voltage tends to be constant, but if given the inductive load, the voltage drop occurs significantly approaching zero voltage at full load current. It is very different when loaded capacitive load. When the generator under load is capacitive, the generator voltage at full load increased by 224.7% from no-load voltage.pacitive load. The results showed that when given a purely resistive load, the terminal voltage tends to be constant, but if given the inductive load, the voltage drop occurs significantly approaching zero voltage at full load current. It is very different when loaded capacitive load. When the generator under load is capacitive, the generator voltage at full load increased by 224.7% from no-load voltage

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Liu, Shoubao, Yucheng Hou, Zhonghao Xiong, Yuan Fang und Li Tong. „Study on Impact Response Characteristics of Capacitive Voltage Transformer“. Journal of Physics: Conference Series 1486 (April 2020): 062017. http://dx.doi.org/10.1088/1742-6596/1486/6/062017.

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Pawawoi, Andi, und Syafii Syafii. „On Load Characteristic of the New Design Permanent Magnets Reluctance Generator“. International Journal of Applied Power Engineering (IJAPE) 6, Nr. 3 (01.12.2017): 199. http://dx.doi.org/10.11591/ijape.v6.i3.pp199-204.

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Hrbac, Roman, Vaclav Kolar, Mikolaj Bartlomiejczyk, Tomas Mlcak, Petr Orsag und Jakub Vanc. „A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor“. Elektronika ir Elektrotechnika 26, Nr. 4 (07.08.2020): 25–31. http://dx.doi.org/10.5755/j01.eie.26.4.25888.

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This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters. This divider is a part of a combined voltage and current sensor for measurements in high voltage power networks. The sensor allows continuous monitoring of the network distribution status and performs a quick diagnosis and location of possible network failures. Deployment of these devices will support semi-autonomous control of power networks and it can be considered as a step from traditional power grids toward smart grids. This is a worldwide trend connected with increasing number of renewable energy sources and plug-in electric vehicles as described in. In this way, it contributes to the reliability of the distribution network. Together with automated control techniques and fault location methods, it enables its self-healing capability. The following characteristics required for the sensor include: current measurement error up to 2 %, voltage measurement error up to 0.5 %, and power measurement error up to 5 %. At the same time, it is necessary that the sensor is cost-effective - relatively cheap. There were selected capacitors made in series production for the capacitive divider designing. The capacitive voltage divider was tested in terms of time and temperature stability; the results are described in the paper. Then, the method of mathematical correction of a temperature dependence of the capacitive voltage divider was suggested and tested.

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Liu, Shulin, und Yongxiu Zhao. „Research on Short-Circuit Discharge Characteristics of Capacitive Circuits Based on Safety Spark Test Apparatus“. Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/516925.

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Based on the safety spark test apparatus, the short-circuit spark discharge (SCSD) characteristics of the simple capacitive circuit and switching converter are studied. It is pointed out that their SCSD process can be divided into four stages, that is, dielectric-breakdown stage, spark-generated stage, spark-maintenance stage, and spark-extinguish stage; moreover, there is different equivalent spark resistance in each stage. For the simple capacitive circuit, its spark resistance is larger and maintaining voltage is almost unchanged in the spark-maintenance stage. For the switching converter, its output short-circuit characteristics depend strongly on the load resistance and its maintaining voltage reduces rapidly with the decrease of the load resistance. The circuit model is proposed, which can simulate the output SCSD process of the switching converter. By using the least-squares method, the relationship expressions between the discharge duration and capacitance in each time-stage are derived and the corresponding equivalent resistance is obtained. The mathematical models are established, and the expressions of the discharge current and voltage are deduced. Experiment and simulation results are positive in the analysis showing the feasibility of the proposed models.

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Xu, Yunyang, Heng Nian, Yangming Wang und Dan Sun. „Impedance Modeling and Stability Analysis of VSG Controlled Grid-Connected Converters with Cascaded Inner Control Loop“. Energies 13, Nr. 19 (01.10.2020): 5114. http://dx.doi.org/10.3390/en13195114.

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This paper develops the impedance models of grid-connected converters under the virtual synchronous generator (VSG) strategy with a cascaded inner control loop and analyzes the system stability of VSG controlled converters with different kinds of weak grid. Different from existing small-signal models with high dimensions, a single-in-single-out (SISO) impedance model with simple mathematical expression is obtained in this paper, which is applied to identify the influence of the cascaded control loop on impedance characteristics and system stability. It is found that the impedance characteristics of VSG controlled converters can become capacitive below the fundamental frequency, and it is mainly caused by the voltage controller in the cascaded control loop of the VSG strategy. Impedance-based stability analysis shows that the capacitive impedance characteristics can benefit the compatibility of converters operated with the series-compensated weak grid, but may deteriorate the system stability with the inductive weak grid, which can be avoided by increasing the proportional coefficients of the cascaded voltage and current controllers or applying a larger virtual resistor to reduce the negative resistance in the capacitive frequency range. Experiments based on the control-hardware-in-loop (CHIL) platform were carried out to verify the developed analytical models and possible system instable cases.

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Nadtoka, Ivan, Pyotr Osadchiy und Vladimir Tropin. „Features of Application of the «Open Triangle» Scheme in the Rural Low-Voltage Structure Distribution Network“. Известия высших учебных заведений. Электромеханика 63, Nr. 5 (2020): 72–78. http://dx.doi.org/10.17213/0136-3360-2020-5-72-78.

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The features of applying the «open triangle» scheme in the structure of a rural low-voltage distribution network with a voltage of 220 V are studied from the standpoint of achieving a certain energy efficiency. The energy effect is estimated by the criterion of the relative value of the additional power losses in the conductors of a three-wire line of a 220 V network caused by reactive power and load asymmetry. The load is modeled by two power receivers connected to the phase-to-phase voltage, the general output of the power receivers is grounded, which forms the «open triangle» circuit. The energy characteristics of the active load, active load with capacitive corrective element, active load with capacitive and inductive corrective elements are analyzed; and also the most practical case – active-inductive load with various values of reactive power factors -0,1; 0,2; 0,3 and capacitive corrective element. An important feature of applying the «open triangle» scheme in the structure of a rural low-voltage distribution network with a voltage of 220 V, from the standpoint of achieving practically necessary and sufficient energy efficiency - not exceeding 10 % of the additional power losses, is the ability to compensate for reactive power and balancing the phase currents of the network line using only one corrective capacitor of relatively low power - about 50 % of the active power of one power receiver.

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Dinh, Hien Sy, Tuan Tran Anh Thi und Luong Thi Nguyen. „SIMULATING CHARACTERISTICS OF CARBON NANOTUBE FIELD- EFFECT TRANSISTOR (CNTFET)“. Science and Technology Development Journal 13, Nr. 2 (30.06.2010): 15–27. http://dx.doi.org/10.32508/stdj.v13i2.2123.

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We provide a model of coaxial CNTFET, using single wall nanotube. These devices would exhibit wrap-around gates that maximize capacitive coupling between the gate electrode and the nanotube channel. The results of simulations of I-V characteristics for CNTFETs are presented. Here we use non-equilibrium Green’s function (NEGF) to perform simulation for CNTFET. This simulator also includes a graphic user interface (GUI) of Matlab that enables parameter entry, calculation control, display of calculation results. In this work, we review the capabilities of the simulator, summarize the theoretical approach and experimental results. Current-voltage characteristics are a function of the variables such as: diameter of CNT, the length of CNT, the gate oxide thickness, gate voltage of Vg, types of materials of Source-Drain, Gate, and temperature. The obtained I-V characteristics of the CNTFET are also presented by analytical equations.

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Dissertationen zum Thema "Capacitive-voltage characteristics"

Mlčkovová, Hana. „Studium dielektrických vlastností krystalů perovskitů“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445134.

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The presented diploma thesis deals with the preparation of perovskite single crystals by inverse thermal crystallization and subsequent study of the basic properties of these hybrid organic-inorganic materials that can be used in various optoelectronic (photodetectors, transistors, lasers, LEDs) or photovoltaic applications. Their behavior in the electric field was studied by impedance spectroscopy. Impedance and capacitance-voltage (C-V) characteristics (frequency dependences) were measured in the dark and in the light. From the impedance dependences for measurements at 0 V voltage in the dark, the equivalent circuit was modeled and its parameters and dielectric constant were determined. From the C-V dependence, Mott-Schottky analysis determined the parameters – "flat-band" potential U_"fb" and charge carrier density N_"C-V" , the parameter – the so-called Warburg coefficient was found, which together with the parameter N_"C-V" was used to calculate the diffusion coefficient D.

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Konferenzberichte zum Thema "Capacitive-voltage characteristics"

Chen, Shao Qing, Jian Ming Li, Tao Luo, Hui Ying Zhou, Qi Xiao Ma und Lin Du. „Study on the impulse characteristics of capacitive voltage transformer“. In 2013 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD). IEEE, 2013. http://dx.doi.org/10.1109/asemd.2013.6780709.

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Zare, Mohammad Hadi, Ahmad Mirzaei und Hossein Askarian Abyaneh. „Designing a compensating electronic circuit to enhance capacitive voltage transformer characteristics“. In 2015 9th Power Systems Protection and Control Conference (PSPC). IEEE, 2015. http://dx.doi.org/10.1109/pspc.2015.7094922.

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Wang, Hongxing, Guoqing Zhang, Xingguo Cai und Zhizhong Guo. „The electronic capacitive voltage transformers error characteristics research and parameter optimization design“. In Energy Society General Meeting (PES). IEEE, 2009. http://dx.doi.org/10.1109/pes.2009.5275999.

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Hongxing Wang, Guoqing Zhang, Xingguo Cai und Zhizhong Guo. „Error characteristics research and parameter optimization design for the electronic capacitive voltage transformers“. In 2009 International Conference on Sustainable Power Generation and Supply. SUPERGEN 2009. IEEE, 2009. http://dx.doi.org/10.1109/supergen.2009.5347975.

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Channegowda, Parikshith, Poovizhi Rengasamy, Daniel Ludois und Giri Venkataramanan. „High Voltage DC- DC Converter Topology based on Capacitive Coupling with Soft Switching Characteristics“. In 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES). IEEE, 2020. http://dx.doi.org/10.1109/pedes49360.2020.9379784.

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Jae Kap Jung, Eddy So, Sang Hwa Lee und David Bennett. „A comparison of systems between KRISS and NRC to evaluate performance characteristics of a 400 kV capacitive voltage divider“. In 2010 Conference on Precision Electromagnetic Measurements (CPEM 2010). IEEE, 2010. http://dx.doi.org/10.1109/cpem.2010.5543410.

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Paquette, J., K. J. Kim, J. D. Nam und Y. S. Tak. „An Equivalent Circuit Model for Ionic Polymer-Metal Composites and Their Performance Improvement by a Clay-Based Polymer Nano-Composite Technique“. In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39003.

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Ionic Polymer-Metal Composite (IPMC) is a new class of polymeric material exhibiting large strain with inherent soft actuation. The observed motion characteristics of an IPMC subjected to an electric field is highly non-linear. This is believed to be due primarily to the particle electrodes on the IPMC surface, which is inherently both capacitive and resistive due to particle separation and density. Knowing that the value of resistivity and capacity can be manipulated by the number of metal platings applied to the IPMC, the force response of an IPMC when subjected to an imposed electric field is due to the interaction of an array of capacitors and resistors along with ionic migration. In this effort we attempt to incorporate a capacitive and resistive model into the previously developed linear irreversible thermodynamic model. The advantages of using such a model are i) the possible dynamic predictability of the material itself; and ii) the realization of capacitive and resistive effect arising from the particle electrodes and the base polymer, respectively. The behavior of the proposed model can explain typical experimentally obtained values well. Also, an experimental effort to improve the properties of the base polymer was carried out by a novel nanocomposite technique. The experiment results on the current/voltage (I/V) curves indicate that the starting material of ionic polymer-metal composites (IPMCs) can be optimized to create effective polymer actuators.

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Zhang, Li, Jun Yao, Dajia Wa, Qing Rao, Hongsheng Zhong und Jurgen Schmoll. „High Isolation X-Band RF MEMS Shunt Switches on Groove Etched Substrates“. In 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2008. http://dx.doi.org/10.1115/micronano2008-70107.

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Developments in RF MEMS switches have demonstrated great potential at low-loss microwave application. MEMS shunt switches have a few advantages compared to the FET or p-i-n diode counterparts due to their characteristics of low intermodulation distortion or harmonics, low DC power consumption, low insertion losses and high isolation [1][2]. RF MEMS shunt capacitive switches has shown excellent performance from Ka-band to W-band, however, they fail to perform the same in X-band for the low isolation in this frequency range. Various approaches have been introduced to address this shortcoming, such as applying high-impedance transmission line [3], using strontium titanate oxide (SrTiO3) as high relative dielectric constant material [2], etc. Aimed at X-band applications, this paper reports a novel design of a high isolation RF MEMS shunt capacitive switch which is fabricated on a groove etched substrate. Fig. 1(a) and Fig. 2(a) show the schematics of the MEMS capacitive switch. The switch is constructed on a coplanar waveguide (CPW) transmission line. When the switch is up, the switch presents a small shunt capacitance to ground, presenting an RF open. When the switch is pulled down to the center conductor by electrostatic force, the shunt capacitance increases remarkably, presenting an RF short. In this work, a short high-impedance section of transmission line is designed between the MEMS bridge and the ground plane. This increases the series inductance of the switch so as to lower the resonant frequency. The length of this line is designed to put the series resonant frequency into the frequency range of X-band. Two grooves are etched into the substrate along the center conductor between the transmission line and the ground plane. For the desired characteristic impedance, a wider center conductor width can be obtained by increasing the groove depth accordingly. Thus the CPW with grooves potentially has a lower attenuation due to conductor losses [4]. Moreover, as center conductor gets wider, the down-state shorting-circuit capacitance increases which helps to gain a higher isolation. The mechanical and RF performances of this switch have been analyzed by FEA software, IntelliSuite and HFSS. As shown in Fig. 1(b), the actuation voltage of the planar switches is 26V. The RF characteristics of the switch at down state are obtained through HFSS. In Fig. 1(c), the down state isolation reaches −54.6dB at its self-resonate frequency of 13.5GHz. Compared with the non-grooves counterpart, the designed grooves optimize the isolation performance by 7dB. The insertion loss is less than 0.2 dB from 5 to 30 GHz. Fig. 2(a) shows the serpentine folded suspension switch, its actuation voltage is 14V, shown as in Fig. 2(b). The RF response in Fig. 2(c) demonstrates that the series resonant frequency is down to 11GHz due to the inductance introduced by serpentine folded suspensions. The down state isolation is −42.8dB at 11GHz. However, it is demonstrated that the substrate grooves did not help to optimize isolation performance. This is due to the higher resistance and inductance introduced by serpentine folded suspension. This research is supported by “Hundreds Scholar Program”, Chinese Academy of Sciences.

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Bauer, Eric, Matt Foster, Bailey Hall, Jin Wang, Daniel Schweickart und Dennis Grosjean. „Experimental Observations of the Transient Characteristics of Series dc Arcs with Capacitive Loads“. In 2018 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2018. http://dx.doi.org/10.1109/ipmhvc.2018.8936799.

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Wang, Wei Wang, ZhaoHui Wang, Wen Bu, Xilin Yan, ZhiQiang Guo und Xin Wang. „Influence of capacitive parameters on the overvoltage characteristics of three-core submarine cable“. In 2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE). IEEE, 2020. http://dx.doi.org/10.1109/ichve49031.2020.9279763.

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