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Journal articles on the topic 'Capacitors'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Plesca, Adrian. "Considerations About Controlled Capacitors." Journal of Electrical Engineering 61, no. 3 (2010): 189–92. http://dx.doi.org/10.2478/v10187-010-0027-2.

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Considerations About Controlled CapacitorsA new type of thermal controlled capacitor has been developed and studied. The capacitor non-linearity depends on the control parameter — temperature. At constant temperatures, the charge versus voltage curve is non-linear and has thermal inertia. Actually, it is a new method to modify the capacitors' capacitance using the thermal field as a command parameter and brings new technical solutions for protection of electrical equipment.

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Hardiyanto, Denny, Prabakti Endramawan, Ridho Nur Taufiqul Manan, and Dyah Anggun Sartika. "Arduino Implementation for Development Digital Capacitance Meters as Laboratory Measurement Devices." SinkrOn 7, no. 3 (2022): 784–90. http://dx.doi.org/10.33395/sinkron.v7i3.11456.

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Electronics Practicum in the Laboratory is a routine activity carried out to support student skills. Capacitors are one of the components that are often used in practice. Capacitors are one of the passive electronic components that have a magnitude value in the form of capacitance in Farad units. The capacitance value indicates the capacitor's ability to store electric charge. However, the value contained on the capacitor label is not necessarily the actual value because the capacitor has a tolerance range. Of course, this is very influential in the measurement and performance of electronic ci

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Bărbulescu, Corneliu, Dadiana-Valeria Căiman, and Toma-Leonida Dragomir. "Parameter Observer Useable for the Condition Monitoring of a Capacitor." Applied Sciences 12, no. 10 (2022): 4891. http://dx.doi.org/10.3390/app12104891.

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Monitoring the condition of electrolytic capacitors in practical applications is a topic that has been and remains the subject of much research. This article is part of research in this area. It develops a parameter observer (PO) and proposes its use for the determination of the equivalent capacity and equivalent serial resistance of electrolytic capacitors. The observer is an integral-open-loop type second-order system, the input of which is the voltage at the capacitor terminals measured during a two-stage capacitor’s discharging process through a variable resistor. The PO estimates the so-c

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Barbulescu, Corneliu, and Toma-Leonida Dragomir. "Parameter estimation for a simplified model of an electrolytic capacitor in transient regimes." Journal of Physics: Conference Series 2090, no. 1 (2021): 012143. http://dx.doi.org/10.1088/1742-6596/2090/1/012143.

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Abstract The real capacitors’ behaviour in electric circuits modelled by a single capacity deviates from the ideal one. In order to find better compromises between precision and simplicity, different C-R-L models are used. In these models, C, R, L are called equivalent parameters and take constant values. Under these assumptions, the capacitors are modelled as lumped parameter subsystems although it is well known that the real capacitors are essentially distributed parameter systems. As highlighted in this paper, the capacitors are also time-variant subsystems. To prove this, we use two types

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Jeong, Sunwoo, Akeem Bayo Kareem, Sungwook Song, and Jang-Wook Hur. "ANN-Based Reliability Enhancement of SMPS Aluminum Electrolytic Capacitors in Cold Environments." Energies 16, no. 16 (2023): 6096. http://dx.doi.org/10.3390/en16166096.

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Due to their substantial energy density and economical pricing, switching-mode power supplies (SMPSs) often utilize electrolytic capacitors. However, their ability to function at low temperatures is essential for dependable operation in several sectors, including telecommunications, automotive, and aerospace. This study includes an experimental evaluation of how well standard SMPS electrolytic capacitors operate at low temperatures. This paper investigates the suitability of standard electrolytic capacitors used in switched-mode power supplies (SMPSs) for low-temperature applications. The expe

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Butnicu, Dan. "A Derating-Sensitive Tantalum Polymer Capacitor’s Failure Rate within a DC-DC eGaN-FET-Based PoL Converter Workbench Study." Micromachines 14, no. 1 (2023): 221. http://dx.doi.org/10.3390/mi14010221.

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Many recent studies have revealed that PoL (Point of Load) converters’ output capacitors are a paramount component from a reliability point of view. To receive the maximum degree of reliability in many applications, designers are often advised to derate this capacitor—as such, a careful comprehending of it is required to determine the converter’s overall parameters. PoL converters are commonly found in many electronic systems. Their most important requirements are a stable output voltage with load current variation, good temperature stability, low output ripple voltage, and high efficiency and

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Bao, Changqing, Hongjia Zhu, and Jiayu Liu. "Introduction of parasitic capacitance and methods of reducing its capacitance." Applied and Computational Engineering 85, no. 1 (2024): 141–47. http://dx.doi.org/10.54254/2755-2721/85/20240686.

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This paper aims to introduce some basic knowledge of parasitic capacitors and how to reduce the impact of parasitic capacitors in theory and in practice. In the production and processing and daily life, people will be more or less to the use of capacitors. The main function of a capacitor is to store electrical energy when it is connected to its charging circuit. When disconnected from the charging circuit, it can consume stored energy, so it can be used like a temporary battery. However, not all capacitors are good for people, such as parasitic capacitors. Parasitic capacitor is an unavoidabl

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Naoi, K. "‘Nanohybrid Capacitor’: The Next Generation Electrochemical Capacitors." Fuel Cells 10, no. 5 (2010): 825–33. http://dx.doi.org/10.1002/fuce.201000041.

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9

ANANDA MOHAN, P. V. "CAPACITOR FLOATATION SCHEME USING ONLY OTAs AND GROUNDED CAPACITORS." Journal of Circuits, Systems and Computers 05, no. 02 (1995): 181–97. http://dx.doi.org/10.1142/s021812669500014x.

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10

Zhang, Xing Hai, Bo Wen Zhang, Wei Feng Han, Ji Xing Sun, Guang Ning Wu, and Guo Qiang Gao. "Research on Overvoltage of Parallel Capacitors in 500kv Substation and its Protection Parameters." Applied Mechanics and Materials 303-306 (February 2013): 1920–24. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1920.

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In order to make it clear for explosion accidents of parallel capacitors occurred in 500kV substations in Sichuan power network one after another, the authors calculate and analyze the distribution of overvoltage caused by breakdown of elements within the capacitor bank. Dissecting the insulation of faulty capacitors, severe ageing of insulation is discovered; this phenomenon proves that the overvoltage on partial element should be the main factor influencing the insulating performance of capacitors. To ensure the reliable operation of parallel capacitors the setting value of unbalanced curren

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11

Dang, Hoang-Long, and Sangshin Kwak. "Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters." Sensors 20, no. 13 (2020): 3740. http://dx.doi.org/10.3390/s20133740.

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Capacitors are critical components of power converter systems as they influence the cost, size, performance, and scale of such systems. However, capacitors exhibit the highest degeneration and breakdown rates among all power converter components due to their wear-out failures and short lifespans. Therefore, condition monitoring is a vital process to estimate the health status of capacitors and to provide predictive maintenance for ensuring stability in the operation of power converter systems. The equivalent series resistance (ESR) and the capacitance of the capacitor are two widely used param

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12

Sun, Lei, Qin Yuan Dai, Chuang Chuan Lee, and Gao Shuai Qiao. "The Analysis on the Parasitic Capacitors Effect of the Fully Differential Architecture of SAR ADC." Applied Mechanics and Materials 20-23 (January 2010): 342–45. http://dx.doi.org/10.4028/www.scientific.net/amm.20-23.342.

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This paper presents an analysis on the parasitic capacitors effect of the fully differential architecture to provide common-mode rejection. The parasitic capacitors of differential comparator inputs has no effect on the resolution, however, the difference of comparator input parasitic capacitors may has great effect on the resolution. The relationship between the unity capacitor and the parasitic capacitors of the differential comparator inputs is analyzed by giving precise theoretical demonstration. Therefore, a theoretical basis is provided for designers to choose appropriate unity capacitor

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13

Huang, Guoxing, Xianhuai Cao, Haozheng Wei, Pin Chen, and Zhiyuan Li. "Case study: A type of low-noise power capacitor based on combined microperforated panels." Noise Control Engineering Journal 70, no. 6 (2022): 519–26. http://dx.doi.org/10.3397/1/377045.

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Power capacitors of high-voltage alternating/direct current transmission systems have become one of the main community noise sources because of their large number and because they employ ultrahigh voltage and power. According to the broadband noise characteristics of power capacitors and based on the theory of combined microperforated panels, a low-noise capacitor with broadband sound absorption is designed and machined. Noise comparison tests were conducted between the modified and conventional capacitors in a semi-anechoic chamber. The results indicate that the proposed low-noise capacitor w

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Bunel, Catherine, and Franck Murray. "Ultra thin, low ESL and high frequency performance of high density silicon capacitors." International Symposium on Microelectronics 2016, no. 1 (2016): 000060–63. http://dx.doi.org/10.4071/isom-2016-tp26.

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Abstract The very high capacitance platform (now up to 900 nF/mm2) of the 3D Silicon capacitor technology presents many advantages for signal integrity, performance improvement, and miniaturization. In this paper, we will illustrate these advantages for communication infrastructure and high speed processors. The intrinsic IPDiA Silicon capacitors construction and the simplified equivalent electrical models will be compared with the multilayer ceramic capacitor (MLCC) model. We will also demonstrate how the Silicon capacitors are better candidates for performance, miniaturization and integratio

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15

Xia, Zheng Peng, Chen Quan Zhou, Dan Shen, Hong Jun Ni, Yin Nan Yuan, and Liao Ping. "Study on the Cooling System of Super-Capacitors for Hybrid Electric Vehicle." Applied Mechanics and Materials 492 (January 2014): 37–42. http://dx.doi.org/10.4028/www.scientific.net/amm.492.37.

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The heating mechanism of the capacitor is researched, the air cooling structure is designed of the capacitors, the model of the cooling of the capacitors is established for the heating phenomenon occurs during the charging and discharging process for super capacitors in series of hybrid electric vehicle. The model of the cooling is simulated based on the software of Star CCM +. The results of experiment show that the maximum temperature difference is less than 5°C among the capacitors, which ensures the consistency of the capacitors working temperature and proves the capacitors work substantia

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16

Dekker, E. H. L. J., and C. J. M. Lasance. "Thermal and Electrical Analysis of Solid Aluminium Capacitors." Active and Passive Electronic Components 12, no. 3 (1987): 167–86. http://dx.doi.org/10.1155/1987/46158.

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The thermal properties of electronic components partly determine the reliability of electronic equipment. For electrolytic capacitors, they also set the limits for the ripple current and voltage values.This article first discusses the voltage limits under various conditions of temperature, frequency and polarity. Then the connection of ripple current to these parameters and to the capacitor's resistance is treated.An extensive analysis is made of the influence of heat conduction in the capacitor and the printed-circuit board, for metal-cased as well as for epoxy-coated pearl types. The study p

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17

Yan, Tian Xiang, Xiao Lan Xie, Xin Yu Chen, and Peng Niu. "Analysis of Thyristor Switched Three-Phase Capacitor." Advanced Materials Research 722 (July 2013): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amr.722.311.

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it can limit the reactive power transmission to improve the voltage quality of power grid by installing parallel capacitors for reactive power compensation. But due to presence of transient transition process during power capacitors switching, it will seriously affect the service life of power capacitors and the safe operation of power system if the switching process of capacitors is not properly controlled. Firstly, this article described the fundamental principle and switching conditions of Thyristor Switched Capacitor (TSC). Secondly, the selection of switching time was analyzed for Thyrist

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18

Ou, Yu Qiang, Le Feng Cheng, Jian Zhong Wen, Xuan Yu Qiu, and Tao Yu. "Review of the Relationship between Harmonic and Parallel Capacitor Fault." Advanced Materials Research 1044-1045 (October 2014): 507–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.507.

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The parallel capacitors are the most important reactive power compensation devices in power system, while the power system harmonic pollution is becoming increasingly serious in recent years, the accident that caused capacitors fault and damage by overload harmonic always happened. Based on this background and summary of the existing research results, thermal effect and performance index of capacitors are introduced, and analyzed the mechanism of interaction between harmonic and capacitor, then the effect and harm of running capacitor under harmonic conditions are elaborated, finally summarize

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19

Labiedh, Walid, Bessem Zitouna, Mohamed Tlig, and Jaleleddine Slama. "Analysis and Modeling of Film Capacitor Radiation Generic Radiating Model for the Rectangular Capacitors." Applied Computational Electromagnetics Society 36, no. 4 (2021): 425–34. http://dx.doi.org/10.47037/2020.aces.j.360408.

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Capacitors are sources of EM field emissions whose characterization is crucial for electronic circuits EMC. This paper presents the modeling of equivalent radiating sources of rectangular film capacitors. It presents and analyses the magnetic near field measured above plastic and polyester capacitors. The measurements are then used by the inverse method to create a radiating source model for the capacitor. The results show a good agreement between the measured cartography and the one obtained when using radiating sources model. Finally, a generic radiating model is proposed for various types o

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Nugraha, Adi, and Felycia Felycia. "Optimizing Energy-Efficient Home Electrical Systems through Capacitor Integration to Improve Future Energy Efficiency." Journal of Mechatronics and Artificial Intelligence 1, no. 2 (2024): 85–96. https://doi.org/10.17509/jmai.v1i2.76571.

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This research discusses the optimization of energy-efficient home electrical systems through the integration of capacitors to improve future energy efficiency. The main objective is to analyze the impact of installing power capacitors in parallel with electrical loads such as fans, refrigerators, and computers to improve power factor and reduce energy consumption. An experimental approach is used, installing capacitors with different values (2μF, 6μF, 8μF) on the test loads and measuring parameters such as voltage, current, power factor, and active power. The results show that the installation

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21

Obara, Hidemine, Masamu Kamaga, Takumi Ito, and Yukihiko Sato. "An Investigation of Capacitors for Flying Capacitor Converters." IEEJ Transactions on Industry Applications 131, no. 12 (2011): 1393–400. http://dx.doi.org/10.1541/ieejias.131.1393.

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Obara, Hidemine, and Yukihiko Sato. "Selection Criteria of Capacitors for Flying Capacitor Converters." IEEJ Journal of Industry Applications 4, no. 2 (2015): 105–6. http://dx.doi.org/10.1541/ieejjia.4.105.

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Obara, Hidemine, Masamu Kamaga, Takumi Ito, and Yukihiko Sato. "An Investigation of Capacitors for Flying Capacitor Converters." Electrical Engineering in Japan 186, no. 4 (2013): 81–91. http://dx.doi.org/10.1002/eej.22361.

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Li, Jinyu, Xiaoyan Lei, Zhongqiu Zuo, and Yi Xiong. "Vibration Model of a Power Capacitor Core under Various Harmonic Electrical Excitations." Energies 15, no. 5 (2022): 1848. http://dx.doi.org/10.3390/en15051848.

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Power capacitors are widely used in power transmission systems. During their operation, an electric force acting on the electrodes of the power capacitors actuates mechanical vibrations and radiates an audible noise. Considering a power capacitor as a general system, the frequency response with the electric force as the input and mechanical vibration as the output have been measured by engineers in recent years and used to evaluate the acoustic and mechanical features of products. Accidentally, it was found that the frequency of the capacitor vibration was not consistent with its excitation du

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Yildiz, Ali. "Pre-service teacher’s understanding levels of capacitors and instructors’ predictions about the given responses." New Trends and Issues Proceedings on Humanities and Social Sciences 4, no. 8 (2018): 32–39. http://dx.doi.org/10.18844/prosoc.v4i8.2960.

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This study explores the understanding levels of pre-service teachers of the elementary school mathematics teacher education undergraduate program about capacitors that they learned in the compulsory Physics-2 course in the second year of the second term, and instructors’ predictions about the teachers’ responses. A total of 54 pre-service teachers participated in the study. The findings of the study reveal that 62.9% of the pre-service teachers did not know the function of a capacitor, 46.3% could not write any equations in connection with the capacitor and 57.4% could not explain any of the q

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Shimizu, Rinon, Ryuki Hanazawa, and Naoyuki Morita. "Influence and Effect of Pyrolysis with Additives in Tantalum Capacitors." International Journal of Environmental Science and Development 13, no. 4 (2022): 138–43. http://dx.doi.org/10.18178/ijesd.2022.13.4.1384.

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In recent years, the demand for tantalum capacitors has been increasing due to the miniaturization of electronic devices. Tantalum capacitors, which use the rare metal tantalum as the capacitor element, are used in electronic devices such as cell phones because they are smaller and have a higher capacity than conventional capacitors. In Japan, there are reports that minerals containing rare elements are being extracted from discarded electronic and electrical equipment to produce medals for the 2020 Tokyo Olympics. In Japan, many used electrical products containing rare elements are discarded,

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Nguyen, Hien Thanh, and Tien Ngoc Nguyen. "IMPLEMENTING A 12-STEPS MIRKO CAPACITORS CONTROL MODEL FOR PRACTICAL TEACHING (A case study of Electrical and Electronic Engineering Technology major at Tra Vinh University)." SCIENTIFIC JOURNAL OF TRA VINH UNIVERSITY; ISSN: 2815-6072; E-ISSN: 2815-6099 1, no. 43 (2022): 42–50. http://dx.doi.org/10.35382/18594816.1.43.2021.818.

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This study is to implement a 12-steps Mikro capacitors control model which serves for the teaching, learning, researching and practicing of students majoring in Electrical and Electronic Engineering Technology. By methods of analysis based on working experience, methods of synthesizing theory and scientific experiments, operating on the 6-steps Mirko capacitors control model, the research has built a 12-steps Mirko capacitors control model which is an improvement compared to current model. The drawings of the model are designed, processed, operated, tested and corrected measurement errors by A

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Wang Qianqian, Liu Weili, Tang Minan, and Zhang Kaiyue. "Diagnosis Method for Multiple Compensation Capacitor Faults of Jointless Track Circuit." Electrotehnica, Electronica, Automatica 70, no. 3 (2022): 12–21. http://dx.doi.org/10.46904/eea.22.70.3.1108002.

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The compensation capacitor fault of jointless track circuit has an important impact on the safe operation of high-speed trains. In order to solve the problem of multiple compensation capacitors breaking at the same time in jointless track circuit, a fault diagnosis method based on the amplitude characteristics of induced voltage envelope curve is proposed. Firstly, the shunt state model of track circuit is established, and the envelope curves of induced voltage amplitude corresponding to the disconnection fault of compensation capacitors at different positions are obtained by simulating analys

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Yin, Zhijian, Huan Qiu, Yongheng Yang, Yi Tang, and Huai Wang. "Practical Submodule Capacitor Sizing for Modular Multilevel Converter Considering Grid Faults." Applied Sciences 10, no. 10 (2020): 3550. http://dx.doi.org/10.3390/app10103550.

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Submodule (SM) capacitors are key elements in the modular multilevel converter (MMC), the design of which influences the entire system performance. In practical cases, SM capacitor sizing must consider the abnormal system operation (e.g., grid faults). In order to find a clear design boundary for SM capacitors, a practical capacitor sizing method is presented for the first time in this paper, considering the grid-fault-ride-through operation of the MMC, impact of MMC control system, and aging mechanism of capacitors. The SM capacitor rated voltage, capacitance, ESR, thermal resistance, and lif

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Hiralal, Pritesh, Gemma Rius, Piers Andrew, Masamichi Yoshimura, and Gehan A. J. Amaratunga. "Tailoring Carbon Nanostructure for High Frequency Supercapacitor Operation." Journal of Nanomaterials 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/619238.

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The possibility of enhancing the frequency performance of electrochemical capacitors by tailoring the nanostructure of the carbon electrode to increase electrolyte permeability is demonstrated. Highly porous, vertically oriented carbon electrodes which are in direct electrical contact with the metallic current collector are produced via MPECVD growth on metal foils. The resulting structure has a capacitance and frequency performance between that of an electrolytic capacitor and an electrochemical capacitor. Fully packaged devices are produced on Ni and Cu current collectors and performance com

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Melnychuk, S. I., M. H. Tarnovskyi, and O. H. Murashchenko. "ANALYSIS OF THE ARCHITECTURE OF SUCCESSIVE APPROXIMATION REGISTER ADC AND APPROACHES TO ITS IMPROVEMENT." Information technology and computer engineering 57, no. 2 (2023): 4–12. http://dx.doi.org/10.31649/1999-9941-2023-57-2-4-12.

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Successive approximation register analog-digital converters (SAR ADC) represent the majority of the ADC market for medium- to high-resolution ADCs. Modern SAR ADCs allow to ensure a sampling frequency of more than 100 MHz with a resolution of 10 to 12 bits. Features of the ADC architecture of this type: simplicity, high energy efficiency and dependency of conversion time from resolution. The two main components of a SAR ADC that affect its basic characteristics are the comparator and the digital-to-analog converter (DAC). The DAC based on a capacitor matrix is most often used. In practice, whe

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Bhargava, Cherry, Vijay Kumar Banga, and Yaduvir Singh. "Condition monitoring of aluminium electrolytic capacitors using accelerated life testing." International Journal of Quality & Reliability Management 35, no. 8 (2018): 1671–82. http://dx.doi.org/10.1108/ijqrm-06-2017-0115.

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Purpose An electrolytic capacitor is extensively used as filtering devices in various power supplies and audio amplifiers. Low cost and higher value of capacitance make it more well known. As environmental stress and electrical parameters increase, capacitors degrade on accelerated pace. The paper aims to discuss these issues. Design/methodology/approach This paper focusses on the impact of thermal stress on electrolytic capacitors using accelerated life testing technique. The failure time was calculated based on the change in capacitance, equivalent series resistance and weight loss. The expe

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Badi, N., C. Boney, and A. Bensaoula. "Self-packaged Boron Nitride Capacitor for High Temperature Applications." Journal of Microelectronics and Electronic Packaging 1, no. 4 (2004): 217–24. http://dx.doi.org/10.4071/1551-4897-1.4.217.

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In this work, we investigated applicability of boron nitride (BN) and boron oxynitride (BNO) thin films to fabricate multilayer ceramic capacitors (MLCCs) for high temperature and high frequency applications. Advantages of BN include high temperature and chemical resistance, which should result in more compact and reliable devices. Deposited BN layers by a filamentless ion source assisted physical vapor deposition technique show a high thermal stability up to 1000 °C and a very high breakdown voltage of about 600 V/μm. A 15 mm × 15 mm capacitor geometry was picked to create a simpler packaging

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Chen, Hao, Chunlong Dai, Yanan Li, et al. "An excellent full sodium-ion capacitor derived from a single Ti-based metal–organic framework." Journal of Materials Chemistry A 6, no. 48 (2018): 24860–68. http://dx.doi.org/10.1039/c8ta09072f.

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Hybrid ion capacitors, especially sodium ion capacitors (SICs), have recently attracted enormous attention due to their combined merits of high energy density from the battery-type anode and high power density from the capacitor-type cathode.

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Solis-Rodriguez, Jose, Julio C. Rosas-Caro, Avelina Alejo-Reyes, and Jesus E. Valdez-Resendiz. "Optimal Selection of Capacitors for a Low Energy Storage Quadratic Boost Converter (LES-QBC)." Energies 16, no. 6 (2023): 2510. http://dx.doi.org/10.3390/en16062510.

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This article studies a recently proposed dc-dc converter and its optimization in terms of capacitors selection through the Particle Swarm Optimization (PSO) algorithm. The converter under study is the so-called Low Energy Storage Quadratic Boost Converter (LES-QBC), a quadratic type of converter that offers a smaller Output Voltage Ripple (OVR) compared to the traditional quadratic boost topology with capacitors of the same characteristics. This study presents a way to select the capacitors for minimizing the OVR while achieving a constraint of a maximum stored energy in capacitors. The capaci

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G. Rajakumar. "Recent Advancements in Supercapacitor Technologies." December 2022 4, no. 4 (2023): 256–67. http://dx.doi.org/10.36548/jucct.2022.4.004.

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Supercapacitors (SCs) are a form of energy storage that fills the vacuum left by traditional capacitors and batteries. They have greater energy storage capacity than capacitors and can deliver electricity at higher rates than batteries. Both the capacitor and supercapacitor have two electrodes (plates) separated by a dielectric, however super capacitors have electrodes with a larger surface area and thinner dielectrics, allowing for higher energy densities. Super capacitors are extensively employed in portable electronic devices due to its high storage capacity. The design, properties, and use

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Liu, Wenjun, Genxu Chen, Yimiao Wang, Bicheng Xu, and Yan Chen. "A Series/Parallel Full-bridge MMC with Submodule Capacitor Voltage Self-balancing Capability." Journal of Physics: Conference Series 3012, no. 1 (2025): 012077. https://doi.org/10.1088/1742-6596/3012/1/012077.

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Abstract Modular Multilevel Converters (MMC) are the key equipment in High Voltage Direct Current (HVDC) systems, but they still face challenges such as DC fault clearance and excessive computation for submodule capacitor voltage sequencing. This paper presents an improved full-bridge MMC (MF-MMC) with submodule capacitor voltage self-balancing and DC fault clearance capability. By using two reverse-series IGBTs, adjacent full-bridge submodules are reconfigured from series to parallel, establishing a parallel path between adjacent capacitors. The MF-MMC enables voltage self-balancing between c

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Yang, Feng, Wei Bing Wu, Chang Hong Yang, Hai Tao Wu, and Guang Da Hu. "Device Modeling of Ultrathin Ferroelectric Capacitors." Applied Mechanics and Materials 346 (August 2013): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.346.3.

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A physically based model is developed for modeling the device behavior of ultrathin ferroelectric capacitors by considering ferroelectric/electrode interfacial capacitance and epitaxial strain arising from the lattice misfit in Landau-Ginzburg-Devonshire theory. We constructed the interfacial capacitance-mismatch strain polarization/critical thickness diagrams for the ferroelectric ultrathin capacitor. It is found that, the remanent polarization states and critical thickness for ferroelectricity of thin films is greatly influenced by the interfacial capacitances in the ultrathin capacitors inv

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Rodríguez-Benítez, Omar, Mario Ponce-Silva, Juan Antonio Aqui-Tapia, Óscar Miguel Rodríguez-Benítez, Ricardo Eliú Lozoya-Ponce, and Heriberto Adamas-Pérez. "Active Power-Decoupling Methods for Photovoltaic-Connected Applications: An Overview." Processes 11, no. 6 (2023): 1808. http://dx.doi.org/10.3390/pr11061808.

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This study compares ripple port, stacked switched capacitor, and capacitive energy storage architectures for active power decoupling, comparing the number of components, performance, energy density, DC-link capacitor reduction, efficiency, and frequency operation to highlight their main benefits and drawbacks for single-phase grid-connected applications. The overview reveals equivalent effective energy density without electrolytic capacitors, as well as enhanced simplicity, performance, and durability, thereby providing stacked switched capacitors as an attractive power-decoupling alternative

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Xuan, Chen. "Enlightening Visualization of Charge on Capacitors and Capacitor Circuits." Journal of Physics: Conference Series 2381, no. 1 (2022): 012073. http://dx.doi.org/10.1088/1742-6596/2381/1/012073.

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Abstract The ideal parallel plate capacitor in general physics textbooks lacks electrostatic perspectives regarding how conducting surfaces are charged. The current textbooks somewhat neglect close connections between capacitors and electrostatics, leaving students in limbo when analyzing charge distribution on capacitors in circuits. This paper will suggest a new generalized model of the ideal capacitor and offer learners, mainly from the electrostatic perspective, a better train of thought in analyzing how charges are distributed on various surfaces in capacitor circuits. This paper offers a

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Kobayakawa, Kiichi, Kosuke Muraoka, Hiroshi Sezaki, Seiji Ishikawa, Tomonori Maeda, and Shin Ichiro Kuroki. "Effects of CF₄ Surface Etching on 4H-SiC MOS Capacitors." Materials Science Forum 924 (June 2018): 465–68. http://dx.doi.org/10.4028/www.scientific.net/msf.924.465.

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Effects of CF4etching on 4H-SiC MOS capacitor were investigated. Fluorine atoms were introduced to surface of 4H-SiC using CF4dry etching process as a surface treatment, and 4H-SiC MOS capacitors with dry-oxide were fabricated with this treatment. As the results, breakdown electric field of the MOS capacitors was increased and variation of the characteristics became lower than that of MOS capacitor without this treatment.

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Zhong, Li Ping, Qi Min Gu, and Shui Ping Zhang. "Capacitor Voltage Balance Control for Diode Clamped Multi-Level Inverter Based on Charge Refreshing." Advanced Materials Research 945-949 (June 2014): 2885–90. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2885.

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Unbalance of dc-link capacitor voltage is an key technical problem of multi-level inverter, this paper presents a novel method to solve it. According to the the new approach, a balancing capacitor is in turn connected in parallel with each dc-link capacitor in a sampling time, exacting charges from the capacitors with higher voltage and putting them into the capacitors with lower voltage.Thus the charges of all dc-link capacitors are refreshed constantly and the voltages can be kept balanced on the whole. This method only needs to add a simple hardware circuit and will not increase the complex

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Dmitrikov, Vladimir F., Alexander Yu Petrochenko, Vyacheslav M. Isaev, and Dmitriy V. Shushpanov. "Features of designing line radio interference filter in a wide frequency range, taking into account equivalent circuits for capacitors and inductors." Physics of Wave Processes and Radio Systems 23, no. 4 (2021): 85–96. http://dx.doi.org/10.18469/1810-3189.2020.23.4.85-96.

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Based on the phenomenological equations describing the dynamic processes of magnetization of ferromagnets of inductors and polarization of capacitor dielectrics, taking into account complex frequency-dependent dielectric constants e(jw) of capacitor dielectrics and magnetic permeabilities m(jw) of inductor cores, equivalent electrical structural-parametric and capacitor replacement circuits were obtained. The connection of parasitic elements of equivalent electric circuits of capacitors and inductors with the electrophysical characteristics of the material of the dielectric of the capacitor an

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Hussan, Md Reyaz, Adil Sarwar, Irfan Khan, Mohd Tariq, Mohammad Tayyab, and Waleed Alhosaini. "An Eleven-Level Switched-Capacitor Inverter with Boosting Capability." Electronics 10, no. 18 (2021): 2262. http://dx.doi.org/10.3390/electronics10182262.

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An 11-level switched-capacitor multilevel inverter (SCMLI) with 2.5 times boosting feature is presented in this paper. It can produce an 11-level output voltage waveform by utilizing 14 switches, 3 capacitors, 2 diodes, and 1 DC source. Only nine driver circuits are needed as the topology has three pairs of complementary switches and two bidirectional switches. It has inherent capacitor self-balancing property as the capacitors are connected across the DC voltage source during several states within a fundamental cycle to charge the capacitors to the input voltage. A detailed comparison shows t

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Chen, Gang, Qianqian Wang, Silvia Kim, et al. "57‐1: Micro Display Sub‐Pixel Capacitor Design Balancing Performance, Yield, and Cost." SID Symposium Digest of Technical Papers 55, S1 (2024): 491–93. http://dx.doi.org/10.1002/sdtp.17120.

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Micro displays employ capacitors inside the pixels to store analog signal, implement voltage‐charge redistribution, or conduct threshold voltage variation compensation. Selecting appropriate capacitors among the options of MOS (metal‐oxide‐semiconductor) capacitors, MIM (metal‐insulator‐metal) capacitors, MOM (metal‐oxide‐metal) capacitors need to consider performance, yield, and cost, besides footprint requirement that is determined by the display resolution, panel size, and pixel pitch. In this paper, nMOS (n‐typed MOS) capacitor and DMOS (depletion MOS) capacitors are analyzed comprehensive

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Chao, Yang. "Research on the Failure Characteristics of Porous Ceramic Capacitor Based on Numerical Simulation Technology." Applied Mechanics and Materials 716-717 (December 2014): 1212–16. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1212.

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In the electronics industry, people has higher and higher demand for the performance of electronic products, but the requirement of volume is more and more small, it will promote the electronic products toward the direction of miniaturization. Porous ceramic capacitor is one of the most commonly used small electronic devices, but the capacitor thermal failure problem is always a difficult problem plagued capacitor design. This paper establishes the mathematical model of porous ceramic capacitors failure stress, and ABAUQS software is introduced to the failure simulation calculation process of

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Al-Wesabi, Ibrahim, Zhijian Fang, Zhiguo Wei, and Hanlin Dong. "Direct Sliding Mode Control for Dynamic Instabilities in DC-Link Voltage of Standalone Photovoltaic Systems with a Small Capacitor." Electronics 11, no. 1 (2022): 133. http://dx.doi.org/10.3390/electronics11010133.

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Large electrolytic capacitors used in grid-connected and stand-alone photovoltaic (PV) applications for power decoupling purposes are unreliable because of their short lifetime. Film capacitors can be used instead of electrolytic capacitors if the energy storage requirement of the power conditioning units (PCUs) is reduced, since they offer better reliability and have a longer lifetime. Film capacitors have a lower capacitance than electrolytic capacitors, causing enormous frequency ripples on the DC-link voltage and affecting the standalone photovoltaic system’s dynamic performance. This rese

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Hachlowski, Jakub, and Robert Stala. "Novel Converter for Voltage Balance in Series-Connected Capacitors and Batteries." Power Electronics and Drives 3, no. 1 (2018): 65–74. http://dx.doi.org/10.2478/pead-2018-0011.

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Abstract This paper presents a novel concept of a circuit for voltage balance of three series-connected capacitors or batteries, as well as the research results. The problem is related to the control of voltage sharing on series capacitors, supercapacitors or battery banks in energy storage systems or direct current (DC)-link of four-level neutral-point-clamped inverters. The proposed circuit is a switched-capacitor (SC) resonant converter composed of a single capacitor and seven transistor switches. Control of the converter makes it possible to transfer energy between any capacitors, by switc

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Zillgen, H., M. Stenzel, and W. Lohwasser. "New Niobium Capacitors with Stable Electrical Parameters." Active and Passive Electronic Components 25, no. 2 (2002): 147–53. http://dx.doi.org/10.1080/08827510212339.

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The replacement of the anode material in tantalum capacitors by a new generation of high CV niobium powders offers the possibility to get an economical alternative to tantalum for a wide range of applications. Due to the high CV potential of niobium powder there is also an alternative to low voltage aluminum electrolytic capacitors. We developed a new niobium capacitor which shows stable electrical values. By optimizing the structure of the dielectric and the cathodic layers as well as the process parameters we gained a capacitor which can be used up to105 °C. Electrical characteristics and li

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Li, Yichen, Zhiqiang Rao, Ziyi Li, and Lu Ding. "Research on Fault Location Method of Track Circuit Compensation Capacitor Based on Probabilistic Neural Network." Architecture Engineering and Science 3, no. 2 (2022): 93. http://dx.doi.org/10.32629/aes.v3i2.822.

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Compensation capacitor is an important component for extending the signal transmission of track circuit, and its safe operation is very important to the transportation business of rail transit. According to the difficulty of diagnosing the fault of compensation capacitor, a fault location model of compensation capacitor based on probabilistic neural network is established. Firstly, the influence of compensation capacitors on the current curve is analyzed from the two aspects of the failure reasons of compensation capacitors and the influence on signal transmission. Then, according to the param

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