Journal articles: 'Inductor capacitor'

1

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 (February 11, 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 and the inductor core, which determine their frequency properties, structure and parameters of the elements of the equivalent circuit, is established. The features of the design of line radio interference filter taking into account the parasitic parameters of the inductors and capacitors of line radio interference filter, found as a result of the synthesis of equivalent electric circuits of the inductors and capacitors in a wide frequency range of 150 kHz 30 MHz.

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2

Singh, Amrita, Manoj Kumar Jain, and Subodh Wairya. "Novel Lossless Grounded and Floating Inductance Simulators Employing a Grounded Capacitor Based on CC-CFA." Journal of Circuits, Systems and Computers 28, no. 06 (June 12, 2019): 1950093. http://dx.doi.org/10.1142/s0218126619500932.

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Simulation of inductors has been a very popular area of analog circuit research and the alternative choice for realizing inductor-based circuits in integrated circuits. In this paper, lossless, grounded and floating inductor topologies using current-controlled-current-feedback amplifier (CC-CFA) with single grounded capacitor are presented. The proposed topologies can be tuned electronically by changing the biasing current of the CC-CFA. Two topologies for grounded inductor simulator employ two CC-CFA and one grounded capacitor. One topology for floating inductor simulator employs three CC-CFA and one grounded capacitor. The performance of the grounded and floating inductor simulators are demonstrated on resonant circuits. The theoretical analysis is verified by PSPICE simulation results.

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NOGALES, M. CALCINA. "A QUANTUM-MECHANICAL MODEL FOR AN LC CIRCUIT WITH ELASTIC CAPACITOR." Modern Physics Letters B 27, no. 18 (July 11, 2013): 1350138. http://dx.doi.org/10.1142/s0217984913501388.

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In this paper, we consider a quantum-mechanical LC circuit connected to a periodic source and with elastic capacitor. In the limit of negligible inductor energy, we present explicitly an exact solution for the wave function and spectrum of the spring-capacitor-source system. Considering the inductor energy as a perturbative term, the time-dependent probability amplitudes for the complete system are derived. We show that the mechanical degrees of freedom lead a suppression of the capacitor's charging/discharging process. Finally, we show the existence of a class of memristive component due to charge discreteness.

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4

Sung, Youngje. "A Novel Dual-Mode Dual-Band Bandpass Filter Based on a Single Ring Resonator." Journal of Electromagnetic Engineering and Science 20, no. 2 (April 30, 2020): 91–95. http://dx.doi.org/10.26866/jees.2020.20.2.91.

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In this paper, a dual-mode bandpass filter that operates in two different bands is proposed. A circular patch with a small circular hole is set as the basic resonator, and, as the circular hole moves, the linewidth of the ring resonator becomes non-uniform. Consequently, the ring resonator is structurally asymmetric and exhibits a dual-mode characteristic. A gap is formed in the middle of the resonator, a pair of inductors and capacitors is applied to the gap, and the proposed dual-mode structure operates as a dual-band filter. The first resonant frequency f1 is determined by the inductor and capacitor values, and the second resonant frequency f2 is determined by the capacitor values. In addition, the frequency ratio (f2/f1) can be adjusted by an appropriate combination of inductor and capacitor values.

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Blaž, Nelu, Goran Mišković, Andrea Marić, Mirjana S. Damnjanović, Goran Radosavljević, and Ljiljana Živanov. "Various Designs of Meander Inductor and their Influence on LC Resonant Displacement Sensor." Key Engineering Materials 543 (March 2013): 235–38. http://dx.doi.org/10.4028/www.scientific.net/kem.543.235.

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This paper deals with various configurations of meander inductor and their influence on characteristics of passive LC displacement sensor. Passive techniques use LC resonator to measure the parameters of interest remotely without an on-board power supply. Developed LC sensor comprises a fixed meander inductor and a movable module of mender inductor - interdigital capacitor resonant circuit, thereby causing the sensor resonant frequency to be displacement - dependent. The inductor and sensor circuits have been fabricated in PCB technology. The main goal was to find the optimal position for measurement connection pads on fixed meander inductor PCB as well as position of connection line between mender inductor and interdigital capacitor on PCB board with LC circuit. Measurements were realized on Impedance Analyzer (HP4191A) in frequency range from 10 MHz to 30 MHz, with 100 kHz step for each configuration of meander inductor. As results of these measurements the best configuration and the best sensor sensitivity for both mender inductors was determined.

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Mahesh Gowda, N. M., and S. S. Parthasarathy. "Selection of Inductor and Snubber Capactor to Optimize the Size and Efficiency of DC-DC Switching Power Converter." Asian Journal of Engineering and Applied Technology 7, no. 1 (May 5, 2018): 49–52. http://dx.doi.org/10.51983/ajeat-2018.7.1.977.

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This paper presents a selection of inductor and snubber capacitor in non-isolated synchronous DC-DC switching power converter. The circuit is made to operate in Synchronous Discontinuous Conduction Mode (SDCM)/Forced Continuous Conduction Mode (FCCM) of operation for minimum inductor value, to reduce the size, weight and cost of the converter. The turn off loss of the switch induced by SDCM of operation is minimized by connecting snubber capacitor across the transistor switch. Before the switch is turned ON, snubber capacitor requires certain amount of energy must be stored in the inductor to discharge the capacitor energy [1]. The question is how much capacitor and inductor value is required. A series of MATLAB script are executed to find minimum inductor value for FCCM of operation and to select snubber capacitor for maximum efficiency. Complementary gate signals are used to control the ON and OFF of main and auxiliary switch. SDCM of operation due to complementary control gate signal scheme, minimum turn on loss of the transistor switch and low diode reverse recovery loss are achieved. Thus the Zero Voltage Resonant Transition (ZVRT) of transistor switch is realized, both turn on and turn off loss is minimized and also removes the parasitic ringing in inductor current.

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7

Suzdalenko, Alexander, Janis Zakis, Pavels Suskis, and Leonids Ribickis. "Bidirectional single-loop current sensorless control applied to NPC multi-level converter considering conduction losses." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (December 1, 2020): 1945. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp1945-1957.

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The current feedback is considered as unavoidable part of most control system driving power electronic converters. However, it is possible to eliminate the use of current sensor, if properly calculated volt-second balance is applied to input inductor. This paper describes the implementation of current sensorless control technique applied to neutral point clamped multi-level converter, where only voltage control-loop is used to stabilize internal capacitors voltage, while inductor’s current is shaped by means of current sensorless control block in both discontinuous and continuous current modes. The capacitor voltage balancing is implemented by means of delta-controller that selects alternative capacitor in respect to main switching scheme. Finally, the analytical study of proposed solution is verified with simulation results.

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Bimali, Bibek, Sushil Uprety, and Ram Prasad Pandey. "VAR Compensation on Load Side using Thyristor Switched Capacitor and Thyristor Controlled Reactor." Journal of the Institute of Engineering 16, no. 1 (April 12, 2021): 111–19. http://dx.doi.org/10.3126/jie.v16i1.36568.

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Generally, AC loads are the inductive loads which are reactive in nature. These loads, thus, demand and draw reactive power from the supply source. If these loads draw large lagging current from the source, this will cause excessive voltage drop in the line, which can even cause the voltage collapsing in the line itself if the drop in the line is excessively high. VAR compensation means efficient management of reactive power locally to improve the performance of AC power systems. In this paper, Static VAR Compensator, using TSC (Thyristor Switched Capacitor) and TCR (Thyristor Controlled Reactor), is designed and simulated in MATLAB to maintain the power factor of power system nearly to unity at all times. TSC and TCR are basically shunt connected capacitors and inductor respectively whose switching (of capacitors) and firing angle control (of inductor) operations are carried out using thyristors. The purpose of capacitors is to supply lagging VAR as per the demand by the connected loads and the overcompensation due to excess VAR generated by the discrete set of turned on capacitors are absorbed by the adjustable inductive reactance of the inductor in TCR branch through firing angle control mechanism.

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9

Freeborn, Todd J., Brent Maundy, and Ahmed Elwakil. "Fractional Resonance-BasedRLβCαFilters." Mathematical Problems in Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/726721.

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We propose the use of a fractional order capacitor and fractional order inductor with orders0≤α, β≤1, respectively, in a fractionalRLβCαseries circuit to realize fractional-step lowpass, highpass, bandpass, and bandreject filters. MATLAB simulations of lowpass and highpass responses having orders of(α+β)=1.1, 1.5, and 1.9 and bandpass and bandreject responses having orders of 1.5 and 1.9 are given as examples. PSPICE simulations of 1.1, 1.5, and 1.9 order lowpass and 1.0 and 1.4 order bandreject filters using approximated fractional order capacitors and fractional order inductors verify the implementations.

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10

Kasasbeh, Abdalkreem, Burak Kelleci, Salih Baris Ozturk, Ahmet Aksoz, and Omar Hegazy. "SEPIC Converter with an LC Regenerative Snubber for EV Applications." Energies 13, no. 21 (November 3, 2020): 5765. http://dx.doi.org/10.3390/en13215765.

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A Single-Ended Primary-Inductor Converter (SEPIC) converter with an Inductor-Capacitor (LC) regenerative snubber is proposed to reduce Electromagnetic Interference (EMI) for Electric Vehicle (EV) applications. The switching energy is transferred through a capacitor to an inductor which is coupled to SEPIC inductors. This technique reduces the number of components and also returns some of switching energy to SEPIC converter. The mathematical analysis and optimization of LC snubber with respect to number of turns is also presented. Spice simulations and experimental results are provided to verify its performance. The proposed LC regenerative snubber reduces the peak voltage by 16 V on the switching transistor during the switching transient. It is also indicated that 8 dB reduction is achieved in the EMI measurements at ringing frequency and 10 dB reduction at high frequency band.

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11

Ramasamy, Palanisamy, Vijayakumar Krishnasamy, Mohamed Ali Jagabar Sathik, Ziad M. Ali, and Shady H. E. Abdel Aleem. "Three-Dimensional Space Vector Modulation Strategy for Capacitor Balancing in Split Inductor Neutral-Point Clamped Multilevel Inverters." Journal of Circuits, Systems and Computers 27, no. 14 (August 23, 2018): 1850232. http://dx.doi.org/10.1142/s0218126618502328.

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Capacitor imbalance is one of the major drawbacks of a neutral-point clamped multilevel inverter (NPC-MLI). The capacitor imbalance rises due to the nonuniform switching, nonideal DC link capacitors, improper commutation, and various asymmetrical phase currents in switching states. The imbalance can be minimized by using proper switching using a redundancy switching method and avoiding the usage of medium vectors. The computational cost of this system is to be decided by the level of the inverter system. This paper presents a comprehensive three-dimensional space vector modulation (3D-SVM) strategy to eliminate the imbalance in the DC link capacitor voltage, which is across the applied input DC source. The technique is easy to implement without using any trigonometric functions, lookup tables, or angle determinations. This proposed scheme has been verified using MATLAB Simulink and authenticated using field-programmable gate array (FPGA) controller.

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12

Marinis, Thomas F., and Joseph W. Soucy. "Implementing Inductor Function with Vibrating Capacitor Structures." Journal of Microelectronics and Electronic Packaging 11, no. 2 (April 1, 2014): 57–63. http://dx.doi.org/10.4071/imaps.409.

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One of the most common uses of inductors is in filtering electrical signals to remove oscillations over selected frequency ranges. In this application, they are combined with capacitors to build resonant circuits to either block or dissipate signals at the unwanted frequencies. Similar, but larger current capacity filters are used to eliminate oscillatory ripple voltages from DC power supply outputs. Inductors are also essential components in buck converter type power supplies in which they store energy supplied by an oscillatory source to power a circuit, which generates a constant voltage. Inductors of various constructions have proven highly successful in all of these applications, but their performance is not ideal. For one, they dissipate the energy that is stored in them via a number of mechanisms. The conductivity of the wire comprising their windings is finite, so they suffer Ohmic losses. Their magnetic fields induce eddy currents within their cores and dissipative currents in surrounding circuit elements. Inductors also exhibit parasitic capacitance between their windings, which can give rise to dielectric losses. Because of these loss mechanisms, the quality factor of an inductor, which is its time average ratio of stored to dissipated energy, is typically less than a few hundred. By contrast, mechanical resonators, fabricated from single crystal silicon, attain quality factors that are orders of magnitude higher. Hence, mechanical filters could be made with sharper roll offs and smaller bandwidths than inductor based filters. They would also be more efficient in power supply applications. Inductors are also relatively heavy components, when compared with capacitors, resistors, and integrated circuits, due to their high content of copper and iron. A mechanical oscillator could be made significantly lighter than an inductor that is capable of storing the same amount of energy. We have been investigating mechanical oscillators that use flat beams, suspended at both ends above substrates with electrode patterns that form a capacitive dive to excite oscillations in the beam. We are examining a number of configuration variables, including beam geometry, mass distribution and excitation loading. We use finite element analysis and lumped parameter models to characterize beam deflection and MatLab scripts to predict performance in electrical circuits. We are also preparing to fabricate our first design for testing.

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13

Marinis, Thomas F., and Joseph W. Soucy. "Implementing Inductor Function with Vibrating Capacitor Structures." International Symposium on Microelectronics 2013, no. 1 (January 1, 2013): 000354–60. http://dx.doi.org/10.4071/isom-2013-tp53.

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One of the most common uses of inductors is in filtering electrical signals to remove oscillations over selected frequency ranges. In this application, they are combined with capacitors to build resonant circuits to either block or dissipate signals at the unwanted frequencies. Similar, but larger current capacity filters are used to eliminate oscillatory ripple voltages from DC power supply outputs. Inductors are also essential components in buck converter type power supplies in which they store energy supplied by an oscillatory source to power a circuit, which generates a constant voltage. Inductors of various constructions have proven highly successful in all of these applications, but their performance is not ideal. For one, they dissipate the energy that is stored in them via a number of mechanisms. The conductivity of the wire comprising their windings is finite, so they suffer Ohmic losses. Their magnetic fields induce eddy currents within their cores and dissipative currents in surrounding circuit elements. Inductors also exhibit parasitic capacitance between their windings, which can give rise to dielectric losses. Because of these loss mechanisms, the quality factor of an inductor, which is its time average ratio of stored to dissipated energy, is typically less than a few hundred. By contrast, mechanical resonators, fabricated from single crystal silicon, attain quality factors that are orders of magnitude higher. Hence, mechanical filters could be made with sharper roll offs and smaller bandwidths than inductor based filters. They would also be more efficient in power supply applications. Inductors are also relatively heavy components, when compared to capacitors, resistors and integrated circuits, due to their high content of copper and iron. A mechanical oscillator could be made significantly lighter than an inductor that is capable of storing the same amount of energy. We have been investigating mechanical oscillators that use flat beams, suspended at both ends above substrates with electrode patterns that form a capacitive dive to excite oscillations in the beam. We are examining a number of configuration variables, including beam geometry, mass distribution and excitation loading. We use finite element analysis and lumped parameter models to characterize beam deflection and MatLab scripts to predict performance in electrical circuits. We are also preparing to fabricate our first design for testing.

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14

Prabhakar, Gyan, Abhishek Vikram, Rajendra Pratap, and R. K. Singh. "MOS capacitor based Dickson charge pump and ripple cancellation techniques using an LC circuit." International Journal of Knowledge-based and Intelligent Engineering Systems 24, no. 4 (January 18, 2021): 311–21. http://dx.doi.org/10.3233/kes-190142.

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This paper proposes a new architecture using integrated inductor and MOS capacitor based on Dickson charge pump associated with two parallel LC circuit after the first stage and output stage which cancel the ripple voltage that is generated in the output stage. In this circuit, the MOS capacitor as used instead of pumping capacitor, which helps in reducing the circuit Silicon area. Efficiency up to 80–90% can be achieved by reducing the parasitic effects and by using a MOS capacitor. The efficiency conversion and voltage gain increase or decreases depending on inductor and capacitor values. Vt drop loss is managed using high voltage clock. It shows that 3.5 V output voltage is generated from input voltage of 1.0 V with five stages of MOS capacitor (used as Pumping capacitor) in working frequency of 100 MHz the simulations were performed in Cadence Virtuoso platform with 0.18 μm CMOS process.

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Wang, Ya, Qiulin Tan, Lei Zhang, Baimao Lin, Meipu Li, and Zhihong Fan. "Wireless Passive LC Temperature and Strain Dual-Parameter Sensor." Micromachines 12, no. 1 (December 30, 2020): 34. http://dx.doi.org/10.3390/mi12010034.

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There is an increasing demand for bearing temperature and strain monitoring in high-speed rotating systems. This study proposes a new multiresonance, multiplexing, wireless, passive inductance capacitance (LC) temperature and strain sensor. The sensor has two capacitors connected at different locations (turns) on the same inductor to achieve simultaneous temperature and strain measurements. The plate capacitor is connected to the inner part of the inductor and the other interdigital capacitor is connected to the outer part of the inductor to form two LC loops. The structure of the sensor is optimized through High Frequency Structure Simulator (HFSS) simulations to realize frequency separation of the two parameters and avoid mutual interference between the two signals. The sensor is fabricated on a polyimide film using electroplating technology. The experimental results show that the temperature–strain sensor can operate stably from 25 °C to 85 °C with an average sensitivity of 27.3 kHz/°C within this temperature range. The sensor can detect strains in the range of 1000–5000 με with a strain sensitivity of 100 Hz/με at 25 °C. Therefore, the proposed wireless passive LC temperature-strain sensor exhibits stable performance. In addition, the use of a single inductor effectively reduces the sensor’s area. The flexible substrate provides advantageous surface conformal attachment characteristics suitable for monitoring high-temperature rotating parts in adverse environments.

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Fuada, Syifaul, Hakkun Elmunsyah, and Suwasono Suwasono. "Design and Fabrication of LC-Oscillator Tool Kits Based Op-Amp for Engineering Education Purpose." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 1 (January 1, 2016): 88. http://dx.doi.org/10.11591/ijeecs.v1.i1.pp88-100.

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In this paper, a proposed design, fabrication and testing of sine wave oscillator “LC” type (Hartley and Colpitts oscillator) has been performed using five approaches. The first approach proposed design is done theoretically using the basic theorems used to generate oscillations, such as the condition of oscillation criteria and determine the values of capacitor (C) and inductor (L) component, Secondly it is done using simulation technique (LTSpice IV), Thirdly the simulated design is implemented practically using IC OP-AMP 741 with passive elements such as resistors, capacitors and inductors by oscilloscope and frequency generator. Fourthly design the Hartley and colpitts tool kit by 2-D and 3-D, layouting the circuit by Eagle PCB design software then package into tool box which integrated each other. Finaly, the LC-oscillator tool kit was tested such as resistor, capasitor and inductor module and write the result into tables (for jobsheet data).

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Anwar, Radial, Mohammad Tariqul Islam, Norbahiah Misran, and Geri Gopir. "Development of VHF LC-Passive Filters for Multiband Transient Radio Telescope." IJAIT (International Journal of Applied Information Technology) 1, no. 02 (December 7, 2017): 89. http://dx.doi.org/10.25124/ijait.v1i02.1077.

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Filter is one of key module in a radio telescope system. This article present the development of VHF LC-passive filters meant to support a multiband antenna in a transient radio telescope system by reducing the bandwidth of each operating frequencies. The filters were developed by employing low-cost inductor and capacitor with low self-resonant frequency (SRF) an hence the characteristic are highly affected by the parasitic inductance of the capacitors an parasitic capacitance of the inductors. Therefore, general equation to develop an LC filters was no longer applicable in developing these filters. Nevertheless, three filters were successfully developed, operated at 38 MHz, 74 MHz and 152 MHz with relatively good quality factors up to of about 13.

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Lan, Kuibo, Fei Wang, Qijun Zhang, Zhenqiang Ma, and Guoxuan Qin. "Performance prediction of bended radio-frequency capacitors and inductors on plastic substrates using artificial neural network." Modern Physics Letters B 35, no. 17 (April 9, 2021): 2150288. http://dx.doi.org/10.1142/s0217984921502882.

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Flexible radio-frequency (RF) capacitors and inductors on the plastic substrates have been fabricated and characterized under mechanical bending conditions. A novel method to predict the RF performance for them on different bending states is demonstrated. Artificial neural network (ANN) shows good modeling accuracy for the flexible RF passive components with bending strains from dc to resonant frequency ([Formula: see text] GHz for the capacitor/inductor). More importantly, the automatically generated ANN model, with no need of repeatedly tuning the model parameters, has demonstrated the ability to predict the RF responses for the flexible capacitors and inductors under arbitrary bending conditions with only a few sets of experimental data. Once established, this model can automatically learn the structure of the input date and predict the actual results on specific bending state which can provide an original method to measure the performance for flexible electronics on even extreme bent radius. The ANN model indicates good potential for accurate design, characterization and optimization of the high-performance flexible electronics.

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Wang, Faqiang, Herbert Iu, and Jing Li. "A Novel Step-Up Converter with an Ultrahigh Voltage Conversion Ratio." Energies 11, no. 10 (October 10, 2018): 2693. http://dx.doi.org/10.3390/en11102693.

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A new step-up converter with an ultrahigh voltage conversion ratio is proposed in this paper. Two power switches of such a converter, which conduct synchronically, and its output voltage, which has common ground and common polarity with its input voltage, lead to the simple control circuit. No abrupt changes in the capacitor voltage and the inductor current of the proposed step-up converter mean that it does not suffer from infinite capacitor current and inductor voltage. Two input inductors with different values can still allow the proposed step-up converter to work appropriately. An averaged model of the proposed step-up converter was built and one could see that it was still fourth-order even with its five storage elements. Some theoretical derivations, theoretical analysis, Saber simulations, and circuit experiments are provided to validate the effectiveness of the proposed step-up converter.

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Wang, Yu, Jian Chen, and Chien-In Henry Chen. "Chebyshev Bandpass Filter Using Resonator of Tunable Active Capacitor and Inductor." VLSI Design 2017 (May 18, 2017): 1–12. http://dx.doi.org/10.1155/2017/5369167.

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A classic second-order coupled-capacitor Chebyshev bandpass filter using resonator of tunable active capacitor and inductor is presented. The low cost and small size of CMOS active components make the bandpass filter (BPF) attractive in fully integrated CMOS applications. The tunable active capacitor is designed to compensate active inductor’s resistance for resistive match in the resonator. In many design cases, more than 95% resistive loss is cancelled. Meanwhile, adjusting design parameter of the active component provides BPF tunability in center frequency, pass band, and pass band gain. Designed in 1.8 V 180 nanometer CMOS process, the BPF has a tuning frequency range of 758–864 MHz, a controllable pass band of 7.1–65.9 MHz, a quality factor Q of 12–107, a pass band gain of 6.5–18.1 dB, and a stopband rejection of 38–50 dB.

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Raschepkin, A. P., I. P. Kondratenko, A. N. Karlov, and R. S. Kryshchuk. "INFLUENCE OF A U-SHAPED MAGNETIC CORE OF AN INDUCTOR WITH TWO COILS ON EDDY CURRENTS OF THIN-WALLED NON-MAGNETIC METAL PLATES IN PROCESS OF MAGNETO-PULSED TREATMENT." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 59 (September 20, 2021): 20–27. http://dx.doi.org/10.15407/publishing2021.59.020.

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A review of the literature on the use of pulsed electric current to create electro-plastic effect in metal parts is performed. Inductor with a U-shaped magnetic core and pulsed current is investigated for processing thin-walled metal plates with rectilinear welds. With a saturated magnetic core relative magnetic permeability can be low, so using a magnetic core can be impractical. The aim of the work is to establish the influence of a magnetic core of an induction system on voltage, current and magnetic forces when reaching the eddy current density of 109 A/m2 in the weld of a non-magnetic thin-walled metal plate. A two-dimensional model of the induction system with and without the magnetic core is investigated here. Simulation of the distribution of electromagnetic fields with the reduction of the parameters of the two-dimensional model to three-dimensional is performed. A capacitor charged to a certain voltage is a source of pulsed currents in inductor winding. The equation of the electric circuit for determining the current in the inductor’s winding is solved. The influence of the dimensions of the magnetic core on voltage and currents in the inductor’s winding is determined. The influence of the magnetic core on the transients of voltages of capacitor and inductor, the currents in the winding and the weld of the metal non-magnetic plate, the magnetic forces in the weld is studied. The influence of the magnetic core on distribution of magnetic field strength, currents and magnetic forces on the surface of the plate in the area of the weld is studied. Ref. 13, Fig. 4, Table.

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López Lezama, Jesús María, David Esteban Betancur Herrera, Juan Bernardo Cano, and Nicolás Muñoz Galeano. "Impact of fractional order over time response for DC-DC converters with fractional capacitors." Scientia et Technica 25, no. 2 (June 30, 2020): 234–39. http://dx.doi.org/10.22517/23447214.23591.

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This paper analyses the impact of fractional orders of derivatives over the response of DC-DC converters which includes fractional capacitors and their parasitic losses for a more realistic approximation of the converter. A fractional model is proposed and is applied for a Boost DC-DC with a fractional capacitor in its DC bus. The fractional model is obtained using Kirchhoff laws and applying the conventional switching model. Then, the resulting set of fractional differential equations is in the Caputo’s sense and was solved using Wavelets method. Solutions were appropriately shown using 3D representations, varying the duty cycle and the fractional order to determine the behaviour of the fractional capacitor voltage, inductor current and output voltage. Ripples and steady state values were determined. Results show high dependence of the fractional order in the variables related to the voltage in the fractional capacitor. With respect to the current, results show that the fractional order does not significantly affect its steady state and ripple.

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Khan, Iqbal A., and Mehmood H. Zaidi. "A Novel Ideal Floating Inductor Using Translinear Conveyors." Active and Passive Electronic Components 26, no. 2 (2003): 87–89. http://dx.doi.org/10.1080/0882751031000073887.

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An ideal floating inductor circuit using translinear conveyors is introduced. The floating inductor simulator uses two translinear conveyors and a single capacitor in its realization. The circuit provides the current controlled ideal floating inductance without any component matching constraints. Simulation results on the floating inductor simulator verify the theory

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Luo, Kaifa, Rui Yu, and Hongming Weng. "Topological Nodal States in Circuit Lattice." Research 2018 (September 2, 2018): 1–10. http://dx.doi.org/10.1155/2018/6793752.

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The search for artificial structure with tunable topological properties is an interesting research direction of today’s topological physics. Here, we introduce a scheme to realize topological nodal states with a three-dimensional periodic inductor-capacitor (LC) circuit lattice, where the topological nodal line state and Weyl state can be achieved by tuning the parameters of inductors and capacitors. A tight-binding-like model is derived to analyze the topological properties of the LC circuit lattice. The key characters of the topological states, such as the drumhead-like surface bands for nodal line state and the Fermi arc-like surface bands for Weyl state, are found in these systems. We also show that the Weyl points are stable with the fabrication errors of electric devices.

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Bhat, Harish S., and Braxton Osting. "2-D Inductor-Capacitor Lattice Synthesis." IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 30, no. 10 (October 2011): 1483–92. http://dx.doi.org/10.1109/tcad.2011.2159605.

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Pati, Akshaya K., and Nirod C. Sahoo. "A super-twisting sliding mode observer for boost inverter-based hybrid photovoltaic -battery system control." Transactions of the Institute of Measurement and Control 42, no. 12 (March 5, 2020): 2139–54. http://dx.doi.org/10.1177/0142331220906964.

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This paper proposes an observer-based control scheme for a three-phase differential boost inverter in a hybrid PV-battery system. In a conventional control scheme for three-phase differential boost inverter (DBI)-based PV system, the measurements of input inductor current and voltage across output capacitors are required for obtaining the desired voltage at the load end. In a typical three-phase differential boost inverter operation, four voltage sensors and seven current sensors are required to achieve the desired AC voltage. In this paper, an observer-based strategy for elimination of these sensors without compromising power quality is reported. For estimation of boost inverter inductor current and output capacitor voltage, only DC-link capacitor voltage and the load currents are measured. A super-twisting sliding mode observer is used for estimation of the states of the boost inverter. A comparative study between the first-order sliding mode observer and super-twisting sliding mode observer is also presented. The simulation and experimental results show that the proposed observer-based control scheme works satisfactorily under various operating conditions such as sudden change of load, changes in solar insolation, and also under unbalanced load conditions.

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Zhu, Heng-Tian, Ye Chen, Yi-Feng Xiong, Fei Xu, and Yan-Qing Lu. "A Flexible Wireless Dielectric Sensor for Noninvasive Fluid Monitoring." Sensors 20, no. 1 (December 27, 2019): 174. http://dx.doi.org/10.3390/s20010174.

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A flexible wireless dielectric sensor is presented here for noninvasively monitoring the permittivity and conductivity of fluids, based on resistor–inductor–capacitor (RLC) resonant circuit and capacitively coupled contactless conductivity detection (C4D) technique. The RLC sensor consists of one single-turn inductor and one interdigital capacitor. The resonant frequency of the device is sensitive to the surrounding environment, thanks to the electric field leaked out between the interdigital capacitor electrodes. Through the high-frequency structure simulator (HFSS) simulation, and experiments on ethanol/water solutions and NaCl solutions, it was confirmed that a fluid’s permittivity and conductivity could be detected by the return loss curve (S11). With great repeatability and stability, the proposed sensor has potential for broad applications, especially in wearable low-cost smart devices.

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Zhang, Sheng Guo, and Xiao Ping Dang. "Proof and Application of Complex Impedance of Inductor and Capacitor." Applied Mechanics and Materials 568-570 (June 2014): 1213–16. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.1213.

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This paper aims at proving the complex impedance of the inductor and capacitor elements and applying the proved complex impedance concept to directly obtain the transfer function model of the complicated circuit network. Based on Laplace Transformation method, the complex impedances of the inductor and capacitor elements are proved. Using the proved complex impedances and the equivalent complex impedances in series and in parallel, both the transfer functions of the passive and active circuit networks are modeled. This facilitates the transfer function modeling of the complicated circuit network very much.

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Chang, Yuen-Haw, and Yu-Kai Lin. "Design and Analysis of High-Gain Switched-Capacitor-Inductor-Based Inverter for Step-Up DC-AC Conversion." Journal of Circuits, Systems and Computers 27, no. 02 (September 11, 2017): 1850030. http://dx.doi.org/10.1142/s0218126618500305.

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This paper presents the analysis, design and implementation of a closed-loop high-gain switched-capacitor-inductor-based inverter (SCII) by combining a sinusoidal pulse-width-modulation (SPWM) controller and phase generator for realizing the step-up inversion and regulation. The power part is composed of two cascaded sub-circuits from source [Formula: see text] to output voltage [Formula: see text]: (i) SCI booster (one resonant inductor, 4 pumping capacitors and 7 switches regulated by phase generator) and (ii) DC-link inverter (one filter capacitor and 4 switches controlled by SPWM), in order to provide a wide step-up output range of [Formula: see text] as: [Formula: see text] for DC-AC conversion, where [Formula: see text] ([Formula: see text]) is the ratio cycle of charging the inductor (e.g., the maximum of [Formula: see text] reaches 13.8 times voltage of [Formula: see text] while [Formula: see text]). Here, by using the phase generator, the maximum of step-up gain can be regulated for fitting the need of AC load. Further, the SPWM controller is employed to enhance regulation capability for the different amplitude and frequency of output, as well as robustness to loading variation. Some theoretical analysis and design are included: formulation, steady-state analysis, conversion ratio, power efficiency, inductance and capacitance selection, circuit stability and control design. Finally, the performance of SCII is simulated, and verified experimentally on the implemented prototype circuit, and the results are illustrated to show the efficacy of this scheme.

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Ahmad, Syed Sajid, Cherish Bauer-Reich, Fred Haring, Greg Strommen, Kevin Mattson, and Aaron Reinholz. "Development of Passives on Sapphire Backside." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, DPC (January 1, 2014): 001408–21. http://dx.doi.org/10.4071/2014dpc-wa34.

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This work is an effort to demonstrate the convenient use of sapphire backside for placing support circuitry for device densification. Laser micromachining is used to form capacitors and inductors on the backside of sapphire. After their fabrication, they can be connected to the circuitry on the front side of sapphire using through-sapphire vias. Antenna, inductor and capacitor design variations have been formed on the backside of sapphire. Here we describe the development work carried out to form such elements on sapphire backside. Elements were designed and their electrical attributes were simulated. The designed elements were then fabricated on sapphire by laser patterning sputtered and plated surfaces. Physical dimensions of the fabricated elements were compared with designed elements. Electrical measurements on the fabricated elements were compared with initial designs and simulations.

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Lin, Bor-Ren. "Analysis of a Series‑Parallel Resonant Converter for DC Microgrid Applications." Processes 9, no. 3 (March 18, 2021): 542. http://dx.doi.org/10.3390/pr9030542.

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An input-series output-parallel soft switching resonant circuit with balance input voltage and primary-side current is studied and implemented for direct current (DC) microgrid system applications. Two resonant circuits are connected with input-series and output-parallel structure to have the advantages of low voltage stresses on active devices and low current stresses on power diodes. A balance capacitor is adopted on high voltage side to balance two input capacitor voltages. The LLC (inductor–inductor–capacitor) resonant circuit cells are employed in the converter to have soft switching operation for power semiconductors. The magnetic coupling component is adopted on the primary-side to automatically realize current balance of the two resonant circuits. In the end, a laboratory hardware circuit is built and tested. Experiments demonstrate and prove the validity of the resonant converter.

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ALPASLAN, HALIL, and ERKAN YUCE. "BANDWIDTH EXPANSION METHODS OF INDUCTANCE SIMULATOR CIRCUITS AND VOLTAGE-MODE BIQUADS." Journal of Circuits, Systems and Computers 20, no. 03 (May 2011): 557–72. http://dx.doi.org/10.1142/s0218126611007451.

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In this paper, novel low and high frequency performance improvement techniques are proposed. High frequency performance improvement method is based on the single pole effect reduction/completely elimination by creating a corresponding zero while a low one is based on reduction/elimination of Z terminal parasitic resistors. Therefore, two grounded capacitance multipliers, three grounded inductor simulators, a floating inductor and a voltage-mode (VM) universal filter using second-generation current conveyors (CCIIs) are used to explain the developed methods. One of the grounded inductor simulators, floating simulated inductor and VM biquad are novel. Further, both of the new simulated inductors use a grounded capacitor; accordingly, they are suitable for IC fabrication. However, all the proposed circuits need a single matching condition. A number of simulations through PSPICE program and experimental tests are accomplished to demonstrate the workability, performance and effectiveness.

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Justo, Jackson J., and Francis A. Mwasilu. "Low Voltage Ride through Enhancement for Wind Turbines Equipped With DFIG under Symmetrical Grid Faults." Tanzania Journal of Engineering and Technology 37, no. 2 (June 30, 2018): 125–36. http://dx.doi.org/10.52339/tjet.v37i2.488.

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In modern power systems with significant penetration of wind-turbines (WTs), improvement of low voltage ride through (LVRT) capability of WTs equipped with doubly-fed induction generators (DFIGs) is an important issue. Thus, this paper proposes a low voltage ride through (LVRT) strategy, which comprise of a capacitor connected in series with an inductor both connected in parallel to a resistor. The configuration is then connected to a small series resistor via a pair of antiparallel-Thyristors. The circuit and its switching control scheme of the proposed LVRT circuit are designed to: minimize the transition times, maintain the RSC connection to the rotor-windings, and reduce oscillations of dc-link voltage. In this case, the capacitor is entitled to eliminate ripples generated in the rotor voltage while the inductor reduces the ripple in rotor current. Different fault conditions were studied to validate the performance of the proposed scheme using MATLAB/Simulink platform. Comparative results and analysis are presented with conventional LVRT strategies.

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Murali, D., and S. Annapurani. "Improvement of Static Voltage Gain of a Non-Isolated Positive Output Single-Switch DC-DC Converter Structure Using a Diode-Capacitor Cell." Mathematical Modelling of Engineering Problems 8, no. 4 (August 31, 2021): 583–90. http://dx.doi.org/10.18280/mmep.080411.

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There are different low switching stress non-isolated DC-DC power converter structures developed for Photo-Voltaic (PV) applications with a view to achieve high voltage conversion ratio. The work proposed in this research article investigates the performance analysis of a coupled inductor and diode-capacitor multiplier cell based non-isolated high gain single-switch DC–DC conversion scheme with a single-ended primary-inductor on the input side. The presented converter suitable for renewable energy applications has the merits such as continuous input current, high voltage conversion ratio, and reduced voltage stress across the power switch. The multiplier cell consisting of two diodes and two capacitors is mainly used to enhance the converter output voltage level. A MATLAB / SIMULINK model of the suggested topology has been developed to validate its performance. During the simulation of the converter, a DC voltage of 50 V was given at the input side. The load end received a DC voltage of approximately 900 V. Thus, through this study, it was found that the addition of diode-capacitor cell can significantly improve the static gain of the suggested converter. The findings of this research may serve as a base for future studies on improvement of voltage gain of DC-DC converters.

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Zaman, Haider, Xiancheng Zheng, Xiaohua Wu, Shahbaz Khan, and Husan Ali. "A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier." Electronics 7, no. 10 (October 19, 2018): 261. http://dx.doi.org/10.3390/electronics7100261.

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Since the parasitic voltage ringing and switching power losses limit the operation of active devices at elevated frequencies; therefore, a higher‐order inductor‐capacitor (LC) filter is commonly used, which offers extended attenuation above the cutoff frequency and thus, improves the total harmonic distortion (THD) of the amplifier. This paper applies the concept of integral sliding‐mode control to a fourth‐order class‐D amplifier. Two fixed‐frequency double integral sliding‐mode (FFDISM) controllers are proposed, where one uses the inductor current while the other involves the capacitor current feedback. Their equivalent control equations are derived, but from the realization viewpoint, the controller using the capacitor current feedback is advantageous and, therefore, is selected for final implementation. The performance of the proposed FFDISM controller for fourth‐order GaN class‐D amplifier is confirmed using simulation and experimental results.

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Premkumar, Manoharan, Umashankar Subramaniam, Hassan Haes Alhelou, and Pierluigi Siano. "Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation." Energies 13, no. 15 (August 1, 2020): 3960. http://dx.doi.org/10.3390/en13153960.

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A new non-isolated modified SEPIC front-end dc-dc converter for the low power system is proposed in this paper, and this converter is the next level of the traditional SEPIC converter with additional devices, such as two diodes and splitting of the output capacitor into two equal parts. The circuit topology proposed in this paper is formulated by combining the boost structure with the traditional SEPIC converter. Therefore, the proposed converter has the benefit of the SEPIC converter, such as continuous input current. The proposed circuit structure also improves the features, such as high voltage gain and high conversion efficiency. The converter comprises one MOSFET switch, one coupled inductor, three diodes, and two capacitors, including the output capacitor. The converter effectively recovers the leakage energy of the coupled inductor through the passive clamp circuit. The operation of the proposed converter is explained in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The required voltage gain of the converter can be acquired by adjusting the coupled inductor turn’s ratio along with the additional devices at less duty cycle of the switch. The simulation of the proposed converter under CCM is carried out, and an experimental prototype of 100 W, 25 V/200 V is made, and the experimental outcomes are presented to validate the theoretical discussions of the proposed converter. The operating performance of the proposed converter is compared with the converters discussed in the literature. The proposed converter can be extended by connecting voltage multiplier (VM) cell circuits to get the ultra-high voltage gain.

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Huang, Chia Wei, Ton Churo Huang, and Yih Guang Leu. "Stand-Alone Super Capacitor Charging System with the Design of Starting Protection." Advanced Materials Research 740 (August 2013): 403–7. http://dx.doi.org/10.4028/www.scientific.net/amr.740.403.

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This paper focuses on analyzing the problem that occurs when running a stand-alone super capacitor charging system, which is capable of working independently without relying on any external power supply. Components are easily damaged due to overloading. This occurs at the moment when the stand-alone super capacitor charging system switches on. To solve the problem, this paper not only finds the reason why the inductor current of the boost converter saturates at the switching moment, but also analyzes the waveforms of the inductor current at the switching moment. Finally, the verification of the circuit characteristics with an external stimulation was carried out with both experiments and simulation.

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Liu, Ruixin, Yifeng Wang, Qing Chen, Fuqiang Han, and Zhun Meng. "Entire Magnetic Integration Method of Multi-Transformers and Resonant Inductors for CLTLC Resonant Converter." Electronics 9, no. 9 (August 27, 2020): 1386. http://dx.doi.org/10.3390/electronics9091386.

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An entire magnetic integration methodology of high efficiency printed circuit board (PCB) winding transformer for CLTLC (capacitor-inductor-transformer-inductor-capacitor) resonant converter is presented. All magnetic components in the converter, including two resonant inductors and two transformers, are integrated into an improved EIE (E-type and I-type and E-type) core structure. According to the matrix transformer concept and uneven winding distribution, the novel structure can be obtained by introducing an air gap to the center core leg. Thus, the magnetizing inductance and leakage inductance of the transformer can be controlled easily through adjusting the air gap reluctances. In addition, both the detailed mathematical analysis and the reluctance model of the transformer have been studied. Furthermore, a four-layer printed circuit board winding structure is chosen. The related winding arrangement is also discussed in depth. Finally, a 1 kW prototype with the presented structure is implemented to verify the validity of the theoretical analysis. Experimental results demonstrate that the proposed structure guarantees high efficiency within the entire load range. Peak efficiency of 96.62% can be ensured.

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Chen, Chia Lin, Chih Huan Fang, Yuan Chao Niu, and Yaow Ming Chen. "Impact of Parasitic Capacitor to the GaN HEMT Devices." Applied Mechanics and Materials 764-765 (May 2015): 515–20. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.515.

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The objective of this paper is to evaluate the impact of the parasitic capacitor to the Gallium-Nitride (GaN) based high-electron-mobility transistor (HEMT). Because of the high switching frequency operation, the parasitic inductor has caught a lot of attention when the GaN HEMT is applied in the high power applications. However, the impact of parasitic capacitor to the GaN HEMT is not discussed in literatures. A prototype circuit is built and tested to evaluate the impacts of parasitic capacitor to the GaN HEMT performance. The results show that the parasitic capacitor can induce voltage spike and damage the GaN HEMT.

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Wang, Fei, Lijun Zhang, Hui Guo, and Xiayun Feng. "Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation." Energies 11, no. 11 (October 23, 2018): 2874. http://dx.doi.org/10.3390/en11112874.

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To understand different control loops that have been proposed to improve the quality of current into grid from the perspective of output impedance, control-loop-based output impedance enhancement of grid-tied inverters for harmonic suppression is proposed in this paper. The principle and generalized control loop deduction are presented for reshaping the output impedance. Taking a traditional LCL (Inductor-Capacitor-Inductor)-type inverter with dual-loop control as an example, different kinds of control loop topologies are derived step by step and further optimized for the implementation of the proposed principle. Consequently, the improved control consists of a filtering-capacitor voltage loop, and a grid current loop is found which can remove the existing inner capacitor current loop and therefore simplify the control. Finally, the effectiveness of the proposed control method is compared with the existing method and both are verified by simulations and experiments.

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Walther, Christoph, Giacomo Scalari, Mattias Beck, and Jérôme Faist. "Purcell effect in the inductor-capacitor laser." Optics Letters 36, no. 14 (July 11, 2011): 2623. http://dx.doi.org/10.1364/ol.36.002623.

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Tan, Qiulin, Mingliang Yang, Tao Luo, Wei Liu, Chao Li, Chenyang Xue, Jun Liu, Wendong Zhang, and Jijun Xiong. "A Novel Interdigital Capacitor Pressure Sensor Based on LTCC Technology." Journal of Sensors 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/431503.

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A novel passive wireless pressure sensor is proposed based on LTCC (low temperature cofired ceramic) technology. The sensor employs a passive LC circuit, which is composed of a variable interdigital capacitor and a constant inductor. The inductor and capacitor were fabricated by screen-printing. Pressure measurement is tested using a wireless mutual inductance coupling method. The experimental sensitivity of the sensor is about 273.95 kHz/bar below 2 bar. Experimental results show that the sensor can be read out wirelessly by external antenna at 600°C. The max readout distance is 3 cm at room temperature. The sensors described can be applied for monitoring of gas pressure in harsh environments, such as environment with high temperature and chemical corrosion.

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Platakis, Andrius, Vytautas Bleizgys, and Tadas Lipinskis. "THE INVESTIGATION OF SINUSOIDAL SINGLE PHASE VOLTAGE SOURCE INVERTER OUTPUT FILTER / IŠĖJIMO FILTRO TYRIMAS VIENFAZIO INVERTERIO SINUSINEI ĮTAMPAI FORMUOTI." Mokslas - Lietuvos ateitis 3, no. 1 (August 22, 2011): 68–72. http://dx.doi.org/10.3846/mla.2011.014.

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The results of output filter investigation of single phase sine voltage source inverter (VSI) are presented. The operating principle, construction and a most widely used topology of single phase voltage source inverter is discussed. The results obtained using modeling and experimental investigation are presented. The Total Harmonic Distortion of the inverter output voltage and maximal current of the output capacitor were analyzed using Matlab Simulink software. The 1 kW inverter prototype was built for experimental investigation. The inverter switches are realized using IGBT transistors. The toroidal iron powder core with distributed air gap was used as the core of the inductor. The experimental investigation of inductor core losses and maximal current of output filter capacitor were performed.

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Rodič, Miran, Miro Milanovič, Mitja Truntič, and Benjamin Ošlaj. "Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications." Energies 11, no. 11 (November 14, 2018): 3156. http://dx.doi.org/10.3390/en11113156.

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The paper presents a Switched-Capacitor Boost DC-DC Converter (SC-BC) which can be used in energy harvesting applications using thermoelectric generators (TEGs) with low output voltage, low power and a significant internal resistance. It consists of a switching capacitor circuit, where MOSFETs are used as switches, and a boost stage. The converter is a modification of a previously presented scheme in which diodes are used in the switched capacitor stage. A higher voltage gain and an increased efficiency can thus be achieved. The model of the converter was developed considering the internal resistance of the TEG and boost stage inductor. A comparison with the diode based converter is shown, with consideration of the TEG internal resistance. Calculation is presented of the main passive components. A control algorithm is also proposed and evaluated. It is based on a linearization approach, and designed for output voltage and inductor current control. The operation of both converter and control are verified with the simulation and experimental results.

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Karuppuswami, Saranraj, Saikat Mondal, Deepak Kumar, Amanpreet Kaur, and Premjeet Chahal. "Thin-film based passive RFID sensor tag for detection of packaged food volatiles." International Symposium on Microelectronics 2019, no. 1 (October 1, 2019): 000599–602. http://dx.doi.org/10.4071/2380-4505-2019.1.000599.

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Abstract In this paper, a near-field wireless thin-film coated RFID compatible sensor tag is presented for profiling packaged food volatiles at room temperature. The sensor tag consists of a thin-film coated interdigitated capacitor interrogated in two different configurations: (i) direct-wired configuration, and (ii) wireless configuration. Polyaniline (PANi) is chosen as the thin film to be coated on the interdigitated capacitor due to its specificity towards packaged food, detection of Ammonia. The sensitivity of the sensor is characterized at room temperature and at atmospheric pressure. In the direct-wired configuration, different concentration of Ammonia gas is introduced into an enclosed chamber and the conductivity across the film is measured. In the wireless configuration, an inductor is soldered across the interdigitated capacitor to form an inductor-capacitor (LC) resonant tank. The resonance frequency is wirelessly interrogated using an external pick-up coil (reader coil) and the frequency shift is monitored. The proposed sensor can detect as low as 3 ppm of Ammonia making it a highly sensitive sensor, and it can be easily adapted to monitor packaged food quality across the supply chain.

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Huh, Sungryul, and Dukju Ahn. "Optimum Receiver-Side Tuning Capacitance for Capacitive Wireless Power Transfer." Electronics 8, no. 12 (December 13, 2019): 1543. http://dx.doi.org/10.3390/electronics8121543.

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This paper reveals the optimum capacitance value of a receiver-side inductor-capacitor (LC) network to achieve the highest efficiency in a capacitive power-transfer system. These findings break the usual convention of a capacitance value having to be chosen such that complete LC resonance happens at the operating frequency. Rather, our findings in this paper indicate that the capacitance value should be smaller than the value that forms the exact LC resonance. These analytical derivations showed that as the ratio of inductor impedance divided by plate impedance increased, the optimum Rx capacitance decreased. This optimum capacitance maximized the TX-to-RX transfer efficiency of a given set of system conditions, such as matching inductors and coupling plates.

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Li, Yiyang, and Swamidoss Sathiakumar. "Single Switch DC-DC Boost Converter using Diode-Capacitor Module and Capacitor-Inductor-Capacitor Lift." Electric Power Components and Systems 48, no. 4-5 (March 15, 2020): 364–74. http://dx.doi.org/10.1080/15325008.2020.1793833.

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Kasiran, A. N., Asmarashid Ponniran, A. A. Bakar, and M. H. Yatim. "4-level capacitor-clamped boost converter with hard-switching and soft-switching implementations." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 1 (March 1, 2019): 288. http://dx.doi.org/10.11591/ijpeds.v10.i1.pp288-299.

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This paper presents parameters analysis of 4-level capacitor-clamped boost converter with hard-switching and soft-switching implementation. Principally, by considering the selected circuit structure of the 4-level capacitor-clamped boost converter and appropriate pulse width modulation (PWM) switching strategy, the overall converter volume able to be reduced. Specifically, phase-shifted of 120° of each switching signal is applied in the 4-level capacitor-clamped boost converter in order to increase the inductor current ripple frequency, thus the charging and discharging times of the inductor is reduced. Besides, volume of converters is greatly reduced if very high switching frequency is considered. However, it causes increasing of semiconductor losses and consequently the converter efficiency is affected. The results show that the efficiency of 2-level conventional boost converter and 4-level capacitor-clamped boost converter are 98.59% and 97.67%, respectively in hard-switching technique, and 99.31% and 98.15%, respectively in soft-switching technique. Therefore, by applying soft-switching technique, switching loss of the semiconductor devices is greatly minimized although high switching frequency is applied. In this study, passive lossless snubber circuit is selected for the soft-switching implementation in the 4-level capacitor-clamped boost converter. Based on the simulation results, the switching loss is approximately eliminated by applying soft-switching technique compared to the hard-switching technique implementation.

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Mnif, Mohamed Mokhlès, Hassene Mnif, and Mourad Loulou. "A Dual Frequency RF-DC Rectifier Circuit with a Low Input Power for Radio Frequency Energy Harvesting." Journal of Circuits, Systems and Computers 28, no. 03 (February 24, 2019): 1950048. http://dx.doi.org/10.1142/s0218126619500488.

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The energy-harvesting radio frequency (RF) can be an attractive alternative energy capable of replacing all or some of the board batteries. The RF waves are present in several high frequencies ([Formula: see text] GHz) and at low power (a few [Formula: see text]W). An energy-harvesting circuit designed must provide 1[Formula: see text]V voltage at minimum that is able to operate an actuator or a sensor. The RF-DC rectifier is the main component of an energy-harvesting circuit. This paper presents a new design RF-DC rectifier circuit using the MOSFET transistors, the capacitors and the inductors. Our proposed circuit is a combination of an Inductor–Capacitor–Inductor–Capacitor (LCLC) serie-parallel resonant tank (SPRT) and rectifier cascade using the Dynamic threshold Voltage Cancellation (DVC) and the technique of the Internal threshold Voltage Cancellation (IVC). Our proposed circuit operates in dual frequencies [Formula: see text][Formula: see text]GHz and [Formula: see text][Formula: see text]GHz with a low input power [Formula: see text][Formula: see text][Formula: see text]W ([Formula: see text][Formula: see text]dbm) and [Formula: see text][Formula: see text][Formula: see text]W ([Formula: see text][Formula: see text]dbm), respectively. This circuit gives a Power Conversion Efficiency (PCE) of 56.9% and an output voltage [Formula: see text][Formula: see text]V for the frequency 2.543[Formula: see text]GHz and a PCE of 62.6% and an output voltage [Formula: see text][Formula: see text]V for the frequency 4[Formula: see text]GHz. The pre-layout simulations were performed using the Advanced Design System (ADS) and the technology used is CMOS 0.18[Formula: see text][Formula: see text]m from TSMC. The simulations were performed on the proposed circuit composed by three stages.

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Sener, Eralp, and Gurhan Ertasgin. "Current-source 1-Ph inverter design for aircraft applications." Aircraft Engineering and Aerospace Technology 92, no. 8 (July 29, 2020): 1295–305. http://dx.doi.org/10.1108/aeat-10-2019-0194.

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Purpose This paper aims to present an inverter with a current-source input for 400 Hz avionic systems to have a system which removes DC-link capacitors and presents a high efficiency. Design/methodology/approach A battery-powered DC link inductor generates a constant-current source. A single high-frequency switch is used to provide a sinusoidally modulated current before the inverter. The output of the switch is “unfolded” by a thyristor-based H-bridge inverter to generate an AC output current. The system uses a CL low-pass filter to obtain a 400 Hz pure sine wave by removing pulse width modulation components. Findings Simulations and Typhoon HIL real-time experiments were performed with closed-loop control to validate the proposed inverter concept while meeting the critical standards of MIL-STD-704F. Originality/value This current source inverter topology is suitable for avionic systems that require 400 Hz output frequency. The topology uses small DC-link inductor and eliminates bulky capacitor which determines the inverter lifetime.

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Journal articles on the topic 'Inductor capacitor'

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