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Journal articles on the topic 'Inductor modelling'

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Author: Grafiati

Published: 10 December 2022

Last updated: 29 January 2023

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1

Muneeswaran, Dhamodaran, Jegadeesan Subramani, Thanapal Pandi, Navaneethan Chenniappan, and Meenatchi Shanmugam. "Modelling of Different On-chip Inductors for Radio Frequency Integrated Circuits." Proceedings of the Bulgarian Academy of Sciences 75, no. 10 (October 30, 2022): 1491–98. http://dx.doi.org/10.7546/crabs.2022.10.12.

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This paper presents a typical frequency-dependent modelling of different on-chip inductors for RFICs design problems. Modern RF circuits often feature on-chip inductors required by modern circuit design. A comparison of different inductor geometrics includes a planar spiral inductor and novel multilayer inductors are analyzed. An electromagnetic model with fewer assumptions than empirical equations and higher efficiency than full-field solvers would be welcome. So would facile comparisons of different inductor structures. This paper describes recent work on the electromagnetic modelling of on-chip inductor structures, applied to the comparison of inductor geometries, including the traditional spiral inductor and a novel multilayer inductor. The electromagnetic modelling of the investigative model is also presented.

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2

BARTOLI, M., N. NOFERI, A. REATTI, and M. K. KAZIMIERCZUK. "MODELLING WINDING LOSSES IN HIGH-FREQUENCY POWER INDUCTORS." Journal of Circuits, Systems and Computers 05, no. 04 (December 1995): 607–26. http://dx.doi.org/10.1142/s0218126695000370.

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A high-frequency model of iron-powder-core inductors is studied. The skin and proximity effects that cause the winding parasitic resistance to increase with the operating frequency are considered. The inductor self-resonance due to the parasitic capacitances is taken into account as well. The frequency response of the inductor model is compared to that of an experimentally tested iron-powder-core inductor. Expressions giving the ac resistance as a function of the operating frequency are given. These expressions allow for an accurate prediction of the inductor power loss over a wide frequency range. The measured and calculated values of the inductor impedance magnitude and phase, the real and imaginary parts of the inductor impedance, the inductance, and the inductor quality factor are plotted versus frequency and compared. Theoretical results were in good agreement with those experimentally measured. A design procedure for solid wire winding inductors based on the results of the inductor modelling is also given in the paper.

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3

Gruosso, Gimabattista, and Gabrielle Bellussi. "High frequency inductor modelling." Revue internationale de génie électrique 8, no. 1 (February 2005): 119–38. http://dx.doi.org/10.3166/rige.8.119-138.

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4

Dhamodaran, Muneeswaran, Subramani Jegadeesan, and Arunachalam Murugan. "Design of a multilayer on-chip inductor by computational electromagnetic modelling." Journal of Electrical Engineering 70, no. 5 (September 1, 2019): 379–85. http://dx.doi.org/10.2478/jee-2019-0069.

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Abstract This paper presents a design of typical multilayer on-chip inductor to determine the layout parameters of the desired inductance value of electromagnetic modeling. The inductance and quality factor of multilayer on-chip spiral inductors are determined by its layout parameters and technological parameters. These layout parameters must be optimized to obtain the maximum quality factor at the desired frequency of operation. An electromagnetic model with fewer assumptions than empirical equations and higher efficiency than full-field solvers would be welcome. So would facile comparisons of different inductor structures. This paper describes recent works on the electromagnetic modeling of on-chip inductor structures applied to the comparison of inductor geometries, including the traditional spiral inductor and a novel multilayer inductor. The electromagnetic modeling of the investigative model is presented. The modeling and simulation are implemented using the method of moments. To simulate the proposed algorithm, the EM Simulator software is used.

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5

Leuca, Teodor, Claudiu Mich-Vancea, and Stefan Nagy. "Optimal Solutions for Uniform Heating of a Non-Ferrous Bar by Electromagnetic Induction, Using Numerical Modeling." Materials Science Forum 670 (December 2010): 291–98. http://dx.doi.org/10.4028/www.scientific.net/msf.670.291.

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The paper intends to present the numerical modelling of the electromagnetic phenomena coupled with the thermal ones when processing the semi-finished products made up of non-ferrous alloy, through electromagnetic induction with the purpose of obtaining a homogenous heating of the pieces in the shortest time. The purpose of the numerical modelling in this paper is to check cheap solutions to homogenize the intensity of the magnetic field according to the geometry of the inductor, by using a magnetic field intensifier or if it is possible to use the motion of the pieces inside the inductor.

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6

HARROUZ, Abdelkader, Fadila TAHIRI, Fatiha BEKRAOUI, and Ibrahim BOUSSAID. "Modelling and Simulation of Synchronous Inductor Machines." Algerian Journal of Renewable Energy and Sustainable Development 01, no. 01 (June 15, 2019): 8–23. http://dx.doi.org/10.46657/ajresd.2019.1.1.2.

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This study focuses on the study of the compartment of the synchronous inductor machine with variable speed, fed by a threephase inverter. Several transients were treated by simulation (start unloading, introducing a torque load, reversing and speed setpoint change). Then engine cushion at both loss and when starting without the damper. In addition, robustness tests on the parametric variation of (MSRB) were also performed. Based on the results of simulations, the control technique studied makes it possible to obtain good dynamic and static performances and has a robustness with respect to the external perturbation and the parametric variation.

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7

Pichon, Hugot, Yves Lembeye, and Jean-Christophe Crebier. "Accurate Efficiency and Power Densities Optimization of Output Inductor of Buck Derived Converters." Applied Sciences 12, no. 18 (September 17, 2022): 9330. http://dx.doi.org/10.3390/app12189330.

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In this article, inductor loss models are developed based on the experimental characterization of off-the-shelf components. The modelling steps and techniques are described and validated. It is shown that the model exhibits fairly good accuracy over a large range of ripple current frequency and magnitude. Then, these models are used, as an illustration, in order to present the possible optimization process of the tradeoff between switching frequency-current ripple magnitude and output inductors value in the case of a Buck-derived converter. This optimization has shown that a large current ripple may lead to minimized losses in some cases. The developed modelling technique aims to represent Joules and iron losses, as well as DC and AC losses of inductors. It is not based on physical behaviour description but on mathematical equations based on a set of experimental characterizations. The modelling technique is not suitable for designing the component itself but is useful for selecting the best component value in the manufacturer’s series of components. Since it remains difficult with the manufacturer datasheet to estimate AC losses accurately with respect to frequency and ripple current magnitude, a specific characterization is carried out to complement the available data.

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8

PARIETTI, C., and J. RAPPAZ. "A QUASI-STATIC TWO-DIMENSIONAL INDUCTION HEATING PROBLEM I: MODELLING AND ANALYSIS." Mathematical Models and Methods in Applied Sciences 08, no. 06 (September 1998): 1003–21. http://dx.doi.org/10.1142/s0218202598000457.

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We consider a nonlinear elliptic–parabolic system modelling induction heating processes when a sinusoidal electromagnetic field is applied at the boundary of the inductor. The magnetic field satisfies an elliptic equation whereas the temperature equation is parabolic. These equations are coupled together due to the conductivities and the Joule effect. We show the existence of a weak solution to the corresponding problem and under additional assumptions, we study the uniqueness of the solution.

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9

Bezrukovs, V., Vl Bezrukovs, M. Konuhova, D. Bezrukovs, and A. Berzins. "Axial Flux Switching Permanent Magnet Alternator with External Magnetic Cores." Latvian Journal of Physics and Technical Sciences 59, s3 (June 1, 2022): 58–68. http://dx.doi.org/10.2478/lpts-2022-0025.

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Abstract The article introduces the results of studying the magnetic field distribution in the alternator inductor with an axial arrangement of open magnetic cores (OMC) and external closure of magnetic fluxes. The study compares the efficiency of using magnetic fluxes from permanent magnets (PM) on the example of two model variants of inductors with OMC developed by the authors. The analysis of the density distribution of magnetic fluxes in OMC was carried out by 3D modelling of the magnetic field using EMWorks software. It has been shown that such generators can be manufactured using a waste-free technology for strip of OMC. This technology significantly reduces the production costs of OMC. By modelling the distribution of magnetic fluxes in the OMC of the inductor, the results of experimental studies and analysis of the created device show that the capacity of generator can be varied by changing its dimensions and the number of the toggle switches on the rotor. This allows the alternator to be adapted to the load requirements – power banks and bicycle electronics.

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10

MONDAL, JYOTI P. "Octagonal spiral inductor measurement and modelling for MMIC applications." International Journal of Electronics 68, no. 1 (January 1990): 113–25. http://dx.doi.org/10.1080/00207219008921152.

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11

Allaoui, F., A. Kanssab, M. Matallah, A. Zoui, and M. Feliachi. "Modelling and Optimization of Induction Cooking by the Use of Magneto-Thermal Finite Element Analysis and Neural Network." Materials Science Forum 792 (August 2014): 251–59. http://dx.doi.org/10.4028/www.scientific.net/msf.792.251.

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The main advantage of induction cooking is the pan heating without thermal inertia.However to obtain best efficiency, it is essential to have an inductor geometry that gives ahomogeneous temperature on the pan bottom. In this paper, we will first model the magnetothermal phenomena of the system by a finite element method (FEM) in order to determine thedistribution of temperature on the pan bottom taking into consideration the nonlinearity of thesystem. This study shows that the temperature is not homogeneously distributed. Then, in the aim tohave homogeneous temperature distribution in the pan bottom, we propose an inductor structurewith four throats containing the coils and we will use Neural Networks to determine the optimalthroats distribution and their dimensions. The optimized structure permits us to achieve our goal.

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12

Yao, Jia, Kewei Li, Kaisheng Zheng, and Alexander Abramovitz. "On the Equivalence of the Switched Inductor and the Tapped Inductor Converters and its Application to Small Signal Modelling." Energies 12, no. 24 (December 17, 2019): 4806. http://dx.doi.org/10.3390/en12244806.

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Switched inductor (SI) converters are popular in applications requiring a steeper conversion ratio. However, these converters operate a twin inductor switching cell, which complicates the small-signal modeling. This paper proposes an expeditious small-signal analysis method to model the SI converters. The offered modeling approach is hinged on the analogy existing between the SI converters and certain Tapped Inductor (TI) converters. It is suggested here that by virtue of the analogy of the SI converters and TI converters the small-signal model of the SI converter is identical to that of its ideal TI counterpart. Hence, the recently developed Tapped Inductor Switcher (TIS) methodology can be applied to the modeling of the SI converters as well. As an example, the small-signal model of the Switched Inductor Buck converter is obtained. Theoretical analysis was confirmed by simulation and experimental results. In addition, several other SI converters and their TI counterparts are identified.

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13

Lullo, G., D. Scirè, and G. Vitale. "Non-linear inductor modelling for a DC/DC Buck converter." Renewable Energy and Power Quality Journal 1, no. 15 (April 2017): 686–93. http://dx.doi.org/10.24084/repqj15.433.

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14

Deane, J. H. B. "Modelling of a chaotic circuit containing a saturating/hysteretic inductor." Electronics Letters 29, no. 11 (May 27, 1993): 957–58. http://dx.doi.org/10.1049/el:19930637.

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15

PARIETTI, C., and J. RAPPAZ. "A QUASI-STATIC TWO-DIMENSIONAL INDUCTION HEATING PROBLEM II: NUMERICAL ANALYSIS." Mathematical Models and Methods in Applied Sciences 09, no. 09 (December 1999): 1333–50. http://dx.doi.org/10.1142/s0218202599000592.

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We consider a nonlinear elliptic–parabolic system which stems from the modelling of heat induction processes in which a sinusoidal electromagnetic field is applied at the boundary of the inductor. The magnetic field satisfies an elliptic equation whereas the temperature equation is parabolic. These two equations are coupled due to the Joule effect and to the conductivity dependence on temperature. A Galerkin method for our problem is analyzed and shown to yield error estimates in L2 and H1.

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16

Longeot, O., L. Nicolas, and P. Wendling. "3D design of an inductor for induction heating using 2D FEM and 3D BIEM modelling." IEEE Transactions on Magnetics 27, no. 5 (September 1991): 4004–7. http://dx.doi.org/10.1109/20.104979.

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17

Lovlya, Ekaterina V., and Oleg A. Popov. "Power Losses in RF Inductor of Ferrite-Free Closed-Loop Inductively-Coupled Low Pressure Mercury Lamps." Volume 28, Number 2, 2020, no. 02-2020 (April 2020): 89–94. http://dx.doi.org/10.33383/2019-040.

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RF inductor power losses of ferrite-free electrode-less low pressure mercury inductively-coupled discharges excited in closed-loop dielectric tube were studied. The modelling was made within the framework of low pressure inductive discharge transformer model for discharge lamps with tubes of 16, 25 and 38 mm inner diam. filled with the mixture of mercury vapour (7.5×10–3 mm Hg) and argon (0.1, 0.3 and 1.0 mm Hg) at RF frequencies of 1, 7; 3.4 and 5.1 MHz and plasma power of (25–500) W. Discharges were excited with the help of the induction coil of 3, 4 and 6 turns placed along the inner perimeter of the closed-loop tube. It was found that the dependence of coil power losses, Pcoil, on the discharge plasma power, Ppl, had the minimum while Pcoil decreased with RF frequency, tube diameter and coil number of turns. The modelling results were found in good qualitative agreement with the experimental data; quantitative discrepancies are believed to be due skin-effect and RF electric field radial inhomogeneity that were not included in discharge modelling.

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18

Feng, Wang, and Luo Yutao. "Modelling of a Power Converter with Multiple Operating Modes." World Electric Vehicle Journal 9, no. 1 (June 5, 2018): 7. http://dx.doi.org/10.3390/wevj9010007.

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In order to achieve DC voltage matching, on-board charging, and DC/AC power inversion, three independent power converters are often needed in traditional Distributed Power Converter (DPC) systems of electric vehicles (EVs): bidirectional DC/DC (Bi-DC/DC), AC/DC, and DC/AC. The requirement of electronic devices such as power switches, inductors, and capacitors make the converter costly and complicated in structure. In this paper, a power converter with multi-operating mode (PCMM) is presented. The proposed PCMM can work in Bi-DC/DC, AC/DC, and DC/AC modes. The state-space averaging model of PCMM considering resistance of Insulated Gate Bipolar Transistor (IGBT) and the inductor is presented. Based on this model, the transfer function of the system is derived and the controller is designed. The simulation and experimental results show that PCMM can meet the design target and verify the feasibility of the model. The measurement results show that the weight of PCMM proposed in this paper is reduced by 51.2% compared with the traditional structure.

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19

Kiliç, Recai. "A Comparative Study on Realization of Chua's Circuit: Hybrid Realizations of Chua's Circuit Combining the Circuit Topologies Proposed for Chua's Diode and Inductor Elements." International Journal of Bifurcation and Chaos 13, no. 06 (June 2003): 1475–93. http://dx.doi.org/10.1142/s0218127403007357.

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Several realizations of Chua's circuit have been proposed in the literature. The methodologies used in these realizations can be divided into two basic categories. In the first approach, a variety of circuit topologies have been considered for realizing the nonlinear resistor, NR in Chua's circuit. The main idea in the second approach related to the implementation of the circuit is an inductorless realization of Chua's circuit. For this purpose, several circuit topologies serving as a synthetic inductor, i.e. inductance simulator, are used instead of the inductor element in Chua's circuit. In this study, after comparing the circuit topologies proposed for Chua's diode and the inductor element in the circuit, we will present six alternative hybrid realizations of Chua's circuit combining circuit topologies proposed for the nonlinear resistor and the inductor element in the literature. The PSpice simulation experiments confirm that the six alternative hybrid realizations of the circuit exhibit the original chaotic behavior of Chua's circuit.

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20

Bredenkamp, G. L. "Elektromagnetiese pulskompressor met gelyktydige oordrag in aangrensende lusse en verminderde magnetiese kernvolume." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 9, no. 3 (July 8, 1990): 135–39. http://dx.doi.org/10.4102/satnt.v9i3.466.

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The inductor core volume of any loop in a Melville line pulse compressor may be reduced by allowing the inductor to saturate prior to complete charge transfer of the preceding loop. Two loops are thus active simultaneously and interactively, constituting a fifth order system. Hereby the core volume can be reduced to less than 30% of that of a comparable Melville line. The behaviour and design parameters of such a simultaneous transfer compressor are investigated by means of a theoretical analysis, numerical simulation and physical modelling of the system.

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21

Bharatiraja, C., R. Palanisamy, Sushuruth Sadagopan, R. Latha, and S. S. Dash. "Modelling and Simulation of 3-phase Transformerless Split Inductor Multilevel Inverter for Grid Connected Photovoltaic System." Advanced Materials Research 768 (September 2013): 75–79. http://dx.doi.org/10.4028/www.scientific.net/amr.768.75.

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A Split inductor is used with Exiting Inverter to interconnect inverter with grid connected system which avoids the usage of transformer. While using split inductor NPC-MLI shoot-through problems are producing in the bridge legs of an NPCTLI, its operation stability is ruined. Hysteresis Current Control (HCC) offers an excellent current control performance to NPCTLI. It acts based on the error current value i) and hysteresis band value (h). The proposed topology guarantees for no common-mode voltage, shoot-through possibility and capacitor balancing problem. Finally, the simulation results of a proposed SI-NPCTLI system verified using MATLAB SIMULINK.

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22

Buriakovskyi, S. G., A. S. Maslii, L. V. Asmolova, and N. T. Goncharuk. "Mathematical modelling of transients in the electric drive of the turnout of the mono-sleeper type with switched-inductor motor." Electrical Engineering & Electromechanics, no. 2 (April 10, 2021): 16–22. http://dx.doi.org/10.20998/2074-272x.2021.2.03.

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Introduction. The study is devoted to the development of the functionality of a railway track switch by introducing a switched-inductor electric drive. This solution justifies simplifying the mechanical part of the switches by changing the gearbox to a ball-screw and locating the all kinematic line of the switches on the mono-sleeper type. Goal. A study of the mono-sleeper turnout type behaviour to meet modern traffic safety requirements and improve operational reliability factors. Methodology. Based on electric drive theory, a kinematic line of a mono-switch turnout type with nonlinear friction characteristic is presented. Using differential equation theory and Laplace transformation, a mathematic description of a four-phase switched-inductor motor with ball-screw in a mechanical line of a single-mass electromechanical system has been made. A simulation mathematical model of the electric drive of mono-sleeper turnout type as the control system with a switched-inductor motor and nonlinear friction characteristic was built in MATLAB. Results. Simulation modelling of a mathematical model of a mono-sleeper turnout type with a switched-inductor motor and ball-screw gear has been developed and implemented. Studies of dynamics of turnout point movement have shown that, in contrast to the motors used today, the switched-inductor motor makes it possible to simplify the mechanical part of the drive, which leads to reduced time spent on laying and maintenance of turnout points, and therefore makes the design more reliable. The application of PID controller and fuzzy speed controller has shown improved dynamics of turnout point, while the fuzzy PID controller provides better performance of the set values and turnout point movements. Originality. First developed a mathematical model of the electric drive of the mono-sleeper turnout type, taking into account nonlinear friction characteristic, as an object of speed control of turnout point movement, is developed. Practical value. The developed mathematical model of a railway track turnout of the mono-sleeper type with a switched-inductor motor and ball-screw gear enables more efficient use of a microprocessor control system, creation of promising electric motor protection means and control of a turnout point.

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23

Schulze, Martin, Alexander Nikanorov, and Bernard Nacke. "Hierarchical shape optimization of one-sided transverse flux heating induction coil." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 39, no. 1 (November 23, 2019): 73–80. http://dx.doi.org/10.1108/compel-05-2019-0214.

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Purpose The transverse flux heating (TFH) concept offers very high electrical efficiency in combination with unique technological flexibility. Numerous advantages make this method beyond competition to be applied in e.g. processing lines. However, all potential advantages of TFH can be realized in practice only by optimal design of the inductor shape using numerical modelling and optimization techniques. This paper aims to describe a hierarchical approach to the optimal design of a one-sided induction coil, which will be used for one-sided TFH of continuous moving thin metal strip to achieve a homogeneous temperature distribution along the strip width. Design/methodology/approach Depending on the design step, 2D or 3D FEM simulations using ANSYS® Mechanical including the electromagnetics package are used. The harmonic electromagnetic solution is coupled to a transient thermal model which takes the strip movement into account. All models use the symmetries of the inductor workpiece arrangement to keep the calculation times as low as possible. Findings Due to the geometry of a TFH coil, the models can image a quarter or half of the arrangement. Preliminary investigations of different inductor head shapes can be carried out quickly and then further improved on more complex models in combination with the use of optimization algorithms. Practical implications Using hierarchical structure for designing a one-sided TFH coil, offers an efficient and quick way to create a coil which is adapted to the application. Originality/value The one-sided inductor design is considered, and the results are generally valid.

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24

Vardhan, Rigvendra Kumar, T. Selvathai, Rajaseeli Reginald, and P. Sivakumar. "Modelling of Multi Inductor based Balancing of Battery Pack for Electrical Mobility." Defence Science Journal 69, no. 3 (April 30, 2019): 266–73. http://dx.doi.org/10.14429/dsj.69.14418.

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The pre requisite for success of electrical mobility is driven by development of battery technologies. Reliable performance of electrical mobility necessitates for high energy density battery packs. The advent of Li ion cell chemistry revolutionised the electric and hybrid vehicle advancement due to its high energy density, lighter weight and wide range of temperature performance. Higher operating voltages of the battery are achieved by configuration of the cells in series and parallel combinations. The performance of these battery packs are affected by operating temperature and imperfections in manufacturability which causes mismatches in cell impedance, cell potential and state of charge (SOC) imbalance. These performance issues are overcome by cell and battery balancing techniques. In this paper, a dynamic battery pack balancing circuit by using multi inductor with SOC based logic controller for both cell and battery balancing are presented. The battery pack balancing performances during static, charging, discharging conditions are analysed.

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25

Dib, N. I., and J. I. Ababneh. "Physical Modelling and Particle Swarm Design Of Coplanar Waveguide Square Spiral Inductor." International Journal of Modelling and Simulation 28, no. 2 (January 2008): 219–25. http://dx.doi.org/10.1080/02286203.2008.11442472.

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26

Davoudi, A., J. Jatskevich, and P. L. Chapman. "Averaged modelling of switched-inductor cells considering conduction losses in discontinuous mode." IET Electric Power Applications 1, no. 3 (2007): 402. http://dx.doi.org/10.1049/iet-epa:20060329.

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27

Baake, E., A. Jakovics, S. Pavlovs, and M. Kirpo. "Influence of the channel design on the heat and mass exchange of induction channel furnace." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 30, no. 5 (September 13, 2011): 1637–50. http://dx.doi.org/10.1108/03321641111152793.

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PurposeThe purpose of this paper is to present in‐depth numerical modelling of heat and mass exchange in industrial induction channel furnace (ICF).Design/methodology/approachThe turbulent heat and mass exchange in the melt is calculated using a three‐dimensional (3D) electromagnetic model and a 3D transient large eddy simulation method. The simulation model has been verified by flow velocity and temperature measurements, which were carried out using an industrial sized channel inductor operating with Wood's metal as a low temperature model melt.FindingsThe ICF is well‐established for melting, holding and casting in the metallurgical industry. But there are still open questions regarding the heat and mass exchange in the inductor channel itself and between the channel and the melt bath. Different new designed channel geometries have been investigated numerically in order to find an optimized shape of the channel, which leads to an improved heat and mass transfer.Originality/valueLong‐term computations for the industrial ICF have been performed. Low frequency oscillations of the temperature maximum and its position in the ICF channel are considered.

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28

Hu, Guobiao, Lihua Tang, Junrui Liang, and Raj Das. "Modelling of a cantilevered energy harvester with partial piezoelectric coverage and shunted to practical interface circuits." Journal of Intelligent Material Systems and Structures 30, no. 13 (May 19, 2019): 1896–912. http://dx.doi.org/10.1177/1045389x19849269.

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This article presents a modelling methodology for a cantilevered energy harvester with partial piezoelectric coverage and shunted to practical power conditioning interface circuits. First, the distributed parameter model of the partially covered piezoelectric energy harvester is developed and the associated analytical solution is derived. Subsequently, the single-degree-of-freedom representation model is developed and the explicit expressions of equivalent lumped parameters are derived by taking the static deflection as the approximated fundamental vibration mode. Based on the comparison with the single-mode expression of the distributed parameter model, a correction factor is proposed to improve the accuracy of the single-degree-of-freedom model. The results of both the distributed parameter and the corrected single-degree-of-freedom models are compared. The accuracy of the corrected single-degree-of-freedom representation model is verified against the analytical and the finite element models. Finally, practical interface circuits including the standard energy harvesting circuit and the parallel synchronized switch harvesting on inductor circuit are considered. A modified equivalent impedance modelling method is proposed for the analysis of the standard energy harvesting and parallel synchronized switch harvesting on inductor circuits. The results of the modified equivalent impedance modelling method are verified against the existing method in the literature.

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29

Bereziuk, Andrii, Olexiy Karlov, Kryshchuk Roman, Anatoliy Mrachkovsky, and Vitaliy Nalyvaiko. "Improved Method of Calculation The Electromagnetic Generator For Environmentally Friendly Method of Forming Coolant." E3S Web of Conferences 154 (2020): 04002. http://dx.doi.org/10.1051/e3sconf/202015404002.

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A comparative analysis of the results of numerical modelling of electrophysical processes occurring in the middle of a cylindrical inductor with loading in the form of a beam of ferromagnetic pipes, using various tube plates on the ends of the loading, which is a component of the ecologically clean technology of processing biomass into fuel, is carried out. According to the results of computer simulation, it was found that the construction of “snowflakes” in comparison with round ferromagnetic boards allows reducing losses in them, increasing the capacity of the induction heater, and also passing the coolant, both from the inside of the pipes and from the outside.

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30

AKATSU, SATOSHI, HIROYUKI TORIKAI, and TOSHIMICHI SAITO. "ZERO-CROSS INSTANTANEOUS STATE SETTING FOR CONTROL OF A BIFURCATING H-BRIDGE INVERTER." International Journal of Bifurcation and Chaos 17, no. 10 (October 2007): 3571–75. http://dx.doi.org/10.1142/s021812740701938x.

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This paper studies stabilization of low-period unstable periodic orbits (UPOs) in a simplified model of a current mode H-bridge inverter. The switching of the inverter is controlled by pulse-width modulation signal depending on the sampled inductor current. The inverter can exhibit rich nonlinear phenomena including period doubling bifurcation and chaos. Our control method is realized by instantaneous opening of inductor at a zero-crossing moment of an objective UPO and can stabilize the UPO instantaneously as far as the UPO crosses zero in principle. Typical system operations can be confirmed by numerical experiments.

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31

Davoudi, A., J. Jatskevich, and P. L. Chapman. "Simple method of including conduction losses for average modelling of switched-inductor cells." Electronics Letters 42, no. 21 (2006): 1246. http://dx.doi.org/10.1049/el:20062474.

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Kumar, Kalamchety Srinivasa Ravi, Alagappan Pandian, Vedula Venkata Sastry, and Dogga Raveendhra. "Capacitor Clamped Coupled Inductor Bi-Directional DC-DC Converter with Smooth Starting." Machines 10, no. 1 (January 8, 2022): 47. http://dx.doi.org/10.3390/machines10010047.

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In this paper, a new type of capacitor clamped coupled inductor bidirectional DC–DC converter is proposed, which offers high voltage gain with smooth starting current transients, as well as reduced stresses on the capacitor. Steady state operation, mathematical modelling, and state space modelling for the proposed converter are presented in detail. A simplified single voltage clamped circuit is developed to mitigate the voltage spikes caused due to the coupled inductor by recovering the leakage energy effectively. Moreover, the clamping capacitor helps in reducing the ripples in output voltage, which in effect significantly reduces the stress on the switch and offers less ripple content at the load terminals. Simulation of the proposed converter is carried out using Simulink/MATLAB for the conversion of 24V DC to 200V DC. For this conversion, simulation results have proven that there is reduction of 13.64% of capacitor voltage stresses. Further, under line varying conditions, converter responses have proven that there is a 119% and 25.25% reduction in input current and output voltage transients, respectively. Similarly, 25.25% and 76.5% transient reductions of input current are observed for line and control parameter variations. The hardware investigation of the converter was carried out with a 100 W, 24 V/200 V setup. The converter achieved efficiency of 93.8%. The observations supplement the simulation results.

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BENADERO, L., V. MORENO-FONT, and A. EL AROUDI. "UNFOLDING NONSMOOTH BIFURCATION PATTERNS IN A 1-D PWL MAP AS A MODEL OF A SINGLE-INDUCTOR TWO-OUTPUT DC–DC SWITCHING CONVERTER." International Journal of Bifurcation and Chaos 23, no. 03 (March 2013): 1330008. http://dx.doi.org/10.1142/s0218127413300085.

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A piecewise linear (PWL) continuous map is used to analyze the nonsmooth bifurcation phenomena in a single-inductor two-output (SITO) DC–DC converter under a PWM interleaved control scheme. This map models the dynamical behavior of the converter when the waveforms of the inductor current can be approximated by straight lines during each switching subinterval. The parameter space is constrained by the interleaving control and the physical restriction on the values of some parameters. The main focus of this paper is on the existence and stability conditions of the rich variety of k-periodic orbits and the different bifurcation patterns that can be exhibited in this system. The analytical results in the form of 1-D and 2-D bifurcation diagrams are compared with numerical simulations obtained from the circuit-based switched model getting a good agreement between the two approaches.

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Aldoumani, Maha, Baris Yuce, and Dibin Zhu. "Using the Variable Geometry in a Planar Inductor for an Optimised Performance." Electronics 10, no. 6 (March 18, 2021): 721. http://dx.doi.org/10.3390/electronics10060721.

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In this paper, the performance, modelling and application of a planar electromagnetic sensor are discussed. Due to the small size profiles and their non-contact nature, planar sensors are widely used due to their simple and basic design. The paper discusses the experimentation and the finite element modelling (FEM) performed for developing the design of planar coils. In addition, the paper investigates the performance of various topologies of planar sensors when they are used in inductive sensing. This technique has been applied to develop a new displacement sensor. The ANSYS Maxwell FEM package has been used to analyse the models while varying the topologies of the coils. For this purpose, different models in FEM were constructed and then tested with topologies such as circular, square and hexagon coil configurations. The described methodology is considered an effective way for the development of sensors based on planar coils with better performance. Moreover, it also confirms a good correlation between the experimental data and the FEM models. Once the best topology is chosen based on performance, an optimisation exercise was then carried out using uncertainty models. That is, the influence of variables such as number of turns and the spacing between the coils on the output inductance has been investigated. This means that the combined effects of these two variables on the output inductance was studied to obtain the optimum values for the number of turns and the spacing between the coils that provided the highest level of inductance from the coils. Integrated sensor systems are a pre-requisite for developing the concept of smart cities in practice due to the fact that the individual sensors can hardly meet the demands of smart cities for complex information. This paper provides an overview of the theoretical concept of smart cities and the integrated sensor systems.

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KILIÇ, RECAI, and FATMA YILDIRIM. "EXPERIMENTAL REALIZATIONS OF HIGHER DIMENSIONAL CHAOTIC CIRCUITS INCLUDING BOTH FLOATING AND GROUNDED INDUCTORS." International Journal of Bifurcation and Chaos 17, no. 02 (February 2007): 607–16. http://dx.doi.org/10.1142/s021812740701746x.

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This paper deals with the experimental studies on higher dimensional chaotic circuits implemented by using both floating and grounded inductance simulators. The aim of this study is to give some practical design ideas to the readers studying higher dimensional chaotic circuits that include both floating and grounded inductor elements.

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Madrid, Emerson, Duberney Murillo-Yarce, Carlos Restrepo, Javier Muñoz, and Roberto Giral. "Modelling of SEPIC, Ćuk and Zeta Converters in Discontinuous Conduction Mode and Performance Evaluation." Sensors 21, no. 22 (November 9, 2021): 7434. http://dx.doi.org/10.3390/s21227434.

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High-order switched DC-DC converters, such as SEPIC, Ćuk and Zeta, are classic energy processing elements, which can be used in a wide variety of applications due to their capacity to step-up and/or step-down voltage characteristic. In this paper, a novel methodology for analyzing the previous converters operating in discontinuous conduction mode (DCM) is applied to obtain full-order dynamic models. The analysis is based on the fact that inductor currents have three differentiated operating sub-intervals characterized by a third one in which both currents become equal, which implies that the current flowing through the diode is zero (DCM). Under a small voltage ripple hypothesis, the currents of all three converters have similar current piecewise linear shapes that allow us to use a graphical method based on the triangular shape of the diode current to obtain the respective non-linear average models. The models’ linearization around their steady-state operating points yields full-order small-signal models that reproduce accurately the dynamic behavior of the corresponding switched model. The proposed methodology is applicable to the proposed converters and has also been extended to more complex topologies with magnetic coupling between inductors and/or an RC damping network in parallel with the intermediate capacitor. Several tests were carried out using simulation, hardware-in-the-loop, and using an experimental prototype. All the results validate the theoretical models.

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Zakzouk, Nahla E., Ahmed K. Khamis, Ahmed K. Abdelsalam, and Barry W. Williams. "Continuous-Input Continuous-Output Current Buck-Boost DC/DC Converters for Renewable Energy Applications: Modelling and Performance Assessment." Energies 12, no. 11 (June 10, 2019): 2208. http://dx.doi.org/10.3390/en12112208.

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Stand-alone/grid connected renewable energy systems (RESs) require direct current (DC)/DC converters with continuous-input continuous-output current capabilities as maximum power point tracking (MPPT) converters. The continuous-input current feature minimizes the extracted power ripples while the continuous-output current offers non-pulsating power to the storage batteries/DC-link. CUK, D1 and D2 DC/DC converters are highly competitive candidates for this task especially because they share similar low-component count and functionality. Although these converters are of high resemblance, their performance assessment has not been previously compared. In this paper, a detailed comparison between the previously mentioned converters is carried out as several aspects should be addressed, mainly the converter tracking efficiency, conversion efficiency, inductor loss, system modelling, transient and steady-state performance. First, average model and dynamic analysis of the three converters are derived. Then, D1 and D2 small signal analysis in voltage-fed-mode is originated and compared to that of CUK in order to address the nature of converters’ response to small system changes. Finally, the effect of converters’ inductance variation on their performance is studied using rigorous simulation and experimental implementation under varying operating conditions. The assessment finally revels that D1 converter achieves the best overall efficiency with minimal inductor value.

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Itoh, Makoto, and Leon O. Chua. "Dynamics of Memristor Circuits." International Journal of Bifurcation and Chaos 24, no. 05 (May 2014): 1430015. http://dx.doi.org/10.1142/s0218127414300158.

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In this paper, we show that Hamilton's equations can be recast into the equations of dissipative memristor circuits. In these memristor circuits, the Hamiltonians can be obtained from the principles of conservation of "charge" and "flux", or the principles of conservation of "energy". Furthermore, the dynamics of memristor circuits can be recast into the dynamics of "ideal memristor" circuits. We also show that nonlinear capacitors are transformed into nonideal memristors if an exponential coordinate transformation is applied. Furthermore, we show that the zero-crossing phenomenon does not occur in some memristor circuits because the trajectories do not intersect the i = 0 axis. We next show that nonlinear circuits can be realized with fewer elements if we use memristors. For example, Van der Pol oscillator can be realized by only two elements: an inductor and a memristor. Chua's circuit can be realized by only three elements: an inductor, a capacitor, and a voltage-controlled memristor. Finally, we show an example of two-cell memristor CNNs. In this system, the neuron's activity depends partly on the supplied currents of the memristors.

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Gänsicke, Boris T., Pablo Rodríguez-Gil, Nicola P. Gentile Fusillo, Keith Inight, Matthias R. Schreiber, Anna F. Pala, and Pier-Emmanuel Tremblay. "Single magnetic white dwarfs with Balmer emission lines: a small class with consistent physical characteristics as possible signposts for close-in planetary companions." Monthly Notices of the Royal Astronomical Society 499, no. 2 (September 29, 2020): 2564–74. http://dx.doi.org/10.1093/mnras/staa2969.

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ABSTRACT We report the identification of SDSS J121929.45+471522.8 as the third apparently isolated magnetic (B ≃ 18.5 ± 1.0 MG) white dwarf exhibiting Zeeman-split Balmer emission lines. The star shows coherent variability at optical wavelengths with an amplitude of ≃0.03 mag and a period of 15.26 h, which we interpret as the spin period of the white dwarf. Modelling the spectral energy distribution and Gaia parallax, we derive a white dwarf temperature of 7500 ± 148 K, a mass of 0.649 ± 0.022 M⊙, and a cooling age of 1.5 ± 0.1 Gyr, as well as an upper limit on the temperature of a sub-stellar or giant planet companion of ≃250 K. The physical properties of this white dwarf match very closely those of the other two magnetic white dwarfs showing Balmer emission lines: GD356 and SDSS J125230.93−023417.7. We argue that, considering the growing evidence for planets and planetesimals on close orbits around white dwarfs, the unipolar inductor model provides a plausible scenario to explain the characteristics of this small class of stars. The tight clustering of the three stars in cooling age suggests a common mechanism switching the unipolar inductor on and off. Whereas Lorentz drift naturally limits the lifetime of the inductor phase, the relatively late onset of the line emission along the white dwarf cooling sequence remains unexplained.

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Galias, Zbigniew. "Numerical Study of Multiple Attractors in the Parallel Inductor–Capacitor–Memristor Circuit." International Journal of Bifurcation and Chaos 27, no. 11 (October 2017): 1730036. http://dx.doi.org/10.1142/s0218127417300361.

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Dynamical phenomena in the parallel inductor–capacitor–memristor circuit are studied numerically. A systematic search for coexisting attractors is carried out. The existence of multiple attractors is observed and bifurcation diagrams are constructed. Basins of attraction are computed. The coexistence of attractors is proved using interval analysis tools. The existence of periodic attractors is confirmed by applying the interval Newton method to prove the existence of stable periodic orbits of an associated return map. For numerically observed chaotic attractors the existence of attractors is proved by constructing trapping regions enclosing chaotic trajectories of the return map. The existence of topological chaos is proved using the method of covering relations.

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Li, Yang, Zhao Yao, Chun-Wei Zhang, Xiao-Qian Fu, Zhi-Ming Li, Nian-Qiang Li, and Cong Wang. "Modelling of double air-bridged structured inductor implemented by a GaAs integrated passive device manufacturing process." Semiconductor Science and Technology 32, no. 5 (March 27, 2017): 055002. http://dx.doi.org/10.1088/1361-6641/aa6022.

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42

Abbasi, Majid, Ahmad Afifi, and Mohammad Reza Alizadeh Pahlavani. "Signal flow graph modelling of a switching converter with single inductor triple output DC–DC structure." IET Power Electronics 11, no. 7 (April 18, 2018): 1195–204. http://dx.doi.org/10.1049/iet-pel.2017.0289.

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43

BUSCARINO, ARTURO, LUIGI FORTUNA, MATTIA FRASCA, and GREGORIO SCIUTO. "COUPLED INDUCTORS-BASED CHAOTIC COLPITTS OSCILLATOR." International Journal of Bifurcation and Chaos 21, no. 02 (February 2011): 569–74. http://dx.doi.org/10.1142/s0218127411028611.

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In this paper, a new chaotic circuit is introduced, conceived by considering a Colpitts oscillator with the inclusion of two further elements: a coupled inductor and a variable resistor. The proposed circuit exhibits a rich dynamics that has been experimentally characterized through the bifurcation diagram with respect to the resistor value. The main result that can be derived from the analysis of the new circuit leads to a simple way to control chaos in the chaotic Colpitts oscillator by varying a single external control parameter. The same technique has then been applied to the classical periodic Colpitts oscillator, demonstrating how in this way the oscillation frequency can be controlled.

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LINDBERG, ERIK, ARŪNAS TAMAŠEVIČIUS, GYTIS MYKOLAITIS, and SKAIDRA BUMELIENĖ. "TOWARDS THRESHOLD FREQUENCY IN CHAOTIC COLPITTS OSCILLATOR." International Journal of Bifurcation and Chaos 17, no. 10 (October 2007): 3449–53. http://dx.doi.org/10.1142/s0218127407019196.

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A novel version of chaotic Colpitts oscillator is described. Instead of a linear loss resistor, it includes an extra inductor and a diode in the collector circuit of the transistor. The modified circuit in comparison with the common Colpitts oscillator may generate chaotic oscillations at the fundamental frequency f* noticeably closer to the threshold frequency fT of the employed bipolar junction transistor, up to f* ≈ 0.6fT.

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45

Bezrukovs, V., Vl Bezrukovs, M. Konuhova, D. Bezrukovs, A. Berzins, and J. Trokss. "Magnetic Flux Switching Type Permanent Magnet Generator for Bicycles: Modelling and an Experimental Study." Latvian Journal of Physics and Technical Sciences 59, s3 (June 1, 2022): 48–57. http://dx.doi.org/10.2478/lpts-2022-0024.

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Abstract The article introduces two new designs of flux switching permanent magnet alternators with a radial and an axial arrangement of the inductor relative to the magnetic flux switch. The study presents the results of 3D magnetic flux modelling along with the outcomes of physical experiments. In the course of laboratory experiments, the results of theoretical estimations are compared with actual physical performance parameters. The results are presented in the form of power and output voltage curves in relation to the frequency and load current. The study proposes the practical application of the alternators based on the magnetic flux switching principle in the development of a bicycle generator. Laboratory test models are made of a laminated steel using a waste-free technology.

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BARBOZA, RUY. "HYPERCHAOS IN A CHUA'S CIRCUIT WITH TWO NEW ADDED BRANCHES." International Journal of Bifurcation and Chaos 18, no. 04 (April 2008): 1151–59. http://dx.doi.org/10.1142/s0218127408020884.

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In this work a fourth-order Chua's circuit, capable of generating hyperchaotic oscillations in a wide range of parameters, is presented. The circuit is obtained by adding two new branches to the original topology of the Chua's double scroll circuit. One of the added branches is a linear inductor-resistor series connection, and the other one is a nonlinear voltage-controlled current source. A theoretical analysis of the circuit equations is presented, along with numerical and experimental results.

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Bezrukovs, V., Vl Bezrukovs, M. Konuhova, D. Bezrukovs, and A. Berzins. "The Study of Properties of an Axial Flux Switching Permanent Magnet Alternator with Open Magnetic Cores." Latvian Journal of Physics and Technical Sciences 59, s3 (June 1, 2022): 69–81. http://dx.doi.org/10.2478/lpts-2022-0026.

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Abstract The article studies magnetic field distribution in the alternator inductors with an axial arrangement of open magnetic cores (OMC) and an external closure of the magnetic flux. The study compares the efficiency of magnetic flux utilization for four models with different modifications of the geometry of the magnetic circuit of inductors. The analysis of the density distribution of magnetic flux in OMC is carried out by 3D modelling of the magnetic field using EMWorks software. Based on the experimental study of the properties of the base model, the influence of the configuration of the magnetic circuit of the inductor on the efficiency of the alternator is shown. The results are presented in the form of tables and diagrams characterising changes in magnetic fluxes and electromotive force (EMF) in relative units. The results provide the grounds for assessing the potential and possible limits of optimization with respect to the size of air gaps and dimensions of the magnetic flux toggle switches. The study indicates that the proposed alternator can be adapted for various load requirements and optimized for various applications, such as charging power banks and powering bicycle electronics. The study also demonstrates that for such generators, OMC can be manufactured using a waste-free strip production technology.

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Sadaf, Shima, Nasser Al‐Emadi, Atif Iqbal, Mahajan Sagar Bhaskar, and Mohammad Meraj. "Modelling, analysis, and implementation of a switched‐inductor based DC/DC converter with reduced switch current stress." IET Power Electronics 14, no. 8 (May 4, 2021): 1504–14. http://dx.doi.org/10.1049/pel2.12127.

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Chen, R. T., and Y. Y. Chen. "Modelling and controller design of inductor-coupled multimodule DC–DC convertor with master–slave current-comparing scheme." IEE Proceedings - Electric Power Applications 152, no. 4 (2005): 977. http://dx.doi.org/10.1049/ip-epa:20045241.

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KYPRIANIDIS, I. M., CH VOLOS, I. N. STOUBOULOS, and J. HADJIDEMETRIOU. "DYNAMICS OF TWO RESISTIVELY COUPLED DUFFING-TYPE ELECTRICAL OSCILLATORS." International Journal of Bifurcation and Chaos 16, no. 06 (June 2006): 1765–75. http://dx.doi.org/10.1142/s0218127406015660.

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Duffing-type electrical oscillator is a second-order nonlinear electric circuit driven by a sinusoidal voltage source. The nonlinear element is a nonlinear inductor. We have studied the dynamics of two resistively coupled oscillators of this type in two cases. The first, when the oscillators are identical having chaotic dynamics, and the second, when the oscillators are in different dynamic states (periodic and chaotic, respectively). In the first case, chaotic synchronization is observed, while in the second case control of the chaotic behavior is achieved.

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