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Journal articles on the topic 'Modelling of resonant converter'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Chiu, H. K., Agileswari K. Ramasamy, Nadia M. L. Tan, and Matthew Y. W. Teow. "Modelling of a Two-Stage Bidirectional AC-DC Converter using Wavelet Modulation." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 3 (September 1, 2018): 1006. http://dx.doi.org/10.11591/ijpeds.v9.i3.pp1006-1015.

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<span lang="EN-US">In this paper, a Wavelet modulated isolated two-stage three-phase bidirectional AC-DC converter is proposed for electric vehicle (EV) charging systems. Half-bridge resonant CLLC converter is proposed due to its high efficiency, wide gain range, galvanic isolation and bidirectional power flow. Wavelet modulation technique is used for three-phase six leg AC-DC converter due to its benefits of high DC component and lower harmonic contents. The proposed two-stage converter is developed and simulated in MATLAB Simulink environment. The contribution of this paper is on the implementation and performance analysis of Wavelet modulation in bidirectional AC-DC converters. The results show that Wavelet modulation is suitable to be implemented for the proposed bidirectional converter. The performance of the proposed converter delivers very low output voltage ripple and total harmonic distortion output current of less than 10% which is within the expected results.</span>

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2

TAUFIK, TAUFIK, ANGEL ALEJANDRO POLLERI, MAKBUL ANWARI, and MOHAMMAD TAUFIK. "MODELING OF PARALLELED SERIES-LOADED-RESONANT CONVERTER WITH PHASE SHIFTING CONTROL." International Journal of Modeling, Simulation, and Scientific Computing 02, no. 03 (September 2011): 259–75. http://dx.doi.org/10.1142/s1793962311000463.

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One topology widely known for use in high-voltage high-power converter in medical equipment is the Series Loaded Resonant (SLR) converter. As the power level required by medical equipment increases, there is a need to parallel the SLR converter for improved efficiency and performance. This paper presents the development of a circuit model for paralleled SLR converter to aid circuit designers evaluate circuit performance before the actual hardware is implemented. Each section of the circuit is modeled individually using sinusoidal approximation and circuit network methods. The derived model is then extended to include the parallel connection of the converter. The validity of the model is then tested by using computer simulation and hardware setup to demonstrate the converter's switching waveforms, output voltage and efficiency. Results from both simulation and hardware show good agreement, which demonstrate the validity of the derived model and its usefulness in the initial design of the converter.

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3

Farias Martins, Lais, David Stone, and Martin Foster. "Modelling of phase-shift modulated bidirectional CLLC resonant converter." IET Power Electronics 13, no. 12 (September 16, 2020): 2628–37. http://dx.doi.org/10.1049/iet-pel.2018.5672.

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4

CHOI, HYUN CHIL, GUN WOO MOON, and MYUNG JOONG YOUN. "Small signal modelling for the PWM series resonant converter." International Journal of Electronics 75, no. 5 (November 1993): 985–97. http://dx.doi.org/10.1080/00207219308907177.

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5

Li, Sen, and Babak Fahimi. "State‐space modelling of LLC resonant half‐bridge DC–DC converter." IET Power Electronics 13, no. 8 (June 2020): 1583–92. http://dx.doi.org/10.1049/iet-pel.2019.1503.

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6

Fehér, Áron, and Dénes Nimród Kutasi. "Modelling and Control of Bounded Hybrid Systems in Power Electronics." Acta Universitatis Sapientiae Electrical and Mechanical Engineering 9, no. 1 (December 1, 2017): 33–42. http://dx.doi.org/10.1515/auseme-2017-0008.

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Abstract In this work, an explicit Model Predictive Control algorithm is devised and compared to classical control algorithms applied to a series resonant DC/DC converter circuit. In the first part, a model of the converter as a hybrid system is created and studied. In the second part, the predictive algorithm is applied and tested on the model. Finally, the designed control algorithm is compared to classical PI and sliding mode controllers.

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7

Renzi, E. "Hydroelectromechanical modelling of a piezoelectric wave energy converter." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2195 (November 2016): 20160715. http://dx.doi.org/10.1098/rspa.2016.0715.

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We investigate the hydroelectromechanical-coupled dynamics of a piezoelectric wave energy converter. The converter is made of a flexible bimorph plate, clamped at its ends and forced to motion by incident ocean surface waves. The piezoceramic layers are connected in series and transform the elastic motion of the plate into useful electricity by means of the piezoelectric effect. By using a distributed-parameter analytical approach, we couple the linear piezoelectric constitutive equations for the plate with the potential-flow equations for the surface water waves. The resulting system of governing partial differential equations yields a new hydroelectromechanical dispersion relation, whose complex roots are determined with a numerical approach. The effect of the piezoelectric coupling in the hydroelastic domain generates a system of short- and long-crested weakly damped progressive waves travelling along the plate. We show that the short-crested flexural wave component gives a dominant contribution to the generated power. We determine the hydroelectromechanical resonant periods of the device, at which the power output is significant.

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8

Laouamri, K., J. P. Ferrieux, S. Catellani, and J. Barbaroux. "Application of axisymmetric modelling to integrated LCT structure of series-resonant converter." European Transactions on Electrical Power 14, no. 4 (July 2004): 247–59. http://dx.doi.org/10.1002/etep.20.

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9

Szabo, A., E. S. Ward, P. G. Holmes, and M. Kansara. "Mathematical modelling of quasi-resonant converters." Electronics Letters 31, no. 24 (November 23, 1995): 2057–58. http://dx.doi.org/10.1049/el:19951427.

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10

Chen, Yu-Hsing, Catalin Gabriel Dincan, Philip Kjær, Claus Leth Bak, Xiongfei Wang, Carlos Enrique Imbaquingo, Eduard Sarrà, Nicola Isernia, and Alberto Tonellotto. "Model-Based Control Design of Series Resonant Converter Based on the Discrete Time Domain Modelling Approach for DC Wind Turbine." Journal of Renewable Energy 2018 (December 2, 2018): 1–18. http://dx.doi.org/10.1155/2018/7898679.

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This paper focuses on the modelling of the series resonant converter proposed as a DC/DC converter for DC wind turbines. The closed-loop control design based on the discrete time domain modelling technique for the converter (named SRC#) operated in continuous-conduction mode (CCM) is investigated. To facilitate dynamic analysis and design of control structure, the design process includes derivation of linearized state-space equations, design of closed-loop control structure, and design of gain scheduling controller. The analytical results of system are verified in z-domain by comparison of circuit simulator response (in PLECS™) to changes in pulse frequency and disturbances in input and output voltages and show a good agreement. Furthermore, the test results also give enough supporting arguments to proposed control design.

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11

Sarath, K. S., and S. Sekar. "Modeling and optimal design of LLC resonant converter using whale optimization algorithm." International Journal of Modeling, Simulation, and Scientific Computing 09, no. 06 (December 2018): 1850059. http://dx.doi.org/10.1142/s1793962318500599.

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Resonant converter (RC) was brought under research in the 80’s widely, which can attain very small switching loss, therefore, facilitating resonant topologies to function at the high switching frequency. It is well addressed in the review that the optimal parameterization of the resonant converter is a crucial task. While the literature has come out with different methodologies, they are highly conceptual and so the uncertainty due to high theoretical impact persists. This paper intends to develop a Parameter Optimization (PO) algorithm for designing and developing of LLC-RC. The proposed algorithm overwhelms the limitation by introducing a nonconceptual model based on the simulated outcome. Specifically, the resonant current under start-up conditions is acquired from the literary outcome, and the intelligent model is constructed. Based on the proposed model, a renowned search algorithm called as Whale Optimization Algorithm (WOA) is exploited to optimize the time constant of the resonant converter, which is a critical design parameter. The objective model is derived as a function of start-up time and so the start-up time can be minimized. Moreover, the response speed of the output voltage is also increased. The proposed Whale Optimization Algorithm based Parameter Optimization (WOAPO) is compared with the conventional techniques such as IAPO, Ant Bee Colony-PO (ABC-PO), Particle Swarm Optimization- PO (PSOPO), FireFly PO (FFPO) and Grey Wolf Optimization (GWOPO). The obtained result verifies the performance of the proposed method in modeling LLC-RC system.

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12

Kierepka, Kamil, Piotr Legutko, Piotr Zimoch, and Marcin Kasprzak. "Dual‐frequency induction heating for gear hardening: converter, resonant circuit, and FEM modelling." IET Power Electronics 11, no. 14 (November 2018): 2396–402. http://dx.doi.org/10.1049/iet-pel.2018.5336.

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13

Thrimawithana, Duleepa J., and Udaya K. Madawala. "Modelling and analysis of split-capacitor push-pull parallel-resonant converter in normal mode." International Journal of Industrial Electronics and Drives 1, no. 1 (2009): 42. http://dx.doi.org/10.1504/ijied.2009.025345.

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14

Pols, Alana, Eric Gubesch, Nagi Abdussamie, Irene Penesis, and Christopher Chin. "Mooring Analysis of a Floating OWC Wave Energy Converter." Journal of Marine Science and Engineering 9, no. 2 (February 20, 2021): 228. http://dx.doi.org/10.3390/jmse9020228.

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This investigation focuses on the modelling of a floating oscillating water column (FOWC) wave energy converter with a numerical code (ANSYS AQWA) based on potential flow theory. Free-floating motions predicted by the numerical model were validated against experimental data extrapolated from a 1:36 scale model device in regular and irregular sea states. Upon validation, an assessment of the device’s motions when dynamically coupled with a four-line catenary mooring arrangement was conducted at different incident wave angles and sea states ranging from operational to survivable conditions, including the simulation of the failure of a single mooring line. The lack of viscosity in the numerical modelling led to overpredicted motions in the vicinity of the resonant frequencies; however, the addition of an external linear damping coefficient was shown to be an acceptable method of mitigating these discrepancies. The incident wave angle was found to have a limited influence on the magnitudes of heave, pitch, and surge motions. Furthermore, the obtained results indicated that the mooring restoring force is controlled by the forward mooring lines under the tested conditions.

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15

Baha, B. "Modelling of resonant switched-mode converters using SIMULINK." IEE Proceedings - Electric Power Applications 145, no. 3 (1998): 159. http://dx.doi.org/10.1049/ip-epa:19981805.

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16

Casanueva, Rosario, Francisco J. Azcondo, and Salvador Bracho. "Series–parallel resonant converter for an EDM power supply." Journal of Materials Processing Technology 149, no. 1-3 (June 2004): 172–77. http://dx.doi.org/10.1016/j.jmatprotec.2003.10.038.

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17

Akhiate, Aziz, Abdellah Boulal, Abdelmajid Farchi, and Ouadia Elmaguiri. "Nonlinear interconnected high gain observer for series-parallel resonant DC/DC converter." International Journal of Modelling, Identification and Control 33, no. 2 (2019): 159. http://dx.doi.org/10.1504/ijmic.2019.10026101.

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18

Elmaguiri, Ouadia, Abdelmajid Farchi, Abdellah Boulal, and Aziz Akhiate. "Nonlinear interconnected high gain observer for series-parallel resonant DC/DC converter." International Journal of Modelling, Identification and Control 33, no. 2 (2019): 159. http://dx.doi.org/10.1504/ijmic.2019.104380.

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19

Petterteig, Astrid. "Control of a resonant d.c.-link converter for a.c. motor drives." Modeling, Identification and Control: A Norwegian Research Bulletin 13, no. 4 (1992): 199–220. http://dx.doi.org/10.4173/mic.1992.4.2.

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20

Baha, B., and M. O. Tokhi. "Dynamic modelling and control of resonant switch mode converters." Control Engineering Practice 5, no. 11 (November 1997): 1533–42. http://dx.doi.org/10.1016/s0967-0661(97)10007-7.

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21

Foster, M. P., H. I. Sewell, C. M. Bingham, and D. A. Stone. "State-variable modelling of LCC voltage-output resonant converters." Electronics Letters 37, no. 17 (2001): 1065. http://dx.doi.org/10.1049/el:20010736.

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22

Martynov, A., V. Samsygin, D. Sokolov, D. Ulitovsky, and A. Kokovinov. "Calculation and modelling of the converter of constant tension with the intermediate resonant high-frequency inverter." Transactions of the Krylov State Research Centre 4, no. 386 (November 15, 2018): 139–48. http://dx.doi.org/10.24937/2542-2324-2018-4-386-139-148.

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23

ZHOU, YUFEI, CHI K. TSE, SHUI-SHENG QIU, and FRANCIS C. M. LAU. "APPLYING RESONANT PARAMETRIC PERTURBATION TO CONTROL CHAOS IN THE BUCK DC/DC CONVERTER WITH PHASE SHIFT AND FREQUENCY MISMATCH CONSIDERATIONS." International Journal of Bifurcation and Chaos 13, no. 11 (November 2003): 3459–71. http://dx.doi.org/10.1142/s0218127403008685.

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The buck converter has been known to exhibit chaotic behavior in a wide parameter range. In this paper, the resonant parametric perturbation method is applied to control chaos in a voltage-mode controlled buck converter. In particular, the effects of phase shift and frequency mismatch in the perturbing signal are studied. It is shown that the control power can be significantly reduced if the perturbation is applied with an appropriate phase shift. Moreover, when frequency mismatch is inevitable, intermittent chaos occurs, but effective control can still be accomplished at the expense of raising the control power. Analysis, simulations and experimental measurements are presented to provide theoretical and practical evidences for the proposed control method.

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24

Waltrich, Gierri, and Ivo Barbi. "Modelling, control and realisation of the single‐ended forward converter with resonant reset at the secondary side." IET Power Electronics 8, no. 11 (November 2015): 2097–106. http://dx.doi.org/10.1049/iet-pel.2014.0956.

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25

Soto, A., J. Cortes, and F. Pascual. "Dynamic Modelling of The Series Resonant Converter Operating in Discontinous Conduction Mode And its Application in Space." E3S Web of Conferences 16 (2017): 14007. http://dx.doi.org/10.1051/e3sconf/20171614007.

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26

KO, JUNG HO, SUNG SOO HONG, TAI YOUNG AHN, and MYUNG JOONG YOUN. "Dynamic modelling and current control technique for quantum series resonant converter with non-periodic integral cycle mode." International Journal of Electronics 71, no. 5 (November 1991): 885–97. http://dx.doi.org/10.1080/00207219108925533.

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27

Martin-Ramos, Juan A., Oscar Pardo-Vaquero, Juan Diaz, Fernando Nuno, Pedro Jose Villegas, and Alberto Martin-Pernia. "Modelling a Multilevel LCC Resonant AC-DC Converter for Wide Variations in the Input and the Load." IEEE Transactions on Power Electronics 34, no. 6 (June 2019): 5217–28. http://dx.doi.org/10.1109/tpel.2018.2867287.

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28

Imbaquingo, Carlos Enrique, Eduard Sarrà, Nicola Isernia, Alberto Tonellotto, Yu-Hsing Chen, Catalin Gabriel Dincan, Philip Kjær, Claus Leth Bak, and Xiongfei Wang. "Harmonic Susceptibility Study of DC Collection Network Based on Frequency Scan and Discrete Time-Domain Modelling Approach." Journal of Electrical and Computer Engineering 2018 (December 16, 2018): 1–25. http://dx.doi.org/10.1155/2018/1328736.

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The equivalent model of offshore DC power collection network for the harmonic susceptibility study is proposed based on the discrete time-domain modelling technique and frequency scan approach in the frequency domain. The proposed methodology for modelling a power converter and a DC collection system in the frequency domain can satisfy harmonic studies of any configuration of wind farm network and thereby find suitable design of power components and array network. The methodology is intended to allow studies on any configuration of the wind power collection, regardless of choice of converter topology, array cable configuration, and control design. To facilitate harmonic susceptibility study, modelling DC collection network includes creating the harmonic model of the DC turbine converter and modelling the array network. The current harmonics within the DC collection network are obtained in the frequency domain to identify the resonance frequency of the array network and potential voltage amplification issues, where the harmonic model of the turbine converter is verified by the comparison of the converter switching model in the PLECS™ circuit simulation tool and laboratory test bench, and show a good agreement.

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29

ZHUSUBALIYEV, ZHANYBAI T., ERIK MOSEKILDE, and OLGA O. YANOCHKINA. "TORUS BIFURCATIONS IN MULTILEVEL CONVERTER SYSTEMS." International Journal of Bifurcation and Chaos 21, no. 08 (August 2011): 2343–56. http://dx.doi.org/10.1142/s0218127411029835.

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This paper considers the processes of torus formation and reconstruction through smooth and nonsmooth bifurcations in a pulse-width modulated DC/DC converter with multilevel control. When operating in a regime of high corrector gain, converters of this type can generate structures of stable tori embedded one into the other and with their basins of attraction delineated by intervening repelling tori. The paper illustrates the coexistence of three stable tori with different resonance behaviors and shows how reconstruction of these tori takes place across the borders of different dynamical regimes. The paper also demonstrates how pairs of attracting and repelling tori emerge through border-collision torus-birth and border-collision torus-fold bifurcations.

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30

Wang, H., P. Zanchetta, J. Clare, and C. Ji. "Modelling and control of a zero current switching high-voltage resonant converter power supply for radio frequency sources." IET Power Electronics 5, no. 4 (2012): 401. http://dx.doi.org/10.1049/iet-pel.2010.0400.

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31

McNatt, J. Cameron, and Christopher H. Retzler. "The performance of the Mocean M100 wave energy converter described through numerical and physical modelling." International Marine Energy Journal 3, no. 1 (May 13, 2020): 11–19. http://dx.doi.org/10.36688/imej.3.11-19.

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Mocean Energy has designed a 100-kW hinged-raft wave energy converter (WEC), the M100, which has a novel geometry that reduces the cost of energy by improving the ratios of power per size and power per torque. The performance of the M100 is shown through the outputs of frequency-domain and time-domain numerical models, which are compared with those from 1/20th scale wave-tank testing. Results show that for the undamped, frequency-domain model, there are resonant peaks in the response at 6.6 and 9.6 s, corresponding to wavelengths that are 1.9 and 3.7 times longer than the machine. With the inclusion of power-take-off and viscous damping, the power response as a function of frequency shows a broad bandwidth and a hinge flex amplitude of 12-20 degrees per meter of wave amplitude. Comparison between the time-domain model and physical data in a variety of sea states, up to a significant wave height of 4.5 m, show agreements within 10% for average power absorption, which is notable because only simple, nonlinear, numerical models were used. The M100 geometry results in a broad-banded, large amplitude response due to its asymmetric shape, which induces coupling between modes of motion.

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32

Mandal, Kuntal, Abdelali El Aroudi, Abdullah Abusorrah, M. Al‐Hindawi, Yusuf Al‐Turki, Damian Giaouris, and Soumitro Banerjee. "Non‐linear modelling and stability analysis of resonant DC–DC converters." IET Power Electronics 8, no. 12 (December 2015): 2492–503. http://dx.doi.org/10.1049/iet-pel.2014.0851.

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33

Green, A. W. "Modelling a push—pull parallel resonant convertor using generalised state-space averaging." IEE Proceedings B Electric Power Applications 140, no. 6 (1993): 350. http://dx.doi.org/10.1049/ip-b.1993.0045.

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34

Han, Weijian, Ruiqing Ma, and Qing Liu. "Small-Signal Model for Dual Active Bridge Series Resonant DC-DC Converters with Variable-Frequency and Phase-Shift Modulation." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 4 (August 2019): 830–37. http://dx.doi.org/10.1051/jnwpu/20193740830.

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Variable frequency and phase shift modulation can achieve zero-voltage switching (ZVS) of dual active bridge series resonant DC-DC converters(DABSRCs) over a wide operating range so as to effectively improving system efficiency and reliability. In order to study the dynamics of DABSRCs and provide the basis for the closed-loop compensator design, a continuous-time small-signal model is proposed. The generalized average modelling approach is adopted, in which the DC component of the output voltage and the fundamental component of the inductor current and resonant capacitor voltage are selected as the state variables, precisely describing impacts of the resonance on the system dynamics. On the above-mentioned basis, a closed-loop compensator is designed, which achieves the stable operation with the ZVS variable frequency and phase shift modulation. The analysis results are verified by the simulation and experimental results.

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35

Sarkar, Dripta, Emiliano Renzi, and Frederic Dias. "Wave farm modelling of oscillating wave surge converters." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, no. 2167 (July 8, 2014): 20140118. http://dx.doi.org/10.1098/rspa.2014.0118.

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A mathematical model is described to analyse the hydrodynamic behaviour of a wave energy farm consisting of oscillating wave surge converters in oblique waves. The method is a highly efficient semi-analytical approach based on the linear potential flow theory. Wave farms with a large number of such devices are studied for various configurations. For an inline configuration with normally incident waves, the occurrence of a near-resonant behaviour, already known for small arrays, is confirmed. A strong wave focusing effect is observed in special configurations comprising a large number of devices. The effects of the arrangement and of the distance of separation between the flaps are also studied extensively. In general, the flaps lying on the front of the wave farm are found to exhibit an enhanced performance behaviour in average, owing to the mutual interactions arising within the array. A random sea analysis shows that a slightly staggered arrangement can be an ideal layout for a wave farm of this device. The hydrodynamics of two flaps that oscillate back to back is also discussed.

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36

Batarseh, I., and K. Siri. "Generalized approach to the small signal modelling of DC-to-DC resonant converters." IEEE Transactions on Aerospace and Electronic Systems 29, no. 3 (July 1993): 894–909. http://dx.doi.org/10.1109/7.220938.

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37

Sabzehgar, Reza, and Rami Ghali. "A novel modelling and control strategy for a full-wave ZCS quasi-resonant boost converter for a PV-based battery charging system." International Journal of Power Electronics 14, no. 1 (2021): 70. http://dx.doi.org/10.1504/ijpelec.2021.116648.

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38

Sabzehgar, Reza, and Rami Ghali. "A novel modelling and control strategy for a full-wave ZCS quasi-resonant boost converter for a PV-based battery charging system." International Journal of Power Electronics 14, no. 1 (2021): 70. http://dx.doi.org/10.1504/ijpelec.2021.10038531.

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39

Ben-Yaakov, S., and G. Rahav. "Average modelling and simulation of series-parallel resonant converters by PSPICE compatible behavioural dependent sources." Electronics Letters 32, no. 4 (1996): 288. http://dx.doi.org/10.1049/el:19960233.

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40

Paduano, Bruno, Giuseppe Giorgi, Rui P. F. Gomes, Edoardo Pasta, João C. C. Henriques, Luís M. C. Gato, and Giuliana Mattiazzo. "Experimental Validation and Comparison of Numerical Models for the Mooring System of a Floating Wave Energy Converter." Journal of Marine Science and Engineering 8, no. 8 (July 27, 2020): 565. http://dx.doi.org/10.3390/jmse8080565.

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The mooring system of floating wave energy converters (WECs) has a crucial impact on power generation efficiency, cost of delivered energy, proper operation, reliability and survivability. An effective design, addressing such competing objectives, requires appropriate mathematical models to predict mooring loads and dynamic response. However, conversely to traditional offshore engineering applications, experience in modelling mooring systems for WECs is limited, due to their unique requirement of maximising the motion while minimising loads and costs. Even though modelling approaches and software are available for this application, guidelines and critical comparison are still scarce. This paper proposes a discussion and validation of three mooring-line models: one quasi-static approach (developed in-house) and two dynamic lumped-mass approaches (the open source MoorDyn and the commercial OrcaFlex). The case study is a 1:32-scale prototype of a floating oscillating water column WEC tested in a wave tank, with three mooring lines, each one comprising of a riser and a clump weight. Validation, performed by imposing fairlead displacements and comparing resulting tensions, shows good agreement. The small scale may induce numerical instabilities and uncertainties in the parameter estimation. Finally, likely due to internal resonance of this particular mooring system, high-frequency content in the mooring tension is found, albeit absent in the kinematics of the floater.

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41

Kulikov, Vladimir G., and Albert A. Ashryatov. "Simulation And Development Of Electronic Ballast for High Pressure Discharge Lamps." Issue 03-2021, no. 03-2021 (June 2021): 86–92. http://dx.doi.org/10.33383/2021-024.

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The advantages and disadvantages of using electromagnetic ballasts for power supply of high pressuredischarge lamps (HPDL) are considered. The advantages of using electronic ballasts for supplying HPDL are shown. The analysis is fulfilled of the operation of the HPDL when powered by a high-frequency current, in particular, high-pressure sodium lamps (HPSL). It is indicated that when high-pressure discharge lamps are supplied with a high-frequency current, acoustic resonance may appear. The basic requirements to be met by electronic ballasts for HPSL have been determined. The topology of construction of electronic ballasts for supplying HPDL with a capacity of up to 1 kW has been selected. It has been established that half-bridge converters with inductive ballast and active power factor corrector (PFC) allow maintaining a stable power on the lamp while changing its parameters and efficiency. Mathematical modelling of the electronic ballast based on a half-bridge converter and an ignition device for the sodium discharge lamps DNaT type has been carried out. According to the proposed topology, the electronic ballast was developed for a DNaT 600 lamp powered from the 380 V network. Test operation of the lamps confirmed the reliability of the proposed electronic ballast topology.

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42

Ghasemi, Mohamad Amin, Seyed Fariborz Zarei, Saeed Peyghami, and Frede Blaabjerg. "A Theoretical Concept of Decoupled Current Control Scheme for Grid-Connected Inverter with L-C-L Filter." Applied Sciences 11, no. 14 (July 6, 2021): 6256. http://dx.doi.org/10.3390/app11146256.

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This paper proposes a nonlinear decoupled current control scheme for a grid-connected inverter with LCL filter. Decoupling the active and reactive current control channels is one of the main demands in the control of inverters. For inverters with an L filter, the decoupling can be achieved by a proper feed-forward of grid voltages. However, the coupling of channels is a complex issue for converters with LCL filters. The resonance mode of the LCL filter may cause instability, which adds more complexity to the analysis. In this paper, state equations of the system are provided, which highlight the coupling between active and reactive currents injected into the grid. Accordingly, a non-linear control scheme is proposed which effectively decouples the channels and dampens the resonant modes of the LCL filter. The stability of the proposed control method is verified by the Lyapunov criterion. Independency of the system stability to the grid-impedance is another feature of the proposed approach. Moreover, only grid-side currents are needed for implementation of the proposed scheme, avoiding the need for additional current sensors for the output capacitor and grid-side inductor. For accurate modelling of the inverter, the computation and PWM sampling delays are included in the controller design. Finally, various case studies are provided that verify the performance of the proposed approach and the stability of the system.

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Savarimuthu, Kirubaveni, Radha Sankararajan, and Sudha Murugesan. "Design and implementation of piezoelectric energy harvesting circuit." Circuit World 43, no. 2 (May 2, 2017): 63–71. http://dx.doi.org/10.1108/cw-12-2016-0065.

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Purpose The purpose of this paper is to present the design of a piezoelectric vibration energy generator with a power conditioning circuit to power a wireless sensor node. Frequency and voltage characterization of the piezoelectric energy harvester is performed. A single-stage AC–DC power converter that integrates the rectification and boosting circuit is designed, simulated and implemented in hardware. Design/methodology/approach The designed power conditioning circuit incorporates bridgeless boost rectification, a lithium ion battery as an energy storage unit and voltage regulation to extract maximum power from PZT-5H and to attain higher efficiency. The sensor node is modelled in active and sleep states on the basis of the power consumption. Dynamic modelling of the lithium ion battery with its state of charging and discharging is analysed. Findings The test result shows that the energy harvester produces a maximum power of 65.9 mW at the resonant frequency of 21.4 Hz. The designed circuit will operate even at a minimum input voltage of 0.5 V. The output from the harvester is rectified, boosted to a 7-V DC output and regulated to 3.3 V to the power C_Mote wireless sensor node. The conversion efficiency of the circuit is improved to 70.03 per cent with a reduced loss of 19.76 mW. Originality/value The performance of the energy harvester and the single-stage power conditioning circuit is analysed. Further, the design and implementation of the proposed circuit lead to an improved conversion efficiency of 70.03 per cent with a reduced loss of 19.76 mW. The vibration energy harvester is integrated with a power conditioning circuit to power a wireless sensor node C_Mote. The piezoelectric vibration energy harvester is implemented in real time to power C_Mote.

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Yu, Ting, Xikun Chen, and Dongjing Wu. "A Novel LLC Resonant Converter Circuit-Input Parallel Output Series Subside Resonant LLC Resonant Converter." Journal of Physics: Conference Series 1449 (January 2020): 012009. http://dx.doi.org/10.1088/1742-6596/1449/1/012009.

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Oruganti, R., and T. C. How. "Resonant-tank control of parallel resonant converter." IEEE Transactions on Power Electronics 8, no. 2 (April 1993): 127–34. http://dx.doi.org/10.1109/63.223963.

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Jabbari, M. "Resonant inverting-buck converter." IET Power Electronics 3, no. 4 (2010): 571. http://dx.doi.org/10.1049/iet-pel.2009.0011.

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Borage, Mangesh, K. V. Nagesh, M. S. Bhatia, and Sunil Tiwari. "Resonant Immittance Converter Topologies." IEEE Transactions on Industrial Electronics 58, no. 3 (March 2011): 971–78. http://dx.doi.org/10.1109/tie.2010.2047835.

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Jong-Woo Choi and Seung-Ki Sul. "Resonant link bidirectional power converter. I. Resonant circuit." IEEE Transactions on Power Electronics 10, no. 4 (July 1995): 479–84. http://dx.doi.org/10.1109/63.391946.

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Jabbari, Masoud, and Fateme Barati. "New resonant LCL boost converter." IET Power Electronics 7, no. 7 (July 2014): 1770–76. http://dx.doi.org/10.1049/iet-pel.2013.0519.

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Cyr, J. M., K. Al-Haddad, L. A. Dessaint, M. Saad, and V. Rajagopalan. "Comparison of resonant converter topologies." Canadian Journal of Electrical and Computer Engineering 20, no. 4 (December 1995): 193–201. http://dx.doi.org/10.1109/cjece.1995.7102076.

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