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1

Shao, Zhu Lei. "A Flyback 25W Switching Power Supply for Electric Vehicle." Applied Mechanics and Materials 571-572 (June 2014): 889–92. http://dx.doi.org/10.4028/www.scientific.net/amm.571-572.889.

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In order to keep the stability of the control circuit of electric vehicle, a flyback switching power supply was designed in this paper. The flyback switching power supply adopting current control mode PWM chip UC3842, and the output power of flyback switching power supply is 25W. In the design process of flyback switching power supply, the component parameters of control loop are worked out thoroughly. The flyback transformer was designed by considering the maximum pressure value of power switch. From the experimental results, the flyback switching power supply can work stably in the full load condition. The flyback switching power supply has excellent stability and dynamic characteristics.
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2

Ho, Tze Yee, Chih Hsien Lin, and Lung Hsian Yang. "The Design Practice and Implementation of a Flyback Converter." Applied Mechanics and Materials 130-134 (October 2011): 1573–77. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1573.

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The design practice and simulation as well as implementation of a flyback converter are presented in this paper. Detail design considerations for each component in flyback converter are addressed and discussed. Based on the simulation results, a flyback converter is then realized and implemented. The experimental results show the verification for the design and implementation of the flyback converter. This paper concludes that the design of a flyback converter based on the proposed design practice, can reduce the development schedule duration and further alleviate the human resources need.
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3

Kanth, Saqib Asgar, and Baziga Youssuf. "Simulation of Flyback Converter in MATLAB with and Without the Use of Input Filter." International Journal of Innovative Technology and Exploring Engineering 11, no. 12 (2022): 23–26. http://dx.doi.org/10.35940/ijitee.l9314.11111222.

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Flyback converter belongs to a category of converters with isolation. This paper presents a simplest approach to simulate single phase AC-DC Flyback Converter with and without filter. The use of LC filter reduces the input frequency harmonics and the Total Harmonic Distortion (THD) is analyzed. The Flyback converter is used to step up the input voltage by varying the duty cycle. The use of Flyback Converter is preferred because of the simpler design and lesser number of components and simpler control strategy. This paper deals with the closed loop simulation of a Flyback converter and its THD analysis in MATLAB.
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4

M, Bhuvanesan, Elanagan S, Kokila P, Gowsalya G, and S. Elango. "Design and Implementation of Closed loop control for Flyback Converter." Journal of Electrical Engineering and Automation 5, no. 2 (2023): 191–206. http://dx.doi.org/10.36548/jeea.2023.2.004.

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One of the high frequency switching power supply circuits is the flyback converter. Due to its inexpensive cost and electrical isolation properties, it is mostly employed in low power applications. It is well known that high frequency switching results in losses and lowers inverter efficiency, particularly at low powers. Consequently, a flyback DC-DC converter that is run in a closed control loop is explained in this study. Closed-loop control is the proposed topology for the flyback converter. For the same input/output conditions, the findings from the closed-loop converter are compared to those from the open-loop feedback topology. A closed-loop flyback has been found to be more effective than an open-loop flyback. MATLAB simulates the outcomes. One of the high frequency devices is the flyback converter.
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5

Saqib, Asgar Kanth, and Youssuf Baziga. "Simulation of Flyback Converter in MATLAB with and Without the Use of Input Filter." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 11, no. 12 (2022): 18–21. https://doi.org/10.35940/ijitee.L9314.11111222.

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<strong>Abstract:</strong> Flyback converter belongs to a category of converters with isolation. This paper presents a simplest approach to simulate single phase AC-DC Flyback Converter with and without filter. The use of LC filter reduces the input frequency harmonics and the Total Harmonic Distortion (THD) is analyzed. The Flyback converter is used to step up the input voltage by varying the duty cycle. The use of Flyback Converter is preferred because of the simpler design and lesser number of components and simpler control strategy. This paper deals with the closed loop simulation of a Flyback converter and its THD analysis in MATLAB
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6

Leng, Jian Wei, and Fei An. "The Influence of Modulation Voltage Flyback to LFMCW Radar’S Beat Signal." Applied Mechanics and Materials 130-134 (October 2011): 1880–84. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1880.

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This thesis focuses on the influence of VCO modulation voltage on LFMCW radar beat signal. Firstly, analysised the serious effect to beat signal spectrum caused by flyback voltage. Because of the false frequency component would be produced by voltage flyback. So that the radar measurement system can't be measured the correct distance information from the inaccurate peak detection. Thus, both digital signal processing and hardware produce synchronized signal are used to solve the bad influence by voltage flyback brought to LFMCW radar. Finally, compared the processing results with the null group, results shown that modulation voltage flyback would brought great difficulties on signal spectrum analysis, thus, the disturbance signal of flyback section should be processed during practice.
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7

EFENDI, MOH ZAENAL, DEWI KUSUMA WATI, and LUCKY PRADIGTA SETIYA RAHARJA. "Paralel Flyback Converter sebagai PFC pada Lampu LED menggunakan Fuzzy Type-2." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 9, no. 4 (2021): 938. http://dx.doi.org/10.26760/elkomika.v9i4.938.

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ABSTRAKPeralatan elektronika umumnya memerlukan catu daya berupa sumber tegangan DC yang berasal dari sumber tegangan AC 220 V yang disearahkan menggunakan penyearah gelombang penuh. Pemasangan filter kapasitor pada sisi output penyearah menyebabkan bentuk gelombang arus masukan terdistorsi sehingga menimbulkan arus harmonisa yang mengakibatkan nilai faktor daya menjadi rendah. Artikel ini membahas mengenai paralel flyback konverter sebagai PFC (Power Factor Correction) pada lampu LED 36 V/60 W menggunakan algoritma fuzzy type-2. Flyback konverter pertama sebagai regulator tegangan DC bekerja dalam kondisi CCM (Continuous Conduction Mode). Flyback konverter kedua sebagai PFC bekerja dalam kondisi DCM (Discontinuous Conduction Mode) sehingga konverter bersifat resistif. Hasil simulasi menunjukkan bahwa paralel flyback konverter dapat memperbaiki faktor daya dari 0.597 menjadi 0.903 dan dapat menjaga tegangan keluaran konstan sebesar 36 V menggunakan algoritma fuzzy type-2 serta arus input yang dihasilkan memenuhi standar internasional hamonisa IEC61000-3-2 kelas C.Kata kunci: PFC, flyback konverter, IEC61000-3-2, lampu LED, fuzzy type-2 ABSTRACTElectronic equipment generally requires a DC voltage source that comes from a rectified 220 AC voltage source using full-wave rectifier. Installing capacitor filter on the output of rectifier makes the input current waveform becoming distorted that cause harmonic current which results in low power factor value. This article discusses parallel flyback converter as PFC (Power Factor Correction) on 36 V/60 W LED lamp using fuzzy type-2 algorithm. The first flyback converter as voltage dc regulator works in CCM (Continuous Conduction Mode). The second flyback converter as PFC works in DCM (Discontinuous Conduction Mode) to make the resistive converter. The simulation results shows the parallel flyback converter can improve the power factor from 0.597 to become 0.903 and can maintain a constant output voltage of 36 V using fuzzy type-2 algorithm and the input current meets the international harmonics standard of IEC61000-3-2 class C.Keywords: PFC, flyback converter, IEC61000-3-2, LED lamp, fuzzy type-2
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8

BRAMBILLA, ANGELO. "SNUBBER BEHAVIOR AND DESIGN IN FLYBACK CONVERTERS FOR ISOLATED IGBT DRIVERS." Journal of Circuits, Systems and Computers 05, no. 03 (1995): 523–29. http://dx.doi.org/10.1142/s0218126695000321.

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When flyback converters are connected to floating loads, voltage swings at the output can give rise to spikes which pass through the flyback transformer stray capacitor. This happens when flyback converters supply IGBT floating gate drivers. These voltage spikes can interfere with the correct behavior of the gate driver. In order to reduce the transformer stray capacitance, the two windings must be wound on the opposite sides of the core. However, this reduces the coupling factor of the transformer by increasing its leakage inductance and snubbers must be employed in some cases. This paper deals with snubber design and behavior for flyback converter applications. Since it is shown that snubbers transfer the energy through the flyback transformer, they should be designed in a different way with respect to conventional applications.
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9

Saragi, Yosua Hamonangan, Abdul Syakur, and Hadha Afrisal. "PERANCANGAN PEMBANGKITAN TEGANGAN TINGGI DC DENGAN TRAFO FLYBACK." Transient: Jurnal Ilmiah Teknik Elektro 9, no. 4 (2020): 597–604. http://dx.doi.org/10.14710/transient.v9i4.597-604.

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Penggunaan tegangan tinggi tidak hanya untuk keperluan transmisi, tetapi juga dapat digunakan sebagai pemaanfaatan untuk pembuatan perangkap serangga penggangu bahkan berbahaya dengan cara Short Circuit tegangan tinggi dengan tingkat keamanan yang tinggi. Studi tentang tegangan tinggi yang dimanfaatkan untuk membunuh serangga penggangu sering memberi para insinyur wawasan yang berharga untuk meningkatkan keandalan jangka panjang dari peralatan tegangan tinggi tersebut. Pada umumnya, tegangan tinggi dibangkitkan menggunakan pembangkit tegangan tinggi konvensional yang berukuran besar. Oleh karena itu, diperlukan rangkaian yang lebih sederhana untuk membangkitkan tegangan tinggi, salah satunya menggunakan konverter flyback. Konverter flyback merupakan konverter direct curent to direct current (DC-DC) yang memiliki isolasi di antara masukan dan keluarannya. Komponen utama dari konverter flyback adalah trafo step up dan komponen pensaklaran. Pada Penelitian ini dirancang jendela perangkap dengan memanfaatkan konverter flyback untuk membangkitkan tegangan tinggi. Jenis trafo step up dan komponen pensaklaran yang digunakan adalah trafo flyback dari monitor CRT (Cathode Ray Tube) dan MOSFET IRFP460. Tegangan tinggi hasil pembangkitan konverter flyback kemudian di pasang pada kasa jendela perangkap serangga.
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10

Bielskis, Edvardas, Martynas Šapurov, and Andrius Platakis. "Investigation of Flyback Transformer Flux Leakage Reduction Ways." Mokslas - Lietuvos ateitis 9, no. 3 (2017): 312–17. http://dx.doi.org/10.3846/mla.2017.1037.

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Results of experimental investigation and design optimization of flyback transformer are presented. Aim of the work is to investigate experimentally the impact of the flyback transformer design on the flux leakage and maximal output power. It is difficult to evaluate the effect of the leakage flux mathematically because it depends on various factors: the position of the windings relative to each other; the position of the windings in the transformer; the distance between the winding. A multi-winding flyback transformer was used for experiments. Using the results of the experiments optimal design of the investigated flyback transformer was defined.
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11

Pratiwi, Novy Arizka, Abdul Syakur, and Karnoto Karnoto. "PERANCANGAN PEMBANGKIT TEGANGAN TINGGI IMPULS 11,20 kV DENGAN MENERAPKAN ZERO VOLTAGE SWITCHING (ZVS) PADA KONVERTER FLYBACK." Transmisi 20, no. 1 (2018): 8. http://dx.doi.org/10.14710/transmisi.20.1.8-14.

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Tegangan tinggi tidak hanya digunakan untuk keperluan transmisi, tetapi juga untuk penelitian di laboratorium. Pada umumnya, tegangan tinggi dibangkitkan menggunakan pembangkit tegangan tinggi konvensional yang berukuran besar. Oleh karena itu, diperlukan rangkaian yang lebih sederhana untuk membangkitkan tegangan tinggi, misalnya menggunakan konverter flyback. Konverter flyback merupakan konverter DC-DC yang memiliki isolasi di antara masukan dan keluarannya. Komponen utama dari konverter flyback adalah trafo step up dan komponen pensaklaran. Pada penelitian ini dirancang penerapan zero voltage switching (ZVS) pada konverter flyback untuk membangkitkan tegangan tinggi. Trafo step up dan komponen pensaklaran yang digunakan adalah trafo flyback dari monitor CRT (Cathode Ray Tube) dan MOSFET IRFP460. Tegangan tinggi hasil pembangkitan konverter flyback diterapkan pada reaktor ozon. Pada pengujian mode pensaklaran dengan menerapkan ZVS diketahui tegangan drain-source MOSFET (VDS) bernilai nol ketika MOSFET turn off. Pada pengujian tanpa beban dengan variasi duty cycle diperoleh tegangan keluaran sebesar 11,20 kV pada duty cycle 60%. Pengujian tanpa beban dengan variasi frekuensi switching diperoleh tegangan keluaran sebesar 10,80 kV pada frekuensi switching 23 kHz. Pengujian berbeban dengan reaktor ozon sudah dapat menghasilkan ozon dengan konsentrasi 0,02-0,06 ppm pada tegangan operasi 7,4-8,4 kV.
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12

Yuan, You Chen, Yang Zhang, and Yu Wei Chen. "Current-Fed Flyback Push-Pull DC-DC Converter Based on Three-Phase Transformer." Applied Mechanics and Materials 614 (September 2014): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amm.614.164.

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Three-phase current-fed flyback push-pull dc-dc converter is proposed in this paper, which is a new circuit topology putting into practice based on current-fed flyback push-pull dc-dc converter. Structure is simplified; cost is cut down; efficiency and reliability are improved all by the high frequency three-phase transformer technique that carries out functions of flyback transformer as well as push-pull transformer at the same time. Three-phase transformer can be separated into relatively independent functions of flyback transformer and push-pull transformer with the reluctance produced by the magnetic gap in the central phase; the flyback transformer produces only common-mode flux in the magnetic circuit of push-pull transformer and does not influence its output signal; the magnetic flux in push-pull transformer is blocked by the magnetic gap and can only flow through the outer magnetic loop. Investigational device is designed; static and dynamic characteristics are observed and test results are verified by the experimentation.
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13

Bielskis, Edvardas, Martynas Šapurov, and Andrius Platakis. "INVESTIGATION OF ELECTRICAL POWER GRID MICROINVERTER EFFICIENCY / ELEKTROS TINKLO MIKROINVERTERIO NAUDINGUMO FAKTORIAUS TYRIMAS." Mokslas – Lietuvos ateitis 8, no. 3 (2016): 296–301. http://dx.doi.org/10.3846/mla.2016.925.

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In this paper the investigation results of a boost Flyback convert-er, which is used in a micro-inverter, are presented. The efficien-cy characteristics of the converter at various carrier frequencies and output loads were investigated. An alternative circuit diagram solution, which is less complex in structure and has fever com-ponents but has the same properties as the classic circuit scheme, for the converter is proposed. The proposed Flyback converter is less expensive. Its efficiency is 2–3 % higher than the classic Flyback converter when the converter output power is less than 95 W. Darbe tirtas fotovoltinės energijos moduliams skirto mikroinverterio įtampą aukštinantis Flyback topologijos keitiklis. Ištirtos šio keitiklio naudingumo faktoriaus charakteristikos esant įvairioms nešlio dažnių ir keitiklio tiekiamos energijos galioms. Ištyrus klasikinį keitiklį, pasiūlytas patobulintas keitiklis, kuriame naudojama mažiau elektronikos komponentų. Pasiūlytas Flyback keitiklis yra pigesnis. Jo naudingumo faktorius yra 2–3 % aukštesnis už klasikinio, kai tiekiama keitiklio galia nesiekia 95 W.
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14

Zhang, Feng, Yunxiang Xie, Yanshen Hu, Gang Chen, and Xuemei Wang. "A Hybrid Boost–Flyback/Flyback Microinverter for Photovoltaic Applications." IEEE Transactions on Industrial Electronics 67, no. 1 (2020): 308–18. http://dx.doi.org/10.1109/tie.2019.2897543.

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Yi, Chun Yang, Tian Fa Liao, Qian Jin Ma, Chang Wen Dong, and Jia Xiang Xue. "Application of Dual Switch Flyback Converter in Three-Phase Photovoltaic Inverter." Advanced Materials Research 986-987 (July 2014): 1759–62. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1759.

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Auxiliary power of Three-phase photovoltaic inverter is supplied by solar cells with wide input ranging from 140V to 1000V.The conventional single-switch flyback converter exists too high voltage stress in power switch to be applied in this inverter. This paper presents a dual-switch flyback converter in which the voltage stress of each switch is slightly higher than the input voltage when switches turn off, at the same time , the leakage inductance energy is recycled back into the inputside; otherwise, this topology needs no snubber circuit, so it is much more efficient than single switch flyback. The dual switch flyback converter with seven outputs is successfully applied in 10KW three phase PV inverter.
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Pesce, Cristian, Javier Riedemann, Ruben Pena, Werner Jara, Camilo Maury, and Rodrigo Villalobos. "A Modified Step-Up DC-DC Flyback Converter with Active Snubber for Improved Efficiency." Energies 12, no. 11 (2019): 2066. http://dx.doi.org/10.3390/en12112066.

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The research on DC-DC power converters has been a matter of interest for years since this type of converter can be used in a wide range of applications. The main research is focused on increasing the converter voltage gain while obtaining a good efficiency and reliability. Among the different DC-DC converters, the flyback topology is well-known and widely used. In this paper, a novel high efficiency modified step-up DC-DC flyback converter is presented. The converter is based on a N-stages flyback converter with parallel connected inputs and series-connected outputs. The use of a single main diode and output capacitor reduces the number of passive elements and allows for a more economical implementation compared with interleaved flyback topologies. High efficiency is obtained by including an active snubber circuit, which returns the energy stored in the leakage inductance of the flyback transformers back to the input power supply. A 4.7 kW laboratory prototype is implemented considering four flyback stages with an input voltage of 96 V and an output voltage of 590 V, obtaining an efficiency of 95%. The converter operates in discontinuous current mode then facilitating the output voltage controller design. Experimental results are presented and discussed.
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Shanmugasundaram, Ravivarman, K. Sai Ramana, K. Akshay, K. Dilip, and Hardik Dahiya. "Analysis and Simulation of Boost-Flyback Converter for Renewable Energy Integration." E3S Web of Conferences 547 (2024): 01017. http://dx.doi.org/10.1051/e3sconf/202454701017.

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Analysis and Simulation of Boost-Flyback Converter for Renewable Energy Integration is mainly focusing on boosting and decreasing the voltages coming from the renewable energy sources. The proposed methodology combines the advantages of both Boost and Flyback topologies, providing enhanced efficiency, reduced voltage stress, and improved transient response. The Boost-Flyback Converter employs a two-stage topology, where the Boost stage is responsible for stepping up the input voltage, and the flyback stage facilitates energy transfer and output voltage regulation. The analysis includes a detailed examination of the converter's operating principles, voltage and current waveforms, and control strategies. A comprehensive simulation study is conducted using advanced simulation tools to validate the converter's performance under various operating conditions and load profiles.
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Tseng, Sheng-Yu, and Jun-Hao Fan. "Zeta/Flyback Hybrid Converter for Solar Power Applications." Sustainability 14, no. 5 (2022): 2924. http://dx.doi.org/10.3390/su14052924.

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This paper presents a zeta/flyback hybrid converter with a PV array as its power source for an LED street light or digital signage application. When the PV array is used in a LED lighting system, it needs a battery charger and discharger. In order to increase the areas of application for different PV arrays, a zeta converter has been adopted as the battery charger. In addition, since a flyback converter has a simpler circuit, it is used as the battery discharger. Due to the leakage inductor of the transformer in the flyback converter, an active clamp circuit is used to recover the energy stored in leakage inductance. Zeta and flyback converters use switch integration techniques to form the proposed zeta/flyback hybrid converter. With this approach, the proposed system has less components, a lighter weight, a smaller size, and higher conversion efficiency. Finally, a prototype of the proposed hybrid converter with an output voltage of 12 V and output power of 50 W has been implemented to verify its feasibility. It is suitable for LED lighting system applications.
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Yener, Namik, and Ali Bekir Yildiz. "Difference equation−based transient-state and steady-state analysis of flyback converter circuit." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 1 (2019): 81–94. http://dx.doi.org/10.1108/compel-12-2017-0506.

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Purpose This paper aims to present how to use the difference equations for analysis of flyback converter circuit. Design/methodology/approach Switching circuits have variable structural topologies. In every switched-mode, they have different dynamics and different equations. First, the exact equivalent circuit of flyback converter, then, set of difference equations are obtained. The flyback converter has a nonlinear structure; however, the presented technique allows the circuit equations to be linear. The transient-state and steady-state analysis of flyback converter, one of popular switching circuits, are carried out by using difference-equations. Findings The proposed analysis method does not contain any numerical approximation and the results are in the form of exact solution. Another superiority of the method is that the desired instantaneous values can be obtained directly, the simulation does not need to be started from the beginning. Numerical results agree well with the theoretical results of flyback converter. The simulation results obtained by using the proposed method and Matlab-based results are compared. Originality/value This paper contributes a different mathematical background for analysis of switching converters to the literature.
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Muthi’ah, Anisah, Amien Rahardjo, Faiz Husnayain, and Chairul Hudaya. "Design of Mazzilli’s Zero Voltage Switching (ZVS) Circuit as Plasma Glow Discharge Generator." ELKHA 12, no. 2 (2020): 112. http://dx.doi.org/10.26418/elkha.v12i2.41769.

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Purification water has several methods; one of them is the plasma generation. The circuit used to generate plasma is Zero Voltage Switching (ZVS), where its use uses the resonance circuit concept. The main category to generate plasma glow discharge is the circuit should generate high voltage output with a current range from 10-6 A to 1 A. In this study, when ZVS connected to the flyback converter with an input voltage of 12 V, the output values of 11 kV and 11 μA were obtained. In comparison, if ZVS was not connected to the flyback converter, the circuit is less stable, and the output value is weak because the output values only reach 8.97 kV and 8.97 μA. For maximum output, the ZVS circuit should be connected to the converter circuit due to the flyback converter can repair and strengthen the voltage. The flyback converter circuit is affected by the diode and capacitance effects. The effect of using capacitors in a flyback converter circuit is when the capacitance is too low, the ripple will form. Then when capacitance reaches a specific value, the ripple will decrease, and the voltage graph will approach a straight line. Hence the use of components in the ZVS and the flyback converter need to be considered because it affects how the release of plasma glow discharge will form.
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Zheng, Feng. "Research on the Design of Quasi Resonant Flyback Switching Power Supply Based on Electronic Information." Journal of Physics: Conference Series 2023, no. 1 (2021): 012049. http://dx.doi.org/10.1088/1742-6596/2023/1/012049.

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Abstract With the popularization and in-depth development of electrification and electronization, the demand for switching power supply in all walks of life is also constantly strengthened, especially for the key indicators and parameters of switching power supply, such as performance, efficiency and reliability. Based on this, this paper first analyses the connotation and components of flyback switching power supply, then studies the design of quasi resonant flyback power supply, and finally gives the realization path and strategy of quasi resonant flyback switching power supply.
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Peiravan, Zahra, Majid Delshad, and Mohammad Reza Amini. "A new zero voltage transition interleaved flyback converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 2 (2022): 1026. http://dx.doi.org/10.11591/ijpeds.v13.i2.pp1026-1036.

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The paper introduced a new zero voltage transition (ZVT) interleaved flyback converter which has two similar flyback converters. Two flyback converters are in parallel connection and auxiliary circuit in this converter provides ZVT condition for all of the main switches and also provides zero current switching and zero voltage zero current switching (ZVZCS) conditions for the auxiliary switch. Also, ZCS conditions are created for diodes turning off, so reverse recovery problem is solved. The auxiliary circuit in the suggested converter is modular, and by adding parallel branches to the flyback circuit, this circuit can provide soft switching conditions for all switches without significantly change. A complete analysis of the converter is provided and its operating intervals are explained. A 180 W laboratory prototype of the converter is made to approve the theoretical calculations. The experimental results show 7.7% increase in efficiency.
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Csizmadia, Miklos, and Miklos Kuczmann. "A Novel Feedback Linearisation Control of Flyback Converter." Power Electronics and Drives 8, no. 1 (2023): 74–83. http://dx.doi.org/10.2478/pead-2023-0006.

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Abstract This paper presents a novel approach for feedback linearisation in a continuous conduction mode (CCM) of the flyback converter. Due to the unstable zero dynamics, a flyback converter has highly non-linear behaviour. Flyback converters mostly use the indirect (current) control mechanism. In contrast, this paper shows a direct control of the output voltage of a flyback converter with feedback linearisation (a non-linear control method). In the designed controller, an error integrator is applied to improve the dynamic and steady-state behaviour of the controller. To design the feedback linearisation method, the state-space averaged model is determined. The converter and the proposed control are tested in a MatLab/Simulink environment, and the results are compared with other optimal controller methods. The results provide feedback about the efficiency and practical implementation of the proposed method.
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Zahra, Peiravan, Delshad Majid, and Reza Amini Mohammad. "A new zero voltage transition interleaved flyback converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 2 (2022): 1026–36. https://doi.org/10.11591/ijpeds.v13.i2.pp1026-1036.

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The paper introduced a new zero voltage transition (ZVT) interleaved flyback converter which has two similar flyback converters. Two flyback converters are in parallel connection and auxiliary circuit in this converter provides ZVT condition for all of the main switches and also provides zero current switching and zero voltage zero current switching (ZVZCS) conditions for the auxiliary switch. Also, ZCS conditions are created for diodes turning off, so reverse recovery problem is solved. The auxiliary circuit in the suggested converter is modular, and by adding parallel branches to the flyback circuit, this circuit can provide soft switching conditions for all switches without significantly change. A complete analysis of the converter is provided and its operating intervals are explained. A 180 W laboratory prototype of the converter is made to approve the theoretical calculations. The experimental results show 7.7% increase in efficiency.
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Torre, Adolfo III Echeandia La, Ricardo A. R. Feldmann, and Ederson Zanchet. "Trabalho de conclusão do projeto flyback / Flyback project completion work." Brazilian Journal of Development 7, no. 6 (2021): 62012–27. http://dx.doi.org/10.34117/bjdv7n6-535.

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Sulong, Dome, and Chuttchaval Jeraputra. "A Grid Connected Flyback Inverter with a DC Active Filter for Photovoltaic Cells." Applied Mechanics and Materials 781 (August 2015): 406–9. http://dx.doi.org/10.4028/www.scientific.net/amm.781.406.

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This paper presents the design and control of a grid-connected flyback inverter with a DC active filter for photovoltaic (PV) cells. The proposed topology consists of a flyback DC-AC inverter and a DC active filter that can operate independently. The flyback inverter, controlled in digital peak current mode, regulates the full-wave rectified sinusoidal current later, which is alternately inverted and injected into the grid. The DC active filter regulates the smooth current/power drawn from a PV module by using cascaded proportional-integral (PI) controllers. Analysis, design and control of the proposed topology are presented. A 100W/220V/50Hz prototype is developed and tested. The experimental results show that the proposed flyback inverter with a DC active filter is capable of regulating a sinusoidal current fed into the grid, actively filtering the DC current/power and achieving reasonably high energy conversion efficiency.
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Ahmad Syarip Hidayatulloh, Rizki Idul Fitriansyah, Sandi Apriliyanto, et al. "Analysis of Transformer Using Flyback Converter Circuit." Journal of Educational Engineering and Environment 1, no. 2 (2023): 1–6. http://dx.doi.org/10.36526/jeee.v1i2.2356.

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This paper discusses two types of transformers 3 A and 5 A with the addition of a flyback converter circuit. The transformer 3 A is only able to lower the DC output voltage and cannot produce an AC output voltage. So that the addition of a flyback converter circuit is proposed to change the AC output voltage and increase the voltage based on the desired load. The results of the 3 A transformer test obtained an increased output voltage from 12.21 Vdc to 18.04 Vdc with a constant time period of 1 minute. While testing the 5 A transformer shows that the increase in output voltage is obtained by adding a flyback converter circuit. The result of the output voltage with the addition of a flyback converter circuit reaches 221 Vac to 252.2 Vac. The increase in output voltage is directly proportional to a constant time period of one minute.
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Kim, Chan-Hyeok, and Dae-Su Park. "A Study on LED Driver Using Duty Cycle Split Method." Korea Industrial Technology Convergence Society 28, no. 4 (2023): 125–33. http://dx.doi.org/10.29279/jitr.2023.28.4.125.

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This study proposes a power factor correction (PFC) flyback converter, which uses film capacitors with longer lifespans instead of the existing electrolytic capacitor. Additionally, it adopts a coupled inductor and an LC resonance filter to mitigate the output ripple, which is inevitably generated by a film capacitor, and applies discontinuous conduction mode (DCM) for power factor correction. In contrast, this study measures the input and output voltages of the PFC flyback converter and the switching current for the DCM control and proposes a duty split method by adding a comparator and triangle wave to the control algorithm to reduce the current stress imposed on the components. Therefore, to validate the usefulness of the proposed DCM flyback converter with the coupled LC resonance filter, this study models the proposed DCM flyback converter and implements a test device with the same configuration, and subsequently evaluates the simulation and test results.
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Abood Abdul Kadhim, Afrah, Abdulhasan F. Abdulhasan, and Fatimah F. Jaber. "Improvement of Extracted Photovoltaic Power Using Artificial Neural Networks MPPT with Enhanced Flyback Controller." Iraqi Journal for Electrical and Electronic Engineering 21, no. 2 (2025): 237–50. https://doi.org/10.37917/ijeee.21.2.22.

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Due to the nonlinear electrical properties of PV generators, the width and performance of these frames could be enhanced by carrying them to operate at ultimate energy mark tracking. In this study, a versatile maximum power point tracking (MPPT) model using a modified Flyback controller with artificial neural network (ANN) technique as our proposed system. The hybrid Flyback/ANN controller is based on teaching and training a neural network, where the dataset is utilized to adjust the levitation converter which is taken care of by a stand-alone photovoltaic generator (PVG) with a Flyback controller. It is assumed that the results will be obtained by the ANN-MPPT system with the Flyback controller which provides low motions and shows a great implementation around the maximum power point compared to the PVG used with traditional MPPT algorithms such as Perturbation and Observation (P&amp;O).
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S.Saravana, kumar*, and M.E Ph.D.** Dr.R.Arulmozhiyal. "An Improved fly-back converter with H6 Type Inverter for agricultural Photovoltaic-Motor driven irrigation Applications." Turkish journal of electrical engineering and computer science 29, no. 4 (2021): 164–71. https://doi.org/10.5281/zenodo.5316826.

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In this paper, a design of interleaved flyback converter with H6 inverter topology is proposed. Flyback converter is one among the DC-DC converter with high frequency which is used or low power applications. Because of high frequency operation switching losses and stresses are more. To reduce stresses and losses across the switch of interleaved flyback converter is proposed. In the grid tied inverter system leakage current is one of the disadvantages and to avoid this H6 type inverter is used. With this advantage of H6 inverter and flyback converter this paper is mainly focused on stresses across switches and eliminating leakage current, harmonic reduction. Further the fast switching is proposed within converter in order to deliver maximum power transfer delivered to load through grid. To validate the overall performance the proposed converter modeled in MATLAB-SIMULINK and prototype developed using DSP DSP TMS320F28377S and connected to grid connected load.
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31

Xie, Lingling, and Lu Pang. "Research on the Nonlinear Dynamic Characteristics of Fractional-Order Flyback Converter Based on Generalized Euler Method." Electronics 14, no. 5 (2025): 977. https://doi.org/10.3390/electronics14050977.

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The nonlinear dynamic characteristics of a peak current regulation fractional-order (FO) flyback converter, considering the fractional nature of inductance and capacitance, are investigated in detail. First, the discrete iterative model of the fractional-order (FO) flyback converter under 10 kHz operating conditions is accomplished using the application of the Generalized Euler Method (GEM). On this basis, bifurcation diagrams, phase diagrams, and simulated time domain diagrams are used to describe the nonlinear dynamic behavior of the converter. The nonlinear dynamics of the converter are investigated through bifurcation and phase diagram analyses. A comprehensive examination is conducted to evaluate the impact of key parameters, including input voltage, reference current, and the fractional orders of inductance and capacitance, on the system’s stability. Furthermore, a comparative analysis is performed with conventional integer-order (IO) flyback converters to highlight the distinctive characteristics. The findings demonstrate that the FO converter manifests distinct nonlinear characteristics, including period-doubling bifurcation and chaotic behavior. Moreover, for identical parameter sets, the FO flyback converter is found to possess a smaller stability domain but a larger parameter region for bifurcation and chaos compared to its IO counterpart. This behavior allows the FO converter to more accurately capture the nonlinear dynamic characteristics of the flyback converter. Simulation results further substantiate the theoretical predictions.
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Bielskis, Edvardas, Martynas Šapurov, Gediminas Valiulis, and Dainius Balbonas. "FLYBACK MIKROINVERTERIO, SUDARYTO IŠ DVIEJŲ RAKTŲ, MODELIO MATLAB SIMULINK APLINKOJE SUDARYMAS IR TYRIMAS / DEVELOPMENT AND RESEARCH OF TWO SWITCH BASED FLYBACK MICROCONVERTER’S MATLAB SIMULINK MODEL." Mokslas - Lietuvos ateitis 10 (October 9, 2018): 1–6. http://dx.doi.org/10.3846/mla.2018.2853.

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Darbe pateikti siūlomo flyback tipo mikroinverterio, sudaryto iš dviejų raktų, modeliavimo rezultatai Matlab Simulink aplinkoje. Tyrimo tikslas – įvertinti siūlomo flyback mikroinverterio modelio veikimą virtualioje Matlab Simulink aplinkoje, kai mikroinverteris veikia autonomiškai (energetinėje saloje) ir lygiagrečiai su vietiniu elektros tinklu. Darbe imituojamas autonomiškas mikroinverterio darbas su netiesiniais elektros tinklo apkrovos elementais ir harmonikomis užterštame elektros tinkle. Taip siekiama įvertinti mikroinverterio tiekiamos į tinklą sinusinės formos srovės reakciją į tinklo įtampos harmoninius iškraipymus. Ištyrus pasiūlyto flyback mikroinverterio eksperimentinį modelį Matlab Simulink aplinkoje, nustatytas mikroinverterio išėjimo signalo atsparumas iškraipymams jam veikiant autonomiškai ir imituojant elektros tinklą, paveiktą aukštesniosiomis eilės harmonikomis.
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33

Yau, Yeu-Torng. "Resonant Asymmetrical Half-Bridge Flyback Converter." Applied Sciences 12, no. 13 (2022): 6685. http://dx.doi.org/10.3390/app12136685.

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The active clamp flyback (ACF) converter is gradually becoming popular in the application field of low or medium output power range due to its advantage of soft switching and high conversion efficiency. An asymmetric half-bridge (AHB) flyback converter has been proposed in previous studies. The main advantages of the AHB flyback are the same number of components as the ACF converter and the soft switching technique. In this paper, an AHB flyback converter with constant off-time (COT) plus pulse frequency modulation (PFM) is proposed, so that the resonant time is not affected by the input voltage and load, and can achieve a wide range of zero voltage switching (ZVS) operating range. Compared to pulse width modulation (PWM), the PFM control with COT can make the system more stable. Finally, a prototype circuit with a specification input of 48 V to an output of 2.5 V/8 A is made for verification.
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34

Lee, Yue-Lin, Han-Hsiang Chen, and Kuo-Ing Hwu. "Applying a Current Sharing Method Based on Partial Energy Processing to Multiphase LLC Resonant Converters." Energies 17, no. 15 (2024): 3859. http://dx.doi.org/10.3390/en17153859.

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In this paper, partial energy processing is applied to the current sharing technique for multiphase LLC resonant converters. The proposed circuit consists of an LLC resonant converter and a flyback converter, where the flyback converter is only used for partial energy processing. The input voltage of the LLC resonant converter is fine-tuned by the flyback converter to solve the problem of a voltage gain difference between the two phases of the LLC resonant converter caused by the error of the resonant tank components, which prevents the output current from being nonequalized. Since the compensation power is much smaller than the output power, and only one phase will be during circuit operation, the impact on the overall efficiency is minimal. Due to the low dependence between the LLC resonant converter and the flyback converter, they are operated at different switching frequencies. In addition, due to the low dependence between each phase, the circuit can be expanded using odd and even phases.
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35

Yu, Yannan, Mei Kong, Jichi Yan, and Yeqin Lu. "Optimization Strategy for Output Voltage of CCM Flyback Converter Based on Linear Active Disturbance Rejection Control." Applied Sciences 13, no. 23 (2023): 12786. http://dx.doi.org/10.3390/app132312786.

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To solve the problem of system output voltage fluctuation caused by interferences such as load fluctuation and internal inductor parameter perturbation in a flyback converter, a second-order linear active disturbance rejection control (LADRC) strategy based on output voltage is proposed in this paper. A small-signal model of a CCM flyback converter is established, and the equivalent transfer function of voltage control based on second-order LADRC is derived. A second-order LADRC is constructed, and a parameter design method for the controller is proposed. The response characteristics of the output voltage of the converter under five internal and external disturbances of different control strategies are compared and studied using MATLAB R2022b/Simulink simulation software, and a CCM flyback converter experimental platform based on dSPACE is built to verify the corresponding comparative experiments. The simulation and experimental results jointly verify the superiority of the control strategy for the anti-interference and robustness of the output voltage of the CCM flyback converter.
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36

Derkaoui, Mokhtaria, and Yamina Benhadda. "Flyback Micro-Converter Design with an Integrated Octagonal Micro-Transformer for DC-DC Conversion." International Journal of Electrical and Electronics Research 11, no. 4 (2023): 886–97. http://dx.doi.org/10.37391/ijeer.110402.

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The work presented in this paper concerns the design of an integrated flyback DC-DC micro-converter operating at high frequencies. The flyback converter consists of only one transformer. The integrated micro-transformer in the flyback micro-converter is composed of two planar stacked coils with spiral octagonal geometry. Basing on Mohan’s method, the geometrical parameters are evaluated. The different parasitic effects created in the stacked layers are grouped perfectly in the equivalent electrical circuit that summarizes all parasitic effects. The integrated micro-transformer is characterized by scattering parameters extraction. The thermal and electromagnetic effects generated in the micro-transformer are illustrated, using finite elements method on COMSOL Multiphysics 5.3 software. To validate the electrical model, the simulation of the flyback micro-converter containing the equivalent electrical circuit of the micro-transformer is established, using PSIM 9.0 software. The gap between the coils is considered as an integrated MIM capacitor created at high frequencies leads to create a low pass micro-filter with the secondary coil.
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37

MR., DEVENDRA P. JUMADE, and Nikhil Wadokar Prof. "COMPREHENSIVE STUDY OF HIGH FREQUENCY TRANSFORMER DESIGNING FOR MODIFIED FLYBACK CONVERTER." INTERNATIONAL JOURNAL OF INNOVATIONS IN ENGINEERING RESEARCH AND TECHNOLOGY 4, no. 11 (2017): 30–37. https://doi.org/10.5281/zenodo.1098518.

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The paper presents a special function improved Flyback converter is operate with better efficiency and compact size, which is prevail over most of the basic flyback converter downsides, and also keeping its inexpensiveness and lucidity. In certain, the converter permits the MOSFET OFF voltage to be less in amount and clamped to the input, thus healing the transformer leakage energy. As a result of effect, the duty cycle can be increase to unity, thus reducing the voltage stress across the output rectifier, and minimizing both the magnetizing inductance and the transformer bias current values. Moreover, to the auxiliary mosfet, the magnetizing current will negative, abolish the discontinuous conduction mode (DCM) of the basic Flyback and permits a smaller magnetizing inductance is to be selected. Besides, in contrast with the basic Flyback, the energy is supplied to the secondary side not only from the magnetizing inductance, but also from the introduced series capacitor, minimizing the transformer energy necessity. The improved converter makes also the soft-transitions possible for both mosfet. For all these reasons, as a more effective and compact size approximate, this topology shows better fulfillment&nbsp;in high power density inexpensive applications. This paper also presents practical design deliberation of high frequency transformers for flyback converters hiring High Frequency Transformer (HFT). In order to give insight to the reader, practical design examples are also provided.
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38

SHEN, Miao-sen. "Average modeling of Single Stage Flyback PFC+Flyback DC/DC converter." Journal of Zhejiang University SCIENCE 3, no. 1 (2002): 77. http://dx.doi.org/10.1631/jzus.2002.0077.

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39

Miao-sen, Shen, Kang Wan-ying, and Qian Zhao-ming. "Average modeling of Single Stage Flyback PFC+Flyback DC/DC converter." Journal of Zhejiang University-SCIENCE A 3, no. 1 (2002): 77–81. http://dx.doi.org/10.1631/bf02881847.

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40

Ponce-Silva, Mario, Daniel Salazar-Pérez, Oscar Miguel Rodríguez-Benítez, et al. "Flyback Converter for Solid-State Lighting Applications with Partial Energy Processing." Electronics 10, no. 1 (2020): 60. http://dx.doi.org/10.3390/electronics10010060.

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The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source. The re-arranged flyback is only a reductive topology and with no magnetic isolation. It was studied as a power supply for LEDs. A low frequency averaged analysis (LFAA) was used to determine the behavior of the proposed circuit and an equivalent circuit much easier to analyze was obtained. To validate the theoretical analysis, a design methodology was developed for the re-arranged flyback converter. The designed circuit was implemented in a 10 W prototype. Experimental results showed that the converter has a THDi = 21.7% and a PF = 0.9686.
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41

Adragna, Claudio, Giovanni Gritti, Angelo Raciti, Santi Agatino Rizzo, and Giovanni Susinni. "Analysis of the Input Current Distortion and Guidelines for Designing High Power Factor Quasi-Resonant Flyback LED Drivers." Energies 13, no. 11 (2020): 2989. http://dx.doi.org/10.3390/en13112989.

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Nowadays, LED lamps have become a widespread solution in different lighting systems due to their high brightness, efficiency, long lifespan, high reliability and environmental friendliness. The choice of a proper LED driver circuit plays an important role, especially in terms of power quality. In fact, the driver controls its own input current in addition to the LED output current, thus it must guarantee a high power factor. Among the various LED drivers available on the market, the quasi-resonant (QR) flyback topology shows interesting benefits. This paper aims at investigating and analyzing the different issues related to the input current distortion in a QR flyback LED driver. Several effects, such as the distortion caused by the ringing current, crossover distortion due to transformer leakage inductance and crossover distortion due to the input storage capacitor have been experimentally reported. These effects, not previously studied for a high power factor (Hi-PF) QR flyback, have been analyzed in depth. Finally, some practical design guidelines for a Hi-PF QR flyback driver for LED applications are provided.
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42

Yaqoob, Salam J., Jawad K. Raham, and Hassan A. Sadiq. "Analysis and Simulation of Current-source Flyback Inverter with Efficient BCM Control Strategy." WSEAS TRANSACTIONS ON ELECTRONICS 12 (November 8, 2021): 132–40. http://dx.doi.org/10.37394/232017.2021.12.18.

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The Flyback inverter is a single-stage power inverter which represent an attractive solution for photovoltaic (PV) grid-tied inverter application. The main advantages of a current-source flyback inverter are high power density and high efficiency due to its small, as well as low total harmonic distortion (THD) operation. However, a flyback topology works with Discontinuous Conduction Mode (DCM) control strategy has lower efficiency and poor THD values. In this paper, an efficient current-source flyback inverter topology works with Boundary Conduction Mode (BCM) control strategy is presented. Besides, an efficient incremental conductance (IC) maximum power point tracking (MPPT) is used to extract the maximum power from the PV module. To verify the proposed control a power simulator (PSIM) software is used. As a result, the simulation results indicates that the BCM control is more efficient than the DCM method for various weather conditions. Finally, the proposed BCM strategy is compared with DCM control in terms of THD and thus it is achieved lower THD contain in the injection current of grid.
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43

Yang, Chen, Fan Xie, Yanfeng Chen, Wenxun Xiao, and Bo Zhang. "Modeling and Analysis of the Fractional-Order Flyback Converter in Continuous Conduction Mode by Caputo Fractional Calculus." Electronics 9, no. 9 (2020): 1544. http://dx.doi.org/10.3390/electronics9091544.

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In order to obtain more realistic characteristics of the converter, a fractional-order inductor and capacitor are used in the modeling of power electronic converters. However, few researches focus on power electronic converters with a fractional-order mutual inductance. This paper introduces a fractional-order flyback converter with a fractional-order mutual inductance and a fractional-order capacitor. The equivalent circuit model of the fractional-order mutual inductance is derived. Then, the state-space average model of the fractional-order flyback converter in continuous conduction mode (CCM) are established. Moreover, direct current (DC) analysis and alternating current (AC) analysis are performed under the Caputo fractional definition. Theoretical analysis shows that the orders have an important influence on the ripple, the CCM operating condition and transfer functions. Finally, the results of circuit simulation and numerical calculation are compared to verify the correctness of the theoretical analysis and the validity of the model. The simulation results show that the fractional-order flyback converter exhibits smaller overshoot, shorter setting time and higher design freedom compared with the integer-order flyback converter.
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Arab Ansari, Sajad, Amir Reza Mizani, Siamak Ashouri, and Javad Shokrollahi Moghani. "Fault Ride-Through Capability Enhancement for Microinverter Applications." Journal of Renewable Energy 2019 (March 7, 2019): 1–12. http://dx.doi.org/10.1155/2019/1036156.

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Due to the fast growth of single-phase grid-connected photovoltaic (PV) systems, the existing grid codes are expected to be modified to guarantee the availability, quality, and reliability of the electrical system. Therefore, the future single-phase PV systems should become smarter and support low voltage ride-through (LVRT) capability, which are required for three-phase wind power systems. In this paper, the operation principle of a flyback inverter in a low-voltage ride-through operation is demonstrated in order to map future challenges. The steady state performance of the flyback inverter under voltage rise and drop conditions at boundary conduction mode (BCM) and discontinues conduction mode (DCM) is studied theoretically. The simulation results of the flyback inverter for various grid faults are presented to verify the theoretical analyses. The results indicate the fact that the flyback inverter at BCM condition can provide LVRT capability for photovoltaic microinverter applications in distributed generation (DG) systems, even though it does not need any auxiliary control branches and any limitations in components design.
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45

Nazriah, Mahmud, Azli Yahya, Mohammed Rafiq Abdul Kadir, Andromeda Trias, and Safura Hashim Nor Liyana. "Modeling of Flyback Converter for Micro Machining Biomedical Component." Applied Mechanics and Materials 284-287 (January 2013): 1028–32. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1028.

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Electrical Discharge Machining is a controlled process where pulsed electrical discharge is used to erode metal in a workpiece. A number of EDM power supplies utilizing different topologies have been widely developed for various applications. Nowadays, EDM process has been given a significant amount of research focus in manufacturing micro components with new low power topologies being utilized. Recently, a demand in micro machining has also extended into biomedical applications. In this paper a current mode flyback converter is implemented for micro machining biomedical component. A MATLAB/SIMULINK modeling technique of flyback converter is presented and the effectiveness of the flyback converter topology is evaluated through the simulation results obtained by varying the value of primary inductance
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46

Zhang, Jin Jian, Xian Song Fu, Ping Juan Niu, and Yi Li Liu. "A Novel Single-Ended Flyback High Frequency Regulated LED Driver Power Supply." Advanced Materials Research 542-543 (June 2012): 997–1000. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.997.

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A steady output single-ended flyback switching power supply using L6561 current mode PWM controller designed in this paper. The designed circuit consists of single-ended flyback topology and based on the peak current PWM technology. The circuit has input voltage range from 85V AC to 265V AC and about output drive capability of 12V/2A. Based on the specific chip L6561, the novel single-ended flyback AC/DC converting circuit is adapted for mobile or office equipment, off-line battery chargers. The low-power Switched-Mode Power Supply (SMPS) are the most noticeable examples of application that this configuration can fit. The testing results show that the design of this method can reduce the switching power supply ripple, and ensure stable voltage output.
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47

BAGLIO, SALVATORE, LUIGI FORTUNA, GABRIELE MANGANARO, and ROSARIO CRISTAUDO. "COMPLEXITY IN AN INDUSTRIAL FLYBACK CONVERTER." Journal of Circuits, Systems and Computers 05, no. 04 (1995): 627–33. http://dx.doi.org/10.1142/s0218126695000382.

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In this letter a functional model of an industrial flyback converter is introduced. Its accuracy within a defined condition range is shown. The complexity of the system is discussed by using experimental data. Moreover, it is shown that the complex dynamics of a flyback converter can be clusterized in some classes of well-known paradigms appearing in some defined canonical circuits.
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48

Tseng, Sheng-Yu, Jun-Hao Fan, and Hong-Kai Huang. "Hybrid Converter with Multiple Sources for Lithium Battery Charger Applications." Electronics 11, no. 4 (2022): 616. http://dx.doi.org/10.3390/electronics11040616.

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This paper proposes a hybrid converter with multiple sources for lithium battery charger applications. Since the output voltage of a lithium battery charger is very low, its charger needs a higher step-down voltage for a utility line source or a step-down voltage for PV arrays. In order to implement the battery charger with utility line and PV arrays sources to simultaneously supply power to battery, a flyback converter is selected for utility line sources, and a buck converter is adopted for PV arrays source. Due to leakage inductor of transformer in flyback converter, an active clamp circuit is introduced into flyback converter to recover the energy stored in leakage inductor. In addition, flyback and buck converters can adopt switch integration techniques to simplify circuit structure. With this approach, the proposed hybrid converter has less components, is lighter weight and has smaller size and higher conversion efficiency. Finally, a prototype of the proposed hybrid converter with output voltage of 5 V~8.4 V and output maximum current of 12 A has been implement to verify its feasibility. It is suitable for the lithium battery charger applications.
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49

Nacar, Salih. "POLİNOM REGRESYON KONTROLLÜ GERİLİM KİPLİ FLYBACK DÖNÜŞTÜRÜCÜ." Uludağ University Journal of The Faculty of Engineering 30, no. 1 (2025): 245–60. https://doi.org/10.17482/uumfd.1587544.

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Flyback dönüştürücü düşük güçlü endüstriyel uygulamalar için en çok tercih edilen dönüştürücü yapılarından biridir. Bu dönüştürücünün çalışma parametrelerinden giriş gerilimi ve yükü değişebilmekte bu da dönüştürücünün güç kontrolünü önemli bir hale getirmektedir. Flyback dönüştürücünün kontrolünde birçok farklı kontrol tekniği kullanılmaktadır. Bu tekniklerin yapıları basit veya karmaşık, uygulamaları kolay veya zor olabilmektedir. Ayrıca bu teknikler; doğrusal, doğrusal olmayan ve değişen çalışma parametrelerine sahip sistemler için uygun olup olmamalarına göre avantaj ve dezavantaja sahiptirler. Bu çalışmada doğrusal bir yapıya sahip olmayan ve çalışma parametrelerinden giriş gerilimi ve yükü dinamik olarak değişen gerilim kipli flyback dönüştürücünün güç kontrolü için makine öğrenme temelli polinom regresyon tekniği önerilmiştir. Önerilen tekniğin uygulanmasında gerekli olan ve hataya karşı anahtarlama frekansındaki değişimi gösteren kontrol eğrisi 48V referans değeri için elde edilmiştir. Eğri; bağımsız değişkeni hata ve bağımlı değişkeni anahtarlama frekansındaki değişim olan 3. dereceden bir polinom olarak modellenmiştir. Elde edilen polinom PSIM ortamında basit C blokları içerisinde işletilerek çıkış gücü 154W olan dönüştürücünün kapalı çevrimli güç kontrolü için kullanılmıştır. Simülasyon çalışmaları sonucunda polinom regresyon kontrollü flyback dönüştürücünün çıkış geriliminin değişen giriş gerilimine ve yüke karşı referans gerilimini kararlı bir şekilde takip ettiği gözlemlenmiştir. Ayrıca tüm çalışma durumlarında güç anahtarı sıfır gerilim şartlarında iletime geçmektedir.
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Cardoso, Vanderlei, Sergio Luis Brockveld Junior, Telles B. Lazzarin, and Gierri Waltrich. "Double boost‐flyback converter." IET Power Electronics 13, no. 6 (2020): 1163–71. http://dx.doi.org/10.1049/iet-pel.2019.1073.

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