Academic literature on the topic 'Zero-voltage-switching phase-shift-modulated DC-DC full-bridge converter'

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Journal articles on the topic "Zero-voltage-switching phase-shift-modulated DC-DC full-bridge converter"

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Lin, Bor-Ren, and Yi-Kuan Lin. "Hybrid DC-DC Converter with Low Switching Loss, Low Primary Current and Wide Voltage Operation." Energies 14, no. 9 (April 28, 2021): 2536. http://dx.doi.org/10.3390/en14092536.

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A full-bridge converter with an additional resonant circuit and variable secondary turns is presented and achieved to have soft-switching operation on active devices, wide voltage input operation and low freewheeling current loss. The resonant tank is linked to the lagging-leg of the full bridge pulse-width modulation converter to realize zero-voltage switching (ZVS) characteristic on the power switches. Therefore, the wide ZVS operation can be accomplished in the presented circuit over the whole input voltage range and output load. To overcome the wide voltage variation on renewable energy applications such as DC wind power and solar power conversion, two winding sets are used on the output-side of the proposed converter to obtain the different voltage gains. Therefore, the wide voltage input from 90 to 450 V (Vin,max = 5Vin,min) is implemented in the presented circuit. To further improve the freewheeling current loss issue in the conventional phase-shift pulse-width modulation converter, an auxiliary DC voltage generated from the resonant circuit is adopted to reduce this freewheeling current loss. Compared to the multi-stage DC converters with wide input voltage range operation, the proposed circuit has a low freewheeling current loss, low switching loss and a simple control algorithm. The studied circuit is tested and the experimental results are demonstrated to testify the performance of the resented circuit.
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Lin, Bor-Ren, and Guan-Yi Wu. "Hybrid DC Converter with Current Sharing and Low Freewheeling Current Loss." Energies 13, no. 24 (December 15, 2020): 6631. http://dx.doi.org/10.3390/en13246631.

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A new hybrid high-frequency link pulse-width modulation (PWM) converter using voltage balance capacitor and current balance magnetic coupling is proposed to realize low freewheeling current loss and wide load range of soft switching operation. Series-connected H-bridge converter is adopted for high voltage applications. In addition, a voltage balance capacitor and a current balance magnetic coupling core are employed for achieving voltage and current balance. To extend zero-voltage switching (ZVS) range of switches at lagging-leg of phase-shift PWM converter, soft switching LLC converter is linked to the lagging-leg of phase-shift PWM converter. Therefore, the wide ZVS load operation is realized in the presented hybrid converter. The other high freewheeling current disadvantage in conventional phase-shift PWM converter is improved by a snubber circuit used on low-voltage side. Thus, the primary current during the freewheeling state is decreased and close to zero. In addition, the conduction losses on primary-side components of studied converter are reduced. The secondary-sides of phase-shift PWM converter and LLC resonant converter are series-connected to achieve power transfer between input and output sides. Experimental results using a laboratory prototype are provided to demonstrate the effectiveness of the studied circuit and control algorithm.
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Lin, Bor-Ren. "Analysis and Implementation of a Phase-Shift Pulse-Width Modulation Converter with Auxiliary Winding Turns." Energies 13, no. 1 (January 2, 2020): 222. http://dx.doi.org/10.3390/en13010222.

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A phase-shift pulse-width modulation converter is studied and investigated for railway vehicle or solar cell power converter applications with wide voltage operation. For railway vehicle applications, input voltage range of dc converters is requested to have 30–40% voltage variation of the nominal input voltage. The nominal input voltages of dc converters on railway vehicles applications may be 37.5 V, 48 V, 72 V, 96 V and 110 V. Therefore, a new dc converter with wide input voltage operation from 25 to 150 V is presented to withstand different nominal input voltage levels such as 37.5–110 V on railway power units. To realize wide input voltage operation, an auxiliary switch and auxiliary transformer windings are used on output side of conventional full-bridge converter to have different voltage gains under different input voltage values. Phase-shift pulse-width modulation is adopted in the developed dc converter to accomplish soft switching operation on power switches. To confirm and validate the practicability of the presented converter, experiments based on a 300 W prototype were provided in this paper.
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Sayed, Khairy, Ziad M. Ali, and Mujahed Aldhaifallah. "Phase-Shift PWM-Controlled DC–DC Converter with Secondary-Side Current Doubler Rectifier for On-Board Charger Application." Energies 13, no. 9 (May 6, 2020): 2298. http://dx.doi.org/10.3390/en13092298.

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A novel circuit topology for an on-board battery charger for plugged-in electric vehicles (PEVs) is presented in this paper. The proposed on-board battery charger is composed of three H-bridges on the primary side, a high-frequency transformer (HFT), and a current doubler circuit on the secondary side of the HFT. As part of an electric vehicle (EV) on-board charger, it is required to have a highly compact and efficient, lightweight, and isolated direct current (DC)–DC converter to enable battery charging through voltage/current regulation. In this work, performance characteristics of full-bridge phase-shift topology are analyzed and compared for EV charging applications. The current doubler with synchronous rectification topology is chosen due to its wider-range soft-switching availability over the full load range, and potential for a smaller and more compact size. The design employs a phase-shift full-bridge topology in the primary power stage. The current doubler with synchronous recitation is placed on the secondary. Over 92% of efficiency is achieved on the isolated charger. Design considerations for optimized zero-voltage transition are disused.
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Cheng, Hung Liang, Chun An Cheng, Chao Shun Chen, and Kuan Lung Huang. "Design and Implementation of a Dimmable LED Driver with Low-Frequency PWM Control." Applied Mechanics and Materials 284-287 (January 2013): 2538–42. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2538.

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This paper proposes a high-efficiency dimmable LED driver for light emitting diodes (LED). The developed LED driver consists of a full-bridge resonant converter and six buck converters. The function of the full-bridge resonant converter is to obtain a smooth dc-link voltage for the buck converters by phase-shift modulation (PSM) while that of the six buck converters is to drive six LED modules, respectively. The gate voltage of the active switch of each buck converter is a combination of high-frequency and low-frequency pulses. The duty ratio of the high-frequency pulse controls the LED voltage and thereby, controls the amplitude of LED current. LEDs are dimmed by low-frequency pulse-width modulation (PWM) to vary the average current flowing through LED. Circuit equations are derived and circuit parameters are designed. High circuit efficiency is ensured by operating the active switches at zero-voltage switching-on to reduce the switching loss. Finally, a prototype circuit was built to verify the accuracy and feasibility of the proposed LED driver.
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Tsai, Cheng-Tao, and Sin-Hua Chen. "PV Power-Generation System with a Phase-Shift PWM Technique for High Step-Up Voltage Applications." International Journal of Photoenergy 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/838231.

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A PV power-generation system with a phase-shift pulse-width modulation (PWM) technique for high step-up voltage applications is proposed. The proposed power-generation system consists of two stages. In the input stage, all power switches of the full-bridge converter with phase-shift technique can be operated with zero-current switching (ZCS) at turn-on or turn-off transition. Hence, the switching losses of the power switches can be reduced. Then, in the DC output stage, a voltage-doubler circuit is used to boost a high dc-link bus voltage. To supply a utility power, a dc/ac inverter is connected to induce a sinusoidal source. In order to draw a maximum power from PV arrays source, a microcontroller is incorporated with the perturbation and observation method to implement maximum power point tracking (MPPT) algorithm and power regulating scheme. In this study, a full load power of 300 W prototype has been built. Experimental results are presented to verify the performance and feasibility of the proposed PV power-generation system.
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Gao, Chuan, Guang Lei Jin, Ri Chen Jiang, Mu Rong Li, Masashi Ochiai, Shinji Aso, Yasunori Kobori, and Haruo Kobayashi. "A Method to Improve Switching Power Supply Efficiency at Light Load with DSP Control." Key Engineering Materials 698 (July 2016): 133–41. http://dx.doi.org/10.4028/www.scientific.net/kem.698.133.

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This paper discusses a digital control method for efficiency improvement of switching power circuit at light load by using C2000 Series DSP (Texas Instruments Inc.). In this work, we alter the module in DSP to adjust the link voltage between a bridgeless PFC AC/DC converter and a phase shift full bridge DC/DC converter, as well as to control the PWM frequency of power circuit in order to improve the power efficiency in a suitable way. Our experiments result show that the efficiency of the power circuit at half or light load improves by adjusting the link voltage and/or PWM frequency
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Kannan, G. "A High Frequency Converter for EV Application." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 1 (January 1, 2018): 5. http://dx.doi.org/10.11591/ijeecs.v9.i1.pp5-11.

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<p>An electrical vehicle (EV) is advancing as alternative power trains for green transportation. the DC–DC converter for auxiliary power supply of electric loads .In this paper presented a new topologyof high frequency converter for electric vehicle was proposed,This converter has to be capable of handling the energy transfer from the 28V DC bus and the 550 high voltage DC bus (used for the electric traction). The control strategy is phase shift of the full bridge converter. Using this topology we reduce the switching losses. Conventional converter at two levels of voltage by only one full bridge converter using two planar transformers in high frequency the primary are coupled in parallel and the secondary are in series. We minimized the size and the weight of the converter. The high frequency converter advantages in terms of cost, efficiency, flexibility, and increased due to the possibility of easy synchronous rectification implementation.<strong><em></em></strong></p>
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Lu, Ming, and Xiaodong Li. "Performance Evaluation of a Semi-Dual-Active-Bridge with PPWM Plus SPS Control." Electronics 7, no. 9 (September 9, 2018): 184. http://dx.doi.org/10.3390/electronics7090184.

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In this paper, a semi-dual-active-bridge (S-DAB) DC/DC converter with primary pulse-width modulation plus secondary phase-shifted (PPWM + SPS) control for boost conversion is analyzed in detail. Under the new control scheme, all effective operation modes are identified at first. Then, the working principle, switching behaviour, and operation range in each mode are discussed. Compared with conventional secondary phase-shifted control, PPWM + SPS control with two controllable phase-shift angles can extend the zero-voltage switching (ZVS) range and enhance control flexibility. In addition, an effective control route is also given that can make the converter achieve at the global minimum root-mean-square (RMS) current across the whole power range and avoid the voltage ringing on the transformer secondary-side at a light load. Finally, a 200 W prototype circuit is built and tested to verify correctness and effectiveness of theoretical results.
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Okilly, Ahmed H., Namhun Kim, and Jeihoon Baek. "Inrush Current Control of High Power Density DC–DC Converter." Energies 13, no. 17 (August 19, 2020): 4301. http://dx.doi.org/10.3390/en13174301.

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This paper presents a complete mathematical design of the main components of 2 kW, 54 direct current (DC)–DC converter stage, which can be used as the second stage of the two stages of alternating current (AC)–DC telecom power supply. In this paper, a simple inrush current controlling circuit to eliminate the high inrush current, which is generated due to high input capacitor at the input side of the DC–DC converter, is proposed, designed, and briefly discussed. The proposed circuit is very easy to implement in the lab using a single metal–oxide–semiconductor field-effect transistor (MOSFET) switch and some small passive elements. PSIM simulation has been used to test the power supply performance using the value of the designed components. Furthermore, the experimental setup of the designed power supply with inrush current control is built in the lab to show the practical performance of the designed power supply and to test the reliability of the proposed inrush current mitigation circuit to eliminate the high inrush current at initial power application to the power supply circuit. DC–DC power supply with phase shift zero voltage switching (ZVS) technique is chosen and designed due to its availability to achieve ZVS over the full load range at the primary side of the power supply, which reduces switching losses and offers high conversion efficiency. High power density DC–DC converter stage with smooth current startup operation, full load efficiency over 95%, and better voltage regulation is achieved in this work.
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Dissertations / Theses on the topic "Zero-voltage-switching phase-shift-modulated DC-DC full-bridge converter"

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Cliffe, Robert J. "High power high frequency DC-DC converter topologies for use in off-line power supplies." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/7305.

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The development of a DC-DC converter for use in a proposed range of one to ten kilowatt off-line power supplies is presented. The converter makes good use of established design practices and recent technical advances. The thesis begins with a review of traditional design practices, which are used in the design of a 3kW, 48V output DC-DC converter, as a bench-mark for evaluation of recent technical advances. Advances evaluated include new converter circuits, control techniques, components, and magnetic component designs. Converter circuits using zero voltage switching (ZVS) transitions offer significant advantages for this application. Of the published converters which have ZVS transitions the phase shift controlled full bridge converter is the most suitable, and assessments of variations on this circuit are presented. During the course of the research it was realised that the ZVS range of one leg of the phase shift controlled full bridge converter could be extended by altering the switching pattern, and this new switching pattern is proposed. A detailed analysis of phase shift controlled full bridge converter operation uncovers a number of operational findings which give a better and more complete understanding of converter operation than hitherto published. Converter design equations and guidelines are presented and the effects of the new improvement are investigated by an approximate analysis. Computer simulations using PSPICE2 are carried out to predict converter performance. A prototype converter design, construction details and test results are given. The results obtained compare well to the predicted performance and confirm the advantages of the new switching pattern.
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Zanatta, Cleber. "Análise teórica e experimental do comportamento de grandes e pequenos sinais e desenvolvimento de um novo modelo dinâmico de pequenos sinais do conversor ZVS-PSM-FB." Universidade Federal de Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/8436.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This Master Thesis presents the development of a new dynamic model for the DC-DC Zero-Voltage-Switching Phase-Shift-Modulated Full-Bridge (ZVS-PSM-FB).At first, the ZVSPSM-FB converter is analyzed and the Steady-State equations are derived. Then, using the ac equivalent circuit modeling technique, it is derived two new ZVS-PSM-FB dynamical models, based on step operation of the converter and steady-state converter equations. These two new ZVS-PSM-FB dynamical models with two dynamical models previously presented in the literature are used to perform a frequency response and a transfer-function DC-gain comparison to verify the performance of the dynamical models. Comparison results shows that our second model here derived presents a better performance among other models, keeping the desirable characteristics as simple polynomial ratio transfer-functions, excellent theoretical accuracy of transfer-functions DC-gains, transfer-functions coefficients independency of circuit parasitics components, excepting the primary leakage inductance. Even in this work, it is shown frequency response experimental results of the ZVS-PSM-FB converter, designed following telecommunications rectifiers power supplies standards.
Esta Dissertação de Mestrado apresenta o desenvolvimento de um novo modelo dinâmico para o conversor CC-CC Ponte-Completa Modulado por Deslocamento de Fase e com Comutação em Zero de Tensão (ZVS-PSM-FB). Inicialmente, o conversor ZVS-PSM-FB é analisado, onde são derivadas as equações que definem a operação em regime-permanente do conversor. A seguir, utilizando-se da técnica de modelagem ca média de conversores estáticos, deriva-se dois novos modelos dinâmicos para o conversor, tendo por base as etapas de operação do conversor e as equações de regime-permanente. Feito isso, os dois modelos aqui derivados, são comparados com outros dois modelos dinâmicos já apresentados na literatura para verificar seus desempenhos quanto à resposta em freqüência e resposta do ganho-cc das funções de transferências à variações de carga do conversor, dos modelos dinâmicos. Resultados desta comparação mostram que o segundo modelo aqui derivado é o que apresenta melhor desempenho entre os modelos comparados, mantendo características desejáveis de simples formato de função de transferência como razão de polinômios, precisão teórica excelente para resposta de ganho-cc das funções de transferências e não-dependência dos coeficientes das funções de transferências de parâmetros parasitas do circuito, a menos da indutância de dispersão do transformador. Ainda neste trabalho, são mostrados resultados experimentais da resposta em freqüência do conversor ZVS-PSM-FB, projetado com especificações de normas para retificadores chaveados de alta-freqüência para equipamentos de telecomunicações.
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Uslu, Mutlu. "Analysis, Design, And Implementation Of A 5 Kw Zero Voltage Switching Phase-shifted Full-bridge Dc/dc Converter Based Power Supply For Arc Welding Machines." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607873/index.pdf.

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Modern arc welding machines utilize controllable high frequency DC/DC power supply with high dynamic and steady state current regulation performance. In the design robustness, small size and low weight, low complexity, and high efficiency are the defining criteria. The most suitable approach for a 5 kW arc welding machine power supply application is the high frequency Full-Bridge Phase-Shifted Zero Voltage Switching (FB-PS-ZVS) DC/DC converter with an isolation transformer. This converter not only gives the advantage of zero voltage switching for a wide load current range, it also provides reduced Electromagnetic Interference (EMI) and reduced component stress compared to standard PWM converters. In this thesis a FB-PS-ZVS DC/DC converter with 5 kW power rating is designed for modern arc welding machine applications. IGBTs are utilized at 50 kHz switching frequency for high efficiency and control bandwidth. The output current of the DC/DC converter is controlled via a Digital Signal Processor (DSP) control platform. The performance of the designed DC/DC converter is evaluated via the computer simulations and the experimental study of the constructed prototype.
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Kaya, Mehmet Can. "Design, Implementation, And Control Of A Two&amp." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610106/index.pdf.

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In this thesis a two-stage AC/DC/DC power converter is designed and implemented. The AC/DC input stage of the converter consists of the two&
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phase interleaved boost topology employing the average current mode control principle. The output stage consists of a zero voltage switching phase shifted full bridge (ZVS&
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PS&
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FB) DC/DC converter. For the input stage, main design goals are obtaining high input power factor, low input current distortion, and well regulated output dc voltage, and obtaining these attributes in a power converter with high power density. For the input stage, the interleaved structure has been chosen in order to obtain reduced line current ripple and EMI, reduced power component stresses, and improved power density. The control of the pre&
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regulator is provided by utilizing a new commercial monolithic integrated circuit, which provides interleaved continuous conduction mode power factor correction (PFC). The output stage is formed by utilizing the available prototype hardware of a ZVS&
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PS&
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FB DC/DC converter and mainly the system integration and controller design and implementation studies have been conducted. The converter small signal model is derived and utilizing its transfer function and employing voltage loop control, the output voltage regulator has been designed. The output voltage controller is implemented utilizing a digital signal processor (DSP). Integrating the AC/DC preregulator and DC/DC converter, a laboratory AC/DC/DC converter system with high overall performance has been obtained. The overall system performance has been verified via computer simulations and experimental results obtained from laboratory prototype.
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Su, Hsuan-Yi, and 蘇軒毅. "Design and Implementation of Phase-Shift Full-Bridge DC/DC Converter with Zero Voltage Switching." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/k7rryj.

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碩士
國立臺北科技大學
機電整合研究所
96
The objective of this thesis is to design and implement a phase shift full bridge converter with zero voltage switching. The implemented converter achieves zero voltage transition with a resonant inductor to reduce the switching loss. Moreover, the switching stress and circulating loss are reduced by using the clamping diodes; therefore the overall efficiency is improved. Also the effects of the transformer and resonant inductor are discussed in the thesis. Furthermore, the converter is combined with an AC/DC converter with power factor corrector to achieve universal input voltage. The specifications of converter are as follows: input voltage equal to DC 400 V, output equal to 48 V/16.62 A (800 W), static load regulation equal to DC 48 V ± 3 % (@Imin = 1 A), dynamic load regulation equal to DC 48 V ± 3 % (@Io = 5 ~ 13.34 A, Io = 8.34 ~ 16.62 A), slew rate equal to 0.5 A/μS, converter efficiency equal to 90% @ 160W; 91% @ 400 W; 92% @ 600 W; 93% @ 800 W. Experimental results show that the power device can achieve zero voltage turn-on, for the specified input voltage and load conditions. The output voltage is well regulated and varied between 47.5 V and 49.26 V. Moreover, the efficiency for single stage and two stage is 90 % and 80 %, respectively. The results confirm that the designed and implemented converter meets the standard of Energy Star.
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Conference papers on the topic "Zero-voltage-switching phase-shift-modulated DC-DC full-bridge converter"

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Zanatta, Cleber, and Jose Renes Pinheiro. "A No DC-Gain Error Small-Signal Model for the Zero-Voltage-Switching Phase-Shift-Modulated Full-Bridge DC-DC Converter." In IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics. IEEE, 2006. http://dx.doi.org/10.1109/iecon.2006.348128.

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George, Nithin, Vadamalai Natarajan Panchalai, Elizabeth Sebastian, and Sivakumar Narayanan. "Digital voltage-mode-control of a full-bridge phase-shift-modulated DC-DC converter." In 2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD). IEEE, 2014. http://dx.doi.org/10.1109/aicera.2014.6908202.

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Aksoy, Huseyin, and M. Timur Aydemir. "Comparison of zero voltage switching phase-shifted PWM full bridge DC-DC converter topologies." In 2015 Intl Aegean Conference on Electrical Machines & Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Electrical & Electronic Equipment (OPTIM) & 2015 Intl Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION). IEEE, 2015. http://dx.doi.org/10.1109/optim.2015.7427028.

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Toni, F. Danang Wijaya, and Eka Firmansyah. "Full-bridge inverter phase-shifted PWM (FBPS-PWM) zero voltage switching (ZVS) and high frequency transformer as part of DC-DC converter 311/100V 300W." In 2014 International Conference on Electrical Engineering and Computer Science (ICEECS). IEEE, 2014. http://dx.doi.org/10.1109/iceecs.2014.7045266.

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Toni, F. Danang Wijaya, and Eka Firmansyah. "Comparison of two high frequency transformer designs to achieve zero voltage switching in a 311/100 v 1 kW phase-shifted full-bridge DC-DC converter." In 2016 8th International Conference on Information Technology and Electrical Engineering (ICITEE). IEEE, 2016. http://dx.doi.org/10.1109/iciteed.2016.7863280.

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