A Full-Bridge DC&amp;#x2013;DC Converter WithZero-Voltage-Switching Overthe Entire Conversion Range

Borage, Mangesh; Tiwari, Sudeep; Bhardwaj, Shubhendu; Kotaiah, S.

doi:10.1109/tpel.2008.925203

Cited by 113 publications

(39 citation statements)

References 13 publications

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“…As shown in Fig. 6(b), the ZVS conditions for the leading leg switches of FB2 circuit can be expressed as ( ) (13) As indicated in (13), the minimum output inductor current (i Lo2,ZVS ) to guarantee ZVS of the leading leg switches is given by In order to ensure ZVS, the dead time t d, leading , should be adjusted to allow the output capacitors of S 5 and S 6 to fully charge and discharge, and it can be derived as given below based on (8) …”

Section: Soft-switching Conditions For the Active Switchesmentioning

confidence: 99%

“…However, having a large series inductance reduces the effective duty ratio and limits the power transfer capability of the converter. Moreover, some other problems are brought in, such as high voltage spikes on the secondary-side rectifiers, excessive primary circulating current [10][11][12][13][14][15], etc. Therefore, several methods [16][17][18][19][20][21][22] have been proposed to solve these problems with the conventional PSFB converters.…”

Section: Introductionmentioning

confidence: 99%

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Soft-switching dual full-bridge converter with reduced circulating loss and voltage stress of secondary rectifier

Shi¹,

Zhang²

2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

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Abstract. This paper proposes a novel soft-switching dual full-bridge converter with shared lagging leg and dual outputs in series. Resonant clamp circuits are employed across the secondary rectifiers to reduce the voltage overshoots of the secondary rectifiers, as well as extinguish the primary current during the freewheeling interval. Full Zero-Voltage-Switching (ZVS) range of the lagging leg switches can be achieved based on the parallel full-bridge configuration. The dual outputs of the proposed converter are connected in series, and the whole output voltage can be regulated within the desired voltage range by the phase-shift control. Therefore, the proposed converter would be useful for high output voltage and high power applications. Steady state operation and distinctive features of the converter are explained and verified on a 1-kW hardware prototype, and experimental results validate the feasibility and performance of the proposed converter.

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Section: Soft-switching Conditions For the Active Switchesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Soft-switching dual full-bridge converter with reduced circulating loss and voltage stress of secondary rectifier

Shi¹,

Zhang²

2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

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“…Increasing the resonant inductor at primary of transformer is another effective method to make sure ZVS PSFB converter achieve soft-switch over the whole load condition, this method is simple in topology and convenient in application [11]. However, greater resonant inductance will increase the duty loss of the secondary side waves and decrease the efficiency of ZVS PSFB converter [12,13]. In addition, the resonant inductor can be integrated into transformer with integrated magnetic technology [14].…”

Section: Introductionmentioning

confidence: 99%

Calculation of Leakage Inductance of Integrated Magnetic Transformer with Separated Secondary Winding Used in ZVS PSFB Converter

Tian¹,

Zhang²,

Ren³

et al. 2016

Journal of Magnetics

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A novel zero voltage switching (ZVS) phase shift full bridge (PSFB) converter used in geophysical exploration is proposed in this paper. To extend the ZVS ranges and increase power density of the converter, external inductor acting as leakage inductance is applied and integrated into the integrated magnetic (IM) transformer with separated secondary winding. Moreover, the loss of ZVS PSFB converter is also decreased. Besides, the analysis and accurate prediction methodology of the leakage inductance of the IM transformer are proposed, which are based on magnetic energy and Lebedev. Finally, to verify the accuracy of analysis and methodology, the experimental and finite element analysis (FEA) results of IM transformer and 40 kW converter prototypes are given.

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“…Therefore, many methods of overcoming these drawbacks have been proposed [6][7][8][9][10][11]. In one such method, passive auxiliary circuits of parallel type are connected to both legs of the conventional full-bridge converter to achieve the ZVS of the primary switches over the entire load range [6].…”

Section: Introductionmentioning

confidence: 99%

Simple High Efficiency Full-Bridge DC-DC Converter using a Series Resonant Capacitor

Jeong¹,

Kwon²,

Park³

2016

Journal of Electrical Engineering and Technology

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-This paper presents a simple high efficiency full-bridge DC-DC converter using a series resonant capacitor. The proposed converter achieves the zero voltage switching of the primary switches under a wide range of load conditions and reduces the high circulating current in the freewheeling mode using the leakage resonant inductance and the series resonant capacitor. Thus, the proposed converter overcomes the drawbacks of the conventional full-bridge DC-DC converter and improves its overall system efficiency. Its structure is simplified by using the leakage inductance of the transformer as the resonant inductance and omitting the DC output filter inductance. Also it can operate over a wide range of input voltages. In this paper, the operational principle, analysis and design example are described in detail. Finally, the experimental results from a 650W (24V/27A) prototype are demonstrated to confirm the operation, validity and features of the proposed converter.

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A Full-Bridge DC–DC Converter WithZero-Voltage-Switching Overthe Entire Conversion Range

Cited by 113 publications

References 13 publications

Soft-switching dual full-bridge converter with reduced circulating loss and voltage stress of secondary rectifier

Soft-switching dual full-bridge converter with reduced circulating loss and voltage stress of secondary rectifier

Calculation of Leakage Inductance of Integrated Magnetic Transformer with Separated Secondary Winding Used in ZVS PSFB Converter

Simple High Efficiency Full-Bridge DC-DC Converter using a Series Resonant Capacitor

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