High power high frequency zero current transition full bridge DC/DC converter

Wu, Xinke; Xu, Dingbang; Kong, Jiayi; Yang, Cheng-Hsiung; Qian, Zhaoming

doi:10.1109/apec.1998.653993

Cited by 16 publications

(5 citation statements)

References 5 publications

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“…The experimental time-domain steady-state voltage and current waveforms of the primary switches 1 S , 4 S , and 2 a S at full load are given in Fig11. It proves the ZCS of the main switches and ZVS of the auxiliary switches .…”

Section: Prototype and Experimental Resultsmentioning

confidence: 99%

“…According to (1), the required value of V x is maximum when I in is maximum min , Fig. 5 shows the value of V x versus the output load current with the parameters given in Table I.…”

Section: Self-adaptable Voltage For C Rmentioning

confidence: 99%

“…However, as the operation is symmetrical in every one half of the switching cycle, only the operation from t 0 to t 6 is described 1. Mode 0 [Before 0 t ] Before t 0 , the energy is transferred from the input to the output via 1 L , 1 S , 4 S , r T , B D and C D . r C is charged at the minimum necessary voltage x V for assuring the main switches switch at zero current, It will be shown later that the value of x V is chosen to satisfy the following criterion 3 S is turned on with ZCS.…”

Section: Zcs Fb Convertermentioning

confidence: 99%

“…According to (1), V x is calculated for each measured value of the input current, such that to ensure ZCS for all the specified range of input/load currents. At a low input/load current, less resonant energy is needed.…”

Section: Adaptive Character Of the Zcs-assisted Resonant Energymentioning

confidence: 99%

“…For such switches, ZCS is preferable, for dealing with the tail current at turn-off. Although a few ZCS switching schemes have been proposed [1][2][3][4][5][6][7][8][9], they present different drawbacks, such as large current and/or voltage over-stresses due to resonant peaks, or use of much resonant energy even when it is not necessary .…”

Section: Introductionmentioning

confidence: 99%

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Analysis, optimized design and adaptive control of a ZCS full-bridge converter without voltage over-stress on the switches

Zhang

Chung

Ruan

et al. 2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents the analysis and design of a new current-driven soft-switched full-bridge converter, in which all main switches are zero-current-switched (ZCS), and the switches in a switched-capacitor snubber are zero-voltage-switched (ZVS). For each value of the supply and load, the snubber capacitor is adaptively charged at the minimum necessary value for assuring soft-switching; thus, less resonant energy is circulated. There is no extra voltage stress on the switches. The current through the switches is limited to the input current. A dc analysis led to the derivation of the voltage conversion ratio. The resonant elements of the snubber circuit are optimally designed by trading-off the soft-switching range the duty-cycle loss over a wide supply and load variation. The calculation of the ac small-signal transfer functions allowed for the design of the controller, which was implemented by DSP. A 530V/15kV, 5kW prototype has been built and evaluated.

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Section: Prototype and Experimental Resultsmentioning

confidence: 99%

“…According to (1), the required value of V x is maximum when I in is maximum min , Fig. 5 shows the value of V x versus the output load current with the parameters given in Table I.…”

Section: Self-adaptable Voltage For C Rmentioning

confidence: 99%

Section: Zcs Fb Convertermentioning

confidence: 99%

Section: Adaptive Character Of the Zcs-assisted Resonant Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis, optimized design and adaptive control of a ZCS full-bridge converter without voltage over-stress on the switches

Zhang

Chung

Ruan

et al. 2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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High power high frequency half-wave-mode ZCT-PWM full bridge DC/DC converter

Wu²,

Zhang³

et al.

APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058)

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A novel ZCT-PWM type full bridge DC/DC Converter is proposed. This circuit realizes the ZCS of the main switches and the auxiliary switch, while achieving the soff recovery of the secondary side diodes. In the full range of loads, it can be operated in the constant frequency softswitching mode. A 5KW IOOKHz IGBT type SMPS module has achieved efficiency as high as 96%.simulation results and its experiment results in a 5KW loOKHz SMPS module. n. CONCEPT OF FW-ZCS-PWM and HW-ZCS-PWMAccording to the graph theory and electric network theory, a basis power conversion unit (BCU) can be abstracted from a power electronics converter[g1, and shown in Figl.

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A novel zero-current-transition full bridge DC-DC converter

Zhang

Xie

et al.

Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005.

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Abstruct-This paper proposes a novel zer-urrent-transition (ZCT) PWM full bridge DC/DC converter. The proposed converter not only achieves ZCS for the main switches and auxiliary switch in the entire load ranges but also realizes soft commutation for the output rectifier diodes. Furthermore, the auxiliary circuit also helps softly turn on the main switches, Simulation results and experimental results verify the theoretical analysis.

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High power high frequency zero current transition full bridge DC/DC converter

Cited by 16 publications

References 5 publications

Analysis, optimized design and adaptive control of a ZCS full-bridge converter without voltage over-stress on the switches

Analysis, optimized design and adaptive control of a ZCS full-bridge converter without voltage over-stress on the switches

High power high frequency half-wave-mode ZCT-PWM full bridge DC/DC converter

A novel zero-current-transition full bridge DC-DC converter

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