A novel soft-switching full-bridge DC/DC converter: analysis, design considerations, and experimental results at 1.5 kW, 100 kHz

Redl, R.; Sokal, Nathan O.; Balogh, László

doi:10.1109/63.85909

Cited by 342 publications

(86 citation statements)

References 7 publications

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“…It is well known that the primary current is significantly affected by the transformer turns ratio n [1]. Since the oscillation amplitude is positively correlated with the peak current of the primary side, the transformer ratio should be designed while carefully considering the primary RMS current and the duty cycle loss [24].…”

Section: Design Guidelinesmentioning

confidence: 99%

“…The phase-shifted full-bridge (PSFB) converter is applied in medium to high power conversions due to its attractive features including a simple circuit, constant operation frequency and ZVS-on of the primary switches [1]- [5]. This type of converter has been extensively studied in the literature, including modeling, design optimization, control method, flux bias compensation, improved full-bridge topologies, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Fig. 1(a) and (b) show a circuit diagram [1], [18] and key waveforms [18], [19] of the standard PSFB converter. According to Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Impact of Parasitic Elements on Spurious Turn-On in Phase-Shifted Full-Bridge Converters

Wang¹

2016

Journal of Power Electronics

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This paper presents a comprehensive analysis of the spurious turn-on phenomena in phase-shifted full-bridge (PSFB) converters. The conventional analysis of the spurious turn-on phenomenon does not establish in the PSFB converter as realizing zero voltage switching (ZVS). Firstly, a circuit model is proposed taking into account the parasitic capacitors and inductors of the transistors, as well as the parasitic elements of the power circuit loop. Second, an exhaustive investigation into the impact of all these parasitic elements on the spurious turn-on is conducted. It has been found that the spurious turn-on phenomenon is mainly attributed to the parasitic inductors of the power circuit loop, while the parasitic inductors of the transistors have a weak impact on this phenomenon. In addition, the operation principle of the PSFB converter makes the leading and lagging legs have distinguished differences with respect to the spurious turn-on problems. Design guidelines are given based on the theoretical analysis. Finally, detailed simulation and experimental results obtained with a 1.5 kW PSFB converter are given to validate proposed analysis.

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Section: Design Guidelinesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Impact of Parasitic Elements on Spurious Turn-On in Phase-Shifted Full-Bridge Converters

Wang¹

2016

Journal of Power Electronics

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“…LDC is designed as an isolated topology. EMI filter structure is simple because LDC performs DC-to-DC power conversion, and fullbridge types are mainly used to meet high efficiency performance requirements [1][2][3][4]. The general characteristics of LDCs are as follows: 1) It requires more than 90 % of high efficiencies in most operation section; 2) The input and the output voltages are variable.…”

Section: Introductionmentioning

confidence: 99%

Advanced LDC Test Bed Using Energy Recovery Technique for HEVs

Kim¹,

Jung²,

Lee³

2013

Journal of Electrical Engineering and Technology

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-This paper reports the development of test bed with the energy recovering technique using two-step boost converter. The device is utilized for LDC aging test of Hyundai Motor's LPI AVANTE HEV in mass production. The developed power recycle type test bed is designed as 1.5 kW class to test up to the maximum load power of LDC and is also designed to supply scant power supply up to 500 W after power recycle. The theoretical design analysis and operational characteristics analysis results of test bed are reported, and its practicality and reliability are verified through the test result. Also, the finally developed test bed confirms approximately 79~85 % energy saving effect compared to the usual traditional aging test system.

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“…In recent years, the conventional phase-shift full-bridge (PSFB) converters have been widely employed in high-power applications [1][2][3][4][5] because of their advantages of high conversion efficiency, high power density, and low electromagnetic interference (EMI). All primary switches can be turned on under ZVS using the transformer leakage inductance and switch intrinsic capacitance without any external passive components [6][7][8][9].…”

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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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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A novel soft-switching full-bridge DC/DC converter: analysis, design considerations, and experimental results at 1.5 kW, 100 kHz

Cited by 342 publications

References 7 publications

The Impact of Parasitic Elements on Spurious Turn-On in Phase-Shifted Full-Bridge Converters

The Impact of Parasitic Elements on Spurious Turn-On in Phase-Shifted Full-Bridge Converters

Advanced LDC Test Bed Using Energy Recovery Technique for HEVs

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

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