Efficient Hybrid Dual Full-Bridge DC–DC Converters for Pulsed Output Current Applications

Luo, Jiankun; Zhi-qiang, Guo; Zhan, Wei; Chen, Shujun

doi:10.1109/tie.2023.3234134

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Series-parallel PSFB converters are usually driven in a synchronous interleaved manner and have the common advantages of both conventional PSFB converters and seriesparallel combination converters, making them widely used in areas such as energy storage, renewable power generation, and high-voltage pulse generators [19][20][21]. Also using vertical-double-diffused metal-oxide-semiconductor field-effect transistor power devices on the primary side makes the series-parallel PSFB converter more attractive [22,23].…”

Section: Introductionmentioning

confidence: 99%

Novel Series-Parallel Phase-Shifted Full-Bridge Converters with Auxiliary LC Networks to Achieve Wide Lagging-Leg ZVS Range

Wang,

Sun,

Chen

et al. 2024

Electronics

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Under light load conditions, the phase-shifted full-bridge (PSFB) converter often has difficulty in realizing the zero-voltage switching (ZVS) of the lagging-leg by relying on the energy of its resonant inductor; however, for the series-parallel PSFB converter applied in high-power applications, the lagging-leg still has the problem of difficult realization of ZVS. Based on this, the paper analyzes the reasons why the series-parallel PSFB converter has difficulty in achieving ZVS for the lagging-leg under light and heavy loads. Under interleaved control, the ZVS of the lagging-leg over the full load range is realized by adding an auxiliary LC branch at the midpoint of the lagging-leg of both submodules. Based on the double-bridge input-parallel-output-series (IPOS) PSFB converter, analyzing the working principle of the circuit after adding the auxiliary LC branch and extending it to the series-parallel PSFB converter. The design requirements of the LC auxiliary branch of the dual-bridge series-parallel PSFB converter are given and the effects of the LC auxiliary branch on the module operating state and device stress are analyzed. On this basis, an extension is carried out to give the working principle and design method of the auxiliary LC branch of the N-bridge series-parallel PSFB converter. Finally, a 100 kW Matlab/Simulink simulation model verifies the superior performance of the proposed LC auxiliary branch to realize the lagging-leg ZVS of the series-parallel PSFB converter under light and heavy loads and achieves a 1.09% peak efficiency improvement at rated load.

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Section: Introductionmentioning

confidence: 99%

Novel Series-Parallel Phase-Shifted Full-Bridge Converters with Auxiliary LC Networks to Achieve Wide Lagging-Leg ZVS Range

Wang,

Sun,

Chen

et al. 2024

Electronics

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“…In 2006, reference [18] proposed a new PSFB with a minimum circulating current. Reference [19] focuses on the hard-switching condition and the cycling current. The circuit uses a sharing bridge leg in the primary side and a hybrid rectifier in the secondary side.…”

Section: Introductionmentioning

confidence: 99%

A New Zero-Voltage Zero-Current Switching Converter with Minimum Duty Cycle Loss

Wang,

Shi,

2024

Electronics

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Zero-voltage zero-current switching (ZVZCS) phase-shifted full-bridge (PSFB) converters have been widely used in high-power applications because of their high efficiency, low price, and easy control. Currently, the biggest problem with PSFB converters in operation is their high duty cycle loss. With the increase in current, duty cycle loss grows and degrades their performance. Focusing on this problem, a new ZVZCS PSFB converter is proposed in this paper. This topology adds an auxiliary circuit to minimize duty cycle loss. Moreover, the lagging-leg switches can obtain zero-current switching (ZCS) easily with the help of the circuit. The auxiliary circuit is built of four metal-oxide-semiconductor field-effect transistors (MOSFETs) and an auxiliary transformer, and extra voltage can be added to the primary coils when the direct-current (DC) voltage is small. This paper discusses its operation principles and characteristics, and an experiment of a 2 kW prototype was conducted, the results of which demonstrate the advantages of the presented circuits.

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Full Bridge DC-DC Converter Based Battery Charger with PFC CUK Converter Having Hysteresis Control

Karakaş

Şehirli

2023

2023 5th Global Power, Energy and Communication Conference (GPECOM)

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Efficient Hybrid Dual Full-Bridge DC–DC Converters for Pulsed Output Current Applications

Cited by 3 publications

References 24 publications

Novel Series-Parallel Phase-Shifted Full-Bridge Converters with Auxiliary LC Networks to Achieve Wide Lagging-Leg ZVS Range

Novel Series-Parallel Phase-Shifted Full-Bridge Converters with Auxiliary LC Networks to Achieve Wide Lagging-Leg ZVS Range

A New Zero-Voltage Zero-Current Switching Converter with Minimum Duty Cycle Loss

Full Bridge DC-DC Converter Based Battery Charger with PFC CUK Converter Having Hysteresis Control

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