Research on Topology of the High Step-Up Boost Converter With Coupled Inductor

Chen, Si; Zhou, Luowei; Luo, Quanming; Gao, Wei; Wei, Yuqi; Sun, Pengju; Du, Xiong

doi:10.1109/tpel.2019.2897871

Cited by 63 publications

(22 citation statements)

References 29 publications

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“…In applications where galvanic isolation is not necessary, non-isolated DC/DC converter is preferred. Most of high step-up converters are derived from Boost converter [3][4][5][6][7]. A high step-up converter with two or more boost converter cascaded in series is given in [8], these kinds of converters are called cascaded boost converter or quadratic boost converter, the disadvantages of them are too many components and complex structure, which causes low efficiency.…”

Section: Introductionmentioning

confidence: 99%

High step-up ZVT Converter Based on Active switched Coupled inductors

Tang¹,

Tong

Afzal

et al. 2024

IEEE Access

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To meet the requirements of high voltage boosting and high efficiency, a novel high step-up zero voltage transition (ZVT) DC/DC converter based on active switched-inductor (ASL) is proposed. This converter combines ASL and coupled inductor structure, thus can reduce the voltage and current stress of power switch, and the active clamping technology provides zero voltage transition (ZVT) for all switches. The coupled inductors can realize relatively high voltage gain with appropriate turns ratio while all magnetic components can be integrated in one core. In addition, thanks to the leakage inductance, the reverse recovery problem of diodes is resolved. The working principle of the proposed converter is analyzed in detail, also the characteristics including voltage gain, the condition of ZVT is discussed. Then, a family of derived converters are listed and compared to each other. According to the proposed converter, a 500W prototype with 100kHz switching frequency is established in the lab, and the experimental results are given to verify the analysis. INDEX TERMS High step-up voltage gain; Active switched-coupled inductor; ASL; Coupled inductor; Zero voltage transition This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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Section: Introductionmentioning

confidence: 99%

High step-up ZVT Converter Based on Active switched Coupled inductors

Tang¹,

Tong

Afzal

et al. 2024

IEEE Access

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“…In the no-load condition, the output voltage equals to VM. Therefore, using (1) and 3 . 8 significantly lower than the saturation current Isat, so that charging and discharging of the inductor is efficient (considering core losses, etc).…”

Section: B Rectification Of Repetitive Impulsesmentioning

confidence: 99%

“…LEAN energy resources such as photovoltaic (PV) and fuel cell (FC), exhibit low unregulated output voltage, which requires a dc-dc converter with a high voltage step-up ratio [1]- [6]. Several approaches including inductive switching (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Efficient High Step-Up Operation in Boost Converters Based on Impulse Rectification

Nikoo

Jafari

Perera

et al. 2020

IEEE Trans. Power Electron.

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Conventional boost converters, while having a high level of simplicity and robustness, are known to have a poor efficiency at high step-up regime. More complicated topologies have been extensively explored to increase the step-up ratio while keeping a high-efficiency, however, an efficient regulated dc-dc power conversion at high step-up regime still remains a challenge. In this work we demonstrate fully soft-switched operation of boost converters based on impulse rectification, which results in an efficient power conversion at very high step-up regime. Contrary to the conventional analysis of boost converters which seeks to minimize conduction and switching losses, our approach considers reactive power as the key parameter limiting efficiency. A theoretical basis for this operation mode enabled an appropriate design resulting in power conversion efficiencies above 90% for voltage gain values of 5, 10, 25, and 50, with a peak efficiency of 97%. The guidelines to design boost converters based on the proposed approach are discussed. The simplicity and high performance of this approach opens new avenues in designing regulated dc-dc converters with a high step-up.

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“…However, some drawbacks still exist related to this kind of converter, such as voltage stresses across the diode and a switch, the high number of components, complex control system. These issues cause a limitation in achieving a high‐voltage gain, consequently, the performance of these converters is compromised [4, 13, 14].…”

Section: Introductionmentioning

confidence: 99%