A Compact MW-Class Short Pulse Generator

Nikoo, Mohammad Samizadeh; Hashemi, Seyed Morad-Ali

doi:10.1109/tps.2018.2837038

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…hybrid switched capacitor converters [14]) which enables a high-voltage level at the output. This could provide more efficient solutions than current ultra-high step-up dc-dc converters [15], with applications in electron gun drivers, terahertz vacuum electron devices, x-ray sources, and pulsedpower [16], [17]. The inset in Fig.…”

Section: Design Aspects and Experimental Resultsmentioning

confidence: 99%

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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