Transformerless multicellular dc-dc converter for highly efficient next generation dc distribution system

Hayashi, Yusuke; Matsugaki, Yoshikatsu; Ninomiya, Tamotsu; Kose, Sayaka; Tanoue, Hideto

doi:10.23919/epe17ecceeurope.2017.8099166

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…The parallel association (Multicellular buck converter) of several single-cell converters (N cells) makes it possible to reach a high power without increasing constraints on the power switches (Figure 3). The output current is distributed on cells which implies an equal repartition of losses and components heating on phases [9,10].…”

Section: Standard Parallel Structuresmentioning

confidence: 99%

Development of Multicellular Converter with Magnetic Coupler for Space Charge Measurement on DC Cable

Jebli¹,

Martiré²,

Laurentie³

et al. 2022

EJEE

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One of the main issues on high voltage direct current (HVDC) cable is the electric field distribution on the insulation induced by space charges accumulation. Indeed, the space charges can cause a local increase of the electric field, which will accelerate ageing and may lead to dielectric breakdown. The TSM is one of the techniques that allow space charge measurements. The principle of the TSM consists in disturbing the electrostatic balance of the cable insulation system using a short thermal stimulus. For this study, the thermal pulse is created by Joule effect. This paper describes the structural optimization of a multi-cell DC-DC converter and its use in a high-current application to produce thermal stimulus. The design of the converter is first presented, then a multi-objective optimization is proposed for minimizing volume and losses. Finally, experimental results using a converter prototype which confirmed the space charge measurement principle are presented.

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Section: Standard Parallel Structuresmentioning

confidence: 99%