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Communication Dans Un Congrès Année : 2011

Short fail-safe capability and fault diagnosis strategies dedicated to a reconfigurable 5-level double-boost PFC

Résumé

A new 5-level reconfigurable PFC topology with low energy short-failure capability and fast fault-diagnosis is proposed. It includes a 2-stacked low energy 3-level Fly-Cap Boost through two input low frequency rectifiers. 600V–30kHz devices in series pear stack allow one short-fault for transistor and up to two short-faults for diodes. Firstly, authors shows for the first time the low ageing drift and the great stability of the parasite short-failure resistance (Rsc) of failed CoolMos™ transistors and SiC diodes inside well known epoxy molded package (TO220/TO247/TO3P cases). Secondly, two fault-diagnosis strategies are presented: one directly monitors the voltages across the flying capacitors to detect and to localize the faulty switch by means of two sensors; other is based on a harmonic detection (magnitude and phase-shift) at the switching frequency through only one voltage sensor at the input of the PFC. All these strategies are analyzed and simulated with the efficient PD-PWM technique that exhibits a lower THD of the leg-leg input voltage for three-phase application. The design and the most important features are highlighted thanks to a digital control frame and a single-phase mock-up rated to AC115V–DC400V — 4kW–4×31kHz.
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Dates et versions

hal-03902945 , version 1 (16-12-2022)

Identifiants

  • HAL Id : hal-03902945 , version 1

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Thi Thuy Linh Pham, Frédéric Richardeau, Guillaume Gateau. Short fail-safe capability and fault diagnosis strategies dedicated to a reconfigurable 5-level double-boost PFC. EPE 2011: 14th European Conference on Power Electronics and Applications, Birmingham, UNITED KINGDOM, 2011, Birmingham, United Kingdom. ⟨hal-03902945⟩
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