Reliability-Oriented Optimization of the LC Filter Design of a Buck DC-DC Converter

Yi Liu, Meng Huang, Huai Wang, Xiaoming Zha, Jinwu Gong, Jianjun Sun

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

32 Citationer (Scopus)
525 Downloads (Pure)

Abstract

Lifetime is an important performance factor in the reliable operation of power converters. However, the state-of-the-art LC filter design of a buck DC-DC converter is limited to the specifications of voltage and current ripples and constrains in power density and cost without reliability considerations. This paper proposes a method to optimize the design of the LC filters from a reliability perspective, besides other considerations. An enhanced model is derived to quantify the lifetime of the capacitor in the filter considering the electro-thermal stress on it. Furthermore, the influence of different design aspects like the value of capacitance, the value of inductance, type of the capacitor have been discussed, focusing on their impacts on the key design objectives which are the cut-off frequency, lifetime and volume. Based on the analysis, an optimized design is proposed among different parameter sets. A 1 kW converter prototype is applied to verify the theoretical analysis and simulation.
OriginalsprogEngelsk
TidsskriftIEEE Transactions on Power Electronics
Vol/bind32
Udgave nummer8
Sider (fra-til)6323 - 6337
Antal sider15
ISSN0885-8993
DOI
StatusUdgivet - aug. 2017

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