Reliability Evaluation of DC-link Capacitors in Multi-drive Systems

被引：0

作者：

Huang, Shili ^{[1
]}

Wang, Haoran ^{[2
]}

Kumar, Dinesh ^{[3
]}

Zhu, Guorong ^{[1
]}

Wang, Huai ^{[2
]}

机构：

[1] Wuhan Univ Technol, Sch Automat, Wuhan, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, Aalborg, Denmark

[3] Danfoss Drives AS, Global Res & Dev Ctr, Grasten, Denmark

来源：

2019 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2019年

基金：

中国国家自然科学基金;

关键词：

DC-link capacitor; multi-drive systems; lifetime; adjustable speed drive; RECTIFIER;

D O I：

10.1109/ecce.2019.8912851

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper proposes a time-efficient equivalent model for the ripple current analysis of DC-link capacitors in multi-drive systems and investigates the impact of number of drives and grid voltage unbalance on the capacitor lifetime. Firstly, a time-efficient equivalent model for multi-drive systems is proposed to obtain the electro-thermal stress of capacitor in individual drive. Then, applying the lifetime prediction method, the reliability of the DC-link capacitors in multi-drive systems considering the interactions among multiple drives are studied. Finally, the quantitative impact of number of drives and unbalanced grid conditions on the lifetime of DC-link capacitors are discussed. The outcomes support the model based sizing of DC-link capacitors for multi-drive systems considering the electro-thermal and lifetime aspect requirements.

引用

页码：3157 / 3162

页数：6

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