Life Estimation of DC-Link Capacitor in Multi-operating Traction Drive System

被引：7

作者：

Yao, Bo ^{[1
]}

Ge, Xinglai ^{[1
]}

Shu, Lingzhou ^{[2
]}

Wang, Huimin ^{[1
]}

Hu, Zilang ^{[1
]}

Gou, Bin ^{[3
]}

机构：

[1] Southwest Jiaotong Univ, Key Lab Magnet Suspens Technol & Maglev Vehicle, Minist Educ, Chengdu, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Informat & Software Engn, Chengdu, Peoples R China

[3] Nanyang Technol Univ, NTU Corp Lab, Rolls Royce, Singapore, Singapore

来源：

2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) | 2019年

基金：

美国国家科学基金会;

关键词：

DC-link capacitor; hot spot temperature; multi-operating conditions; traction drive system; RELIABILITY; MODEL;

D O I：

10.23919/icpe2019-ecceasia42246.2019.8796965

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The reliability of DC-link capacitor in the traction drive system is regarded as a major problem that should be resolved well. Based on this, this paper proposes a life estimation method of DC-link capacitor to realize the reliability evaluation of the traction drive system. Starting from the capacitor life model, the actual multi-operating data is converted into the calculation of traction load through simulation tests, and the capacitor voltage and current ripple signals are obtained. Fourier method by combining the sliding window grouping with the neural network are used to analyze the dynamics of the hot spot temperature, and is optimized by use the Newton's law of cooling. Finally, the capacitor loss is analyzed through the experimental test results, and the safe operation of the system is considered, and the lifetime of the capacitor under multi-operating conditions is shown.

引用

页码：2743 / 2748

页数：6

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