An Overview of Condition Monitoring Techniques for Capacitors in DC-Link Applications

被引：144

作者：

Zhao, Zhaoyang ^{[1
,2
]}

Davari, Pooya ^{[2
]}

Lu, Weiguo ^{[1
]}

Wang, Huai ^{[2
]}

Blaabjerg, Frede ^{[2
]}

机构：

[1] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2021年 / 36卷 / 04期

关键词：

Capacitors; Condition monitoring; Degradation; Meters; Impedance; Power electronics; Reliability; Ceramic capacitors; condition monitoring (CM); dc link; electrolytic capacitors; film capacitors; reliability; ALUMINUM ELECTROLYTIC CAPACITORS; POWER ELECTRONIC CONVERTERS; ESR ESTIMATION METHOD; FAULT-DIAGNOSIS; NONINVASIVE TECHNIQUE; ONLINE ESTIMATION; PWM CONVERTERS; OFFLINE TECHNIQUE; DC/DC CONVERTERS; OUTPUT CAPACITOR;

D O I：

10.1109/TPEL.2020.3023469

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：

Capacitors are widely used in dc links of power electronic converters to balance power, suppress voltage ripple, and store short-term energy. Condition monitoring (CM) of dc-link capacitors has great significance in enhancing the reliability of power converter systems. Over the past few years, many efforts have been made to realize CM of dc-link capacitors. This article gives an overview and a comprehensive comparative evaluation of them with emphasis on the application objectives, implementation methods, and monitoring accuracy when being used. First, the design procedure for the CM of capacitors is introduced. Second, the main capacitor parameters estimation principles are summarized. According to these principles, various possible CM methods are derived in a step-by-step manner. On this basis, a comprehensive review and comparison of CM schemes for different types of dc-link applications are provided. Finally, application recommendations and future research trends are presented.

引用

页码：3692 / 3716

页数：25

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