Health Estimation of Individual Capacitors in a Bank With Reduced Sensor Requirements

Gupta, Yugal; Ahmad, Md. Waseem; Narale, Sagar B.; Anand, Sandeep

doi:10.1109/tie.2018.2880725

Cited by 34 publications

(11 citation statements)

References 17 publications

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“…Using (9), RESR and C can be estimated using the voltage and current ripples at (h−1)th or (h+1)th based on the LMS algorithm. Utilizing the same monitoring scheme, [52] further proposes a health estimation method for individual capacitors in a capacitor bank.…”

Section: ) External Signal Injection Based Methods (1d 1h)mentioning

confidence: 99%

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

Zhao

Davari

et al. 2021

IEEE Trans. Power Electron.

150

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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 paper 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 condition monitoring 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.

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Section: ) External Signal Injection Based Methods (1d 1h)mentioning

confidence: 99%

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

Zhao

Davari

et al. 2021

IEEE Trans. Power Electron.

150

View full text Add to dashboard Cite

show abstract

“…When one or several capacitor banks are utilized, monitoring methods using the capacitor's current sensor to estimate the health of individual capacitors cannot be employed due to the increase in the required current sensors, which leads to an increase in weight, volume, and cost of the system. A condition monitoring technique for individual capacitors in a bank is proposed in [69]. The circuit configuration is presented in Figure 15.…”

Section: Esr and Capacitance Estimation Methodsmentioning

confidence: 99%

“…Subsequently, the degradation of individual capacitors is estimated using the physics of failure (PoF)-based model. Thus, the parameters of a capacitor at the [n+1]th instant are expressed as [69]:…”

Section: Esr and Capacitance Estimation Methodsmentioning

confidence: 99%

“…This technique does not require additional sensors for each capacitor in the bank; the required measurements can be realized using existing sensors. However, the measurements and calibrations of individual capacitors in the first stage could be challenging due to the large number of capacitors [69]. The sorting technique is also applied in [74] to sort the SM, which features the highest ESR or the lowest capacitance in each arm of the MMC.…”

Section: Esr and Capacitance Estimation Methodsmentioning

confidence: 99%

“…These errors could lead to incorrect decisions regarding maintenance, thereby increasing expenditure. Various studies [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 ], which are discussed herein, have reported on the health monitoring of capacitors. Capacitance monitoring methods are capable of estimating the capacitance of both Al-Caps and MPPF-Caps; therefore, they would be more beneficial and suitable for different applications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

Dang

Kwak

2020

Sensors

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Capacitors are critical components of power converter systems as they influence the cost, size, performance, and scale of such systems. However, capacitors exhibit the highest degeneration and breakdown rates among all power converter components due to their wear-out failures and short lifespans. Therefore, condition monitoring is a vital process to estimate the health status of capacitors and to provide predictive maintenance for ensuring stability in the operation of power converter systems. The equivalent series resistance (ESR) and the capacitance of the capacitor are two widely used parameters for evaluating the health status of capacitors. Unlike the ESR, the capacitance of a capacitor is suitable for the health monitoring of various types of capacitors; therefore, it is more preferable for large-scale systems. This paper presents an overview of previous research addressing this aspect of capacitors and provides a better understanding of the capacitance monitoring of capacitors utilized in power converter systems.

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Aging Detection for Capacitors in Power Electronic Converters

Zhao

Huai

2022

Fault Analysis and Its Impact on Grid‐connected Photovoltaic Systems Performance

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Health Estimation of Individual Capacitors in a Bank With Reduced Sensor Requirements

Cited by 34 publications

References 17 publications

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

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

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

Aging Detection for Capacitors in Power Electronic Converters

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