Journal ArticleDOI
Condition Monitoring of DC-Link Capacitors Using Goertzel Algorithm for Failure Precursor Parameter and Temperature Estimation
Prasanth Sundararajan,Mohamed Halick Mohamed Sathik,Firman Sasongko,Chuan Seng Tan,Josep Pou,Frede Blaabjerg,Amit Kumar Gupta +6 more
TLDR
This article tackles the practical difficulties associated with capacitor core-temperature estimation using the capacitance and demonstrates a successful implementation strategy for applying this method in power converters to estimate core temperature online.Abstract:
Aluminum electrolytic capacitors are some of the weakest components in a power converter system. Therefore, condition monitoring of capacitors can prevent unexpected system downtime due to capacitor failures. This article proposes a condition monitoring system for electrolytic capacitors used as dc-link capacitors in front-end rectifier-fed three-phase inverters. The proposed methodology is based on equivalent series resistance (ESR) and capacitance estimation using the Goertzel algorithm. The ESR is used as the degradation indicator, whereas the capacitance value is used as both degradation indicator and temperature-sensitive electrical parameter to estimate core or hotspot temperature. Even though the use of capacitance to estimate hotspot temperature has already been proposed, this article tackles the practical difficulties associated with capacitor core-temperature estimation using the capacitance and demonstrates a successful implementation strategy for applying this method in power converters to estimate core temperature online. It also introduces a self-calibration procedure to mitigate ageing-related errors in temperature estimation. An experimental setup is used to verify the proposed conditioning monitoring system. The experimental results prove the effectiveness and accuracy of the proposed technique.read more
Citations
More filters
Journal ArticleDOI
An Overview of Condition Monitoring Techniques for Capacitors in DC-Link Applications
TL;DR: A comprehensive review and comparison of CM schemes for different types of dc-link applications with emphasis on the application objectives, implementation methods, and monitoring accuracy when being used is provided.
Journal ArticleDOI
ESR Estimation for Aluminum Electrolytic Capacitor of Power Electronic Converter Based on Compressed Sensing and Wavelet Transform
TL;DR: This article proposes a novel method of estimating the ESR for an AEC that uses an innovative compressed sensing approach to acquire the ripple voltage and current and reduces the cost of data sampling, transmission, and storage.
Journal ArticleDOI
An ESR Quasi-Online Identification Method for the Fractional-Order Capacitor of Forward Converters Based on Variational Mode Decomposition
TL;DR: In this article , a quasi-online equivalent series resistance (ESR) identification method that considers the impact of capacitance based on variational mode decomposition (VMD) of forward converters is proposed.
Journal ArticleDOI
Condition Monitoring of DC-Link Electrolytic Capacitor in Back-to-Back Converters Based on Dissipation Factor
TL;DR: In this paper , a method for measuring the dc-link capacitor dissipation factor in a back-to-back converter is presented, which is used to detect electrolytic capacitors' end of useful life.
Journal ArticleDOI
ESR Estimation for Aluminum Electrolytic Capacitor of Power Electronic Converter Based on Compressed Sensing and Wavelet Transform
TL;DR: In this article , a compressed sensing approach is used to acquire the ripple voltage and current of the aluminum electrolytic capacitor (AEC) and then the highfrequency features in the wavelet subspace are reconstructed and used to calculate the ESR.
References
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Journal ArticleDOI
Reliability of Capacitors for DC-Link Applications in Power Electronic Converters—An Overview
Huai Wang,Frede Blaabjerg +1 more
TL;DR: This review serves to provide a clear picture of the state-of-the-art research in this area and to identify the corresponding challenges and future research directions for capacitors and their dc-link applications.
Journal ArticleDOI
Condition Monitoring for Device Reliability in Power Electronic Converters: A Review
TL;DR: The state of the art in condition monitoring for power electronics can be found in this paper, where the authors present a review of the current state-of-the-art in power electronics condition monitoring.
Report SeriesDOI
Energy-Efficiency Policy Opportunities for Electric Motor-Driven Systems
Paul Waide,Conrad U. Brunner +1 more
TL;DR: In this paper, a global analysis of the potential energy savings which could be found in electric motor-driven system (EMDS) is presented, and a comprehensive package of policy recommendations to help governments achieve these significant energy savings in EMDS is proposed.
Journal ArticleDOI
Failure prediction of electrolytic capacitors during operation of a switchmode power supply
TL;DR: In this paper, a new method to set a predictive maintenance is presented and tested on two types of converters, i.e., sound electrolytic filter capacitors and a reference system including all the converter parameters was built for the converter at its sound state, and the lifetime of these capacitors was computed.
Journal ArticleDOI
Dielectric properties of thin films of aluminium oxide and silicon oxide
F. Argall,Andrew K. Jonscher +1 more
TL;DR: In this article, the loss tangent and permittivity of vacuum- baked dielectric films of anodized aluminium oxide and evaporated silicon oxide, in the frequency range 10 -2 -10 7 Hz and temperature range 77-600 °K, were reported.
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