Journal ArticleDOI
Online Failure Prediction of the Electrolytic Capacitor for LC Filter of Switching-Mode Power Converters
TLDR
A new method to detect the rise of equivalent series resistor in order to realize the online failure prediction of the electrolytic capacitor for LC filter of switching-mode power converter is proposed.Abstract:
The objective of this paper is to propose a new method to detect the rise of equivalent series resistor in order to realize the online failure prediction of the electrolytic capacitor for LC filter of switching-mode power converter. Characteristics of electrolytic capacitors are introduced in this paper. Different experimental measurements are conducted and shown to illustrate the properties of electrolytic capacitors. The proposed online failure prediction method has the merits of low cost and circuit simplicity. It can be integrated within the package of the electrolytic capacitor to improve its reliability. Hardware experimental results are shown to verify the performance of the proposed method.read more
Citations
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Journal ArticleDOI
Machine Condition Prediction Based on Adaptive Neuro–Fuzzy and High-Order Particle Filtering
TL;DR: A new prognostic method is developed using adaptive neuro-fuzzy inference systems (ANFISs) and high-order particle filtering that outperforms classical condition predictors.
Journal ArticleDOI
Life-Cycle Monitoring and Voltage-Managing Unit for DC-Link Electrolytic Capacitors in PWM Converters
TL;DR: In this paper, a low-cost microcontroller for dc-link electrolytic capacitors in pulsewidth modulation converters is presented, which performs online identification of the capacitor's equivalent series resistance (ESR) to detect the life-cycle status and permit preventive maintenance.
Journal ArticleDOI
Diagnostics and Prognostics Method for Analog Electronic Circuits
TL;DR: This work has developed a method for detecting faulty circuit condition, isolating fault locations, and predicting the remaining useful performance of analog circuits through the successive refinement of the circuit's response to a sweep signal.
Journal ArticleDOI
Fault Diagnosis of DC-Link Capacitors in Three-Phase AC/DC PWM Converters by Online Estimation of Equivalent Series Resistance
TL;DR: A novel scheme for the estimation of the equivalent series resistance (ESR) of the dc-link electrolytic capacitor in three-phase ac/dc pulsewidth-modulation converters is proposed for condition monitoring, where the recursive least squares algorithm is used for reliable estimation results.
Journal ArticleDOI
A Review of the Condition Monitoring of Capacitors in Power Electronic Converters
TL;DR: In this paper, the authors classified the capacitors condition monitoring methods into three categories and summarized the state-of-the-art research and the future opportunities targeting for industry applications.
References
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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
Flying capacitor multilevel inverters and DTC motor drive applications
TL;DR: Simulation and practical results will confirm the performance of the proposed strategy when using the multilevel inverter to control an induction motor by the DTC principle.
Journal ArticleDOI
Step-up DC power supply based on a switched-capacitor circuit
TL;DR: A new step-up DC-to-DC power converter with high power density is presented, which contains no inductors or transformers and features high efficiency for this class of powers, small output voltage ripple, continuous input current, low weight and small size.
Journal ArticleDOI
Use of ESR for deterioration diagnosis of electrolytic capacitor
TL;DR: In this article, a new deterioration diagnosis method for the electrolytic capacitor is proposed for a forward-type converter and a buck-boost converter, which is valid for any load condition, no matter whether the circuit has feedback control.
Proceedings ArticleDOI
Life prediction modeling of bus capacitors in AC variable frequency drives
TL;DR: In this paper, a multiple component model for capacitor impedance, a motor drive simulation to create ripple current waveforms, a heat transfer model based on bank geometry, and a capacitor life model derived from the device physics of failure is presented.