Influence of aging on electrolytic capacitors function
in static converters: Fault prediction method

Venet, Pascal; Lahyani, Amine; Grellet, G.; Ah-Jaco, A.

doi:10.1051/epjap:1999112

Cited by 33 publications

(15 citation statements)

References 2 publications

(5 reference statements)

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“…About 30% of the breakdowns in electronic equipment are caused by static converters. More than half of these damages are due to the electrolytic capacitors used to filter the output voltage [9].…”

Section: Ill Failures In Boost Convertersmentioning

confidence: 99%

Use of ESR to predict failure of output filtering capacitors in boost converters

Amaral¹,

Cardoso

2004

2004 IEEE International Symposium on Industrial Electronics

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4bstract-This paper addresses the subject of fault diagnosis in boost converters, operating in continuous and in discontinuous mode, focusing particularly, in the output filtering electrolvtic capacitors.The failure of those capacitors leads to an increase of their equivralent series resistance (ESR), and therefore, the efficiency decreases and the output voltage ripple increases.Two diagnostic methods are used, one is based on the relation between the mean values of the output voltage ripple and of the capacitor current ripple, both considered during the conduction time of the transistor, and the other is based on the relation between the value of the output voltage ripple for Ton/2 and the mean value of the output current.Several simulated and experimental results are presented for two DC-DC boost-type converters, one operating in the continuous mode and the other in the discontinuous mode.

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Section: Ill Failures In Boost Convertersmentioning

confidence: 99%

Use of ESR to predict failure of output filtering capacitors in boost converters

Amaral¹,

Cardoso

2004

2004 IEEE International Symposium on Industrial Electronics

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“…According to [13], more than half of faults of static converters are caused by degraded electrolytic capacitors. On the other hand, the presence of large voltage ripples is an essential factor that accelerates the degradation of electrolytic capacitors [11].…”

Section: Introductionmentioning

confidence: 99%

Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors

et al. 2016

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The problem of voltage/current ripples has become a primary power quality issue for dc systems, which could seriously degrade the performance on both the source side and the load side and lead to reliability concerns. In this paper, a single-phase Pulse width modulation-controlled rectifier is taken as an example to investigate how active control strategies can improve the power quality of dc systems, reduce voltage ripples, and, at the same time, reduce the usage of electrolytic capacitors. The concept of ripple eliminators recently proposed in the literature is further developed, and the ratio of capacitance reduction is quantified. With such ripple eliminators, this power quality problem is formulated as a control problem to actively divert the ripple current on the dc bus. The main focus of this paper is to investigate how advanced control strategies could improve the performance of ripple eliminators. An advanced controller on the basis of the repetitive control is proposed for one possible implementation of ripple eliminators in the continuous current mode (CCM). Experimental results are presented to verify the effectiveness of the strategy with comparison to another ripple eliminator operated in the discontinuous current mode. It has been shown that the proposed instantaneous ripple-current diversion in CCM leads to a nearly fourfold improvement of performance.INDEX TERMS Instantaneous diversion of ripple currents, CCM, DCM, ripple eliminators, voltage ripples, repetitive control, reliability, electrolytic capacitors.

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“…(T aging temperature, t aging time, ESR(0) resistance ESR at time t = 0; k constant depending on design and construction of the capacitor) which-can he taken for diagnosis of the remaining lifetime [21]. The internal resistance increases remarkably during.…”

Section: Esr(t) Esr(0) T -273kmentioning

confidence: 99%

Some diagnosis methods for voltage source inverters in variable speed drives with induction machines a survey

Fuchs

IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)

206

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Status monitoring and performance diagnosis for variable speed ac drives today is a need, more o r less, depending on their application. Diagnosis can help to avoid unplanned standstill, to make possible to run an emergency operation in case of a fault or to keep the time to repair short in case of a fault. For the voltage source inverter several faults are possible. In this paper, these faults and their diagnosis are covered. Possible faults and remedial stategies are listed. I t is enumerated, which faults in today's standard protection systems are diagnosed. The main faults, in general not covered in these systems, are the transistor open circuit fault and the dc bus capacitor fault. I n these fields diagnosis methods a r e under reseach. Some of the various reports of research groups in this field a r e outlined here as a survey with respect to function and properties.

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Influence of aging on electrolytic capacitors function in static converters: Fault prediction method

Cited by 33 publications

References 2 publications

Use of ESR to predict failure of output filtering capacitors in boost converters

Use of ESR to predict failure of output filtering capacitors in boost converters

Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors

Some diagnosis methods for voltage source inverters in variable speed drives with induction machines a survey

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