2016
DOI: 10.1049/iet-pel.2015.0821
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Capacitance measurement method using sinusoidal voltage injection in isolating phase‐shifted full‐bridge DC–DC converter output stage

Abstract: When it comes to the reliability of power electronics, wear-out caused by ageing of electrolytic capacitors is a major concern. The capacitor ageing presents indicators such as a decrease in the capacitance and an increase in the equivalent series resistance, the detection of which can be used for capacitor health monitoring. In this study, the measurement of the output stage capacitance in an isolating DC-DC converter output stage is shown, which is used to assess the capacitor condition. In addition to prese… Show more

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Cited by 10 publications
(7 citation statements)
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“…where ∆v C is the variation of capacitor voltage in the estimation interval. The other technique in [56] injects a sinusoidal voltage signal to the output terminal of an isolating DC-DC converter. Subsequently, capacitance is estimated using the impedance of the capacitor, which is determined as [56]:…”
Section: Capacitance Estimation Methodsmentioning
confidence: 99%
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“…where ∆v C is the variation of capacitor voltage in the estimation interval. The other technique in [56] injects a sinusoidal voltage signal to the output terminal of an isolating DC-DC converter. Subsequently, capacitance is estimated using the impedance of the capacitor, which is determined as [56]:…”
Section: Capacitance Estimation Methodsmentioning
confidence: 99%
“…Several existing methods for buck converters [38,43,44] are capable of applying boost converters [39,51,52]. Monitoring techniques for the fly-back converter and the isolating DC-DC converter are proposed in [54][55][56]. The approaches in [43,44] are also adapted for fly-back converters in [54,55].…”
Section: Esr and Capacitance Estimation Methodsmentioning
confidence: 99%
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“…An industrial survey shows that capacitors cause 30% of the total failures in converter circuits [5]. As a result, the electrolytic capacitors are mostly concerned in the reliability research of converter circuits [6][7][8][9][10]. The degradation of capacitor will lead to increased voltage ripple, additional power loss, and even instability of the converter.…”
Section: Introductionmentioning
confidence: 99%