An Experimental Technique for Estimating the ESR and Reactance Intrinsic Values of Aluminum Electrolytic Capacitors

Amaral, A.M.R.; Cardoso, Alberto

doi:10.1109/imtc.2006.328273

Cited by 49 publications

(33 citation statements)

References 2 publications

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“…The sampling frequency (f samp ) of the needed signals is 500 kHz. In the case of the ESR of the capacitor, the same was measured through the offline technique developed and proposed in [6]. This is a very important step, since it is well known that the ESR is frequency variable, and the proposed technique must be able to capture this phenomenon.…”

Section: Simulation and Experimental Resultsmentioning

confidence: 99%

An Online Technique for Estimating the Parameters of Passive Components in Non-Isolated DC/DC Converters

Buiatti

Amaral

Cardoso

2007

2007 IEEE International Symposium on Industrial Electronics

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In this paper, a novel online technique used for estimating the parameters of passive components in non-isolated DC/DC converters is presented. The technique is implemented for the Boost and Buck-Boost converters, operating both in Continuous Current Mode (CCM) and Discontinuous Current Mode (DCM). The technique is based on the sampling of the MOSFET gate signal, inductor current and load voltage, which is followed by the processing of the acquired data through different ways such as the least mean squares algorithm. The knowledge of these passive components parameters may be used in the fault diagnosis of such converters. Results obtained from simulations are presented, followed by experimental results in which the inductance, capacitance, load resistor and ESR of the capacitor are estimated, in order to validate the proposed technique.

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Section: Simulation and Experimental Resultsmentioning

confidence: 99%

An Online Technique for Estimating the Parameters of Passive Components in Non-Isolated DC/DC Converters

Buiatti

Amaral

Cardoso

2007

2007 IEEE International Symposium on Industrial Electronics

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“…The drawback of the method is the frequency dependence of capacitance and inductance. To eliminate this drawback, [6] suggests the series combination of capacitor (to be evaluated) and a non-inductive resistor which are fed by a sinusoidal waveform generated by a power amplifier. The capacitor voltage is plotted as a function of input voltage to obtain an elliptical shape.…”

Section: ) Offline Techniques;mentioning

confidence: 99%

“…After settling of MPP, voltage signals are fetched and are used to calculate the value of ESR (t) and C (t) using equation (6) and (7). If ESR value is greater than the set maximum criteria or capacitance is less than its limit, then an output signal from the microcontroller is send for triggering a warning device.…”

Section: Proposed Schemementioning

confidence: 99%

“…End of life criteria is a decrease of capacitance value by 2% [4]. Simulation is performed and the result is tabulated in [5], [6], [7], [8] Offline Capacitance and ESR Signal generator [5], Power amplifier [6,7] Network analyzer [8] medium [9], [10] Online ESR Voltage and current sensor high [11] Online ESR Voltage and current sensor high [12] Online ESR Voltage sensor low [13], [ This paper proposes a low cost and simple technique for a boost converter. This technique estimates both the ESR and C of the input capacitor of boost converter.…”

Section: A Solar Pv and Capacitor Modelsmentioning

confidence: 99%

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An online technique for condition monitoring of capacitor in PV system

Ahmad

Arya

Anand

2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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DC-DC converters are used to interconnect solar photovoltaic (PV) to a dc microgrid or to a battery. Capacitors are connected at the output of a PV terminal to minimize power pulsation. Operational life of capacitor decreases due to various electrical and environmental parameters. In this paper, a method for condition monitoring of the capacitors used in PV system is proposed. The technique combines the estimation of equivalent series resistance (ESR) and capacitance in one tool. This technique allows reliable prediction of capacitor life as compared to existing techniques. The proposed method can be implanted in the same microcontroller that is used for implementing the maximum power point tracking. To validate the efficacy of the method detailed simulation studies are performed in MATLABSimulink.

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“…In [12] an experimental technique is presented which allows the computation of both ESR and reactance values of aluminium electrolytic capacitors. For that, a simple RC circuit (Fig.…”

Section: Off-line Techniquementioning

confidence: 99%

Using Newton-Raphson Method to Estimate the Condition of Aluminum Electrolytic Capacitors

Amaral

Cardoso

2007

2007 IEEE International Symposium on Industrial Electronics

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The aim of this paper is to present an experimental off-line technique that can be used to estimate the condition of aluminum electrolytic capacitors. The aging of aluminum electrolytic capacitors is expressed by the increase of their equivalent series resistance (ESR) and the reduction of their capacitance. Thus, the proposed technique is based in the estimation of both ESR and capacitance values. To validate the theoretical equations some experimental and simulated results will be presented.

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An Experimental Technique for Estimating the ESR and Reactance Intrinsic Values of Aluminum Electrolytic Capacitors

Cited by 49 publications

References 2 publications

An Online Technique for Estimating the Parameters of Passive Components in Non-Isolated DC/DC Converters

An Online Technique for Estimating the Parameters of Passive Components in Non-Isolated DC/DC Converters

An online technique for condition monitoring of capacitor in PV system

Using Newton-Raphson Method to Estimate the Condition of Aluminum Electrolytic Capacitors

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