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

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.

[1]  Jr. S.G. Parler.  Improved Spice models of aluminum electrolytic capacitors for inverter applications , 2002 .

[2]  A. Amaral,et al.  An Experimental Technique for Estimating the ESR and Reactance Intrinsic Values of Aluminum Electrolytic Capacitors , 2006, 2006 IEEE Instrumentation and Measurement Technology Conference Proceedings.

[3]  Michael L. Gasperi.  A method for predicting the expected life of bus capacitors , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[4]  Pascal Venet,et al.  Failure prediction of electrolytic capacitors during operation of a switchmode power supply , 1998 .

[5]  Harada Kousuke,et al.  Use of ESR for deterioration diagnosis of electrolytic capacitor , 1993 .

[6]  P. Venet,et al.  Realization of a smart electrolytic capacitor circuit , 2002 .

[7]  J. L. Stevens,et al.  The service life of large aluminum electrolytic capacitors: effects of construction and application , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[8]  V. A. Sankaran,et al.  Electrolytic capacitor life testing and prediction , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[9]  Yaow-Ming Chen,et al.  Electrolytic capacitor failure prediction of LC filter for switching-mode power converters , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[10]  Michael L. Gasperi,et al.  Life prediction model for aluminum electrolytic capacitors , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.