Method and system for predicting remaining life of electrolytic capacitor

A technology for electrolytic capacitors and prediction systems, which is applied to instruments, measuring electricity, measuring devices, etc., can solve the problem of inability to accurately predict the remaining service life of electrolytic capacitors, and achieve the effect of reducing errors.

Inactive Publication Date: 2017-04-26
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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Problems solved by technology

[0003] The embodiment of the present invention provides a method and system for predicting the remaining life of an electrolytic capacitor, which solves the problem that the existing technology cannot accurately predict the remaining life of an electrolytic capacitor that has been used

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  • Method and system for predicting remaining life of electrolytic capacitor
  • Method and system for predicting remaining life of electrolytic capacitor

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040]Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may...

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Abstract

The present invention provides a method and system for predicting the remaining life of an electrolytic capacitor. The method comprises a step of obtaining the capacitance temperature T of the electrolytic capacitor in an acquisition cycle Delta T from tn-1 time to tn time in a working state, and calculating the average capacitance temperature Tn in the period, wherein tn=(tn-1)+Delta t, a step of calculating the equivalent working time Delta t' corresponding to a working time Delta t and average capacitance temperature Tn in a reference working temperature Tk according to the capacitance temperature of the electrolytic capacitor and an accelerated life model corresponding to the working time, a step of calculating and obtaining a tn time and the remaining life Ln of the electrolytic capacitor characterized by the reference working temperature Tk according to Ln=L(n-1)-Delta t', and step of carrying out iterative calculation. According to the method and system for predicting the remaining life of an electrolytic capacitor provided by the embodiment, the detection frequency can be set according to the requirements of use, thus errors are reduced as much as possible, and the technical effect of accurate prediction is achieved.

Description

technical field [0001] The invention belongs to the field of reliability of electrolytic capacitors, in particular to a method and system for predicting the remaining life of electrolytic capacitors, which can be used to predict the service life of electrolytic capacitors used in wind power generators. Background technique [0002] In the prior art, the detection of the remaining life of the electrolytic capacitor can predict the degree of aging and the remaining life according to the measured parameters of the electrolytic capacitor and the degeneration of the relevant parameters of the electrolytic capacitor; some patents also disclose technical solutions, among which The time that has been used is estimated, and then the design life is deducted from the time that has been used to obtain the remaining life. The above two methods can only estimate the remaining service life, but cannot achieve a more accurate prediction of the remaining service life. Contents of the inven...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 薛建国赵亮于德洋邢波
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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