The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2012
Filed:
Oct. 08, 2008
Karim Abdennadher, Gieres, FR;
Christophe Rosset, Echirolles, FR;
Gérard Rojat, Chaponost, FR;
Pascal Venet, Saint Jean de Niost, FR;
Karim Abdennadher, Gieres, FR;
Christophe Rosset, Echirolles, FR;
Gérard Rojat, Chaponost, FR;
Pascal Venet, Saint Jean de Niost, FR;
MGE UPS Systems, Montbonnot-Saint-Martin, FR;
Abstract
A method and device for predicting defects of a capacitor, the method including determining the ripple voltage (Udc), the temperature (TP), and the current (Ic) of the capacitor, determining the value of an equivalent series resistance (ESR) of the capacitor, and the capacitance value (C) of the capacitor using a digital filter, determining information representative of the state of aging of the capacitor according to the temperature of the capacitor, and displaying that information and information representative of the value of the capacitance (C) and/or information representative of a cause associated with the state of aging according to the capacitance value. The device may include a converter and an uninterruptible power supply.