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:
Jul. 09, 2013
Filed:
Feb. 19, 2009
Giovanni Gonano, Padua, IT;
Pietro Mario Adduci, Settimo Milanese, IT;
Edoardo Botti, Vigevano, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A method for testing the operating conditions of an electric network, including at least one operating state, including the steps of providing a voltage signal (v(t)) to a network load and measuring the instantaneous current signal (i(t)) circulating in the load, delaying the instantaneous current signal (i(t)) to generate an instantaneous current signal delayed ((i(t+τ)) by a predetermined amount of time (τ), the predetermined amount of time (τ) being a function of the operating state of said load, the method including the steps of calculating, within a predetermined measurement time (Tm), an admittance ratio (G(τ)) between the mean of the product of the voltage signal (v(t)) and the delayed instantaneous current signal (i(t+τ)), and the mean of the square of the voltage signal (v(t)), and to compare the value of the admittance ratio (G(τ)) with a range of predetermined values (Gmin,Gmax) to determine the operating state of the electric network.