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:
May. 21, 2013
Filed:
Dec. 19, 2008
Fabio Altinier, Codogne, IT;
Terenzio Girotto, Sesto Al Regheny, IT;
Marco Zordan, Padua, IT;
Electrolux Home Products Corporation N.V., Brussels, BE;
Abstract
A method measures the electric power of a universal electric motor () connected to an electric power mains () by a Triac () and supplied by sinusoidal alternating voltage (V(t)). The method determines a first (ton) and a second (toff) instant at which the current (I(t)) supplied to the motor () passes from a zero value to a value other than zero. The current supplied to the motor () at a third instant between the first (ton) and second (toff) instant is measured. A fitting current time pattern (f(t)) approximating the real time pattern of the current (I(t)), and which has a zero current value at the first (ton) and second (toff) instant, and a current value equal to a sampled current at the third instant (tin), is determined. The mean electric power is calculated on the basis of the fitting current time pattern (f(t)).