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:
Apr. 21, 2015
Filed:
Mar. 03, 2009
Erik Svend Christiansen, Faenza, IT;
Laurent Jeanneteau, Compiegne, FR;
Alex Viroli, Forli, IT;
Massimo Zangoli, Santercangelo di Romagna, IT;
Thibaut Rigolle, Forli, IT;
Michael Herzog, Insingen, DE;
Erik Svend Christiansen, Faenza, IT;
Laurent Jeanneteau, Compiegne, FR;
Alex Viroli, Forli, IT;
Massimo Zangoli, Santercangelo di Romagna, IT;
Thibaut Rigolle, Forli, IT;
Michael Herzog, Insingen, DE;
Electrolux Home Products Corporation N.V., Zaventem, BE;
Abstract
A method for dynamic wave form correction includes providing an input power signal by an AC power source and rectifying the input power signal by a frequency converter into a half waves signal whose half wave is delimited by two subsequent zero-crossings. The time lag between the two zero-crossings defines a half wave duration. The frequency converter converts the half waves signal into a working current signal for supplying an induction heating device. In a frequency shifting operation, the frequency of the working signal is first increased from a first base frequency to a maximum frequency, and is then decreased to a second base frequency different from the first base frequency within a time period smaller than the half wave duration. A zero crossing of the half wave signal is passed within the frequency shifting operation. An arrangement for dynamic wave form correction of a power supply is also provided.