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:
Sep. 18, 2007
Filed:
Jan. 26, 2006
Vinh Tung Nguyen Phuoc, Boulogne Billancourt, FR;
Vinh Tung Nguyen Phuoc, Boulogne Billancourt, FR;
Schneider Toshiba Inverter Europe SAS, Pacy sur Eure, FR;
Abstract
A method and system for managing the voltage of a DC bus of a speed controller for an AC electric motor linked to a current distribution network. The method includes comparing a value of the voltage measured on the DC bus with a determined limit value, when the value of the voltage measured on the DC bus becomes greater than the limit value, forcing the slope of an internal ramp to a zero value so as to confer a constant frequency on the stator, and when the value of the voltage measured on the DC bus again becomes less than the limit value, progressively increasing the value of the slope of the internal ramp.