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. 08, 2013
Filed:
Mar. 15, 2010
Applicant:
Esa Putkinen, Hyvinkää, FI;
Inventor:
Esa Putkinen, Hyvinkää, FI;
Assignee:
Kone Corporation, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
DC/DC bridge for controlling a direct-current load (M), which bridge is provided with controllable semiconductor switches (S-S, S-S) and with a control unit (BC). The bridge comprises two bridge sections (B, B), at least the first bridge section (B) of which is controlled with pulse-width modulation (PWM) to regulate the current magnitude, and which bridge comprises a determination of the current of the direct-current load (M). The second bridge section (B) conducts direct current when the determined value () of the current of the direct-current load differs from zero by more than the limit value () of the current.