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:
Mar. 02, 2004
Filed:
Oct. 01, 2002
Johann W. Kolar, Vienna, AT;
Delta Energy Systems (Switzerland) AG, Bern, CH;
Abstract
An apparatus for converting a three-phase voltage system to a DC voltage is supported by an output capacitor and a star circuit. On the input side of filter capacitors is a controllable three-phase bridge and at a positive output of the bridge circuit, a current-stabilizing inductance is included, which, in conjunction with a step-up controller diode and a step-up controller transistor, forms a DC voltage/DC voltage step-up controller which is integrated in the converter structure. The phase arms of the three-phase bridge have an identical structure and their conductance state can be controlled by control switches. In order to produce an output voltage from the system which is below the mean value of the maximum output voltage of the bridge circuit, the step-up controller transistor remains in the switched-off state, and a voltage value which is above the maximum output voltage is formed.