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:
Feb. 26, 2013
Filed:
Mar. 03, 2009
Christian Hattrup, Wurselen, DE;
Thomas Scheel, Stolberg, DE;
Peter Luerkens, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A DC/AC power inverter control unit of a resonant-type power converter circuit (), in particular a DC/DC converter, for supplying an output power for use in a high-voltage generator circuitry of an X-ray radiographic imaging system, a 3D rotational angiography device, or X-ray computed tomography device, comprises an interphase transformer () connected in series to at least one series resonant tank circuit (and' orand′) at the output of two DC/AC power inverter stages () supplying a multi-primary winding high-voltage transformer (). The interphase transformer () removes a difference (ΔI) in resonant output currents and (Iand I) of the DC/AC power inverter stages (). In addition, a control method is disclosed which assures that the interphase transformer () is not saturated. Furthermore, the control method ensures zero current operation and provides for minimized input power losses.