Method modular power supply for x-ray tubes and method thereof

US7830685B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Bernhard Wagner · Fellbach, DE
• Bernd Freiheit-Jensen · Hamburg, DE
• Christian Vollertsen · Hamburg, DE
• Christoph Loef · Aachen, DE
• Cornelius Paul · Hamburg, DE
• Frank Mueller · Cincinnati, US
• Klaus F. Hoffmann · Hamburg, DE
• Marc Klingelhoeller · Hamburg, DE
• Wolfgang Rexhausen · Bleckede, DE

Key dates

• Filing date: Jan 26, 2006
• Grant date: Nov 9, 2010
• Expiry date: Sep 28, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02M3/33573
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A power supply power supply (30) comprising a DC voltage supply, a control unit and a plurality of high voltage channels (33a-33d) is suggested. Each high voltage channel (33) includes an inverter (IKTV), a resonance circuit, a transformer (TR), and a rectifier (RECT). The resonance circuit cooperates with the inverter (INV). The inverter (INV) is formed by a first switching unit and a second switching unit whereby a voltage of a first polarity can be applied to the resonance circuit in a first switching state, whereas a voltage of a second polarity can be applied to the resonance circuit in a second switching state. The switching states can be switched by the control unit in such a manner that in a first mode of an operation for high output power, the output power can be adjusted by changing the switching frequency in the range of the resonance frequency. In a second mode of operation for low output power, the output power can be adjusted by changing the duration of the switching state at an essentially constant switching frequency.