Title :
A PDM controlled series resonant multi-level converter applied for X-ray generators
Author :
Wu, T.-F. ; Hung, J.-C.
Author_Institution :
Power Electron. Appl. Res. Lab., Nat. Chung Cheng Univ., Chia-Yi, Taiwan
Abstract :
This paper presents analysis, design and practical consideration of a pulse-density modulation (PDM) controlled series resonant multi-level converter applied for X-ray generators. The proposed converter is operated at 100 kHz and with a maximum output power of 30 kW. The resonant tank of the converter is operated slightly above its resonance to achieve zero voltage switching and low turn-off loss at switching transition resulting in low loss. With the multi-level configuration, the voltage imposed on the switches is only half of the input voltage. A prototype has been implemented and the experimental results have demonstrated the feasibility of the proposed system
Keywords :
X-ray production; power supplies to apparatus; pulse modulation; resonant power convertors; switching circuits; 100 kHz; 30 kW; PDM controlled series resonant multi-level converter; X-ray generators; input voltage; low loss; low turn-off loss; pulse-density modulation; resonant tank; switching transition; zero voltage switching; Control systems; Power generation; Pulse modulation; Pulse width modulation converters; Resonance; Switches; Switching converters; Voltage control; X-ray imaging; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785661
