Title :
A state-of-the-art 50 kW-10 kHz soft-switching assisted PWM DC-DC converter for X-ray power generator
Author :
Takahashi, Jun ; Takano, Hiroshi ; Nakaoka, Mutsuo
Author_Institution :
Res. & Dev. Center, Hitachi Med. Corp., Chiba, Japan
Abstract :
A development is carried out on trial with a novel zero voltage soft switching PWM DC-DC high-power converter using IGBTs, which makes the most of the parasitic LC parameters of high-voltage transformer link, for a diagnostic X-ray power generator. Experimental results prove that the zero voltage soft switching strategy based upon the resonant pole concept includes practical potentiality and promising advantages under elevated operation frequency, which leads to a further reduction in the physical size and weight of the total system as well as the realization of high-quality imaging of an X-ray high-voltage power generator for medical utilization.<>
Keywords :
X-ray apparatus; insulated gate bipolar transistors; power convertors; power transformers; power transistors; switching circuits; 10 kHz; 50 kW; DC/DC power convertors; HV; IGBTs; PWM; X-ray generators; ZVS; development; imaging; parasitic LC parameters; power transformers; power transistors; resonant pole concept; soft switching; state-of-the-art; DC-DC power converters; Frequency; Insulated gate bipolar transistors; Poles and zeros; Power generation; Pulse width modulation; Pulse width modulation converters; Resonance; Switching converters; Zero voltage switching;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264229
