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High-frequency parallel resonant converter for X-ray generator utilizing parasitic circuit constants of high voltage-transformer and -cables

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4 Author(s)
Hino, H. ; Hitachi Med. Corp., Chiba, Japan ; Hatakeyama, T. ; Kawase, T. ; Nakaoka, M.

The authors describe a resonant PWM (pulse-width-modulated) inverter-linked DC-DC converter which uses the high-voltage transformer parasitic LC circuit parameters as resonant components and the high-voltage cable input capacitance as smoothing filter. Theoretical results obtained by computer-aided simulation and experimental results obtained by a test circuit including prototype transformers are illustrated and discussed from a practical point of view. The phase-shift PWM control for adjusting the DC output voltage of the resonant converter is presented. One of the advantages of this converter is minimization of circuit components; this kind of circuit topology can minimize the size and weight of power supply systems and can be applied to the filament heating circuit connected to the cathode of the X-ray tube

Published in:

Telecommunications Energy Conference, 1989. INTELEC '89. Conference Proceedings., Eleventh International

Date of Conference:

15-18 Oct 1989