Comparative study of resonant and non-resonant DC-DC converter with parasitic LC components of high-voltage transformer

Author

Takano, H. ; Takahashi, J. ; Sun, J.M. ; Nakaoka, M.

Author_Institution

Res. & Dev. Center, Hitachi Med. Corp., Chiba, Japan

Volume

2

fYear

1998

fDate

12-15 Oct. 1998

Firstpage

1580

Abstract

This paper presents a novel nonresonant PWM DC-DC power converter for an X-ray high-voltage power generator using the parasitic impedances of the high-voltage high-frequency link transformer compared to the conventional series-parallel resonant DC-DC power converter. The key point of this approach is to evaluate the effectiveness of a reduction of the turn ratio of the high-voltage high-frequency transformer on improvements in the total power conversion efficiency and the power factor in applying a boost AC-DC power converter as the DC voltage source, especially in the light output load ranges accompanied with long exposure term.

Keywords

DC-DC power convertors; PWM power convertors; X-ray production; high-frequency transformers; power supplies to apparatus; power transformers; DC voltage source; X-ray high-voltage power generator; boost AC-DC power converter; high-voltage high-frequency link transformer; light output load range; nonresonant PWM DC-DC power converter; parasitic impedance; power conversion efficiency; power factor; turn ratio reduction; Capacitance; DC-DC power converters; Impedance; Power conversion; Power generation; Power transformer insulation; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE

Conference_Location

St. Louis, MO, USA

ISSN

0197-2618

Print_ISBN

0-7803-4943-1

Type

conf

DOI

10.1109/IAS.1998.730351

Filename

730351