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Stable conditions in high-voltage output push-pull current-fed converters

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3 Author(s)
Ohtsu, S. ; NTT Appl. Electron Lab., Tokyo, Japan ; Yamamoto, K. ; Sugiura, T.

The authors analyze the relationship between the magnetizing inductance of a transformer and a choke-coil required to enhance the switching frequency and maintain a stable operation without increasing the power loss of high-voltage power supplies. The relationship between the transformer magnetizing inductance and the switching frequency in the highly efficient stable operation of a high-voltage output push-pull current-fed converter is also defined. Based on the analysis, high-voltage output power supplies can be designed raising the switching frequency from approximately 20 kHz to 200 kHz, without an increase in power loss. It is experimentally show that the efficiency is high over a wide frequency range if the transformer and the choke-coil magnetizing inductance have suitable values.<>

Published in:

Power Electronics Specialists Conference, 1990. PESC '90 Record., 21st Annual IEEE

Date of Conference:

0-0 1990