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High-power switching regulator type DC-DC converters controlled by time-sharing high-frequency thyristor choppers with energy-storage and -transfer reactors

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4 Author(s)
M. Nakaoka ; Kobe University, Kobe, Japan ; N. Vietson ; T. Maruhashi ; M. Nishimura

This paper is concerned with the latest technologies on high-power switching dc-dc converters controlled by time-sharing high-frequency thyristor chopper with energy -storage and -transfer reactor coupling links, which can operate over an ultrasonic chopping frequency region in the extent of 20KHz or more than 20KHz. The possible circuit configurations of new thyristor type switching step-up and down dc-dc converters relating to magnetic-power semiconductor devices and their unique features are described and discussed from a practical point of view. The general procedures of circuit analysis and performance evaluations to offer the desirable design data are presented, and the steady-state open-loop control characteristics and a closed-loop control policy are elucidated on the basis of the theoretical and experimental results. Thyristor type high-frequency switching step-up dc-dc converter using time-sharing control technique is also originally examined and discussed herein.

Published in:

IEEE Transactions on Magnetics  (Volume:15 ,  Issue: 6 )