Title: Design of a 260 kVA auxiliary converter based on passive soft-switching

Authors: Xiaofang Wang; Min Wu; Liyu Ouyang

Addresses: School of Information Science and Engineering, Central South University, Changsha 410083, China; Zhuzhou National Engineering Research Centre of Converters Co. Ltd., Zhuzhou 412001, China. ' School of Information Science and Engineering, Central South University, Changsha 410083, China. ' School of Information Science and Engineering, Central South University, Changsha 410083, China.

Abstract: In this paper, a 260 kVA auxiliary converter equipped with passive soft-switching is designed by using modular design method and DC-(AC)-DC-AC converting technique. Firstly, main circuit topology of designed auxiliary converter consisting of a DC/DC module and a DC/AC module is given, and a new type connection mode of DC/DC module is described. Then, the principle and characteristics of buffered passive soft-switching is analysed in detail, and key circuits of the auxiliary converter are also designed. Finally, some experiments are carried out based on a built experimental setup, and the results show the effectiveness and validity of the proposed auxiliary converter.

Keywords: auxiliary converters; passive soft switching; DC-DC converter; DC-AC inverter; DC-(AC)-DC-AC converting; modular design.

DOI: 10.1504/IJSCC.2012.045934

International Journal of Systems, Control and Communications, 2012 Vol.4 No.1/2, pp.89 - 106

Available online: 19 Mar 2012 *

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