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A novel structure of multi-level high voltage source inverter

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3 Author(s)
Young-Seek Kim ; Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea ; Beom-Seok Seo ; Dong-Seok Hyun

This paper deals with a new multi-level high voltage source inverter with GTO thyristors. A multi-level approach seems to be best suited for implementing a high voltage conversion system because it leads to harmonic reduction and safely deals with a high power conversion system independent of the dynamic switching characteristics of each power semiconductor device. However, a conventional multi-level inverter has some problems; voltage unbalance between DC-link capacitors, and overvoltages across the inner switching devices. Therefore, the authors propose a novel structure of a multi-level inverter for improving these problems. They discuss the topology, operating modes and the PWM method.<>

Published in:

TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on  (Volume:5 )

Date of Conference:

19-21 Oct. 1993