제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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An examples of a 6-inch GTO inverter drive system applied for rougher mills

  • Kawasaki, Muneo (Nagasaki Works, Mitsubishi Electric Corporation) ;
  • Okayama, Hideo (Industrial Electronics and Systems Laboratory, Mitsubishi Electric Corporation) ;
  • Koyama, Masato (Industrial Electronics and Systems Laboratory, Mitsubishi Electric Corporation) ;
  • Mitsuhashi, Masamichi (Nagasaki Works, Mitsubishi Electric Corporation) ;
  • Masuda, Hiroyuki (Nagasaki Works, Mitsubishi Electric Corporation)
  • Published : 1996.10.01
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Abstract

Recently, AC variable-speed motors are used for many steel rolling mill drive systems, because of their low maintenance and enhanced control performance. We have been applied GTO inverters for these AC motor drive systems since 1993. We have developed world largest 6-inch diameter GTO and large capacity 3-level GTO inverter up to 20000(kVA). As an example, in this paper, we describe the main circuit, system arrangement and control features of the 6-inches GTO inverters to drive rougher mills for hot strip mill of Pohang Iron & Steel Co., Ltd. The motor capacity is 6000(kW), and it's overload is 250(%).

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