대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

DC-링크 전압균형과 최소 온-오프 시간을 고려한 새로운 3-레벨 GTO 인버터 제어기법

A New Switching Method for 3-level GTO Inverter Considering DC-link Voltage Balancing and Minimum on/off time

  • 이요한 (한양대학고 전기공학과) ;
  • 현동석 (한양대학고 전기공학과)
  • Lee, Yo-Han (Dept. of Electrical Engineering, Hanyang University) ;
  • Hyun, Dong-Seok (Dept. of Electrical Engineering, Hanyang University)
  • 발행 : 1994.07.21
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초록

In realizing a three-level GTO inverter, we should keep the voltage balancing of DC-link capacitors and consider minimum on/off time of GTO thyristors in order to make the same blocking voltage across each device and to minimize the harmonic components of the output voltage and current. In this raper, a new PWM scheme based on space voltage vectors, by which it is possible to keep neutral-point voltage and avoid narrow pulse, is presented. Experimental results verify that the proposed PWM control scheme is suitable fur hish power and high voltage three-level GTO inverters applied to induction motor drives.

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