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박영민(Y.M.Park),한기준(G.J.Han),최세경(S.K.Choi),정명길(M.KJung),이세현(S.H.Lee),김남해(N.H.Kim),이교범(K.B.Lee),송중호(J.H.Song) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
This paper makes a general description of the results at government project which were performed for several years. Through this project, the real capacity of 3.3KV/4MW Class 3 Level Voltage Source Inverter System were designed and the characteristics of its proto type were analyzed, moreover the web based IIMS(Inverter Information Management System) and Virtual Operation Simulator was developed. Now, this system is running for field application test.
3레벨 인버터로 구동되는 유도전동기 직접토크제어의 낮은 스위칭 주파수에서의 토크 리플 저감법
이교범(K. B. Lee),송중호(J. H. Song),최익(I. Choy),유지윤(J Y. Yoo),정명길(M G. Jung),한기준(K. J. Han),윤재학(J. H. Yoon) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
This paper presents a torque ripple reduction technique of direct torque control(DTC) for high power induction motors driven by 3-level Inverters with the inverter switching frequency limited around 0.5-1kHz level. It is noted that conventional DTC algorithms to reduce torque ripple are devised for applications with relatively high switching frequency above 2-3kHz. A new DTC algorithm, especially 'for low switching frequency inverter system, illustrates relatively reduced torque ripple characteristics. Simulation and experimental results show the effectiveness of the proposed control algorithm.