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PRACTICAL ACTIVE POWER FILTERS USING SI-THYRISTORS
S.ATOH,T.SHIOTA,T.YAMADA,S.ARAKI,M.KOHATA 전력전자학회 1989 ICPE(ISPE)논문집 Vol.- No.-
We have developed a practical active power filters using SI(Static Induction)-Thyristors, a self-turn-off device excellent in high speed switching characteristics. This active filter was applied to VVVF inverter-driven water distribution system and has operated in the best conditions since the end of the last year. The active filter we have developed uses the compensating algorithm based on the instantaneous spatial vector theory and achieves nig11 speed and high accuracy controls by performing the on-line arithmetic operation with a digital signal processor. As for compensating performances suppression effects within 2% have been a-chieved as compared with the fundamental components at the 5th to 19th harmonics components of inverter current contained in the input current of inverter system.<br/>