대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1993년도 하계학술대회 논문집 B
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- Pages.1016-1019
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- 1993
전력용 3상 PWM 파형의 상용전원 변환용 Filter 연구
A study of power filter for conversion of 3 phase PWM waveform to grid power line
- Yea, Hwan-Je (Dept. of Electrical Eng. Kyung-Pook Nat. Univ.) ;
- Sea, Young-Taek (Dept. of Electrical Eng. Kyung-Pook Nat. Univ.) ;
- Oh, Chul-Soo (Dept. of Electrical Eng. Kyung-Pook Nat. Univ.)
- 발행 : 1993.07.18
초록
A low-pass L-C filter has been adopted for conversion of frequency variable 3 phase PWM waveform to a grid power line and it is used for attenuation of harmonics in the VSI PWM Inverter. A optimum design of the L, C parameters was derived. The result of the study show that the inductor L seems to have a certain air gap for linear I-V characteristics and the resonant frequency of the filter must be set below the 5th harmonics of the grid power line. Further, the voltage drop in L must be within a adequate limit compared to grid power voltage.
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