Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1993.07b
- /
- Pages.1016-1019
- /
- 1993
A study of power filter for conversion of 3 phase PWM waveform to grid power line
전력용 3상 PWM 파형의 상용전원 변환용 Filter 연구
- 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.)
- Published : 1993.07.18
Abstract
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.
Keywords