A new Method for Reducing Harmonics in Input AC Line Currents of Converter by 2-4 Switching taps on Interphase Reactor

상간리액터의 2-4？ 변환 방식에 의한 콘버어터 입력 전류의 고조파 저감에 관한 연구

In this paper, a new method for reducing harmonics in input AC line currents of converter is presented, which is due mainly to the equipment of 2-4 switching taps on interphase reactor. When this method is applicable to conventional 12 pulse converter, the 24 pulse converter, the 24 pulse or 48 pulse converter is controlled by firing angles. The former is performe in 2 tap method when less than 15 degrees, and the letter in 4tap method when more than 15 degrees. Therefore, the proposed method has the advantages of reducing harmonics in full range of control angle and comparison with the conventional 3 tap method. We proved the validity of that theoretically and experimentally.