Higher-harmonic distortion canceller using a switching amplifier with minimum output power

Author

Katsuki, Akihiko ; Kuniyoshi, Kenji ; Hayashi, Takeshi ; Shibata, Yasuhiro ; Matsushima, Masahiro

Author_Institution

Dept. of Comput. Sci. & Electron., Kyushu Inst. of Technol., Fukuoka, Japan

fYear

1995

Firstpage

235

Lastpage

242

Abstract

A new feedforward-controlled higher-harmonic distortion canceller is presented in this paper. The input currents of electronic apparatus or industrial machines are pulsatile and contain many higher harmonic components, because capacitor-input smoothing circuits, phase-controlled rectifiers and so on are utilized. These higher-harmonic currents distort the line voltage waveform, and influence the equipment connected with the same line. The proposed circuit was composed by making use of our original noise superimposer, and decreased the total harmonic distortion from 5.07% to 0.34%

Keywords

amplifiers; feedforward; harmonic distortion; interference suppression; signal generators; switching circuits; cancellation signal generator; capacitor-input smoothing circuits; electronic apparatus; feedforward-control; higher-harmonic distortion canceller; industrial machines; input currents; line voltage waveform distortion; minimum output power; noise superimposer; phase-controlled rectifiers; switching amplifier; total harmonic distortion; Circuit noise; Frequency; High power amplifiers; Impedance; Noise cancellation; Power amplifiers; Power generation; Signal generators; Smoothing methods; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1995. INTELEC '95., 17th International

Conference_Location

The Hague

Print_ISBN

0-7803-2750-0

Type

conf

DOI

10.1109/INTLEC.1995.498959

Filename

498959