Kongpol Areerak, Thanatchai Kulworawanichpong and Sarawut Sujitjorn

pp. 1317 - 1334

Abstract

This paper proposes a new method of harmonic identification named DQ axis with Fourier (DQF) method. It lies on the basis of the DQ axis method enhanced by the sliding window Fourier analysis (SWFA). The SWFA component and the zero-sequence current considered inside the DQF method account for its excellent results on harmonic elimination, and phase balancing. Lack of phase balancing capability has been
a major drawback of the DQ axis, and the SWFA methods used in conjunction with an active power filter. Our computing results based on measured current waveforms of three-phase four-wire systems confirm this.

Keywords

• harmonic identification
• harmonic elimination
• active power filter
• phase balancing
• three-phase system