This paper proposes a new method of harmonic identification named DQ axis with Fourier PLS (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 Cabinet Light Fixtures with an active power filter.
Our computing results based on measured current waveforms of three-phase four-wire systems confirm this.