Investigation of Harmonic Detection Techniques for Shunt Active Power Filter
نویسندگان
چکیده
Active power filters are used to eliminate current harmonics of non-linear loads. This paper evaluates three different methods of determining the compensating current for a shunt active filter that is working under nonsymmetrical conditions. The paper compares the instantaneous reactive power theory, the synchronous reference frame theory and fast Fourier transform techniques. The comparison is based on simulation results. For unbalanced and non-sinusoidal source voltage conditions, the results obtained by the methods referenced are quite different. The instantaneous reactive power theory method had shown the best choice for all situations studied in this paper.
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