Suppression of converter introduced harmonic currents using a forced-commutated cycloconverter

摘要

A method of current harmonic suppression through application of a modified forced-commutated cycloconverter is described. The cycloconverter is operated using current-error control with hysteresis. Advantage is taken of the multiple source voltage switching choices available with the cycloconverter to produce corrective harmonic current injection that tracks the command with minimum error. A numerical simulation of the filter is made with a three-phase, six-pulse rectifier load. The results are presented in the forms of both harmonic residual components and Fourier spectra.