Simplification of harmonics filter for a matrix converter-based drive

Authors: GYTIS PETRAUSKAS, GYTIS SVINKUNAS, RASA JURASKIENE

Abstract: In this paper, an analysis of the interaction between the switching ripple filter components of a matrix converter-based drive and the components of a 0.4-kV electrical grid is presented. Based on the analysis, we propose a simplification of the conventional LCR filter. An inductance of the power grid transformer windings and an impedance of the power distribution lines could be considered as a filter component. Stemming from the above, a simplification of the filter topology is proposed. Only the capacitance component is necessary for realizing a conventional LCR filter. The effectiveness of this simplification is demonstrated through calculations, simulations performed in MATLAB/Simulink, and experimental results on a laboratory prototype.

Keywords: Matrix converter, harmonics, filter

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