Simplification of harmonics filter for a matrix converter-based drive

Abstract

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