Analysis of the Input Harmonic Current of the Matrix Rectifier and the Design of its Input LC Filter
Applied Mechanics and Materials(2013)
Abstract
As a new type of pulse width modulate converter,the input current of matrix rectifier consists of a great deal of high-frequency harmony current. The harmony has a bad influence on the net side. So a input filter is needed to eliminate it. Through the approach of Fourier transform, the harmony wave of the matrix rectifier is discussed, and the conclusion of the value of high-harmony and the induction in inverse proportion is deduced. The inactive power that the capacitance absorbe determines its value. The range of the resonance frequency determine the range of the induction. From above analysis a basic design of input LC filter of matrix converter is given. The input filter has been verified in the matlab/simulink and good performances are achieved.
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Key words
matrix rectifier,input harmonic current
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