Theoretical and Experimental Analysis ofthe

In thispapera generalapproachforthe determination ofthelinecurrentharmoniccontent in matrix converters ispresented. Theinput disturbances, such asvoltage unbalance andvoltage harmonics, areconsidered asperturbations ofthefundamental component, anda small-signal analysis isusedtodetermine thespectrum of thelinecurrent. Theproposed analytical approach hasa general validity, because ittakes intoaccount theeffects of theline andfilter impedance, thesupply harmonics andthe input current modulation strategy aswell. Hence, itcould be usefully employed toevaluate theline current quality inthe point ofcommoncoupling fordifferent filter topologies and supplydistortions. Experimental results aregivento confirm theanalytical solution.