مشخصات پژوهش

MTHD of output line voltage waveform in multilevel inverters is discussed in this paper. With MTHD the DC link values are set to predefined values and also the optimum switching angles are found, in order to reduce voltage THD and simultaneously generate the aimed fundamental component. In this study a method is given to find the optimum solutions using COA associated with ANNs trained with ICA. The nearest solutions provided by COA obtain a smooth data set that is desired for the ANNs training. In this study minimization of THD for constant and alterable DC sources is presented. To present the validity of the proposed approach, simulation and experimental results are provided for a test case 7-level multilevel inverter.