The Comparison of Direct and Indirect Matrix Converters

In this paper are presented control methods and results of selected types of di- rect and indirect converters analysis and main output and input characteristic parameters are compared. The criterions for our comparison were the quality of wave forms and the quality and form of output current. By the comparison was also evaluated complexity of the converter circuits, its commutation and control strategy. This contribution summarizes results of some sim- ulations and measurements that refer to conclusion that the special types of matrix converters have characteristics fully comparable with the conventional indirect frequency converters.