Behavior of a matrix converter with a feed back control in an input side

This paper discusses about characteristics of a matrix converter where a current feedback is applied to the input side. When the impedance of the power grid is high, such as a generator, the control stability of the matrix converter will be deteriorated. One of the solutions to this problem is to apply an input current stability control that is proposed. However, the efficiency of the generator will decrease at light load and heavy load. In this paper, the behavior of the input current control is analyzed, then the vector control is applied to the input side in order to obtain a stable operation and the maximum efficiency according to the pole position of the generator. This study confirms the validity of the vector control for the matrix converter input side with experimental results. The input current THD 2.8% is obtained under a RL load.