Inrush Current Suppressor using a Matrix Converter in Wind Power Generation System with Squirrel-cage Induction Machines

Abstract

This paper proposes inrush current suppressor using a matrix converter in wind power generation system with squirrel-cage induction machines. The output side of the matrix converter is connected in series to the induction machine through matching transformers. The reference output voltage of the matrix converter is decided by multiplying the induction machine current with the variable control gain. So the matrix converter is behaves as resistors for inrush current. Digital computer simulation is implemented to confirm the validity and practicability of the proposed inrush current suppressor using PSCAD/EMTDC. Simulation results demonstrate that the proposed inrush current suppressor can suppress the inrush current perfectly.