Performance analysis of an improved low harmonic indirect matrix converter for drive system in WECS

Abstract

In this paper a low harmonic indirect matrix converter (IMC) is used to drive an induction motor fan system. The proposed method is modeled to produce a reduced the harmonic level in the load side by controlling the drive system using IMC. The Space Vector PWM (SVPWM) technique is used to control the voltage output of the IMC which is fed to the motor terminals. The SVPWM is voltage orientated control producing pulses for the converter switches. The vector modulation of the pulse generation reduces the losses and the harmonics due to the inductive nature of the load. The system is designed to extend its application to the wind energy conversion system (WECS) using a fixed speed wind turbine, which is mathematically, modeled using the machine equations of the self-excited induction generator (SEIG). The results are obtained using the mathematical modeling of the proposed system in MATLAB Simulink. The experimental verification is demonstrated using a prototype model for a 0.5W system and the results are compared and discussed.