Compensation strategy of matrix converter fed induction motor drive under input voltage and load disturbances using internal model control

► Mathematical modeling of matrix converter control algorithm is done. ► Dynamic d-q model of the induction motor is created.► Internal Model Control based estimation of controller parameters is done. ► Set point tracking and disturbance rejection of controller is verified.► Comparison of IMC based controller performance with PI controller performance. The Matrix Converter (MC) is well known for its diverse advantages and applications but the output characteristics are adversely affected by the input voltage disturbances because there is no energy storage elements present in the dc link. Hence the matrix converter fed drive performance is affected. In this paper, Internal Model Control (IMC) based controller which is capable of achieving perfect set point tracking and disturbance rejection is proposed for compensating the voltage disturbances and load disturbances of matrix converter fed vector controlled Induction Motor (IM) drives. Modeling of matrix converter with input voltage disturbances and parameter estimation of IMC based speed and current controllers for vector controlled induction motor drive are described in this paper. The simulation results validate the input voltage disturbance rejection and improved dynamic performance of matrix converter fed induction motor drive obtained using IMC based controller.