Rotor flux oriented control of a high speed induction motor drive applying a two-level voltage source converter with LC-sine filter

This paper describes the field oriented control of a high speed induction motor (HSIM) with a two-level voltage source converter (2L-VSC) and an LC-filter for a 420 V low voltage high speed drive. The filter design procedure to reduce the torque ripple as well as the low frequency models of LC-filter and a combination of HSIM and LC-filter in rotor flux oriented frame are presented. A modified decoupling circuit and the corresponding current regulator parameters are proposed to improve the dynamic performance of a high speed drive connected to an LC-filter fed by a 2L-VSC. The overall system consisting of HSIM, 2L-VSC, LC-filter and a discrete control system is simulated to study the performance of current and speed control loops