Design and Characteristics of a Rotor Flux Controlled High Speed Induction Motor Drive Applying Two-Level and Three-Level NPC Voltage Source Converters

This paper describes the field oriented control of a high speed induction motor (HSIM) and the design of a two-level voltage source converter (2L-VSC) and a three-level neutral point clamped voltage source converter (3L-NPC VSC) for a 420 V low voltage high speed drive. The proposed control system and both converters are simulated to determine the drive performance under two different operating conditions. Finally, current harmonics, torque ripples, and inverter losses for two different carrier frequencies of the considered converters are presented and compared in detail