Direct Torque Control (DTC) Implementation for Five-Phase Induction Motors

This paper explores the study and implementation of the widely recognized Direct Torque Control (DTC) applied to a five-phase induction motor fed by a two-level, five-phase voltage source inverter. Five-phase systems offer significant advantages over traditional three-phase counterparts, such as enhanced fault tolerance, higher torque density, and reduced harmonic distortion, making them ideal for high-performance applications. DTC is a direct control method that eliminates the need for a voltage modulator, enabling precise and efficient control of the motor. The DTC scheme is designed and evaluated through experimental testing, focusing on key electromagnetic and electrical parameters, such as speed reference tracking, torque ripple, and current harmonics, under dynamic and steady-state conditions. The results highlight DTC’s ability to achieve superior control accuracy and robustness across various operating conditions, providing valuable insights for adapting and optimizing control strategies traditionally effective in three-phase systems for application in multiphase motor systems.