Direct Torque Control Simulation

This article presents a practical direct torque control (DTC) simulation program designed to enhance understanding of DTC working principles and applications. Direct torque control is an advanced motor control technique that directly regulates motor torque and flux by controlling voltage and current inputs, eliminating the need for traditional PWM-based controllers. The simulation implements key DTC components including hysteresis comparators for torque and flux control, switching table logic for inverter states, and voltage vector selection algorithms. Modern industrial applications widely adopt this technology for driving various motor types including AC induction motors and permanent magnet synchronous motors. The DTC algorithm offers significant advantages such as high efficiency, rapid dynamic response, and precise torque regulation without requiring position sensors. Through this simulation, users can explore different operating conditions and control strategies by modifying parameters like torque reference values, sampling frequencies, and hysteresis band widths. The program structure includes modules for Clarke transformations, flux and torque estimators, and space vector modulation implementation. This simulation serves as an essential learning tool for mastering direct torque control concepts and advancing motor control expertise through hands-on experimentation with control loop tuning and performance analysis under varying load conditions.