Direct Torque Control Simulink Implementation

In this article, we explore Direct Torque Control (DTC) implementation using Simulink, a powerful method for electric motor control that offers superior accuracy and efficiency. Simulink serves as an essential platform for modeling and analyzing various control systems, including Direct Torque Control. We will demonstrate how to implement DTC in Simulink using key blocks like PWM generators, torque calculators, and flux estimators, while explaining the core algorithm that maintains torque and flux within hysteresis bands through optimal switching table selection. The implementation typically involves creating subsystems for torque computation (using motor current and flux measurements), flux estimation (via voltage model integration), and switching logic that selects appropriate inverter states based on torque and flux errors. We will discuss the advantages of DTC, including fast dynamic response and reduced parameter dependence, along with its applications in industrial drives and electric vehicles. Detailed implementation steps and practical examples will be provided to help readers better understand the technology's simulation setup and real-world applications, including code structure for custom S-function blocks when advanced control modifications are required.