Direct Torque Control of Permanent Magnet Synchronous Motors

Permanent Magnet Synchronous Motors (PMSM) are widely adopted in various applications due to their high efficiency, low noise, minimal vibration, and exceptional reliability. Through Direct Torque Control (DTC) technology, we can achieve superior control over PMSM speed and torque, thereby enhancing operational efficiency and dynamic response. The DTC implementation typically involves torque and stator flux estimators, hysteresis comparators, and optimal switching table selection algorithms. This technique is compatible with MATLAB version 7.0 and above, where Simulink models can demonstrate real-time torque and flux control using Clarke transformations and voltage vector selection logic. The method finds extensive applications across industrial domains including machine tools, wind power generation, rail transportation, and electric vehicles, where MATLAB/Simulink simulations enable system validation through flux observer algorithms and torque ripple optimization techniques.