A new approach to conventional direct torque control and DTC-space vector modulation scheme for three-phase induction motor

• Main Authors: Verma, Sony, Gupta, A. K., Kumar, Anil
• Format: Conference Proceeding
• Language: English
• Subjects: Algorithms; Brushless motors; Comparators; Control systems; Hysteresis; Induction motors; Inverters; Ripples; Space vector modulation; Switching; Torque
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0207330

To format Due to well-known features such as brushless designs, low costs, and reliable performance, The uses for induction motors are numerous. In recent years, many different control systems for induction motors have been created, and direct torque control has risen to prominence because of its simple control architecture and rapid dynamic torque responses. On the other hand, the direct torque control approach still has several disadvantages over other control systems; the most significant is the excessive torque ripple fresh approach that has been devised with space vector modulation. There are two hysteresis comparators discovered in a standard DTC drive. The DTC algorithm uses instant data to calculate the gate signals for operating or initialization for inverter. This uses average values, whereas the inverter switching signals use switching signals (notified by Sa, Sb, and Sc) are computed by this technique. High torque ripple and fluctuating switching frequency plague DTC drives using hysteresis comparators. The space vector, dependent on the reference torque and flux, is the most typical solution to these difficulties. A comparison of DTC and SVM-DTC is made in this work. Matlab-Simulink simulations with various techniques and no hysteresis band were compared. The torque and current ripple performances of the two control systems are compared.