Improvement of flux and torque ripple in direct torque control (DTC) of induction motor using improved switching tables

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه آموزشی مهندسی برق؛ دانشگاه ایلام؛ ایلام؛ ایران

2 دانشکده برق دانشگاه شهیدبهشتی تهران، تهران،تهران،ایران

3 گروه مهندسی برق، دانشگاه ایلام، ایلام، ایران

چکیده

Direct Torque Control (DTC) is one of the novel methods of the induction motor control in which the torque generated by the induction motor is controlled directly by the inverter switching modes. The direct torque control method has advantages than other induction motor control methods, which include: 1- Non-use of current controllers 2- Remove rotor positioning sensors 3- Quick torque response 4- Lack of dependence on some parameters of the induction motor and 5- lack of need to control any axis of the motor. Due to these features, this method has become one of the popular methods of the induction motor control in industry. But it still has some disadvantages, such as a high ripple in the curves of electromagnetic torque and stator flux, as well as the inappropriate performance at low engine speeds. In this paper, various strategies for direct torque control of the induction motor have been investigated and an improved switching table has been proposed as well as a switching table with 12 regions that are compared with other methods and results indicate that the direct torque control strategy using 12 regions, improves the flux and torque ripple to a satisfactory level. The simulation was performed in Simulink/ Matlab and the results are presented in the simulation section

کلیدواژه‌ها


عنوان مقاله [English]

Improvement of flux and torque ripple in direct torque control (DTC) of induction motor using improved switching tables

نویسندگان [English]

  • Rahmat Aazami 1
  • Saman Esmaeilbeigi 2
  • Mohammadamin Shirkhani 3
1 Department of Electrical Engineering; Ilam University; Ilam; Iran
2 Department of Electrical Engineering, Shahid Beheshti University of Tehran, Tehran, Tehran, Iran
3 Department of Electrical Engineering, Ilam University, Ilam, Iran
چکیده [English]

Direct Torque Control (DTC) is one of the novel methods of the induction motor control in which the torque generated by the induction motor is controlled directly by the inverter switching modes. The direct torque control method has advantages than other induction motor control methods, which include: 1- Non-use of current controllers 2- Remove rotor positioning sensors 3- Quick torque response 4- Lack of dependence on some parameters of the induction motor and 5- lack of need to control any axis of the motor. Due to these features, this method has become one of the popular methods of the induction motor control in industry. But it still has some disadvantages, such as a high ripple in the curves of electromagnetic torque and stator flux, as well as the inappropriate performance at low engine speeds. In this paper, various strategies for direct torque control of the induction motor have been investigated and an improved switching table has been proposed as well as a switching table with 12 regions that are compared with other methods and results indicate that the direct torque control strategy using 12 regions, improves the flux and torque ripple to a satisfactory level. The simulation was performed in Simulink/ Matlab and the results are presented in the simulation section

کلیدواژه‌ها [English]

  • Direct Torque Control (DTC)
  • Squirrel cage induction motor control
  • flux and torque ripp
  • Induction Motor
  • Switching Table