Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2758

Full Length Research Paper

DTC torque ripple minimization based on PSO-PID controller

  Hassan Farhan Rashag1, S. P. Koh1, Ahmed N. Abdalla2*, Nadia M. L. Tan3, K. H. Chong1 and S. K. Tiong1        
  1Department of Electronics and Communication Engineering, Universiti Tenaga Nasional, Selangor 43000, Malaysia. 2Faculty of Electrical and Electronic Engineering, University Malaysia Pahang, Pekan 26600, Malaysia. 3Department of Electrical Power Engineering, Universiti Tenaga Nasional, Selangor 43000, Malaysia.
Email: [email protected]

  •  Accepted: 11 March 2012
  •  Published: 30 April 2012



In conventional direct torque controlled (DTC) induction motor drive, there is usually undesired torque and flux ripple. The given torque is the speed output regulator; therefore, it necessary continues tuning for adjusting parameters Kp, Ki. In conventional proportional- integral (PI) speed controller, the performance of motor may differ over time that may cause unexpected torque disturbances, causing sluggishness of a control system. Tuning PID parameters are essential to DTC system to improve the performance of the system at a low speeds. In this paper particle swarm optimization (PSO) proposed to correct the parameters (Kp, Ki) of a speed controller in order to minimize torque ripple, flux ripple, and stator current distortion. Firstly, introduce brief description for conventional DTC design and PSO. Secondly, close loop speed controller in DTC for induction motor using PSO technique to provide high performance of accuracy. Finally, simulation results demonstrate that a reduction of torque and flux ripples is achieved in a whole speed range.


Key words: Particle swarm optimization, PID controller, direct torque control.