Title: A comparative study of universal fuzzy logic and PI speed controllers for four switch BLDC motor drive
Authors: K.S. Krishna Veni; N. Senthil Kumar; C. Senthil Kumar
Addresses: Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, India ' Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, India ' Department of Electrical and Electronics Engineering, AAA College of Engineering and Technology, Sivakasi, Tamilnadu, India
Abstract: This paper presents a comparison of PI controller and fuzzy controller for speed control of a low cost brushless DC (BLDC) motor drive used in variable speed drive applications. The cost reduction in BLDC drive system is achieved by the reduction of power semiconductor switches. A PI controller and universal fuzzy controller are designed for the speed control and tested by simulation for various conditions. The simulation is performed by using MATLAB Simulink toolbox and the results show the effective response of the fuzzy controller. The rise time and steady state error of fuzzy controller is improved on an average of about 26% and 55% respectively compared to the conventional PI controller.
Keywords: four switch drive; BLDC motor; switching sequence; PI controller; fuzzy controller.
International Journal of Power Electronics, 2019 Vol.10 No.1/2, pp.18 - 32
Received: 22 May 2017
Accepted: 18 Aug 2017
Published online: 07 Nov 2018 *