Amirkabir University of Technology AUT Journal of Electrical Engineering 2588-2910 44 2 2012 10 01 Optimum Design of BrushLess DC Motor with Minimum Torque Pulsation using FEM & PSO Optimum Design of BrushLess DC Motor with Minimum Torque Pulsation using FEM & PSO 59 70 360 10.22060/eej.2012.360 EN Mojtaba Pourjafari M.Sc. Student, Department of Engineering, University of Guilan, Rasht, Iran Esmael Fallah Choolabi Assistant Professor, Department of Engineering, University of Guilan, Rasht, Iran 0000-0001-5738-5448 Mehrdad Jafar Bolan Associated Professor, Department of Electrical Engineering, Malek Ashtar University of Technology, Shahin shahr, Iran Journal Article 2013 11 27 Despite many advantages of BrushLess DC motor, torque pulsation is one of the most important disadvantages of it. At first, an optimum primary design of BLDC motor is done using PSO algorithm. Then, other parameters for reducing the torque pulsation are considered by finite element method. It is shown that fractional slot structure has many advantages than conventional one. Both cogging and ripple torque have been reduced for fractional structure. In the next steps, other important torque pulsation parameters, such as magnet embrace, offset and skew are considered. Proper embrace, skew and offset are achieved for reducing torque pulsation by nonlinear finite-element analysis. https://eej.aut.ac.ir/article_360_e7b24b112a44fdd9ee93bdf998c6ca0e.pdf