Analysis and simulation on commutation force ripple of BLDCLM based on velocity

During the electromagnetic launchers, the Brushless DC linear motor works on the accelerated state, the range of velocity is wide, so the research on the influence of the speed upon the commutation force ripple is very important. The paper establishes the mathematical model of BLCDLM on the consideration of all factors that affects the commutation force ripple. Common formulas of the current, commutation time and force are derived by solving the mathematical model, and the curve of the current is given. Influence of speed and the back-EMF on the force ripple is analyzed in detail. At last, the results of simulation validate the analysis of theory.

[1]  D. K. Lieu,et al.  Reduction of torque ripple in brushless DC motors , 1995 .

[2]  Kwang-Woon Lee,et al.  Commutation torque ripple reduction in a position sensorless brushless DC motor drive , 2006, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[3]  Changliang Xia,et al.  Speed control of brushless DC motor using genetic algorithm based fuzzy controller , 2004, 2004 International Conference on Intelligent Mechatronics and Automation, 2004. Proceedings..

[4]  T. Sebastian,et al.  Torque ripple analysis of a PM brushless DC motor using finite element method , 2004, IEEE Transactions on Energy Conversion.

[5]  A. G. Jack,et al.  Analysis and simulation of the high-speed torque performance of brushless DC motor drives , 1995 .

[6]  Yi Wang,et al.  A novel position-sensorless control method for brushless DC motors , 2011 .