Mega-Stability and Transient Chaos Analysis of Brushless DC Motor with Winding Heat Loss

The parameters of stator winding of brushless DC motor will change under the influence of temperature. The model of brushless DC motor with temperature-affected winding is established, and the influence of steady-state temperature on the motor system under different heat dissipation conditions is investigated, and its dynamic characteristics are also explored. The stability of brushless DC motor is observed by using basin stability. For some parameters, the system can exhibit point attractors, the mega-stability of multiple nested periodic rings and chaos phenomena. By means of mathematical statistics and function fitting, the transient chaotic phenomena of the system under some parameters are examined.