Design of simulation teaching platform for brushless DC motor control experiment
Aiming at the problems of uneven switching loss,large total switching loss,complex control and high cost caused by the existing modulation methods in the brushless DC motor control experiment,a new alternating single-cut modulation method is proposed.By alternating single cutting the upper and lower tubes every 360° electrical angle cycle,the loss of the upper and lower tubes can be consist-ent,the total loss is small and the control is simple.And MATLAB/Simulink software is used to estab-lish the simulation model of the brushless DC motor speed and current double closed-loop control sys-tem based on the traditional single-cut modulation mode and the alternating single-cut modulation mode respectively.MATLAB/GUI software is used to develop the visual virtual simulation experiment teaching platform of the control system under the two modulation modes.The simulation results show the effectiveness of the new alternating single-cut method and the practicability of the teaching plat-form,which not only satisfies the development of experimental teaching,but also guides the students'innovative thinking.
brushless DC motorswitching lossalternating single-cutsimulation teaching
万方数据
维普
