Braking technique research on high power permanent magnet brushless motor of aviation

For braking problems of high power BLDCM on aviation, with the characteristics of air power supply, this paper respectively studies the change of phase current in dynamic braking and plug breaking. It compares the speed performance of the different braking methods, and proposes using different phase current detection ways for different braking methods and the phase current control method based on current cut-off negative feedback. Finally, the relevant waveforms are simulated in Matlab environment. The simulation results show that the theory is correct and current detection and control methods are very effective.