Research of regenerative braking of permanent magnet motor used in explosion-proof electric driving trackless rubber-tyred vehicle

Taking explosion-proof electric driving trackless rubber-tyred vehicle as study object, regenerative braking method and braking microstate of permanent magnet brushless DC traction motor driven by three-phase bridge inverter was analyzed, and the regenerative braking control strategy was put forward. The control strategy adopts PWM chopper regulator method, and can distribute time of wheeling and charging of each PWM cycle through closed loop PI, so as to achieve regenerative braking. The simulation results show that the control strategy is safe and reliable, can effectively realize energy recovery, and improve the energy efficiency of vehicles. When the rotating speed of vehicle driving motor is reduced to about 300 r/min, the vehicle kinetic energy has been significantly reduced, and the energy recovery is noneffective. The conclusion has great significance to opening design of regenerative braking pedal of the explosion-proof electric driving trackless rubber-tyred vehicle.