A Research And Design Of Permanent Magnet Motor Controller For Monorail Transportation System In Coal Mine

The thesis is proposed in the background of the battery monorail transport system project of UROCA Precision Information Mining Ltd.A motor controller suitable for battery monorail crane locomotives is designed in this thesis.The motor controller uses vector control as the total control scheme which contains the vector control implementation methods,the research of speed and current regulation,position signal acquired methods.In terms of hardware in this design,the DSP chip TMS320F28335 is used as the main control chip and the intelligent power module MIG150Q6CMB1X is used as the core device of the controller inverter module.At the same time,the protection circuit is integrated in MIG150Q6CMB1X.When some errors occur in the system,the fault signal enable TMS320F28335 blockade the PWM outputting to protect the motor.Also the thesis designs the voltage and current sampling circuits,motor position signal acquisition circuits,communication circuits,power circuits and other circuits.In terms of software,A/D conversion is performed on the voltage and current sampling values.The converted quantities are subjected to coordinate transformation,PID adjustment,and space vector modulation to realize vector control.At the same time,the vector control of permanent magnet synchronous motor and the sensorless motor control system are simulated under Matlab/Simulink.The thesis carries out the test of the torque,speed and protection function of the motor controller.The controller can realize double closed-loop control of speed and current more precisely.It has small torque ripple,speeds smoothly and applicable and propagable.