Fig 1.
Block diagram of the traditional MTPA control system.
Fig 2.
Schematic showing the traditional MPCC vector selection procedure.
Fig 3.
Selection of the first voltage vector.
Fig 4.
Schematic of the vectors in the voltage vector selection procedure.
Fig 5.
Selection of the second voltage vector.
Fig 6.
Flowchart of the dual-vector MPCC strategy.
Table 1.
Main parameters of PMSM used in the simulation.
Fig 7.
Rotational speed waveform when the motor starts.
Fig 8.
Torque waveform when the motor starts.
Fig 9.
d-q axis current waveform when the motor starts.
Fig 10.
Rotational speed waveform when the motor is loaded with torque.
Fig 11.
Torque waveform when the motor is loaded with torque.
Fig 12.
D-q axis current waveform when the motor is loaded with torque.
Fig 13.
Rotational speed waveform when the given speed changes.
Fig 14.
Torque waveform when the given speed changes.
Fig 15.
d-q axis current waveform when the given speed changes.
Table 2.
Average current ripple of the three control strategies under different working conditions.