Research Article

Sensorless Control of Nonsinusoidal Permanent Magnet Brushless Motor Using Selective Torque Harmonic Elimination Control Method Based on Full-Order Sliding Mode Observer

Table 2

Comparison of the relative torque ripple of non-sinusoidal PMBL motor by using various control methods in the final speed.

Control methodTHD of torque

Direct torque control
Quasi-square current control with three-phase current feeding
Vector control
Selective torque harmonic elimination control