Comparison of DTFC and vector control techniques for PMSM drive with loss minimization approach

This paper provides a comparison between direct torque-flux control (DTFC) and vector control (VC) techniques for salient type permanent magnet synchronous motor (PMSM) drive in the context of loss minimization and dynamic responses. The same model based loss minimization algorithm (LMA) is utilized with both DTFC and VC based PMSM drives to compare their efficiency performances. It is found from simulation results that the LMA based DTFC provides better efficiency than that of LMA based VC technique. On the other hand, the VC technique provides better dynamic response than that of DTFC based PMSM drive.