The DTC of PMSM is a kind of self control mode for its stator flux linkage and torque .It is very important that if stator flux linkage can be observed well and because the accuracy of the observer for stator flux linkage directly affects the performance of the DTC system of PMSM.
Mudili, Anusha and Devendra, P.
"Direct Torque Control Of Permanent Magnet Synchronous Motor,"
International Journal of Power System Operation and Energy Management: Vol. 1
, Article 8.
Available at: https://www.interscience.in/ijpsoem/vol1/iss1/8