L. Zhong

TL;DR: In this paper, direct torque control (DTC) for permanent magnet synchronous motor (PMSM) drives has been investigated, and it is proved that the increase of electromagnetic torque in a permanent magnet motor is proportional to the angle between the stator and rotor flux linkages, and therefore the fast torque response can be obtained by adjusting the rotating speed of the stators flux linkage as fast as possible.

TL;DR: A modified direct torque control (DTC) scheme for interior permanent magnet synchronous machine (IPMSM) is investigated in this article, which features in very low flux and torque ripple and almost fixed switching frequency.

TL;DR: A novel direct torque control (DTC) scheme for interior permanent magnet synchronous machine is proposed in this paper, which features low torque and flux ripple and almost fixed switching frequency.

TL;DR: Problems associated with the implementation of a direct torque control strategy for an interior permanent-magnet synchronous motor drive, namely, the offset in the current measurements, the stator resistance variation, and the requirement of initial rotor position are addressed.

TL;DR: It is shown that including the torque angle in the estimation process results in a far more accurate transient speed estimator than what is reported in the existing literature.