INSTANTANEOUS TORQUE CONTROL OF ELECTRIC MOTOR DRIVES.

Some of the fundamental principles of instantaneous torque control are developed for the switched reluctance motor. This motor is used as an example because, like the brushless dc permanent-magnet motor with concentrated windings, it has the potential for rapid response, but it can have appreciable torque ripple with unfavorable firing angles. A reference frame transformation that would eliminate the rotor position from the voltage and torque equations is not known for either of these machines. This opens up a number of interesting questions as to the generality of instantaneous torque control algorithms, and whether they can be incorporated into the general or unified theory of electrical machines.