A PC-based hardware and software design for a direct torque and flux controlled induction motor drive system

In this paper the direct torque and flux control method for control of speed and torque of a three phase induction motor has been proposed using a PC-based real time control algorithm. This type of an industrial drive can have two distinct advantages: (i) enhanced flexibility i.e. only a high speed data-acquisition card and the real time control software are needed to retrofit another drive having similar hardware components; and (ii) only the inverter circuit needs to be fabricated, the switching status of which is provided by the control software.