The matrix converter system is competitive solution toreplace the conventional two stage ac to ac converter. In thispaper, a matrix converter driving a speed-controlled inductionmachine is examined under open-switch fault. First, a-predictivedirect torque method is proposed using only the motor torqueand current. Second, a motor speed control is presented. Theproposed techniques do not require the additional hardwaredevices or circuit modifications to the matrix converter. Theresults of this paper show that the proposing method canmaintain the motor speed with a minimum ripple content—afivefold improvement over the uncompensated system.
展开▼
