Direct torque control (DTC) is one of the most excellent control strategies of torque control in induction machine. It is considered as an alternative to the field oriented control (FOC) or vector control technique. These two control strategies are different on the operation principle but their objectives are the same. They aim to control effectively the torque and flux. Torque control of an induction machine based on DTC strategy has been developed and a comprehensive study is present in this project. In the paper, a novel technique for the direct torque control (DTC) of an induction motor is proposed, which overcomes the trouble of high torque ripple afflicting the conventional DTC technique. With the novel technique, the inverter voltage vector selected from the switching table is applied for the time interval needed by the torque to reach the upper (or the lower) limit of the band, where the time interval is calculated from a suitable modeling of the torque dynamic By this approach, the control system emulates the operation of a torque hysteresis controller of analog type since the application time of the inverter voltage vector is dictated by the allowed torque excursion and not by the sampling period. In this project we are use three techniques.


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    Title :

    COMPARISON OF DIRECT TORQUE CONTROL, BAND CONSTRAINED AND PREDICTION TECHNIQUES OF A 3-Ø INDUCTION MOTOR


    Contributors:
    Amrutha, P (author) / Sekhar, M. (author)

    Publication date :

    2014-03-29


    Remarks:

    IJITR; Vol 2, No 2 (2014): February - March 2014; 827-831


    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    600 / 629




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