Browsing by Author "Maddi, Liza"

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    Direct torque control with space vector modulation of inverter fed permanent magnet synchronous motor
    (2018) Maddi, Liza; Rezki, Amazigh; Metidji, Brahim (Supervisor)
    In recent years, synchronous motors have become widely used in industrial applications. In all low speed ratings, synchronous motors are physically smaller and less costly to build than squirrel-cage induction motors of equivalent horsepower. Moreover, synchronous motors provide higher torque/inertia ratio and higher efficiency. Particularly, Permanent Magnet Synchronous Motors (PMSM) do not have windings on the rotor. So, there is no need for brushes and slip rings what leads to less copper losses, less maintenance and space saving. This thesis presents the Direct Torque Control Space Vector Modulation (DTC-SVM) of PMSM. The implementation
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    Direct torque control with space vector modulation of inverter fed permanent magnet synchronous motor
    (2018) Maddi, Liza; Rezki, Amazigh; Metidji, Brahim (Supervisor)
    In recent years, synchronous motors have become widely used in industrial applications. In all low speed ratings, synchronous motors are physically smaller and less costly to build than squirrel-cage induction motors of equivalent horsepower. Moreover, synchronous motors provide higher torque/inertia ratio and higher efficiency. Particularly, Permanent Magnet Synchronous Motors (PMSM) do not have windings on the rotor. So, there is no need for brushes and slip rings what leads to less copper losses, less maintenance and space saving. This thesis presents the Direct Torque Control Space Vector Modulation (DTC-SVM) of PMSM. The implementation requires a Digital Signal Processor (DSP) to handle the issue of the control of the PMSM. The DTC-SVM is one of the preferred methods for motor drives since it operates at a constant switching frequency. This method is based on the estimation of the motor torque and stator flux, comparing the signal with the two adjustable references and compensate the error signals using a PI controller. The simulation of DTC-SVM model is done using MATLAB/Simulink®. The results are presented to help analyze the system response. The modeling could also be done using fuzzy logic techniques for better results.