COMPARISON BETWEEN DTC USING TWO-LEVEL INVERTERS AND THREE LEVEL INVERTERS OF INDUCTION MOTOR

WhatsApp or info The three-level inverters present a big interest in the field of the high voltages and the high powers of the fact that they introduce less distortion and weak losses with relatively low switching frequency. Also, the use of three-level inverter associated with DTC control can contribute to more reducing harmonics and the ripple torque and have a high level of output voltage. In that case, the space of voltages is subdivided into twelve sectors (instead of six with the classic DTC) and by considering the method of the virtual vectors, three sections with small, medium and large vectors can be exploited.

This design work is based on comparisons of Direct Torque Control (DTC) applied for induction motor using two-level voltage inverters and three level voltage inverters, and to demonstrate the advantages of using three level inverters type NPC. The regulation speed of the motor is realized by a corrector PI. The effectiveness of this approach is shown by simulation results using Matlab /Simulink.

Reference Paper: Comparison between DTC using a two-level inverters and DTC using a three-level inverter of Induction Motor

Author’s Name: Lahcen Ouboubker, Mohamed Khafallah, Jawad Lamterkati, and Khalid Chikh

Source: IEEE

Year: 2014

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