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FAULT TOLERANT CONTROL OF INDUCTION MOTOR FED BY THREE PHASE INVERTER

Pages : 11 – 19

E. E. El-Kholy, A. E. Kalas and M. Fawzi

Abstract:

In this paper a new switching technique for Direct Torque Control (DTC) fault tolerant induction motor drive is presented, if one inverter leg is completely lost due to such abnormal condition, this system modifies the switching table of DTC system using the available stator voltage vectors in two phase with Four Switch Three Phase Inverter (FSTPI) topology to track the stator flux reference and directly control the torque and maintain the performance of induction motor as in the Six Switch Three Phase Inverter (SSTPI) mode. An experimental setup has been built in Laboratory using the interface circuit Advenchtech PCI 1711 to test the performance of the proposed method and the experimental results give a good agreement with the simulation results.

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