Open AccessAn Enhanced Fault Tolerant Control Against Current Sensor Failures in Induction Motor Drive by Applying Space Vector
Author(s) -
Cuong Dinh Tran,
Pavel Brandštetter,
Minh Chau Huu Nguyen,
Sang Ho,
Phuong Nhat Pham,
Bach Hoang Dinh
Publication year - 2020
Publication title -
journal of advanced engineering and computation
Language(s) - English
Resource type - Journals
ISSN - 2588-123X
DOI - 10.25073/jaec.202041.269
Subject(s) - control theory (sociology) , vector control , stator , current sensor , current (fluid) , fault tolerance , induction motor , computer science , observer (physics) , fault (geology) , control reconfiguration , matlab , torque , control engineering , engineering , control (management) , physics , electrical engineering , artificial intelligence , voltage , distributed computing , quantum mechanics , seismology , geology , thermodynamics , embedded system , operating system
In this paper, an enhanced active fault-tolerant control (FTC) is proposed to solve a current sensor failure in the induction motor drive (IMD) using two current sensors. The proposed FTC method applies only one observer to diagnose the faults and recon gure the control signals by the space stator current. The diagnosis function is made up of a comparison algorithm between the measured current space vector and the estimated space vector. Then, incorrect feedback stator currents are replaced by the estimated values in the recon guration function. The amplitude of a healthy measured current is applied to adjusted the accuracy of estimated current signals. The IMD uses the eld-oriented control (FOC) technique to control the speed and torque. The e ectiveness in stabilizing the IMD system when a current sensor error occurs is veri ed by various simulations in the Matlab-Simulink environment.
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