الفهرس 
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Abstract
Power electronic systems are considered as one of the most important components in many applications, such as nuclear reactors, aerospace, military applications, In such applications the system should be high reliable.
In this thesis a new switching technique for fault tolerant control of induction motor drive is presented, this system firstly detects the fault, isolates the fault and then applies a current regulation technique to make the system operating in two phase mode with the same performance of three phase mode. Also, a new switching technique for direct torque control fault tolerant induction motor drive is presented.