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The paper validated a new Compensating device for Fault Ride Through (FRT) the permanent magnet synchronous motors (PMSM) driving AC Drives used in Electric Vehicle. The electric vehicle utilizes two PMSMs to drive the two front wheels. The battery source is regulated and controlled by a boost type dc-dc converter. The new FRT compensating device is interfaced to the VSI-inverter feeding the PMSM drive motors. Type 2Fuzzy Logic Controller (T2FLC) is utilized in the regulation of the output voltage of the boost dc-dc converter. The unified drive dc-ac scheme is simulated using the Matlab/Simulink software environment. Dynamic simulation of short circuit fault conditions at different parts of the unified drive system. The stator current, the rotor speed, and the electric torque for each PMSM are compared for both short and open circuit faults without and with the compensating device. Digital simulation results validated the effectiveness and fast damping with fast fault-recovery time and supply continuity during short circuit and open circuit faults.

A Fuzzy Logic Fault Ride-Through Scheme for Electric Vehicles Using PMSM -AC Drives