Performance Analysis of Fault Tolerant Operation of PMSM using Direct Torque Control and Fuzzy Logic Control

Electromagnets have traditionally been used in all drives. Because they take up space, the size of machine grows tandem with increased torque and it’s rating thereby lowering its energy efficiency. If rotor winding is replaced permanent magnets, motor will reverse. The recent improvement magnetic materials resulted a reduction more effective use redial space. Permanent Magnet Synchronous Motors (PMSM) high-power factor, are extremely durable, require almost no maintenance. Such motors can be designed power ranging from few watts to kilowatts for applications fans alternators including electric vehicles. This need reliable safe operation drives which would fault tolerant. study compares tolerant controllers using Direct Torque Control (DTC), Fuzzy Logic (FLC) PMSM stator fault. Simulations performed different voltages loads under DTC selects voltage vectors hysteresis controller gives better speed regulation but increases ripple requiring an accurate mathematical model. FLC similar performance by precise vector selection without needing model has lower regulation. results show that even failure function satisfactorily