In drive operation, the speed can be controlled indirectly by controlling the Voltage Source inverter. The speed is controlled by fuzzy logic controller whose output is the inner dc Voltage controller. The Voltage is controlled by varying the dc voltage. The drive performance of voltage source controller is improved by employing two sets of fuzzy logic controllers. From Fig 5 one set of fuzzy logic controller is used in the inner loop for controlling the torque of the motor which is proportional to DC link current Idc, and another set is used in the outer loop for controlling the actual motor speed.