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An electric propulsion system is generally based on torque controlled electric drive and DC series motors are traditionally used for propulsion system. Induction machines, which are reliable, low cost and have less maintenance, satisfy the characteristics of the propulsion and reinstating the DC series motor. Field oriented control (FOC) of induction machines can decouple its torque control from field...
The aim of this work is to design an intelligent system for evaluating knowledge level of power plant operators who have completed training program. To build the evaluation system, skilled plant operator performance during fault conditions is simulated through expert system techniques. Rule based expert system developed, stores domain knowledge as set of rules. The system is integrated with Supervisory...
In high speed induction machine drive such as elevator system, 50% to 200% of the torque of the steady state torque is needed to get the required acceleration and deceleration for a short period. Also the machine should generate positive torque as well as negative torque at either direction. Thus the four-quadrant operation in torque-speed plane is necessary in such applications. In a sensorless field...
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