Performance Improvement in Sensorless Vector Control of IM using Bus Clamped PWM

This paper describes a model-based method for estimating the speed of an induction motor drive that does not have a speed sensor. Because of its less complicated implementation technique, the model-based approach is extensively employed. Vector Controlled Induction with No Sensors To get good dynamic performance, motor control is used. Studies on inverter switching techniques led to the creation of a bus clamped space vector modulation scheme, which has a direct impact on the performance of induction motor drives, particularly in sensorless applications. The modulation technique reduces motor current distortions, pulsation in torque, inverter losses and harmonics in the inverter thus, improvising the performance of the drive. Simulation analysis is performed on MATLAB platform and the results obtained prove the efficacy of Model based speed estimator and Bus Clamped Modulation analogy.