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Comparative analysis of sensor-less speed control of three phase induction motor

This paper presents the comparative analysis on Sensor-less speed control of Three Phase Induction motor. This technique uses a reference speed measured from speed sensor connected to the shaft and the sensor less speed measured from the current sensor. Further difference between the reference speed and sensor less speed is measured, it is analysed that the error between them can be minimised by using on different platform like MRAS, FOC, ANN, Fuzzy, Neuro Fuzzy etc. The advantages of sensor-less scheme are reduced hardware complexity, reduced size of the machine, cost, improved noise immunity, higher reliability and reduction in maintenance requirements. The operation of induction motor in hostile environments mostly requires mechanism which is not having a speed sensor. This paper will help in estimating the speed of three phase induction motor without using any physical tachometer on the different platform.