Báo Cáo Model reference adaptive system (mras) based sensorless control of induction motor

Abstract
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The operation of speed controlled ac drives without mechanical speed or position sensors
requires the estimation of internal state variables of the machine. The assessment is based
exclusively on the stability and capability to compensate machine parameters during operation of
motor. This paper gives one of the best method to design the drive without speed sensor, MRAS,
which estimates speed and compensate machine parameters. Depending on requisition or working
condition of the drives, each machine parameter has been monitored and compensated case by case.
Stator resistance, Rs, has been compensated in this paper. Beside that, MRAS helps sensorless
system work well incase the feedback variables have transition error.