MRAS estimators have become increasingly popular due to their ease of computational usage, flexibility and accurateness in determining the rotor speed of induction motors without speed sensors mounted on the shaft. This paper considers the three most popularly used configurations of MRAS Speed Estimators i.e., Rotor Flux, Back-EMF and Instantaneous Reactive power. The dynamic performance of the same is analyzed for different values of Load torque perturbations and is limited to medium and high speed range only. A mathematical model is presented for each estimator and an equivalent simulink model is built and the results are analyzed and inferences are drawn. © 2014 IEEE.

Febin Daya J L

Electrical

School of Electrical Engineering

Chennai Campus

Krishna S.M

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Dynamic performance analysis of MRAS based speed estimators for speed sensorless induction motor drives

2014 International Conference on Advances in Electronics Computers and Communications

This paper presents a comparison and real-time analysis of sliding mode disturbance observers for speed sensorless induction motor drives. The rotor speed tracking bandwidth and the load rejection capability are improved by altering the profile of the sliding hyperplane used in the state observer. The entire system is built in Simulink environment, and real-time RT-lab blocksets are integrated into the same and tested in a new Processor-in-Loop-based test bench. The Processor-in-Loop test bench uses the OP4500 real-time target and loop back adapters for signal routing. This ensures that there is a real-world signal transfer between the plant and the controller. © Springer Nature Singapore Pte Ltd. 2018.

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Journal	Data powered by Typeset2014 International Conference on Advances in Electronics Computers and Communications
Publisher	Data powered by TypesetIEEE
Open Access	0