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Author Das, S. ♦ Pal, A. ♦ Kumar, R. ♦ Chattopadhyay, A.K.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2015
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Voltage measurement ♦ Adaptation models ♦ Mathematical model ♦ MATLAB ♦ Sensitivity analysis ♦ Stability analysis ♦ Radio frequency ♦ vector control ♦ Field orientation ♦ induction motor ♦ MRAC ♦ rotor flux ♦ speed sensorless drive ♦ speed estimation ♦ stability ♦ sensitivity
Abstract High quality performance of vector controlled induction motor (IM) drives to a large proportion depends upon the rotor resistance which varies significantly with temperature notably at low speed. Many techniques are proposed till date but, model reference adaptive controller (MRAC) is one of the ace methods among the numerous due to its performance and straightforward stability approach. The rotor flux (RF) -error based MRAC consists of two models, viz. reference and adaptive models used simultaneously to estimate the d-q components of the rotor flux using IM line currents and voltages. However, in the case of conventional RF-MRAC based drive, the accuracy of the measured voltage drastically falls because of the significant amount of voltage drop across the stator resistance in the low speed region. To overcome this limitation, in this paper, the d-q components of the stator voltages are computed using the error signal between the reference and measured d-q current components with Proportional Integral (PI) controllers and representing the relevant equations in the synchronously rotating frame. Hence, instead of using voltage and current sensors, only current sensor is required in the proposed scheme. Thus, the proposed RF-MRAC based drive performs satisfactorily at the low speed as direct dependence on the measured voltage is eliminated. The proposed drive's performance with the RF-MRAC is validated for various speed ranges and patterns, both by Matlab simulation and experimental verification. A stability study in all the four quadrants of drive's operation and sensitivity study against motor parameter variations are carried out in Matlab/ Simulink. Experimental results obtained by a dSPACE-1104 based laboratory prototype are presented in the paper.
Description Author affiliation: Dept. of Electr. Eng., Indian Sch. of Mines, Dhanbad, India (Das, S.; Pal, A.; Kumar, R.) || Dept. of Electr. Eng., Indian Inst. of Eng. Sci. & Technol., Howrah, India (Chattopadhyay, A.K.)
ISBN 9781479986392
ISSN 21593450
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-11-01
Publisher Place China
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781479986415
Size (in Bytes) 2.48 MB
Page Count 6
Starting Page 1
Ending Page 6

Source: IEEE Xplore Digital Library