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FPGA based high precision torque and flux estimator of direct torque control drives

This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two"s complement fixed-point format approach to minimize calculation errors and th...

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Main Authors: Sutikno, T., Nik Idris, Nik Rumzi, Jidin, A. Z., Daud, Mohd. Zaki
Format: Book Section
Published: IEEE Explorer 2011
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utm.my/id/eprint/29713/
http://dx.doi.org/10.1109/IAPEC.2011.5779871
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spelling my.utm.297132017-02-05T00:05:21Z http://eprints.utm.my/id/eprint/29713/ FPGA based high precision torque and flux estimator of direct torque control drives Sutikno, T. Nik Idris, Nik Rumzi Jidin, A. Z. Daud, Mohd. Zaki TK Electrical engineering. Electronics Nuclear engineering This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two"s complement fixed-point format approach to minimize calculation errors and the hardware resources usage in all operations, 2) calculating the discrete integration operation of stator flux using backward Euler approach, 3) modifying the non-restoring method to calculate complicated square root operation of stator flux, 4) introducing a new sector judgment method, and 5) reducing the sampling frequency down to 5µs. To avoid saturation due to DC offset present in the sensed currents, the LP Filter is applied. The simulation results of DTC model in MATLAB/Simulink, which performed double-precision calculations, are used as references to digital computations executed in FPGA implementation. The Hardware-in-the-loop (HIL) method is used to verify the minimal error between MATLAB/Simulink simulation and the experimental results, and thus the well functionality of the implemented estimators. IEEE Explorer 2011 Book Section PeerReviewed Sutikno, T. and Nik Idris, Nik Rumzi and Jidin, A. Z. and Daud, Mohd. Zaki (2011) FPGA based high precision torque and flux estimator of direct torque control drives. In: 2011 IEEE Applied Power Electronics Colloquium, IAPEC 2011. IEEE Explorer, USA, pp. 122-127. ISBN 978-145770008-8 http://dx.doi.org/10.1109/IAPEC.2011.5779871 10.1109/IAPEC.2011.5779871
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Sutikno, T.
Nik Idris, Nik Rumzi
Jidin, A. Z.
Daud, Mohd. Zaki
FPGA based high precision torque and flux estimator of direct torque control drives
description This paper presents an improved FPGA-based torque and stator flux estimators for direct torque control (DTC) induction motor drives, which permit very fast calculations. The improvements are performed by 1) using two"s complement fixed-point format approach to minimize calculation errors and the hardware resources usage in all operations, 2) calculating the discrete integration operation of stator flux using backward Euler approach, 3) modifying the non-restoring method to calculate complicated square root operation of stator flux, 4) introducing a new sector judgment method, and 5) reducing the sampling frequency down to 5µs. To avoid saturation due to DC offset present in the sensed currents, the LP Filter is applied. The simulation results of DTC model in MATLAB/Simulink, which performed double-precision calculations, are used as references to digital computations executed in FPGA implementation. The Hardware-in-the-loop (HIL) method is used to verify the minimal error between MATLAB/Simulink simulation and the experimental results, and thus the well functionality of the implemented estimators.
format Book Section
author Sutikno, T.
Nik Idris, Nik Rumzi
Jidin, A. Z.
Daud, Mohd. Zaki
author_facet Sutikno, T.
Nik Idris, Nik Rumzi
Jidin, A. Z.
Daud, Mohd. Zaki
author_sort Sutikno, T.
title FPGA based high precision torque and flux estimator of direct torque control drives
title_short FPGA based high precision torque and flux estimator of direct torque control drives
title_full FPGA based high precision torque and flux estimator of direct torque control drives
title_fullStr FPGA based high precision torque and flux estimator of direct torque control drives
title_full_unstemmed FPGA based high precision torque and flux estimator of direct torque control drives
title_sort fpga based high precision torque and flux estimator of direct torque control drives
publisher IEEE Explorer
publishDate 2011
url http://eprints.utm.my/id/eprint/29713/
http://dx.doi.org/10.1109/IAPEC.2011.5779871
_version_ 1643648359426162688
score 13.211869

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