Estimation of Stator Resistance in Direct Torque Control Synchronous Motor Drives | IEEE Journals & Magazine | IEEE Xplore

Estimation of Stator Resistance in Direct Torque Control Synchronous Motor Drives


Abstract:

Direct torque control (DTC) is a high-performance method that provides effective control of stator flux modulus and electromagnetic torque of electric motors. However, er...Show More

Abstract:

Direct torque control (DTC) is a high-performance method that provides effective control of stator flux modulus and electromagnetic torque of electric motors. However, error in estimation of stator resistance significantly degrades the performance of a DTC drive system, especially for a synchronous motor. This paper discusses the problems associated with the error in stator resistance and proposes an analytical approach to investigate its effect on the actual and estimated variables of a synchronous motor. Based on how this error affects the estimated angle between the stator flux and current vectors, a method to track stator resistance variations is proposed. The presented analytical method and the proposed stator resistance estimation are validated using simulation and experimental case studies.
Published in: IEEE Transactions on Energy Conversion ( Volume: 30, Issue: 2, June 2015)
Page(s): 626 - 634
Date of Publication: 26 November 2014

ISSN Information:

Author image of Younes Sangsefidi
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Younes Sangsefidi (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, applications of power electron...Show More
Younes Sangsefidi (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, applications of power electron...View more
Author image of Saleh Ziaeinejad
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Saleh Ziaeinejad (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, electrical machines and drives,...Show More
Saleh Ziaeinejad (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, electrical machines and drives,...View more
Author image of Ali Mehrizi-Sani
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Ali Mehrizi-Sani (S'05–GS'08–M'11) received the B.Sc. degrees in electrical engineering and petroleum engineering from the Sharif University of Technology, Tehran, Iran, both in 2005; the M.Sc. degree in electrical engineering from the University of Manitoba, Winnipeg, MB, Canada, in 2007; and the Ph.D. degree in electrical engineering from the University of Toronto, Toronto, ON, Canada, in 2011.
He is currently an Ass...Show More
Ali Mehrizi-Sani (S'05–GS'08–M'11) received the B.Sc. degrees in electrical engineering and petroleum engineering from the Sharif University of Technology, Tehran, Iran, both in 2005; the M.Sc. degree in electrical engineering from the University of Manitoba, Winnipeg, MB, Canada, in 2007; and the Ph.D. degree in electrical engineering from the University of Toronto, Toronto, ON, Canada, in 2011.
He is currently an Ass...View more
Author image of Hamidreza Pairodin-Nabi
Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
Hamidreza Pairodin Nabi was born in Tehran, Iran, in 1986. He received the M.Sc. degree in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2011, where he is currently working toward the Ph.D. degree.
His research interests include modeling, design, and control of power electronic converters, motor drive systems, and multiphase variable-speed motor drives.
Hamidreza Pairodin Nabi was born in Tehran, Iran, in 1986. He received the M.Sc. degree in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2011, where he is currently working toward the Ph.D. degree.
His research interests include modeling, design, and control of power electronic converters, motor drive systems, and multiphase variable-speed motor drives.View more
Author image of Abbas Shoulaie
Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
Abbas Shoulaie was born in Isfahan, Iran, in 1949. He received the B.Sc. degree from the Iran University of Science and Technology (IUST), Tehran, Iran, in 1973, and the M.Sc. and Ph.D. degrees in electrical engineering from Université Sciences et Techniques du Languedoc (U.S.T.L.), Montpellier, France, in 1981 and 1984, respectively.
He is currently a Professor of Electrical Engineering at IUST. His research interests ...Show More
Abbas Shoulaie was born in Isfahan, Iran, in 1949. He received the B.Sc. degree from the Iran University of Science and Technology (IUST), Tehran, Iran, in 1973, and the M.Sc. and Ph.D. degrees in electrical engineering from Université Sciences et Techniques du Languedoc (U.S.T.L.), Montpellier, France, in 1981 and 1984, respectively.
He is currently a Professor of Electrical Engineering at IUST. His research interests ...View more

I. Introduction

As an alternative to conventional vector-controlled synchronous motor drives, direct torque control (DTC)–based drives were proposed in the 1990s [1], [2]. Desirable features such as fast dynamic response, no need for mechanical sensors, simple structure, and less dependence on motor parameters [3] –[5] have made DTC drive systems an attractive option for the industry. DTC provides effective control of stator flux modulus and electromagnetic torque in a synchronous motor. However, one of its main limitations is that a priori knowledge of the stator resistance is required to estimate the stator flux vector and electromagnetic torque. Due to variations in temperature and frequency, stator resistance can vary considerably [3], [6]. A basic DTC synchronous drive with no provisions for correction for stator resistance is unable to track these variations, and consequently, its performance may degrade.

Author image of Younes Sangsefidi
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Younes Sangsefidi (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, applications of power electronics in power system, and motors drives.
Younes Sangsefidi (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, applications of power electronics in power system, and motors drives.View more
Author image of Saleh Ziaeinejad
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Saleh Ziaeinejad (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, electrical machines and drives, and power system applications of power electronics.
Saleh Ziaeinejad (GS'14) received the B.Sc. and M.Sc. degrees in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2009 and 2012, respectively.
He is currently a Graduate Research Assistant at the School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA. His research interests include power electronics, electrical machines and drives, and power system applications of power electronics.View more
Author image of Ali Mehrizi-Sani
School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
Ali Mehrizi-Sani (S'05–GS'08–M'11) received the B.Sc. degrees in electrical engineering and petroleum engineering from the Sharif University of Technology, Tehran, Iran, both in 2005; the M.Sc. degree in electrical engineering from the University of Manitoba, Winnipeg, MB, Canada, in 2007; and the Ph.D. degree in electrical engineering from the University of Toronto, Toronto, ON, Canada, in 2011.
He is currently an Assistant Professor at Washington State University, Pullman, WA, USA. His research interests include power system applications of power electronics and integration of renewable energy resources.
Dr. Mehrizi-Sani is an Editor of the IEEE Transactions on Power Delivery, and a Reviewer for several IEEE transactions and conferences. He is also the Chair of the IEEE Task Force on Dynamic System Equivalents and a contributing member of several other IEEE task forces, including the Task Force on Microgrid Controls, The Task Force on Dynamic Average Modeling, and The Task Force on Interfacing Techniques for Simulation Tools. He is a recipient of the Natural Sciences and Engineering Research Council of Canada (NSERC) Postdoctoral Fellowship in 2011 and was a Connaught Scholar at the University of Toronto. He received the Dennis Woodford Prize for his M.Sc. thesis.
Ali Mehrizi-Sani (S'05–GS'08–M'11) received the B.Sc. degrees in electrical engineering and petroleum engineering from the Sharif University of Technology, Tehran, Iran, both in 2005; the M.Sc. degree in electrical engineering from the University of Manitoba, Winnipeg, MB, Canada, in 2007; and the Ph.D. degree in electrical engineering from the University of Toronto, Toronto, ON, Canada, in 2011.
He is currently an Assistant Professor at Washington State University, Pullman, WA, USA. His research interests include power system applications of power electronics and integration of renewable energy resources.
Dr. Mehrizi-Sani is an Editor of the IEEE Transactions on Power Delivery, and a Reviewer for several IEEE transactions and conferences. He is also the Chair of the IEEE Task Force on Dynamic System Equivalents and a contributing member of several other IEEE task forces, including the Task Force on Microgrid Controls, The Task Force on Dynamic Average Modeling, and The Task Force on Interfacing Techniques for Simulation Tools. He is a recipient of the Natural Sciences and Engineering Research Council of Canada (NSERC) Postdoctoral Fellowship in 2011 and was a Connaught Scholar at the University of Toronto. He received the Dennis Woodford Prize for his M.Sc. thesis.View more
Author image of Hamidreza Pairodin-Nabi
Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
Hamidreza Pairodin Nabi was born in Tehran, Iran, in 1986. He received the M.Sc. degree in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2011, where he is currently working toward the Ph.D. degree.
His research interests include modeling, design, and control of power electronic converters, motor drive systems, and multiphase variable-speed motor drives.
Hamidreza Pairodin Nabi was born in Tehran, Iran, in 1986. He received the M.Sc. degree in electrical engineering from the Iran University of Science and Technology, Tehran, Iran, in 2011, where he is currently working toward the Ph.D. degree.
His research interests include modeling, design, and control of power electronic converters, motor drive systems, and multiphase variable-speed motor drives.View more
Author image of Abbas Shoulaie
Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
Abbas Shoulaie was born in Isfahan, Iran, in 1949. He received the B.Sc. degree from the Iran University of Science and Technology (IUST), Tehran, Iran, in 1973, and the M.Sc. and Ph.D. degrees in electrical engineering from Université Sciences et Techniques du Languedoc (U.S.T.L.), Montpellier, France, in 1981 and 1984, respectively.
He is currently a Professor of Electrical Engineering at IUST. His research interests include power electronics, magnetic systems and linear motors, flexible ac current transmission system, high voltage dc flexible ac current transmission system (FACTS), and high voltage dc (HVDC).
Abbas Shoulaie was born in Isfahan, Iran, in 1949. He received the B.Sc. degree from the Iran University of Science and Technology (IUST), Tehran, Iran, in 1973, and the M.Sc. and Ph.D. degrees in electrical engineering from Université Sciences et Techniques du Languedoc (U.S.T.L.), Montpellier, France, in 1981 and 1984, respectively.
He is currently a Professor of Electrical Engineering at IUST. His research interests include power electronics, magnetic systems and linear motors, flexible ac current transmission system, high voltage dc flexible ac current transmission system (FACTS), and high voltage dc (HVDC).View more
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