The Experts below are selected from a list of 53943 Experts worldwide ranked by ideXlab platform
Hossam Abdel Fattah - One of the best experts on this subject based on the ideXlab platform.
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Passivity-based torque and flux tracking for induction motors with Magnetic Saturation
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000Co-Authors: Hossam Abdel Fattah, Kenneth A. LoparoAbstract:An observer-based, globally asymptotically stable torque and rotor flux magnitude tracking controller for induction motors under Magnetic Saturation is proposed. Simulation results are provided.
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Input-output linearization of induction motors with Magnetic Saturation
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000Co-Authors: Hossam Abdel FattahAbstract:The problem of controlling induction motors with Magnetic Saturation is addressed from an input-output feedback linearization perspective. The induction motor /spl pi/-model is considered. A input-output feedback linearizing controller is developed under the assumption of known motor parameters and measurable rotor flux. Simulation results are provided for illustration.
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Induction motor control system performance under Magnetic Saturation
Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999Co-Authors: Hossam Abdel Fattah, Kenneth A. Loparo, H.m. EmaraAbstract:The response of an induction motor speed control system with a saturating main Magnetic path is studied using simulation. The performance of different types of vector control laws and a feedback linearizing scheme are considered on an (a, b) model of the induction motor which includes Saturation. Cases where Magnetic Saturation drastically affects the control system performance are identified, in particular the sensitivity of feedback linearizing schemes to Magnetic Saturation is investigated.
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Adaptive input-output linearization of induction motors with Magnetic Saturation
IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468), 1Co-Authors: Manal S. M. Ismail, Hossam Abdel Fattah, Ahmed BahgatAbstract:The problem of controlling induction motor with Magnetic Saturation is addressed from an input-output feedback linearization perspective. The induction motor /spl pi/-model is considered. An adaptive input-output feedback linearizing controller is developed under the assumption of measurable states but unknown rotor resistance and load torque, which are both online estimated by the controller. Simulation results are provided for illustration.
Tadashi Fukao - One of the best experts on this subject based on the ideXlab platform.
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Radial Force and Torque of a Bearingless Switched Reluctance Motor Operating in a Region of Magnetic Saturation
IEEE Transactions on Industry Applications, 2004Co-Authors: Masatsugu Takemoto, Hirofumi Akagi, Akira Chiba, Tadashi FukaoAbstract:Bearingless switched reluctance motors, which can control rotor radial positions with Magnetic force, have been proposed. These motors are characterized by integration of switched reluctance motors and Magnetic bearings. It is essential for a control system to consider Magnetic Saturation in real time in order to realize stable operation at a full torque load. Thus, this paper proposes a method for fast calculation of radial force and torque of a bearingless switched reluctance motor operating in a region of Magnetic Saturation. It is shown experimentally that the proposed method is effective in calculating the radial force and the torque under conditions of Magnetic Saturation.
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Effects of Magnetic Saturation on radial force of bearingless synchronous reluctance machines
Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting, 1993Co-Authors: Akira Chiba, Tadashi Fukao, M. Hanazawa, M.a. RahmanAbstract:The effects of Magnetic Saturation on radial force production in synchronous reluctance type bearingless motors are discussed. MMFs are calculated and flux densities are derived with approximated Magnetic Saturation curve. The radial force is almost proportional to the difference of squared flux densities. The maximum radial force is limited by Magnetic Saturation. To achieve maximum radial force, motor excitation has to be set to an optimal value. The force constant (radial force/radial force winding current) can also be maximized at the optimal excitation. The maximum radial force value is derived.
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A decoupling control method of reluctance type bearingless motors considering Magnetic Saturation
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting, 1Co-Authors: Chikara Michioka, Akira Chiba, T. Sakamoto, O. Ichikawa, Tadashi FukaoAbstract:The interference of the torque component current of a motor with the radial position control of reluctance-type bearingless motors is investigated. In order to cancel this interference, a decoupling control method has been proposed. With this method, machine parameter identification of radial force production is very important. It is shown that the radial force constants exhibit significant variations in accordance with the torque component current due to Magnetic Saturation. The parameter tuning of the decoupling compensator taking into account the Magnetic Saturation is found to realize very stable operation in radial rotor position control.
Kenneth A. Loparo - One of the best experts on this subject based on the ideXlab platform.
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Passivity-based torque and flux tracking for induction motors with Magnetic Saturation
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000Co-Authors: Hossam Abdel Fattah, Kenneth A. LoparoAbstract:An observer-based, globally asymptotically stable torque and rotor flux magnitude tracking controller for induction motors under Magnetic Saturation is proposed. Simulation results are provided.
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Induction motor control system performance under Magnetic Saturation
Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999Co-Authors: Hossam Abdel Fattah, Kenneth A. Loparo, H.m. EmaraAbstract:The response of an induction motor speed control system with a saturating main Magnetic path is studied using simulation. The performance of different types of vector control laws and a feedback linearizing scheme are considered on an (a, b) model of the induction motor which includes Saturation. Cases where Magnetic Saturation drastically affects the control system performance are identified, in particular the sensitivity of feedback linearizing schemes to Magnetic Saturation is investigated.
A B Fernandes - One of the best experts on this subject based on the ideXlab platform.
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switched reluctance machine modeling including core Magnetic Saturation the self excited operation mode
Conference of the Industrial Electronics Society, 2012Co-Authors: V R Bernardeli, D A Andrade, L C Gomes, A W F V Silveira, G P Viajante, A B FernandesAbstract:This paper presents a switched reluctance machine (SRM) modeling including core Magnetic Saturation. The self-excited operation mode switched reluctance generator (SRG) as example application. In addition, following an extensive bibliographic review about self-excited switched reluctance generator (SSRG), the mathematical model, principle of operation and simulation results of the generator dynamics is presented. To correctly represent the self excitation operation the mathematical model must take into account the core Magnetic Saturation, and that is observed here. Experimental results are included to validate the discussions presented.
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IECON - Switched reluctance machine modeling including core Magnetic Saturation - the self-excited operation mode
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012Co-Authors: V R Bernardeli, D A Andrade, L C Gomes, A W F V Silveira, G P Viajante, A B FernandesAbstract:This paper presents a switched reluctance machine (SRM) modeling including core Magnetic Saturation. The self-excited operation mode switched reluctance generator (SRG) as example application. In addition, following an extensive bibliographic review about self-excited switched reluctance generator (SSRG), the mathematical model, principle of operation and simulation results of the generator dynamics is presented. To correctly represent the self excitation operation the mathematical model must take into account the core Magnetic Saturation, and that is observed here. Experimental results are included to validate the discussions presented.
Shigeru Okuma - One of the best experts on this subject based on the ideXlab platform.
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sensorless control of synchronous reluctance motors based on extended emf models considering Magnetic Saturation with online parameter identification
IEEE Transactions on Industry Applications, 2006Co-Authors: Shinji Ichikawa, Mutuwo Tomita, Shinji Doki, Shigeru OkumaAbstract:A sensorless control method based on novel extended electromotive force (EEMF) models considering Magnetic Saturation is proposed for synchronous reluctance motors (SynRMs). Since motor parameters, particularly inductances, vary largely in SynRMs, a precise sensorless control is necessary for fully considering such variations. In this paper, the EEMF model, taking into consideration Magnetic Saturation, is derived and is applied to a position estimation method. The two EEMF models caused by a difference in the d-axis direction are shown, and the appropriate EEMF model that can suppress a position estimation error caused by the deviation of inductance parameters is proposed. Moreover, an online parameter identification method for sensorless control in middle- or high-speed ranges is proposed. The necessity for the use of the model, taking into consideration Magnetic Saturation, is verified by experiments. The proposed sensorless control system is shown useful by experiments
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Novel model of synchronous reluctance motors including Magnetic Saturation and its sensorless control
The Fifth International Conference on Power Electronics and Drive Systems 2003. PEDS 2003., 1Co-Authors: Shinji Ichikawa, Mutuwo Tomita, Shinji Doki, Shigeru OkumaAbstract:In this paper, we discuss a mathematical model that accounts for Magnetic Saturation in synchronous reluctance motors and we derive a novel mathematical model called extended EMF. In synchronous reluctance motors, since large currents cause Magnetic Saturation, it is necessary for a precise sensorless control to give it every consideration. We propose here the extended EMF model, which accounts for Magnetic Saturation, and we apply it to an estimation position method. We also discuss the d-axis directions of a motor model and determine an appropriate d-axis direction for the sensorless control. The experimental results verified that position estimations differ because of differences between the two d-axis directions. The results also demonstrate the success of the proposed sensor-less control based on the extended EMF model.
