Results 261 to 270 of about 717,747 (301)
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Field Oriented Control of Synchronous Machines
IETE Journal of Research, 1991Although field orientation in induction machines is only 20 years old, the corresponding concept in synchronous machines dates back almost 60 years to the days of the thyratron tube. After a brief historical review, the basic theory of synchronous machine field orientation is outlined.
D W Novotny, P L Jansen
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An alternative strategy for field oriented control
2006 American Control Conference, 2006A new control strategy based on optimal control theory is developed in this paper and applied to an induction motor drive. The distinguished feature of the proposed control design is that it achieves the same performances as the field oriented control without the need for heavy and expensive gain tuning.
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Field oriented control of a synchronous drive
IEEE International Conference on Electric Machines and Drives, 2005., 2005Field oriented control (FOC) may be used for simple high-power synchronous drives, such as pumps and fans, to unify system with asynchronous drives. But distinction is strong influence of torque component of current on flux. Internal feedback in control object is investigated. This feedback becomes positive one in definite regimes. A simple addition in
D. Beliav +3 more
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Principles of Vector Control and Field Orientation
1996Abstract In this chapter the basic concepts of torque control and field orientation are introduced based on steady state considerations for both synchronous and induction machines. A basic set of three requirements which enable direct control of machine torque production is developed and used to illustrate the type of controller ...
D W Novotny, T A Lipo
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A neural network controller for indirect field orientation control
IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting, 2002This paper presents the design of a neural network controller for the stator current command in an indirect field oriented system. A particular three layer neural network structure is studied in some detail. This neural network controller has two outputs, stationary frame q and d axis current commands i/sub qs//sup s/ and i/sub ds//sup s/. The input to
M. Mohamadian, E.P. Nowicki, J.C. Salmon
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Field-oriented controlled induction generator with loss minimization
IEEE Transactions on Industrial Electronics, 2002In this paper, a strategy to control an induction generator (IG) working with variable speed and load is presented and discussed. An inverter and a field-oriented controller are used in order to excite the induction machine (IM) efficiently, minimizing copper and iron losses, and to regulate the generated voltage.
Roberto Leidhold +2 more
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Sensorless adaptive field oriented control of brushless motor
2016 European Control Conference (ECC), 2016“Field Oriented Control” (FOC) is the the most efficient way to control a bruchless motor. This control generates constantly a magnetic field perpendicular to the rotor, which maximises its efficiency. However, to do so, it requires knowledge of the rotor position in real time.
Aurélien Cabarbaye +2 more
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An improved indirect field-oriented controller for the induction motor
IEEE Transactions on Control Systems Technology, 2003In this paper, the standard indirect field-oriented controller (IFOC) commonly used in current-fed induction motor drives is modified to achieve global exponential rotor velocity/rotor flux tracking. The modifications to the IFOC scheme, which involve the injection of nonlinear terms into the current control input and the so-called desired rotor flux ...
Aman Behal +2 more
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Speed sensorless field orientation control of the induction machine
Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting, 1993A speed estimation method for an induction machine and its application to a flux observer-based field orientation (FOFO) control system proposed previously is presented. The motor speed is estimated on the basis of the difference between two flux estimators. The convergence of the method is analyzed, and a novel pole assignment method is proposed.
H. Tajima, Y. Hori
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Dynamics of Vector Control and Field Orientation
1996Abstract The steady state analysis in Chapter 5 has been used to demonstrate the basic concepts of vector control and field orientation in both synchronous and induction machines. The underlying motivation in Chapter 5 was to obtain torque (and flux) control independent of motor speed.
D W Novotny, T A Lipo
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