By Fouad Giri
The complexity of AC motor regulate lies within the multivariable and nonlinear nature of AC computing device dynamics. contemporary developments up to speed conception now give the opportunity to accommodate long-standing difficulties in AC vehicles regulate. this article expertly attracts on those advancements to use a variety of model-based keep watch over designmethods to numerous AC vehicles. Contributions from over thirty best researchers clarify how sleek keep an eye on layout equipment can be utilized to accomplish tight pace legislation, optimum full of life potency, and operation reliability and defense, by means of contemplating on-line country variable estimation within the absence of mechanical sensors, strength issue correction, laptop flux optimization, fault detection and isolation, and fault tolerant keep watch over. Describing the whole keep an eye on procedure, either controller and observer designs are established utilizing complicated nonlinear equipment, balance and function are analysed utilizing robust innovations, together with implementation concerns utilizing electronic computing capacity. different key good points: - Covers the most different types of AC vehicles together with triphase, multiphase, and doubly fed induction vehicles, wound rotor, everlasting magnet, and inside PM synchronous automobiles - Illustrates the usefulness of the complicated regulate equipment through commercial functions together with electrical autos, excessive velocity trains, metal generators, and extra - comprises distinct specialize in sensorless nonlinear observers, adaptive and powerful nonlinear controllers, output-feedback controllers, fault detection and isolation algorithms, and fault tolerant controllers
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Additional resources for AC Electric Motors Control Advanced Design Techniques and Applications
Published 2013 by John Wiley & Sons, Ltd. 42 AC Electric Motors Control Arkkio et al. 1990; Bangura and Arkadan 1999). This method provides a very accurate description of the electromagnetic ﬁeld distribution in the machine. But, the proposed models are quite complex (large number of parameters) and computationally burdensome, which makes them of little interest for control design purpose. The second modelling method, referred to permeance network, consists of representing the machine magnetic circuit by an equivalent circuit diagram (Hecquet and Brochet 1998; Srairi et al.
Rs By choosing a reference frame linked to the stator voltage, the stator and grid currents are made directly related to the active and reactive powers. Then, the power exchanged between the motor and the grid can be controlled by controlling the currents. Letting the d-axis of the frame be oriented along the stator voltage entails vsd = Vs and vsq = 0. 76) dirq γ2 = −γ1 i rq − (ωs − pωm )i rd + φsq + pωm γ2 φsd + γ3 vrq . 4 Identiﬁcation of Induction Motor Parameters In this section, an experimental procedure is described to get estimates of the mechanical and the electrical parameters of a squirrel-cage induction machine.
This provides the motor with robustness but makes its control more complex. The wound rotor induction motor is similar to the squirrel-cage motor except that the rotor winding is made of individually insulated coils. Connections from the coils are brought to collector rings. The rotor circuit is not short-circuited on itself as in the squirrel-cage motor. 2). 1 Squirrel-cage induction motor. Copyright granted, 2012, ABB; all rights reserved. 2 Wound rotor of the DFIM. org; accessed December 21, 2012 IEEE.
AC Electric Motors Control Advanced Design Techniques and Applications by Fouad Giri