Download PDF by Fouad Giri: AC Electric Motors Control Advanced Design Techniques and

By Fouad Giri

The complexity of AC motor regulate lies within the multivariable and nonlinear nature of AC computing device dynamics. fresh developments on top of things idea now give the chance to accommodate long-standing difficulties in AC vehicles keep watch over. this article expertly attracts on those advancements to use quite a lot of model-based keep watch over designmethods to numerous AC automobiles. Contributions from over thirty most sensible researchers clarify how glossy keep an eye on layout tools can be utilized to accomplish tight pace rules, optimum vigorous potency, and operation reliability and security, by means of contemplating on-line kingdom variable estimation within the absence of mechanical sensors, strength issue correction, desktop flux optimization, fault detection and isolation, and fault tolerant regulate. Describing the full keep watch over strategy, either controller and observer designs are validated utilizing complex nonlinear equipment, balance and function are analysed utilizing strong innovations, together with implementation concerns utilizing electronic computing capacity. different key good points: - Covers the most varieties of AC vehicles together with triphase, multiphase, and doubly fed induction automobiles, wound rotor, everlasting magnet, and inside PM synchronous automobiles - Illustrates the usefulness of the complicated regulate tools through business functions together with electrical cars, excessive velocity trains, metal turbines, and extra - contains specified concentrate on sensorless nonlinear observers, adaptive and strong nonlinear controllers, output-feedback controllers, fault detection and isolation algorithms, and fault tolerant controllers

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Besides, some of their parameters are time varying and some of their state variables are not accessible to measurements. , Lubineau et al. 2000; Montanan et al. 2006; Traore et al. 2008; El Fadili et al. 2012a). These problems are generally dealt with using model-based control approaches, that is, the controller or the observer design relies upon a given model that is supposed to accurately describe the machine of interest. , Lubineau et al. 2000). Then, the obtained models turn out to be linear and of quite limited use.

An inherent property to (balanced) three-phase systems is that their homopolar components, that is, x0 = xa + xb + xc , are null all the time. In the latter, this property will be systematically used because all involved three-phase systems will be balanced. 1) is associated to a (fictive) three-coordinate frame, say abc. This frame is sometimes also said to be stationary or stator-related. Then, the Concordia transformation is resorted to project the abc-frame onto the fixed two-coordinate αβ-frame (Blaschke 1972).

87). 4). 2 Identification of Electrical Parameters Traditionally, the steady-state model of a three-phase induction motor is represented by the per phase equivalent circuit. 7 (Leonard 2001). 7 Per phase equivalent circuit, viewed from the stator, of a three-phase induction motors. Vs is the stator phase voltage; Rs is stator resistance and R is the rotor winding resistance brought to the stator side; N is the equivalent inductance of both stator and rotor leakage brought to the rotor side. L s is the magnetizing and stator inductance; Rc is the equivalent resistance for core loss; and s is the slip.

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AC Electric Motors Control Advanced Design Techniques and Applications by Fouad Giri

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