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Download e-book for iPad: AC Electric Motors Control Advanced Design Techniques and by Fouad Giri

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By Fouad Giri

The complexity of AC motor keep watch over lies within the multivariable and nonlinear nature of AC laptop dynamics. contemporary developments up to speed thought now give the chance to house long-standing difficulties in AC vehicles keep watch over. this article expertly attracts on those advancements to use a variety of model-based regulate 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 velocity legislation, optimum vigorous potency, and operation reliability and safeguard, via contemplating on-line nation variable estimation within the absence of mechanical sensors, strength issue correction, computer flux optimization, fault detection and isolation, and fault tolerant keep watch over. Describing the whole regulate strategy, either controller and observer designs are validated utilizing complicated nonlinear equipment, balance and function are analysed utilizing strong concepts, together with implementation concerns utilizing electronic computing skill. different key gains: - Covers the most varieties of AC automobiles together with triphase, multiphase, and doubly fed induction vehicles, wound rotor, everlasting magnet, and inside PM synchronous vehicles - Illustrates the usefulness of the complex keep an eye on equipment through commercial functions together with electrical automobiles, excessive velocity trains, metal generators, and extra - contains distinct 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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27) is a free parameter assuming several possible choices. This entails several variants of the two-coordinate frame (d, q). The two most common in the literature are the following: • The fixed reference frame (α, β), connected to the stator. • The rotating reference frame (d, q), linked to, for example, the rotor flux or the stator current. 25), as follows: • Set ψ = 0, for the transformation of the stator variables. • Set ψ = θ, for the transformation of the rotor variables. The passage from the triphase frame (a, b, c) to the rotating frame (d, q) is accomplished by choosing the transformation angle ψ as follows: • Set ψ = θs , for the transformation of stator variables.

References Blaschke F (1972) The principle of field orientation applied to the new trans-vector closed-loop control system for rotating field machine. Siemens Review, 93, 217–220. De Leon J, Alvarez-Leal JG, Castro-Linares R, and Alvarez-Gallegos J (2001) Control of a flexible joint robot manipulator via a nonlinear control-observer scheme. International Journal of Control, 74, 290–302. El Fadili A, Giri F, Magri A, et al. (2012a) Adaptive nonlinear control of induction motors through AC/DC/AC converters.

94) Blocked Rotor Test In this experiment the rotor is blocked, that is, prevented from turning. Then, a balanced three-phase voltage is applied to the stator terminals so that the resulting current equals the rated current. Again, all currents, voltages and powers are measured at the motor input. In the blocked rotor operation, the slip s is equal to 1. 9. The measurements to be performed in this test are the following: • • • • The three-phase active power Pbl . The three-phase reactive power Q bl .

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