By Fouad Giri
The complexity of AC motor keep watch over lies within the multivariable and nonlinear nature of AC laptop dynamics. contemporary developments on top of things conception now give the opportunity to accommodate long-standing difficulties in AC vehicles regulate. this article expertly attracts on those advancements to use quite a lot of model-based keep an eye on designmethods to quite a few AC automobiles. Contributions from over thirty best researchers clarify how sleek regulate layout equipment can be utilized to accomplish tight velocity law, optimum vigorous potency, and operation reliability and defense, by way of contemplating on-line country variable estimation within the absence of mechanical sensors, strength issue correction, computing device flux optimization, fault detection and isolation, and fault tolerant keep an eye on. Describing the full regulate strategy, either controller and observer designs are validated utilizing complex nonlinear tools, balance and function are analysed utilizing strong ideas, together with implementation issues utilizing electronic computing capacity. different key gains: - Covers the most varieties of AC vehicles together with triphase, multiphase, and doubly fed induction automobiles, wound rotor, everlasting magnet, and inside PM synchronous vehicles - Illustrates the usefulness of the complex keep an eye on tools through commercial purposes together with electrical autos, excessive velocity trains, metal generators, and extra - contains detailed specialize in sensorless nonlinear observers, adaptive and strong nonlinear controllers, output-feedback controllers, fault detection and isolation algorithms, and fault tolerant controllers
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Additional info for AC Electric Motors Control Advanced Design Techniques and Applications
IEEE Transactions on Energy Conversion, 10, 455–460. Lubineau D, Dion JM, Dugard L, and Roye D (2000) Design of an advanced nonlinear controller for induction motor and experimental validation on an industrial benchmark. EPJ Applied Physics, 9, 165–175. 40 AC Electric Motors Control Montanan M, Peresada S, and Tilli A (2006) A speed-sensorless indirect ﬁeld-oriented control for induction motors based on high gain speed estimation. Automatica, 42, 1637–1650. Novotnak RT, Chiasson J, and Bodson M (1999) High performance motion control of an induction motor with magnetic saturation, IEEE Transactions on Control Systems Technology, 7, 315–327.
Adaptive output-feedback controllers are developed and formally shown to solve the control problem. The controller involves online estimation of the unknown parameters. The speciﬁc observability and identiﬁability conditions that allow for the exponential tracking and identiﬁcation of the uncertain parameters are emphasized in terms of persistent excitation conditions. The key idea of the control and estimation design relies in adopting a two-time scale strategy by performing a sufﬁciently slow adaptation for the stator resistance estimate.
9) is a function of the rotor position θ, which is time varying. To overcome these difﬁculties, adequate coordinate transformations are available 22 AC Electric Motors Control that reduce the system order and eliminate the dependence on θ. The main transformations are presented in the following subsection. 4). The three-phase current system (i a , i b , i c ) traversing n 1 turns and two-phase current system (i d , i q ), traversing n 2 turns are said to be equivalent if they produce the same air-gap MMF.