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 the mark concept now give the opportunity to house long-standing difficulties in AC automobiles keep an eye on. this article expertly attracts on those advancements to use quite a lot of model-based keep watch over designmethods to quite a few AC automobiles. Contributions from over thirty most sensible researchers clarify how sleek keep an eye on layout tools can be utilized to accomplish tight velocity legislation, optimum vigorous potency, and operation reliability and safeguard, by means of contemplating on-line nation 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 keep watch over method, either controller and observer designs are established utilizing complex nonlinear tools, balance and function are analysed utilizing robust recommendations, together with implementation concerns utilizing electronic computing skill. different key beneficial properties: - Covers the most varieties of AC automobiles together with triphase, multiphase, and doubly fed induction cars, wound rotor, everlasting magnet, and inside PM synchronous automobiles - Illustrates the usefulness of the complex keep watch over tools through commercial functions together with electrical automobiles, excessive pace trains, metal generators, and extra - contains distinctive 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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Additional resources for AC Electric Motors Control Advanced Design Techniques and Applications
29) [φsdq ] = [P(θs ][L s ][P(θs ]−1 [i sdq ] + [P(θs ][Msr ][P(θr ]−1 [i rdq ]. 30) [φrdq ] = [P(θr ][L r ][P(θr ]−1 [i rdq ] + [P(θr ][Msr ][P(θs ]−1 [i sdq ]. 39) with L s = lso − Mos , cyclical stator inductance; L r = lro − Mor , cyclical rotor inductance; Msr = 3 Mo , mutual inductance between the stator and rotor windings. 42) 29 Control Models for Induction Motors Mechanical Equation in dq Coordinates The mechanical equation of the induction motor describes the motion of the rotor carrying a load.
However, it is hardly applicable in control design due to its high complexity. Then, simpler two-phase variants of that model are obtained by using the Park transformation. The simpler (two-phase) models are still nonlinear but will prove to be tractable in control design. The modeling approach presented in this chapter is deliberately kept simple in the sense that the magnetic circuit has been supposed to be linear. As a matter of fact, in real-life machines, the magnetic circuit characteristic is nonlinear and linear approximations are only accurate if the machine operation does not entail wide-range rotor ﬂux variation.
Traore D, Plestan F, Glumineau A, and De Leon J (2008) Sensorless induction motor: high order sliding mode controller and adaptive interconnected observer. IEEE Transactions on Industrial Electronics, 55, 3818–3827. Vas P (1990) Vector Control of AC Machines. Clarendon Press, Oxford. 1 Introduction Compared to others, synchronous motors enjoy several features, for example, they are suitable for all applications necessitating important speed reversion and they are more efﬁcient for drive applications where wide-range power variations are needed (from a few watts to several megawatts).
AC Electric Motors Control Advanced Design Techniques and Applications by Fouad Giri