By Kwang Hee Nam
Motor keep watch over expertise maintains to play a necessary position within the initiative to get rid of or at the least reduce petroleum dependency and greenhouse fuel emissions worldwide. elevated motor potency is an important point of this technological know-how within the worldwide transition to wash energy use in components reminiscent of commercial functions and residential appliances―but relatively within the layout of vehicles.
Summarizes the evolution of motor riding devices towards excessive potency, reasonable, excessive strength density, and versatile interface with different components
AC Motor keep an eye on and electrical automobile Applications addresses the themes pointed out in its name but in addition elaborates on motor layout standpoint, equivalent to again EMF harmonics, loss, flux saturation, and reluctance torque, and so forth. holding theoretical integrity in AC motor modeling and keep an eye on all through, the writer specializes in the advantages and straightforwardness of the rotor field-oriented keep watch over, describing the fundamentals of PWM, inverter, and sensors. He additionally clarifies the basics of electrical autos and their linked dynamics, motor matters, and battery limits. a robust compendium of functional details, this ebook serves as an total great tool for the layout and keep an eye on of high-efficiency motors.
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Additional resources for AC Motor Control and Electrical Vehicle Applications
Nam, A load torque compensation scheme under the speed measurement delay, IEEE Trans. Ind. , Vol. 45, no. 2, pp. 283 − 290, Apr. 1998.  K. J. Astrom, C. C. Hang, and B. C. Lim, A new Smith predictor for controlling a process with an integrator and long dead-time, IEEE Trans. Automat. , Vol. 39, pp. 343 − 345, Feb. 1994.  A. Isidori, Nonlinear Control Systems II, Springer, 1999.  J. Jung, S. Lim, and K. Nam, A feedback linearizing control scheme for a PWM converter-inverter having a very small DC-link capacitor, IEEE Trans.
Let G(s) = G(s) = 1 (Js + B) and Qd (s) = 1 (1 + αs). / a) Determine the closed-loop transfer function, TˆL (s) TL (s). b) Repeat the same when the artiﬁcial delay is not present in the input side. c) Approximate e−τd s ≈ 1 − τd s. Discuss from the stability viewpoint why the observer with the artiﬁcial delay is better compared with the ordinary one. Chapter 2 Rotating Field Theory In AC machines, windings are distributed in such a way that a rotating magnetic ﬁeld is generated by a polyphase AC source.
4: Fourier series expansion: (a) square wave MMF and its fundamental component and (b) approximation up to 7th order. , it helps reduce the harmonics. Speciﬁcally, ( Wπ sin n τp 2 ) ( π) ≤ sin n = 1. 2 At this/time, the / fundamental component is also reduced. 1. Note in that case, the 5th and 7th components are reduced signiﬁcantly. 1: High order pitch factors for W/τp = 5/6. 5: MMF for a fractional pitch winding, W/τp = 2/3. , Na (θ) = N2 sin θ, where N is the total number of turns of a phase winding.