By Jean Claude Alacoque
Clear presentation of a brand new keep an eye on procedure utilized to induction computer (IM), floor fastened everlasting magnet synchronous motor (SMPM-SM) and inside everlasting magnet synchronous motor (IPM-SM)
Direct Eigen keep watch over for Induction Machines and Synchronous Motors presents a transparent and consise rationalization of a brand new approach in alternating present (AC) motor keep an eye on. in contrast to comparable books out there, it doesn't current a variety of regulate algorithms for every kind of AC motor yet explains one approach designed to regulate all AC motor kinds: Induction computer (IM), floor fixed everlasting Magnet Synchronous Motor (SMPM-SM) (i.e. Brushless) and inside everlasting Magnet Synchronous Motor (IPM-SM). this absolutely new regulate process can be utilized not just for AC motor keep watch over but in addition to manage enter clear out present and voltage of an inverter feeding an AC motor.
- Accessible and transparent, describes a brand new quickly form of motor regulate utilized to induction desktop (IM), floor fastened everlasting magnet synchronous motor (SM-PMSM) and inside everlasting magnet synchronous motor (I-PMSM) with a variety of examples
- Summarizes a style that supersedes the 2 recognized direct keep an eye on ideas – Direct Self keep an eye on and Direct Torque keep an eye on – for use for AC motor keep an eye on and to regulate enter clear out present and voltage of an inverter feeding an AC motor
- Presents accomplished simulations which are effortless for the reader to breed on a working laptop or computer. A control software is hosted on a spouse website
This e-book is straight-forward with transparent mathematical description. It provides simulations in a fashion that's effortless to appreciate and to breed on a working laptop or computer, while omitting information of functional implementation of regulate, to ensure that the most idea to take concentration. The ebook is still concise by means of leaving out description of sensorless controls for all motor forms. The sections on “Control Process”, “Real Time Implementation” and “Kalman clear out Observer and Prediction” within the introductory chapters clarify the best way to virtually enforce, in genuine time, the discretized regulate with all 3 different types of AC automobiles. so as, this booklet describes induction computing device, SMPM-SM, IPM-SM, and, program to LC filter out boundaries. The appendixes current: PWM vector calculations; move matrix calculation; move matrix inversion; Eigen kingdom house vector calculation; and, transition and command matrix calculation.
Essential analyzing for Researchers within the box of force keep an eye on; graduate and post-graduate scholars learning electrical machines; electrical engineers within the box of railways, electrical vehicles, airplane floor keep an eye on, army functions. The strategy is additionally precious for Engineers within the box of desktop instruments, robots and rolling mills.
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Extra resources for Direct Eigen Control for Induction Machines and Synchronous Motors
Hexagon vertices located at the extremities of the six voltage vectors of the inverter delimit a realizable voltage domain with a three-phase voltage inverter, but without taking into account dead-times. The circle inscribed in the hexagon delimits in its turn a field of the realizable fundamental voltage (first harmonic). The magnitude of the voltage vector V f , represents the maximum voltage of the fundamental component; it measures at its maximum 1 / 2 times the DC voltage of the Uc capacitor, if we do not take account of voltage drops or inverter dead-times.
4). 20). 4, is a traction operation (positive torque). This new equivalent circuit makes it possible to highlight the following: ● ● The transfer of the rotor leakage inductance toward the stator leakage inductance. 30) and thus: ● The current I q in the equivalent rotor resistance is in lead quadrature compared to the air gap flux vector. In accord with the Lorentz law, the fundamental electrical torque per pole pair is equal to the cross product of the air gap flux vector by the stator current vector.
Actually, ωs interests us only because it reveals a link between set-points Id, Iq and Φrd in the set-point rotating reference frame, since if we except ωs, we have only two control variables with stator voltage coordinates for regulating three physical variables on their respective set-point. 133), calculated by the control, is presented in detail in the appendix A. 4 Control The inversion of state-space equations makes it possible to simply discover a new control method. We will analyze the various stages of its realization with an example of a real-time implementation at a constant sampling period.