Advanced Electrical Drives: Analysis, Modeling, Control by Rik De Doncker, Duco W.J. Pulle, André Veltman PDF

By Rik De Doncker, Duco W.J. Pulle, André Veltman

ISBN-10: 9400701799

ISBN-13: 9789400701793

Electrical drives convert in a managed demeanour, electricity into mechanical power. electric drives include an electric desktop, i.e. an electro-mechanical strength converter, an influence digital converter, i.e. an electrical-to-electrical converter, and a controller/communication unit. this present day, electric drives are used as propulsion platforms in high-speed trains, elevators, escalators, electrical ships, electrical forklift vans and electrical automobiles. complicated keep watch over algorithms (mostly digitally carried out) enable torque regulate over a high-bandwidth. consequently, detailed movement keep an eye on will be completed. Examples are drives in robots, pick-and-place machines, manufacturing unit automation undefined, etc.
Most drives can function in motoring and producing mode. Wind generators use electric drives to transform wind strength into electricity. progressively more, variable pace drives are used to avoid wasting power for instance, in air-conditioning devices, compressors, blowers, pumps and residential appliances.
Key to make sure reliable operation of a force within the aforementioned functions are torque keep watch over algorithms. In complex electric Drives, a special strategy is to derive version dependent torque controllers for every type of Lorentz strength machines, i.e. DC, synchronous and induction machines. The rotating transformer version kinds the foundation for this generalized modeling process that eventually results in the improvement of common field-oriented regulate algorithms. In case of switched reluctance machines, torque observers are proposed to enforce direct torque algorithms.
From a didactic point of view, tutorials are integrated on the finish of every bankruptcy. The reader is inspired to execute those tutorials to familiarize him or herself with all elements of force know-how. as a result, complicated electric Drives encourages “learning by way of doing”. moreover, the skilled force professional might locate the simulation instruments important to layout high-performance controllers for all types of electric drives.

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Extra info for Advanced Electrical Drives: Analysis, Modeling, Control

Example text

Also shown in Fig. 11 are the half-bridge voltages ua , ub , uc which toggle between ± uDC/2, 32 2 Modulation Techniques for Power Electronic Converters with respect to the zero bus voltage node. In addition, the three comparator output switch states Swa , Sw b , Swc are shown in Fig. 11. Fig. 11 Asymmetrically sampled PWM, three-phase converter, use of pulse centering unit The generic diagram for the three-phase converter as given in Fig. 12 is similar to the modulator concept described for the single-phase full-bridge converter.

21). Using a pulse centering unit is important to maximize the linear operating region of the converter. Hence, further discussion will focus on Fig. 11, which also shows the switch states that correspond with this example. 21), be interpreted as a set of voltage space vectors. The switch states shown in Fig. 11 represent a subset of the eight possible converter switching combinations {Swa , Swb , Swc } which gives u{Swa ,Swb ,Swc } = 2 uDC Sw a + Sw b ejγ + Swc ej2γ . 29) shows that there are six active voltage vectors of magnitude 2/3 uDC that are displaced by π/3 rad as indicated in Fig.

1 Tutorial 1: Half-Bridge Converter with Pulse Width Modulation This tutorial is concerned with the implementation of a half-bridge converter structure as given in Fig. 1. The ideal switches are to be replaced by a combination of ideal semiconductors and diodes as shown in Fig. 16. A supply voltage uDC = 300 V is assumed together with an impedance Z which in this case is reduced to an ideal inductance of 100 mH. A modulator structure as shown in Fig. 4 is to be implemented with a sample interval setting of Ts = 1 ms.

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Advanced Electrical Drives: Analysis, Modeling, Control by Rik De Doncker, Duco W.J. Pulle, André Veltman


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