Alternating Current Multi-Circuit Electric Machines: A New by Valentin Asanbayev

By Valentin Asanbayev

This booklet info an method for attention of the sphere decomposition notion. The e-book offers the tools in addition to strategies and methods for constructing electrical computing device circuit-loops and making a choice on their parameters. The tools constructed were learned utilizing the versions of machines with laminated and sturdy rotor having classical constitution. using such types are good well-known and simplifies sensible implementation of the bought results.

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Extra resources for Alternating Current Multi-Circuit Electric Machines: A New Approach to the Steady-State Parameter Determination

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1 An Induction Machine with a Single-Winding Rotor: Voltage Equations. . 25 The flux of mutual induction Φm ¼ Φ11 ¼ Φ12 (magnetizing flux) crossing the stator and rotor windings induces in them the emfs. 24), the emf E1m ¼ E11 is induced in the stator winding, and the emf E2m ¼ E12 is produced in the rotor winding. 19), for the emfs E1m ¼ E11 and E2m ¼ E12 we have  pffiffiffi ðÀE1m Þ ¼ ðÀE11 Þ ¼ j= 2 ω1 w1 kw1 Φ11 and ðÀE2m Þ ¼ ðÀE12 Þ  pffiffiffi ¼ j= 2 ω1 w2 kw2 Φ12 Since Φm ¼ Φ11 ¼ Φ12, from here, the ratio of emf (E11/E12) acquires 0 E11 =E12 ¼ w1 kw1 =w2 kw2 ¼ kE or E11 ¼ kE E12 ¼ E12 ð2:28Þ where kE ¼ w1kw1/w2kw2.

3) induce emfs E2 and E12 in the rotor winding, where E2 is the total own emf (total emf of selfinduction) and E12 is the emf of mutual induction of the rotor winding. The resulting emf of the rotor winding E2p is determined from the condition in the form of E2р ¼ E2 þ E12 ð2:5Þ The emfs E1 and E21 induced in the stator winding and emfs E2 and E12 produced in the rotor winding can be represented by the corresponding total own reactance values (total reactance values of self-induction) and reactance values of mutual induction of the stator and rotor windings.

The circuit obtained in this way will be under the referred values of the rotor winding current and emf. Consequently, the equivalent circuit in Fig. 7 reflecting an electric machine having stator and rotor windings with different numbers of turns and phases can be transformed into the equivalent circuit for the two “electrically coupled” conditional windings (circuits), if the referred values of the rotor winding emf and current are used in the circuit in Fig. 7, for example, [1, 3, 8–10]. Below we consider three methods for the introduction of the referred values of the rotor winding emf and current in order to obtain the conditional electrical circuit of the form in Fig.

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