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

By Valentin Asanbayev

This publication information an technique for consciousness of the sector decomposition proposal. The booklet offers the tools in addition to suggestions and techniques for setting up electrical computer circuit-loops and picking out their parameters. The equipment built were discovered utilizing the types of machines with laminated and good rotor having classical constitution. using such types are good well-known and simplifies sensible implementation of the got results.

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

This e-book information an technique for recognition of the sector decomposition inspiration. The booklet offers the tools in addition to ideas and strategies for setting up electrical computing device circuit-loops and identifying their parameters. The equipment built were learned utilizing the types of machines with laminated and reliable rotor having classical constitution.

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

Example text

In order to emphasize that flux Φ12 is also engaged with the stator winding, we introduce a new designation in the form Φ11 ¼ Φ12. The designation of flux Φ11 indicates that it is created by the current in the stator winding and that it crosses the stator winding. Therefore, flux Φ11 is the self-induction flux of the stator winding. 9а), we can state that Φ22 ¼ Φ21. Here, the flux Φ22 is created by the current in the rotor winding, and it crosses the rotor winding. Thus, flux Φ22 represents the self-induction flux of the rotor winding.

The magnetic flux density in the air gap stimulated by the currents in the stator and rotor windings is pffiffiffi calculated by the expression Bk ¼ λm Fk ¼ μ0 0 mk wπpk kwk 2I k , where k ¼ 1, 2. ConkH δ sidering that the air gap flux is defined as Φki ¼ (2/π)Bkτ0l0, we can have, for example, [9] Φki ¼ 2mk wk kwk μ0 τ0 l0 pffiffiffi 2I k 0 π2 p δ kH ð2:21Þ where i ¼ 1, 2. 21) can be used to determine the fluxes Φ11 ¼ Φ12 and Φ22 ¼ Φ21. 21), the second subscript for Φki indicates the winding with which the flux is coupled.

26) can be obtained by using the flux (field) distribution pictures created by the current of each winding individually (Fig. 4a, b). In Fig. 4a, b, the reactance values x11, x12, x22 and x21 represent the fluxes Φ11 ¼ Φ12 and Φ22 ¼ Φ21, and reactance values x1σ and x2σ reflect the leakage fluxes Φ1σ and Φ2σ , respectively. The picture representing the resulting flux (field) distribution in an electric machine follows as a result of superposition of the fluxes (fields) produced by the current of each winding individually (Fig.

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