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

By Valentin Asanbayev

This booklet information an strategy for recognition of the sphere decomposition suggestion. The publication offers the equipment in addition to thoughts and techniques for developing electrical laptop circuit-loops and identifying their parameters. The equipment constructed were learned utilizing the versions of machines with laminated and stable rotor having classical constitution. using such versions are good well-known and simplifies functional implementation of the got results.

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

Sample text

Therefore, the stator and rotor leakage fields can be transmitted to the surface passing through the middle of the air gap (symmetry surface). The pictures of the leakage field distribution corresponding to this condition are shown in Figs. 6. Now, in accordance with such a depiction of the leakage field distribution, the value of magnetizing emf Em can be considered placed on the surface passing through the middle of the air gap. Therefore, the magnetizing flux Φm producing the emf Em is determined on this air gap surface.

0 ¼ xx1112 ¼ kE or E1m ¼ kEE2m ¼ E2m . 58) for the referred value of emf E2m have the same structure, although they were obtained using different methods. 24), we use the referred values of emf E2m 0 and current I2 . 59). 56) describing the equivalent circuit for the two conventionally “electrically coupled” windings (Fig. 10). c) The transfer method. Let us consider the equivalent circuit in Fig. 8, in which we transfer its parallel branch a À b to the terminals of emf E1m. For this purpose, the technique described in [4] can be used.

Indeed, the equivalent circuit in Fig. 10 shows the conditional electrical coupling between the stator and rotor windings. This coupling is provided thanks to the presence of the common 0 transverse branch flowed by the current Im, defined as Im ¼ I1 + I2 . b) The reduction method. 32), the stator current consists 0 of two components: the no-load current Im and current (ÀI2 ) proportional to the rotor load current I2. The current Im is determined when I2 ¼ 0, and the current 0 (ÀI2 ) is adjusted when Im ¼ 0.

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