| 摘要 |
The invention relates to contactless synchronous electrical machines and can be used in power supply systems, alternative power engineering, and various equipment for the automation of manufacturing processes. Its objective is to increase the stability of output voltage. Stator (1) of the proposed induction machine (its cross section shown on Fig. 1) contains two cores (4, 5) with teeth and two three-phase windings that are not interconnected. Fundamental harmonic current flows in the first winding coils (6, 7) while the third current harmonic goes in the second winding coils (8, 9). Coils (6, 7, 8, 9) are made with a definite step between adjacent slots. In addition, the first three-phase winding contains three adjacently positioned coils that are oppositely connected in series, while each phase of the second three-phase winding contains coils that are uniformly positioned on teeth over the stator surface and interconnected in an accordant series connection, which are repeated after every three teeth. The rotor (2) contains two cores (12, 13) with teeth, between which a ring-shaped excitation winding (16) of the stator (1) is placed. Number z1 of the stator teeth and number z2 of the rotor teeth are related by the following equation:z2 = z1(3k+-1)/9 where z1 = 2z2+-a, k = 0, 1, 2, 3 ...-, a = 1 or 2 - number of coils connected in series or in parallel in each three-phase-winding. When the rotor (2) turns, the fundamental harmonic of electromotive force is induced in coils (6, 7) while the third harmonic of electromotive force is induced in coils (8, 9).<IMAGE>
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