The starting of single-phase engine, physical processes and theoretical premises

Abstract

There is revealed an effective use of asynchronous engine for mechanisms and machines that are running idle and reduced starting torque. The stator is equipped with a single winding divided, on startup, in the two parts, with the number of coilings which differ by (3-4) times. The parameters of respective parties (resistances and inductances) differ essentially, thus insuring the engine startup. The paper presents theory elements referring to these engines. The obtained results have been confirmed using the finite elements method in determining the magnetic field.

Se constata utilizarea eficienta a motorului asincron pentru mecanismele si masinile cu pornirea in gol si cuplul de pornire redus. Pe stator este prevazuta o singura infasurare divizata, la pornire, in doua parti, cu numarul de spire care difera de (3-4) ori. Parametrii partilor respective (rezistentele si reactantele) se deosebesc esential, astfel fiind asigurata pornirea motorului. In lucrare sunt prezentate elemente de teorie referitoare la aceste motoare. Rezultatele obtinute s-au confirmat folosind metoda elementelor finite la determinarea campului mgnetic.