THE ELECTROMAGNETIC FIELD OF STATOR WINDING OF ALTERNATING-CURRENT MACHINE

An analytical method for calculating the electromagnetic field of the stator winding of an alternating current machine is presented by solving the Laplace's equations, first for a point conductor with a current i, by separating the variables when representing the space of the machine location consisting of five areas. The resulting field is conventionally divided into three components: the main field; the scattering field along the teeth crowns; the field of belt scattering when studying the magnetic field in the air gap created by the stator winding. With the passage of time, i.e. as the rotation of the star vectors of the phase currents, the axis of each pair of poles remains stationary relative to the winding, coinciding with the axis of the corresponding groove and changes only the magnitude of the magnetic induction is almost proportional to the total current of the groove. The amount of all rest spatial harmonic fields air clearance before tine, except the main, shows leakage fields of the dissipation. The amount leakage and on crown tine forming field of the air clearance presents field of the differential dissipation windings. The aim of the paper is to show that for all three components of the air gap field created by the winding, the magnetic circuit is common, but the magnetic circuits for each of them are different.