Speed control of asynchronous machines with stator windings formed by the method of modulating the current phase.

Abstract

The principle of speed control by changing the harmonic composition of the magnetic field in the air gap of asynchronous short-circuited machines with stator windings formed by the modulation of the current phase is considered. The adjustment is made by introducing additional harmonics into parallel branches of the stator winding. (p1:p2=1:4) and with a ratio close to unity (p1:p2=4:5).