The Distribution of The Magnetic Field in The Rotors of Synchronous Machines of Various Designs at Large Slides

Abstract

The paper deals with the analysis of the results of the research of the electromagnetic field in the active zone of solid toothed rotors for various design options of powerful synchronous turbo-motors used as a drive at compressor stations of gas mains. The main regularities of the distribution of magnetic flux in the elements of machines in the short-term non-stationary asynchronous modes are revealed. Designs that completely shield the field winding from 50 Hz frequency fields for direct motor start are determined. The paper is based on the methodology of a calculation experiment and numerical mathematical modeling.