Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back The automatic frequency asynchronous electric drive with vector control V.N. MESHCHRYAKOV, B.A. KORCHAGINA, O.V. MESHCHERYAKOVA The model energy-saving the frequency asynchronous electric drive with vector management adjusted on maintenance of an optimum corner 45? between a current stator and a magnetisation current is considered. System work is shown by mechanical dynamic characteristics and vector diagrammes of the AC motor. Key words: the asynchronous motor, frequency converter, smooth start-up, mathematical model.