Guedidi F. Synthesis methods development of the synchronous machine equivalent circuit at excitation winding presentation by multiloop circuit.

Object of investigation is transient processes in synchronous machines at quasi-stepped voltage indignation from side of the stator winding. Aim of research is elaboration of method of experimental parameters determination of rotor contours in different structures equivalent circuits, where excitation winding of synchronous machines is represented by multiple circuit. Theoretical researches are based on general theory of transient processes of alternating current machines, methods of mathematical analysis, founded on Laplas transformation properties and Fur'e integral. In dissertation development of theoretical conceptions established a connection between transient processes, equivalent circuits and frequency-response characteristics of synchronous machines at the expense of structural rotor working out in detail was obtained. On this base a new synthesis method of equivalent circuit of different structures was worked out at presentation of exciting winding by multiloop circuit on experiments data of sudden three-phase short circuit. The new approach to equivalent circuits transformation to form most comfortable for transient processes modeling by the use of R.H. Park's differential equations was offered. The dependences of equivalent circuit parameters for ТВВ-160 turbogenerator on initial value of periodic current component of sudden short circuit were received. A method of experimental parameters determination of synchronous machines on experiments data of sudden three-phase short circuit was taken to inculcation on state enterprise - "Heavy electrical mechanical engineering" works. Branch - electromechanics.