electrically and drive transient events

This thesis, in general, consists of four main parts. The first part is an introduction and the system of electrical movement is studied. In the second part, it has given a place for electrical motor snd the studying of thr work- characteristics the work – machineries. The importance of this part is the appropriate reaction of electrical motor to the action of the work-machineries in the working duration. The electrical motor must be powerfull as given the largest counter- moment. As a stable condition, the motor and work- machinery's management of characteristic must be appropriate. Generally, unstable condition of electrical motor are studied in the third part. In this part, evnts like unsatable regim, giving way to working, topping, changing of return way and unstable event of regim at time of transmission from a revolving to another one was studied mathematically and physically. In the fourth part, conditions of unstable regim in moment system (motor+working machines) are studied. In this study, equivalent cycle method is used in studying un stable transfer functions and blok diagrama were benafited in this study. In this thesis, the emphasis was on the systematical methods which espacially gave way for physical problems to enter into mathematical form. In the thesis, we tried to take the matters in a short and simple ways. I should thank to my master Prof. Kemal Halicı fort his valuable help and contribution in completing this study of thesis.