ABSTRACT

These synchronous machines have found any importance in the industries but not without problems related to the effect of saturation in the synchronous machines there is a need for the establishment of MATLAB model that can simulate the embedded Simulink Model with an approved level of solving the saturation effect on a synchronous machine. This work presented a dynamic analysis of synchronous machines with saturation effect. Relevant literatures were reviewed to ascertain the extent of the work done by other researchers in the field. The mathematically model of a synchronous machine with saturation effect, the algebraic equations were studied and the D-Q transformations presented. Based on themathematical models, computer simulations with MATLAB/SIMULINK modelsof the test machines were carried out and he models used to compare the dynamic behaviors of the conventional and saturation effect of the synchronous machine at different operating conditions and parameters variations. The dynamic analysis of synchronous machine with a saturation effect contents were adopted in the design and the system simulated with MATLAB/SIMULINK using su- system blocks models for the conventional and saturation effect respectively. Thedynamic performances of both models were modeled by simulating the Simulink to get results and the plots were achieved in MatLab. From the outcome of the results, it was observed that the saturation effect of the work has a lower field current overshot of 13pu as compared to 15pu conventional, the speed of the conventional over shot more than the saturation effect model. There was a uniform overshot of the electrical torque, real and reactive powerwith time respectively. It was further noted that in the event of heavy fault in one of the phases, the saturation effect occurred in a synchronous machines. Althoughappeared to be both in positive and negative sizes. It will perform satisfactorily indicating higher degree of efficiency and stability under fault conditions.Finally, an increase in the time lead to corresponding increasesin the steady-state conditions of the field current, speed, electrical torque, real and reactive until the time gets to above 10 seconds. It is also noticed that the oscillations stopped completely after 6 seconds for the conventional and 5.6 seconds for saturation effect accept reactive power generated and field current against time.