The control of the Diesel-synchronous generator electro-energetic system

The Diesel engine — synchronous generator system (DE-SG) is widely used in applications where the power distribution grid is absent. This system can ensure, in certain constructive and control (regulation) conditions, the electric energy at nominal values (U = 400 V, f = 50 Hz). This paper shows that is necessary for the SG to have the excitation in direct current, and so, to control the excitation current. It also shows that is necessary to control the fuel flow to the DE, in order for the mechanical power injected into the system to cover the power needed by the electric consumers. Finally, using results from this paper, it is possible to resolve, in the second part, the highly complex problem of regulator adjustment, especially because of the differential equations which model the system are nonlinear and non homogenous