Analog computer representation of alternators for parallel operations

THE USE of dynamically faster drives in aircraft electric-power-generating systems precludes the assumption formerly made in computer studies of these systems that the electrical transient is much faster than the mechanical transient. Furthermore, the representation of alternators for parallel operation introduces new conceptual problems not formerly encountered in representing the alternator for isolated operation. In this paper, the basic circuit equations developed by Park are used to describe the alternator. An additional form is also used so that the effect of saturation is approximated. The usual procedure of breaking the system into its simplest units for system studies is followed in this presentation. The representations of the constraints imposed by the interconnection of the units are separated from the units themselves.