The mathematical model of the synchronous salient pole generator, taking into account the active resistance of the stator winding and permitting to identify a number of features of such generators in the General case, without regard to their power and speed, is considered. For the convenience of the analysis, the relative values of synchronous inductive resistances of the stator winding along the longitudinal and transverse axes, as well as dimensionless functions characterizing the consumed and electromagnetic power, as well as the electromagnetic torque of the synchronous generator, are introduced. Accounting for the active resistance of the stator winding results in the appearance of additional components in the active and electromagnetic capacities of the synchronous generator, so that the electromagnetic power of the generator in question contains six components instead of two. Moreover, in addition to the harmonic components, there are constant components that do not depend on the angular position of the rotor relative to the rotating magnetic field of the stator winding. Increasing the power of the generator is accompanied by a rapid decrease in the amplitude values of these components. The proposed model makes it possible to evaluate the technical and economic indicators of the quality of the generator in general without regard to its capacity. The influence of the ratio between the stator winding synchronous inductive couplings along the transverse and longitudinal axes, as well as the influence of the excitation coefficient on the synchronous generator angular characteristics are considered.

Authors: M. A. Vaganov, I. A. Babskаyа

Direction: Electrical Engineering

Keywords: Relative parameter; coefficient of excitation; functions of current, load angle, active and electromagnet power, overload capacity, angular characteristic, additional components of active and electromagnetic power

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