Exchange Power Fluctuations with Asymmetry in the Excitation Channels of Diesel-Generator Sets of Marine Electric-Power Systems

The problem of static instability of shipboard electric-power systems (SEPSs) is considered. It is shown that this problem is related to the asymmetric operation of the excitation channels of diesel-generator sets operating with parallel switching on the total load. The calculation of the main characteristics of an SEPS in an asymmetric mode of operation is carried out on the basis of geometric ratios of vector diagrams. The calculated dependences showed the presence of a region of static instability of an SEPS with an asymmetry of excitation channels. Dynamic processes in the considered SEPS are considered using a simulation model. The simulation results confirmed the presence of exchange electromagnetic fluctuations in the SEPS with asymmetry in the excitation systems.