Improving the reliability of the managed of electric drives with a synchronous generator

Elena Loginova
COMPUTER MODELLING & NEW TECHNOLOGIES 2017 21(1) 52-55

Moscow Institute of Technology (MTI), Leninsky Prospect, 38a, Moscow, Russia

The article examines the dynamic properties of the excitation control system of synchronous generator of capacity 2200kW, which comprises a converter - bridge rectifier. It was investigated the influence of the type of bridge rectifier - of thyristor symmetric bridge and of asymmetric bridge - on transient processes of synchronous generator in emergency operation. This problem was solved by numerical methods.
A mathematical model of synchronous generator excitation control system. In order to make the model of the generator excitation system has been used plugin SIMULINK mathematical software MATLAB.
During simulation were calculated currents short circuit of the synchronous generator in the case of using in system excitation a thyristor symmetrical bridge and asymmetrical bridge. Calculations have shown that the use of symmetric thyristor bridge reduces times the short circuit fivefold. This allows us to recommend used a symmetrical bridge in the electric drive system.