ANALYSIS IN THE FREQUENCY DOMAIN OF THE COMPENSATION OF THE ELECTRIC NETWORKS POWER COMPONENTS SYSTEM WORK

An analytical research of the compensation processes in frequency-domain in the power supply system under nonlinear and asymmetric load using cross-vector theory instantaneous power was done. The necessary quantities for compensation analysis process were formed with the usage of the automated method for frequency components of electrical quantities forming based on discrete convolution algorithm. The instantaneous components of active and reactive power, RMS value of variable components as a function of harmonic components of current amplitude and phase asymmetry were received as a result of the calculations. Analysis of the analytical dependences indicates that the level of the variable power component nonlinearly depends of amplitude asymmetric level and instantaneous active and reactive power rms values does not depend on the angle of current phase shift. In the case of angular asymmetry? instantaneous active and reactive power rms values nonlinearly depends on the angle of asymmetry and do not depends on the angle of phase shift current. It was shown that signal amplitude currents balancing took place after amplitude asymmetry compensation, ie the currents amplitude averaged. Received analytical dependence of the compensation currents allows to determine the PAF phases switches load and to make the right choice for the most current inverter overloaded keys. Analytical expressions compensating current confirmed, curves offset current. Power losses and efficiency of the network before and after compensation of the unwanted instantaneous power components were calculated for the numerical analysis of the compensate effect of the one or another power components