POWER METHOD IN RESEARCH PROBLEMS OF OBJECTS WITH NONLINEARITIES

Analysis of devices and systems which contain nonlinearities has been done by power method. It is shown that such approach can be applied to solve parameters identification problems as linear as nonlinear objects and systems. From the standpoint of theoretical generalizations analysis of the devices and systems containing nonlinearity by power method is considered in the paper. The universality of the method in the problems of parameter identification of both linear and nonlinear objects has been shown. The approach is the making of power source and consumer energy models using harmonic analysis of voltage, current and power signals with the expansion in Fourier series on the period of processes frequency of energy transformations or on its part. The general principles of construction of identification equation systems in the form of balance equations for instantaneous power components frequencies of supply, linear and non-linear elements of the consumer equivalent circuit is described. The application perspective of the energy method in the evaluation of the energy conversion quality of consumers has been mentioned.