inverter

The work presents the development and investigation in MATLAB of a model of an autonomous self-excited induction generator with a rotor circuit inverter for a wind turbine. The system employs a scalar-controlled inverter with an independent power supply, and the nonlinear magnetization curve of the induction generator is taken into account. Voltage and frequency regulation are separated. The developed model made it possible to study the self-excitation mode for different rotor supply frequencies.

Experimental studies of the main indicators of power quality at the terminals of autonomous low-power generators were carried out. The content of higher voltage harmonics, as well as voltage and frequency deviations from the nominal value were determined. In the course of the research, the technical means of data collection and analysis by National Instruments were used. The main indicators of the power quality of autonomous inverter generators are shown to fully comply with the EN 50160-2022 standard.