PARAMETERS OF GUARANTEED SELF–EXCITATION OF AN INDUCTION GENERATOR FOR AUTONOMOUS ELECTRIC POWER SOURCES

Purpose. Development of the IG model for estimation of influence of variations of parameters of the generator on quality of process of self-excitation at definition of the basic and boundary operating modes and system of initial excitation at invariable parameters of the generator. Result. The article simulates the self-excitation process of an autonomous asynchronous generator by the method of regression equations, which adequately describe the dependence of the self-excitation time and the value of the output voltage. The following statistically significant factors have been determined, such as the excitation capacity, the rotor speed, remanent magnetization and residual voltage on the capacitors and their influence on the qualitative and quantitative characteristics of the excitation process of the induction generator. The conditions for self-excitation of an asynchronous generator with capacitor excitation as part of an autonomous power source are determined. Recommendations are formulated for the design of an autonomous power source based on an asynchronous machine in terms of the implementation of self-excitation conditions and optimal operating modes. A simulation model of an autonomous asynchronous generator and solar battery for the analysis of transient, static and dynamic operating modes has been developed. Practical value. The carried out theoretical studies of the capacitive self–excitation of IM machines have created a good basis for solving issues related to the practical use of autonomous sources based on an asynchronous generator. Figures 8, tables 3, references 20.