Performance analysis of a three-phase induction generator self-excited with a single capacitance

This paper presents a unified method of analysis for a three-phase inductio n generator self-excited with a single capacitance and supplying a single-p hase load. Symmetrical components analysis is used to establish the input i mpedance of the generator, while the pattern search method of Hooke and Jee ves enables the per-unit frequency and magnetizing reactance of the machine to be determined, a crucial step in computing the generator performance. B est machine performance is obtained using the Steinmetz connection, with th e excitation capacitance connected across the lagging phase. Experiments ca rried out using a 2.2 kW induction machine confirm the accuracy of the theo retical analysis and the solution method.