Abstract
Self-excited induction generators (SEIG) are mostly exploited in isolated areas to generate electrical energy. Analyzing of a stand-alone SEIG dynamic performance is largely limited application of the SEIG to static load. This paper presents dynamic simulation of small SEIG feeding induction motor (IM) load. Mathematical models of SEIG, IM, and wind turbine are clearly implemented into Matlab/Simulink environment. The study results reveal that a great dip in SEIG voltage occurs when the IM load is suddenly connected to the SEIG since the excitation capacitor cannot provide sufficient reactive power support. By applying an additional paralleled-motor capacitor, the SEIG voltage dip can be alleviated and a faster acceleration of the IM load can be obtained.
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