Performance evaluation of self-excited DSIG as a stand-alone distributed energy resources

Multi-phase induction generators which may be operated in grid or self-excited mode, are found to be successful machines for wind energy conversion. Out of these two, self-excited mode is gaining importance due to its ability to convert the wind energy into electrical energy for large variations in operating speed. For this purpose, in this paper modelling and analysis in an isolated self-excited mode of dual-stator induction generator (DSIG) with a new algorithm have been done. We develop the steady-state model of a DSIG, for stand-alone renewable generation dispenses with the segregating of real and imaginary components of the complex impedance of the induction generator. Steady-state performances and characteristics of different configurations are clearly examined and compared. Simulated results as found using proposed “FZERO” algorithm are verified using experimental results on a test machine. Results obtained show that the system has sufficient capability for practical use in stand-alone power generation.