Abstract
This paper presents a nodal admittance approach steady state analysis and performance evaluations of the three-phase self-excited induction generator (SEIG) driven by variable speed prime mover such as wind turbine and micro gas turbine. The essential features of the present algorithm of the steady state analysis of the three-phase SEIG are that the variable speed prime-mover characteristics included in the approximate equivalent circuit of the three-phase SEIG and then its performances are evaluated on line with speed change of the prime-mover without complex computations. Furthermore, a closed-loop voltage regulation scheme of the three-phase SEIG driven by variable speed prime mover such as wind turbine is designed and discussed herein by using static VAR compensator (SVC). The digital simulation and experimental results prove the effectiveness and validity of the proposed SVC controlled by PI regulator in terms of fast response and high performances of three-phase SEIG driven by variable-speed prime mover.
