In recent years there has been increasing demand for the development of new "green" energy sources. Wind power generated using a self-excited induction generator has a drawback in that generated voltage varies with wind velocity. The authors first proposed the use of a single-phase magnetic flux controlled type variable reactor, and developed a system using three such reactors to achieve voltage control of an induction generator. The newly developed three-phase magnetic flux controlled type variable reactor was used to control the voltage of the induction generator. The authors have used an external power source (commercial power) for the voltage control source, and this approach would not be appropriate for use in remote locations. In the system described in this paper, however, a self-sufficient design was adopted that draws power required for voltage control from the generated power.