Abstract: This study presents the solution to the problem of the Double-Fed Induction Generator (DFIG) stable voltage generating in the changing terms of environment. For this in nonlinear multivariable systems such as mathematical model of DFIG, we used the method of observers synthesis for external, parametric and structural disturbances is presented in an additive form. This allows on the basis of disturbances approximation to carry out an evaluation under conditions of uncertainty, leading to adapt to disturbances with a priori unknown structure. The research presents the structure and methods of synthesis of control systems, allowing to solve indicated problem. As a power plant that uses DFIG, used autonomous wind turbine. The control system uses the original nonlinear mathematical model of the DFIG in rotating "dq" coordinates, taking into account non-linear changes in the external internal and structural parameters. For confirm the effectiveness of the problem solution, algorithms realization and created control system research, mathematical computer model in MATLAB was developed.