Based on mechanical and electrical decoupling of electric variable pitch control system

In this paper, a mechanical and electrical decoupling control system for the electric variable pitch control of wind turbine was discussed. First, considered the nonlinear mathematical model of the permanent magnet servo motor used electric variable pitch control of wind turbine, and through the identical change for above dynamic mathematical model, the electric variable pitch position servo control system with the electrical and mechanical decoupling was established. Then the experiment in time is beginning, and software is programmed with VC in Windows embedded control and in the servo system closed cycle no-load experiment, it has been carried out analysis on experiment result. So the results indicated that the mechanical and electrical decoupling control system of electric variable pitch respond quickly and has fine dynamic tracking characteristic and accuracy.