Dynamic modelling of grid-connected permanent magnet synchronous generator wind turbine: rectifier dynamics and control design

Abstract

Wind energy technology is developing more and more from recent decades in many countries. Therefore, addressing the latest wind turbine research issues, this study develops a dynamic model of a permanent magnet synchronous generator and an active rectifier—as part of a unified dynamic model of a wind turbine generator in MATLAB/Simulink. In addition, a novel technique for the verification of the open-loop and the closed-loop transfer functions in the frequency domain is presented. The technique develops by analysing the frequency responses of the transfer function at various frequencies. Furthermore, the cascaded control loops of the developed model are designed and the stability of the designed controllers is tested in response to step changes in reference values.

Keywords

• permanent magnet generators
• wind turbines
• transfer functions
• cascade control
• closed loop systems
• wind power
• synchronous generators
• dynamic modelling
• grid-connected permanent magnet synchronous generator wind turbine
• rectifier dynamics
• control design
• wind energy technology
• latest wind turbine research issues
• active rectifier—as part
• unified dynamic model
• wind turbine generator
• closed-loop transfer functions
• cascaded control loops
• designed controllers