Optimum control of grid connected interior permanent magnet wind turbine generator

Permanent magnet synchronous generator is widely used in wind turbine applications because of its high efficiency and lower maintenance. Interior permanent magnet machine has the advantage of using both reluctance torque due to saliency and common magnetic torque. In this paper a grid connected IPM generator is studied as a variable speed wind turbine. Maximum power point tracking strategy beside loss minimization of is applied to get maximum power from the wind speed. The controller part of machine side converter and grid side converter is designed and explained in details. Besides a pitch angle control is added to protect the generator from over speeding. Simulation results prove the performance of variable speed operation under and above rated wind speed.