This paper presents a new maximum power point tracking (MPPT) technique control strategy for a variable speed stand-alone wind turbine with a permanent magnet synchronous generator (PMSG). The PMSG is controlled to achieve maximum power extraction from the available wind power. This control technique contains the merits of both perturb and observe (P&O) technique and the tip speed ratio (TSR) technique. The P&O technique is modified to be a variable duty cycle steps and the TSR is used to improve the steady state performance. The PMSG is connected to a DC/DC boost converter through a three-phase uncontrolled rectifier. The system is modelled and simulated by using Matlab/Simulink package under different wind speed.