Grid-connected inverter for wind power generation system

In wind power generation system the grid-connected inverter is an important section for energy conversion and transmission,of which the performance has a direct influence on the entire wind power generation system. The mathematical model of the grid-connected inverter is deduced firstly. Then,the space vector pulse width modulation(SVPWM) is analyzed. The power factor can be controlled close to unity,leading or lagging,which is realized based on PI-type current controller and grid voltage vector-oriented control. The control strategy is verified by the simulation and experimental results with a good sinusoidal current,a small harmonic component and a fast dynamic response.