Comparative investigation and improvement of wind farms based on wind energy conversion and grid connection methods

In this paper two different conversion systems of wind energy into electricity are investigated. In the first system studied the wind turbine is connected to a three phase diode rectifier. At the output of the non-controlled rectifier a DC/DC boost converter is connected. Controlling the switching pattern for the DC/DC converter the maximum power point tracking (MPPT) is achieved. In the second system the wind turbine is connected to a three-level rectifier consisting of IGBTs switches. The three-level rectifier is triggered with the space vector modulation method (SVPWM). The maximum power is achieved through and algorithm which modifies the switching pattern. On the grid side a three level inverter is connected. The controllers applied to both systems are fuzzy controllers. For the study of these two systems Matlab/ Simulink was used in steady state and transient response.