Low cost and high efficiency static converter for small wind systems

This work introduces an innovative low cost topology for a wind conversion system with an efficient output power control in order to meet the battery charge requirements. The project is in accord with the specifications required at IFEC 2009 (the 2009 International Future Energy Challenge, sponsored by IEEE). The proposed topology is based on a high frequency discontinuous conduction mode three-phase semi-controlled rectifier associated with buck converter. The converter is controlled by a system composed of three loops, which limit the current and the voltage to the maximum values allowed by the batteries and the voltage over the DC bus. There is also a MPPT algorithm that intends to maximize the power extracted from the turbine/generator association.