Power split transmissions for wind energy systems

To optimize the power produced in a wind turbine, the turbine speed should vary with the wind speed. Currently, in order to match the grid requirements, variable speed wind turbines incorporate expensive power electronics to convert the variable frequency power to a constant frequency. This paper deals with the performance of power split transmissions in wind energy systems. Through such systems, it is possible to bring significant benefits to the turbine and the generator. Indeed, the turbine could operate at maximum efficiency levels and the generator could produce electric power at a desired frequency. The aim of this paper is to identify the power split configurations that require the minimum rated power of the regulator system (mechanical CVT or servo-motor/generator), to reduce costs and the power losses.