Two-phase converter used for wind turbine PMSG generation system

For the direct drive, grid-connected wind turbine PMSG generation system, extracting as much wind energy as possible and feeding the grid with high quality electricity are 2 main targets. Boosting DC-link voltage to enough level is the key to realize above targets. In this paper, the topologies of 2-phase input uncontrolled rectifier are studied first, a cost-effective topology, which is especially suitable for the wide range input voltage of wind generation system is presented. To further boost DC-link voltage, by replacing some of the diodes with IGBTs and using fully the leakage inductance of specially designed PMSG, a boost-rectifier topology is presented. Both simulation and test results from a developed 10kW 2-phase wind turbine PMSG generation system well verify the presented topologies.