Abstract—In order to smooth the wind turbine generated power, this paper proposes a new direct torque control (DTC) scheme for the permanent magnet synchronous generator (PMSG). The control strategy combines the technique of DTC and the variable pitch control algorithm. Considering the variation of wind speed, the PMSG side converters are used to achieve maximum wind energy capture and power smoothing, while the grid-side converter regulates DC-link voltage, injects the generated power into the AC network. The employed control strategy provides an optimal control solution for wind turbine with the PMSG.

 

Index Terms—DTC, PMSG, power control, maximum wind energy capture