Adaptive PID Control Strategy for Grid-connected Based on DRNN Inverter of Wind Turbine

Wind generator direct current control grid-connected system is a coupling two input two output system,and has a property of fast parameter variance while the unit load changes. Conventional PID controller which is tuned at typical operating point can hardly work well at different unit load, so that a two input two output PID controller structure based on Diagonal Recurrent Neural Network(DRNN) is proposed, besides, the learning algorithms of the parameters of DRNN and PID controller are proposed.finally, the validity of the proposed control strategy is revealed via computer simulations, and which is foundation for more study.