Research on Control Strategy of Off-grid Doubly-fed Wind Turbine
In this paper, the mathematical model of the off-grid wind turbine, the rotor side converter and the stator side converter were analyzed. Then, according to the mathematical model, the direct voltage vector control was derived in the rotor side converter and the control targets were the amplitude and frequency of the output voltage on the stator side. The vector control based on the stator voltage vector orientation was derived in the stator-side converter and the control targets were the DC bus voltage by using the voltage square outer loop and the current inner loop. In order to verify the control strategy, a simulation model was built, and the results show that the method can achieve stable output voltage of off-grid doubly-fed wind turbine.
doubly-fed wind turbinerotor side converter control strategystator side converter control strategy
万方数据
维普
