To address the impact of uncertainties such as motor parameter perturbations and sudden chan-ges in grid voltage on the control system during the operation of doubly-fed induction generator(DFIG),a con-trol strategy combining extended state observer(ESO)and model predictive direct power control(MPDPC)is proposed.Firstly,the effects that system coupling terms,model errors,and external perturbations present in the traditional MPDPC have on the control system are analyzed,and in order to reduce this effect,dilated ESO was applied for the estimation with relevant parameters.On this basis,a mathematical model of power predic-tion was established by combining model predictive control theory.Through simulation experiments under dif-ferent working conditions and comparison with traditional MPDPC,the results show that the proposed control strategy has strong robustness and anti-interference ability.
关键词
双馈风力发电机/扩张状态观测器/模型预测直接功率控制/鲁棒性
Key words
doubly-fed induction generator(DFIG)/extended state observer(ESO)/model predictive direct power control(MPDPC)/robustness
维普
万方数据