A comparison of conventional and modified vector control strategies for controlling transient currents and voltage dips in grid‐connected wind and photovoltaic (PV) hybrid system is the purpose of this paper. The wind system is composed of three‐bladed rotor with a corresponding mechanical gearbox, a doubly fed induction generator, two power converters (rotor side converter [RSC] and grid side converter), a DC‐link capacitor that put with PV generator, and a grid filter. The big difficulty encountered for a wind and PV hybrid system is to withstand the voltage dip to avoid severe unbalanced grid voltage and transient currents that can damage the RSC. Simulation results show that with the new control, the wind and PV hybrid is able to eliminate large unbalanced grid voltages dips. The non‐negligence of the stator flux is taken into account of the modified control. Oscillation of rotor currents and overvoltage in the DC bus are low by the modified control strategy. The modified vector control constitutes a good alternative solution to overcome the problem introduced by voltage dips.

中文翻译：

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常规和改进的矢量控制策略的比较，这些策略用于控制风力发电和光伏混合系统的暂态电流和电压骤降

本文的目的是比较用于控制并网风电和光伏（PV）混合系统中的瞬态电流和电压骤降的传统矢量控制策略和改进的矢量控制策略。风力系统由三叶片转子和相应的机械齿轮箱，双馈感应发电机，两个功率转换器（转子侧转换器[RSC]和电网侧转换器），与PV发电机一起放置的直流链路电容器和网格过滤器。风能和光伏混合系统遇到的最大困难是承受电压骤降，以避免严重的不平衡电网电压和瞬态电流，这会损坏RSC。仿真结果表明，借助新的控制，风力和光伏混合动力能够消除较大的不平衡电网电压骤降。修改后的控制考虑了定子磁通的非疏忽性。通过改进的控制策略，转子电流的振荡和直流母线中的过电压较低。改进的矢量控制构成了一种很好的替代解决方案，可以克服电压骤降带来的问题。