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STUDY AND REGULATION OF DC BUS VOLTAGES OF WIND-PHOTOVOLTAIC SYSTEM

机译:风电系统直流母线电压的研究与调节

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摘要

In this paper, we study the unbalance problem of the input Direct Current (DC) voltages of the five-level neutral point clamping (NPC) voltage source inverter (VSI) used in hybrid renewable energy system. The hybrid system is composed of doubly fFed induction generator (DFIG) driven by wind turbine, the rotor is connected to three five-level NPC VSI feed by photovoltaic voltage source. We show particularly the problem of the instability of the DC voltages of the inverter and its consequence on the performances of the DFIG. Then, we propose a solution by using fuzzy logic technique in closed loop regulation. We add clamping bridge to stabilize the four DC input voltages of the five-level NPC. The results are full of promise to be used to stabilize the input DC voltages of the five-level NPC VSI in this kind of application.
机译:在本文中,我们研究了混合可再生能源系统中使用的五级中性点钳位(NPC)电压源逆变器(VSI)的输入直流(DC)电压的不平衡问题。混合动力系统由风力发电机驱动的双馈感应发电机(DFIG)组成,转子通过光伏电压源连接到三个五级NPC VSI馈电。我们特别显示了逆变器直流电压不稳定的问题及其对DFIG性能的影响。然后,我们提出了一种在闭环调节中使用模糊逻辑技术的解决方案。我们添加了钳位桥以稳定五电平NPC的四个DC输入电压。在这种应用中,结果充满了有望用于稳定五电平NPC VSI的输入DC电压的希望。

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