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The LVRT control ability analysis of BDFIG motor side converter

机译:BDFIG电机侧转换器的LVRT控制能力分析

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There is no brush in the brushless doubly fed induction generator(BDFIG). Because of this excellent maintenance feature, it has well prospects in wind power system. The low voltage ride through (LVRT) is the most important grid code of wind power system. The control limit of the generator side converter is the key point to the LVRT control strategy. It has great research value. This paper proposes a method to find out the control limit of BDFIG MSC under voltage dips. First, the control limit calculation is formulated to be an optimization problem with practical constraints. Then, such optimization problem is solved with Pontryagin's minimum principle (PMP) and the control limit can be obtained. After compared with the DFIG system, the results shows that the BDFIG has more excellent LVRT capability.
机译:无刷双馈感应发电机(BDFIG)中没有刷子。由于这种优秀的维护功能,它在风电系统中具有井展前景。低电压乘车(LVRT)是风电系统最重要的网格码。发电机侧转换器的控制极限是LVRT控制策略的关键点。它具有很大的研究价值。本文提出了一种方法来找出BDFIG MSC下电压倾斜的控制极限。首先,将控制限制计算配制成具有实际限制的优化问题。然后,用Pontryagin的最小原理(PMP)来解决这种优化问题,并且可以获得控制限制。与DFIG系统相比,结果表明,BDFIG具有更优异的LVRT能力。

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