双馈风机组电压跌落发生装置的设计与研究

文章研究了双馈风电机组电压跌落发生装置的原理，并对不同的电压跌落发生装置的优缺点进行了研究及比较，确立了阻抗形式的VSG方案，为进一步解决电网故障期间由于电网电压严重跌落造成电压无法恢复的问题，并通过仿真验证了电压跌落发生器的有效性和可行性。

Design and Research of Voltage Drop Generating Device in Doubly-fed Wind Generator

This paper briefly introduces the double-fed wind turbine system structure and operating principle, and doubly-fed motor mathematical modeling. Then it focuses on the principle of voltage sag generator and different voltage drop generating device （impedance form, form transformers, power electronics conversion form） whose advantages and disadvantages are compared, the final form of VSG impedance is established program. To further address the grid voltage during grid faults which cause severe voltage drop problem can not be restored, and finally the voltage dip generator＇s effectiveness and feasibility are verified by simulation.