谐波电网下双馈风力发电系统的独立控制技术  

An Independent Control Technique of the Doubly-fed Induction Generators System in Generalized Harmonic Power Grids

作　　者：程晨闻 年珩[1] 吴瑊 程鹏[1] 宋亦鹏[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]东北大学秦皇岛分校控制工程学院,河北省秦皇岛市066004

出　　处：《中国电机工程学报》2016年第15期4099-4107,共9页Proceedings of the CSEE

摘　　要：为了改善谐波电网下双馈感应发电机(doubly fed induction generator,DFIG)的运行性能,研究了一种转子侧变流器(rotor side converter,RSC)和网侧变流器(grid side converter,GSC)的独立控制策略,采用基于重复控制的直接功率控制策略,以同时消除被控对象中的低次和高次谐波分量。传统的PI调节器用于控制DFIG定子侧和网侧有功功率、无功功率的平均值,转子侧额外的重复控制调节器实现了电磁转矩和无功功率平稳,网侧的重复控制调节器实现了直流母线电压和网侧无功功率平稳。网侧的控制无需知道转子侧功率的信息,进而实现了RSC和GSC的独立控制。最后,通过实验验证了所提控制策略的有效性。In order to improve the operation performance of doubly-fed induction generators （DFIG） in generalized harmonic power grids, an independent control of rotor side converter （RSC） and grid side converter （GSC） was proposed. By adopting the repetitive control （RC） based direct power control （DPC） strategy, simultaneous eliminations of both the low and high order harmonic components can be acquired. Traditional PI regulators were used to control the stator active and reactive power, as well as the grid active and reactive power. Additional RC regulators of RSC were employed to acquire smooth electromagnetic torque and stator reactive power while RC regulators of GSC aims at suppressing the dc voltage fluctuations and grid reactive ,power oscillations without the rotor power information, by which the independent control of RSC and GSC is achieved. Finally, the experiment was developed to validate the availability of the proposed control strategy.

关 键 词：谐波电网 双馈感应发电机 重复控制 直接功率控制 独立控制 

分 类 号：TM315[电气工程—电机]