谐波电网下基于重复控制的双馈风力发电机直接功率控制技术  

A Direct Power Control Technique of DFIG Based on Repetitive Control in Generalized Harmonic Power Grids

作　　者：年珩[1] 程晨闻 宋亦鹏[1] 程鹏[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《中国电机工程学报》2016年第2期407-416,共10页Proceedings of the CSEE

摘　　要：为提高包含更高次谐波电压的电网环境下双馈感应发电机(doubly-fed induction generator,DFIG)的运行性能,改善其馈入电网的电能质量,该文提出了一种基于重复控制调节器的DFIG直接功率控制(direct power control,DPC)策略,分别实现了DFIG定子电流无畸变、有功和无功功率平稳、电磁转矩平稳3个控制目标。进而分析了所提DPC策略在不同控制目标下的稳定运行性能。最后,构建1 k W DFIG实验系统,对所提控制策略的有效性进行了实验验证。In order to improve the operation performance of doubly-fed induction generators（DFIG） in generalized harmonic power grids which contain high order harmonic components of grid voltages and power quality feeding into the grid by DFIG, this paper proposed a direct power control（DPC） strategy with a repetitive control（RC） regulator to achieve the three selective targets, including sinusoidal stator currents, constant active and reactive power, or constant electromagnetic torque. The stable operation capability of the proposed DPC strategy under different control targets is also analyzed. Finally, the 1 k W DFIG experimental system is 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 

分 类 号：TM315[电气工程—电机]