双馈风力发电机PWM变流器控制策略优化研究  

Control strategies optimal design of pulse width modulation converters for doubly fed induction wind power generator

作　　者：刘国华 胡东平[2] 黄波 

机构地区：[1]南京南瑞集团公司,江苏南京210003 [2]中国电力科学研究院,北京100192

出　　处：《宁夏电力》2014年第6期33-36,56,共5页Ningxia Electric Power

摘　　要：为了提升脉冲宽度调制(Pulse Width Modulation,PWM)变流器在电网发生不平衡故障时的控制能力,对变流器控制策略进行优化,设计了基于电流平衡和基于功率平衡的功率外环控制策略,并在仿真实验系统中进行了模拟、分析与验证。结果表明:该方法能够更有效地实现对机组的控制,故障期间对直流电压纹波的抑制效果很好,可稳定控制直流电压,有效降低有功功率波动,提升电网稳定水平。For the sake of improving control ability of pulse width modulation（PWM） converters when the power grid breaks down,optimizes control strategy of converter,separately designs power loop control strategies based on current balance and power balance,through modeling simulates control effects. The result shows that the method can effectively control the units with better effect of suppressing DC voltage ripple in period of failure,control DC voltage steadily,reduce active power fluctuation and improve stability level of power grid.

关 键 词：风力发电 双馈发电机 变流器 控制策略 

分 类 号：TM614[电气工程—电力系统及自动化]