双馈风力发电系统机侧直接功率控制  

Study of Direct Power Control for Rotor-side Converter in Double-fed Wind Power Generation System

作　　者：葛凯[1] 阮毅[1] 赵梅花[1] 谈立[1] 

机构地区：[1]上海大学,机电工程与自动化学院,上海200072

出　　处：《电力电子技术》2014年第4期50-52,共3页Power Electronics

摘　　要：为提高双馈风力发电系统动态响应能力,将直接功率控制(DPC)技术应用到双馈风力发电系统机侧变换器及双馈风力发电机(DFIG)控制中。根据DFIG的动态数学模型,推导和分析了DFIG转子侧交换器电压矢量对定子输出有功和无功功率变化的影响,提出了一种开关频率恒定的空间矢量脉宽调制(SVPWM)-DPC策略。该控制策略将SVPWM技术与DPC相结合,实现DFIG有功和无功功率的解耦控制与功率因数任意可调,具有良好的动、静态特性。最后,对所提方案进行仿真分析和实验验证,仿真和实验结果验证了所提方案的可行性和正确性。In order to improve the dynamic response of double-fed wind power generation system, direct power control （DPC） technology is applied into the rotor-side converter of double-fed wind power generation and double-fed induction generator（DFIG） control.According to the dynamic mathematical model of DFIG, the influences of DFIG rotor-side volt- age vector to the stator output active and reactive power variations are analyzed, and a constant switching frequency of space vector pulse width modulation（SVPMM）-DPC strategy is presented.The strategy of DFIG based on SVPWM is gi- ven, DFIG active and reactive power decoupling control, adjustable power factor and the good dynamic and static char- acteristics are achieved.The experimental and simulation results verify the feasibility and correctness of the strategy.

关 键 词：双馈感应发电机 空间矢量脉宽调制 直接功率控制 

分 类 号：TM3[电气工程—电机]