摘要
双馈风力发电机网侧变换器通常工作在单位功率因数状态下,未充分发挥出其无功调节潜能。文章分析了双馈风力发电机网侧变换器的无功功率调节极限,针对网侧变换器非线性、时变d-q系统,提出了一种统一模糊控制策略,即利用网侧变换器进行无功补偿,同时抑制因风速变化引起的发电机出口电压波动。在PSCAD/EMTDC环境下,通过无穷大电网末端接入1台2 MW双馈风力发电机进行仿真,验证了该统一控制策略的有效性。
The grid-side converter of doubly-fed induction generator（DFIG） in wind farm usually op- erates at unity power factor and its potential reactive power regulation capacity is not well utilized. The reactive power regulation limit is analyzed in the paper. For the nonlinear, time-varying d-q system of grid-side converter, a unitive fuzzy control strategy is proposed in which grid-side converter compen- sates reactive power and suppresses generator output voltage fluctuation caused by wind speed variation. A simulation model of a 2 MW wind power DFIG connected with the terminal of an infinity grid is built based on PSCAD/EMTDC, simulation results verify the efficiency of the proposed strategy.
出处
《可再生能源》
CAS
北大核心
2013年第3期60-64,68,共6页
Renewable Energy Resources
基金
江苏省研究生培养创新工程(CXZZ12_0228)
关键词
风力发电机
双馈感应发电机
网侧变换器
无功补偿
电压控制
模糊控制
wind power generator
doubly-fed induction generator
grid-side converter
reactive power compensation
voltage control
fuzzy control
