双馈变速恒频风力发电系统的并网控制研究及其仿真实现  

Grid Connection Control and Modeling-simulation of the Doubly-fed Variable-speed Constant-frequency Wind Power System

作　　者：聂珣[1] 年哓红[1] 何亚屏[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410075

出　　处：《计算技术与自动化》2008年第4期35-39,53,共6页Computing Technology and Automation

基　　金：国家自然科学基金项目(60474029;60774045;60634020);中国博士后科学基金(2005038558)

摘　　要：随着风电机组单机容量的不断增大,发电机并网时的电流冲击已不能忽视,必须对并网控制技术进行深入研究。在总结现有风力发电并网技术的基础上,研究双馈变速恒频风力发电机的"柔性并网"问题,即可通过励磁控制调节发电机输出并满足并网条件。研究双馈电机(DFIG)的空载模型、变频器的整流控制模型和并网控制模型,建立整个并网发电系统,并通过完整的仿真验证系统建模与控制的有效性。With the increasing capacity of wind power generation, the current impact on grid connection could not be ignored, thus the grid connection techniques should be investigated in depth. In terms of existing grid- connection techniques of wind power generator, the ＂flexible grid connection＂ problem of doubly- fed VCSF （variable- speed constant- frequency） wind power generator has been researched to make generator output voltage meet grid - connection condition by excitation control. Based on this, we analyzed the no- load model of DFIG （doubly- fed induction generator）, rectifying control model and grid - connection control of inverter, and set up the whole connecting system. At last, the correctness and validity of modeling and control are verified by the fully simulation.

关 键 词：变速恒频 双馈电机 并网控制 励磁控制 建模仿真 

分 类 号：TK52[动力工程及工程热物理—热能工程]