双馈感应风力发电机直接功率控制负载并网控制策略
首发时间:2009-12-07
摘要:传统的风力发电并网方式在并网瞬间可能会产生较大的冲击电流,为了改善并网效果,达到柔性并网的要求,本文根据交流励磁变速恒频风力发电的运行特点,将转子励磁直接功率控制技术应用于双馈感应发电机并网控制,提出并网时改进的电网电压定向直接功率负载并网控制策略,改善了风力发电机并网时电流较大的情况,达到柔性并网的要求,实现了无冲击并网。稳态运行时采用直接功率控制实现有功、无功功率的独立控制。在理论分析的基础上,建立了双馈感应发电机负载并网及稳态运行控制模型,仿真结果表明,该研究提供了一种理想的风力发电并网策略。
关键词: 双馈感应风力发电机 负载并网 直接功率控制 电网电压定向
For information in English, please click here
Research on Load Grid-connection Control Strategy for Double-fed Induction Generator (DFIG) Based on Direct Power Control
Abstract:Traditional wind power generation grid-connected methods bring the current impact extremely high. In order to get flexible grid-connection, in this paper direct power control (DPC) technique is used in doubly fed induction generator (DFIG) according to characteristic of AC-excited variable speed constant frequency (VSCF) wind power generation. Improved DPC load grid-connected control strategy is put forward based on grid voltage orientation to improve the grid-connected situation and realize the flexible grid-connection. Direct Power Control is used in the steady state to realize respectively control of active power and reactive power. The modes of load grid-connection and running in ready state are established based on the theoretic analysis. The simulation results validate the grid-connection mode is an ideal approach for DFIG.
Keywords: double-fed induction generator (DFIG) load grid-connection direct power control grid voltage orientation
论文图表:
引用
No.3730750455612601****
同行评议
共计0人参与
勘误表
双馈感应风力发电机直接功率控制负载并网控制策略
评论
全部评论0/1000