笼型异步发电机在小风电系统中的励磁运用

针对小型永磁同步发电机输出电压随风速变化而同趋势变化，无法自我调节等不足．提出了一种全新的集电力电子技术、控制技术及鼠笼异步发电机于一体的动态励磁方法，即经济可靠的笼型异步发电机结合应用SVG（静止无功发生器）技术的方法。结合物理实验与算例，对笼型异步发电机在离网运行时的励磁特点进行了分析，并通过与永磁同步发电机在有效风速工作范围和整体效率等方面的对比．得出了在小型离网风力发电系统中应用笼型异步发电机，相对永磁同步发电机有诸多优点，有着很好的应用前景。

Excitation and Application of Squirrel Cage Induction Generator in Small Wind Power System

As for the incapability of self-regulation when the output voltage of a small-scale permanent magnet synchronous generator changes with same trend as the wind, this paper put forward a completely new dynamic excitation method which integrates power electronics technology, control technology and the squirrel cage induction generator, namely economic and reliable cage induction generator combination SVG (Static Virtual Generator) technology. Considering physical experiment and calculating case, this paper analyzes excitation characteristics of the cage induction generator running off-grid. By comparing the permanent magnet synchronous generators in the effective work of the scope of the wind speed with the overall efficiency, this paper conclude that cage induction generator possesses advantages over relatively permanent magnet synchronous generators when they are applied in the small off-grid wind power generation system, the former has a very good prospect of application.