定子磁场定向双馈风力发电机稳定性分析

首先通过功角特性分析了双馈发电机的静态稳定性,并给出了稳定运行的功角范围,然后根据同步旋转d-q坐标系下双馈电机的动态数学模型,推导出在小信号扰动下的线性数学模型,利用李雅普诺夫第一法及第二法分析定子磁场定向双馈发电机的暂态稳定性的充要条件,旨在从电机参数和稳态运行工况点的电机变量的变化对系统暂态稳定性影响的角度来分析双馈发电机的稳定性。

Stablity Analysis of Stator Field Oriented Control for Doubly-Fed Generator

In this paper, static stability of an doubly-fed generator is analyzed firstly base on power angel characteristic, and the range of the angel which influences the static stability of the system is derived. Then the nonlinear transient model of stator field oriented control for doubly-fed generator is obtained, and the transient stability of the system is proposed by using the Lyapunov first and second methods. The purpose of this paper is to explore the effect on the stability of the system when the parameters and the values of the variables of the generators are varied