摘要
从转子参考坐标系dq模型出发,研究功率绕组和控制绕组双同步MT坐标系下的无刷双馈发电机(BD-FG)数学模型,建立了包括BDFG、风力机及机械传动链的风力发电系统数学模型。根据风力机和BDFG的特性,采用定子功率绕组磁链定向的矢量变换控制技术,给出了一种功率控制策略。该策略通过控制发电机控制绕组的交流励磁,实现BDFG风力发电系统有功、无功功率的解耦控制和最大功率追踪控制(MPPT)。仿真结果验证了所提出建模与控制方案的正确性和有效性。
The mathematical model of brushless doubly-fed generator （BDFG） in both power winding and control winding synchronous reference frames MT was derived from the model in rotor reference frame dq, and the model of BDFG -based wind power system which consists of BDFG, wind turbine and mechanical drive train was established in this paper. Based on the characteristic analysis of wind turbine and BDFG, a power control strategy for BDFG-based wind power system was developed by means of stator power winding flux orientation control technology, which was able to achieve the decoupiing regulation of the active and reactive power and the MPPT control by controlling the control winding AC excitation. The simulation results verify the cmrectness and validity of the modeling and control scheme proposed in the paper.
出处
《微特电机》
北大核心
2009年第9期52-56,共5页
Small & Special Electrical Machines
关键词
风力发电
无刷双馈电机
最大功率追踪
矢量控制
wind power generation
brushless doubly-fed generator（BDFG）
maximum power point tracking（MPPT）
vector control
