摘要
针对孤岛模式下双馈异步发电机(DFIG)实际运行需要,通过改进间接定子磁链定向(ISF0)控制策略,分离提取定子磁链正负序分量并使用比例积分谐振(PIR)控制,实现不平衡负载下DFIG定子输出电压幅值、频率稳定。实验表明该算法能明显降低DFIG定子输出电压不平衡度,从而有效满足DFIG孤岛不平衡条件下运行需求。
Aiming at the operation requirement of doubly-fed induction generator (DFIG) under autonomous operation mode, this paper presents the modified indirect stator flux orientation (ISFO) strategy to implement the stability of sta- tor voltage amplitude and frequency on the unbalanced load, in which both the positive and negative sequences of st- ator flux are extracted and controlled by the proportional integral resonant(PIR) controller.The experimental results indicate an evident decline of the stator voltage unbalanced degree, which strongly validates the proposed strategy.
出处
《电力电子技术》
CSCD
北大核心
2013年第11期7-8,11,共3页
Power Electronics
基金
国家863基金项目(2011AA050204)~~
关键词
双馈异步发电机
孤岛运行
不平衡负载
doubly-fed induction zenerator: autonomous ooeration: unbalanced load