摘要
无刷双馈电机在风机和水泵调速节能驱动等领域有着广泛的应用前景,而影响其应用的关键在于电机的稳定性。在其任意坐标系下dq模型的基础上,推导出功率绕组同步速坐标系下稳态dq模型;提出一种静态稳定性分析的方法,并建立小信号模型;由李雅普诺夫稳定判据得出电机稳定运行的条件,并且根据不同的控制策略讨论其输入条件。利用小信号模型对开环电压控制和简化的矢量控制下带不同动态特性负载的样机进行稳定性研究,并给出了样机的稳定运行区域。计算和试验结果的对比表明,给出的分析方法和模型是正确的。
Brushless doubly-fed machine （BDFM） will have wide application in adjustable speed saving-energy drive fields such as fan and pump drives, and the stability of the machine is a key factor for the applications of BDFM. Based on dq model in the unified reference frame, at first the steady-state dq model in the stator power winding synchronous speed reference frame was obtained; next the method of the static stability analysis was presented and the small signal model was developed, and then the stability condition was given by means of Lyapunov theorem and the input conditions of different control strategies were studied. The stability of prototype BDFM with the load of different dynamic characteristics under open-loop voltage control and simplified vector control was studied and the stability operation zone of prototype BDFM was given by using small signal model. The comparison of calculated and experimental results shows that the proposed method and model are validated.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第33期117-123,共7页
Proceedings of the CSEE
关键词
无刷双馈电机
小信号模型
dq模型
稳定性分析
运行区域
brushless doubly-fed machine （BDFM）
small signal model
dq model
stability analysis
operation zone
