基于异步电机的风力机特性模拟

Imitation of the Characteristic of Wind Turbine Based on Induction Motor

分析了风力机的运行原理,对比了风力机与异步电动机特性的异同,提出了简单有效的转速控制方案,搭建了"工控机+数据采集卡+变频器+异步电机"的风力机模拟平台,应用LabVIEW软件开发了上位机界面。将该风力机模拟系统应用于新型的定子双绕组感应风力发电系统,实现了模拟风力机在不同风速及不同负载下按照风力机的特性运行,满足了定子双绕组感应风力发电系统进行最大风能追踪的控制策略研究。实验结果表明,该方法实现简单、控制精确,可方便用于实验室条件下风力发电技术的研究。

The operation principle of the wind turbine is analyzed,the characteristics of wind turbine and induction motor are contrasted,a simple and effective control scheme is proposed based on speed,a wind turbine emulation platform including industrial computer,date acquisition card,transducer and induction motor is set up,and the supervisor system is designed using LabVIEW.This wind turbine emulation system is used in a new type of dual stator-winding induction wind power system,and achieves to run at different wind speeds and different loads in according with the characteristics of the real wind turbine,which satisfies the need of the research on the maximum wind energy tracking of dual stator-winding induction wind power system.The experiment shows that this control scheme is realized easily and exactly,which can be used in the laboratory conveniently.