摘要
针对在风电机组完成设计之前,需要对机组输出功率性能作出预测的问题,介绍了双馈变速恒频风电机组的系统模型,包括风速、风轮、发电机和变频器的数学模型;根据叶轮原动机输入的机械能和机组的发电功率曲线,研究双馈发电机的稳态特性、功率关系;基于SUT-1500风机模型的参数,利用MATLAB软件仿真机组的功率输出特性.研究结果表明,对于双馈变速恒频风电机组,在低于发电机额定转速时,通过调节功率因数,可以实现机组的最大功率输出,提高机组的运行效率和性能,给机组的控制方案设计提供了参考.
Before completing the design of wind turbines, it is necessary to predict the output power performance. The mathematical model for doubly-fed Wind turbine system including wind rotor, generator and transducer was introduced. According to mechanical energy imported by impeller versus generated power curve, the steady-state characteristic and power relation of doubly-fed generator were studied. Based on the parameters of the SUT-1500 wind turbine and using the MATLAB software, the power output characteristics of wind turbines was simulated. The results show that for variable speed constant frequency doubly-fed wind turbines, the maximum power output can be achieved through adjusting the power factor below rated speed, and the operating efficiency and performance of wind turbines get improved, which can provide a reference for designing the control scheme of wind turbines.
出处
《沈阳工业大学学报》
EI
CAS
2008年第3期270-275,共6页
Journal of Shenyang University of Technology
基金
国家"十一五"科技支撑计划资助项目(2006BAA01A03)
