并网型双馈电机风力发电系统建模与仿真Modeling and Simulation of Gird-Connected DFIG Wind Power Generation System
任永峰;李含善;李建林;许洪华;
摘要(Abstract)：
双馈电机已成为变速恒频风力发电系统的主流电机。文中介绍了交流励磁变速恒频双馈电机运行的基本原理,推导了风力机模型和交流励磁双馈电机动态数学模型。交流励磁变速恒频双馈电机风力发电系统空载运行和发电运行由于涉及并网时刻状态转移导致建模复杂,故提出用S函数描述双馈电机的数学模型,结合MATLAB中Simulink环境建立完备的系统仿真模型。由仿真结果可看出,所提系统实现了最大风能追踪控制,且动态响应快,双馈电机可运行于不同转差频率下亚同步和超同步状态,同时稳态时转子侧和定子侧注入电网谐波基本为零。
关键词(KeyWords)： 交流励磁;双馈感应电机;风力发电;控制;建模
基金项目(Foundation): 内蒙古自治区自然科学基金重大项目(200711020801);; 内蒙古自治区自然科学基金项目(200607010809);; 内蒙古自治区自然科学基金项目(20080404MS090);; 内蒙古自治区高等学校科学研究项目(NJ05050)
作者(Authors): 任永峰;李含善;李建林;许洪华;
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