风力机特性的直流电动机模拟及其变速恒频风力发电研究中的应用  

THE IMITATION OF WIND-TURBINE CHARACTERISTIC USING DCMOTOR IN THE INVESTIGATION ON VSCFWIND-POWER GENERATION

作　　者：贺益康[1] 胡家兵[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《太阳能学报》2006年第10期1006-1013,共8页Acta Energiae Solaris Sinica

基　　金：863国家高技术研究发展计划项目(2001AA512023-3)

摘　　要：为了能在不具备风场环境的实验室条件下对双馈异步发电机的交流励磁发电技术进行实验研究,该文提出了采用直流电动机模拟风力机工作特性的实现方案。该方法基于风力机和直流电动机在功率(转矩)特性上的相似性,采用转矩控制方案实现了风力机特性的直流电动机模拟,进而构建了整个变速恒频DFIG风力发电装置的实验系统。首次在实验室环境下实现了最大风能动态追踪、P、Q解耦控制的实验研究,验证了直流电动机模拟风力机特性的可实现性和变速恒频DFIG风力发电系统最大风能追踪控制策略的正确性。The AC excited Variable Speed Constant Frequency （VSCF） power generation using Doubly-Fed Induction Generator （DFIG） has been becoming the mainstream in wind-power generation as its high operation efficiency and control flexibility. Via the decoupled control of DFIG active and reactive power output, the generator can be controlled in the maximum wind-power capturing operation mode to enhance the system efficiency highly. In order to make the investigation of the advanced wind power generation technology possible in the lab without wind farm circumstance, and based on detailed analyzing the similarities and differences of related characteristic between wind turbine and DC motor, a novel design for imitating the wind turbine operation characteristic by accurately controlling a thyristor controlled rectifier-DC motor set. A torque-controlled scheme was finally chosen for the DC motor control to realize wind turbine characteristic imitation, and furthermore, a complete experimental system of VSCF DFIG wind power generation can then be established for laboratory study application. The experimental results testify the feasibility of the imitation approach, meanwhile, the feasibility and correctness of the maximum wind power capturing strategy in VSCF DFIG wind power generation system were verified as well.

关 键 词：变速恒频 双馈异步发电机 最大风能动态追踪 风力机特性 直流电动机模拟 

分 类 号：TM303[电气工程—电机]